author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 40255 | jdk/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5InitCredential.java@0222e4232e7c |
child 50750 | 45511dcfed3f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.security.jgss.krb5; |
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import org.ietf.jgss.*; |
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import sun.security.jgss.GSSCaller; |
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import sun.security.jgss.spi.*; |
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import sun.security.krb5.*; |
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import javax.security.auth.kerberos.KerberosTicket; |
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import javax.security.auth.kerberos.KerberosPrincipal; |
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import java.net.InetAddress; |
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import java.io.IOException; |
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import java.util.Date; |
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import java.security.AccessController; |
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import java.security.AccessControlContext; |
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import java.security.PrivilegedExceptionAction; |
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import java.security.PrivilegedActionException; |
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/** |
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* Implements the krb5 initiator credential element. |
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* |
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* @author Mayank Upadhyay |
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* @author Ram Marti |
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* @since 1.4 |
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*/ |
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public class Krb5InitCredential |
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extends KerberosTicket |
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implements Krb5CredElement { |
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private static final long serialVersionUID = 7723415700837898232L; |
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private Krb5NameElement name; |
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private Credentials krb5Credentials; |
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private Krb5InitCredential(Krb5NameElement name, |
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byte[] asn1Encoding, |
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KerberosPrincipal client, |
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KerberosPrincipal server, |
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byte[] sessionKey, |
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int keyType, |
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boolean[] flags, |
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Date authTime, |
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Date startTime, |
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Date endTime, |
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Date renewTill, |
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InetAddress[] clientAddresses) |
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throws GSSException { |
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super(asn1Encoding, |
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client, |
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server, |
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sessionKey, |
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keyType, |
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flags, |
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authTime, |
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startTime, |
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endTime, |
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renewTill, |
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clientAddresses); |
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this.name = name; |
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try { |
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// Cache this for later use by the sun.security.krb5 package. |
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krb5Credentials = new Credentials(asn1Encoding, |
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client.getName(), |
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server.getName(), |
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sessionKey, |
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keyType, |
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flags, |
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authTime, |
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startTime, |
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endTime, |
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renewTill, |
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clientAddresses); |
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} catch (KrbException e) { |
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throw new GSSException(GSSException.NO_CRED, -1, |
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e.getMessage()); |
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} catch (IOException e) { |
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throw new GSSException(GSSException.NO_CRED, -1, |
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e.getMessage()); |
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} |
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} |
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private Krb5InitCredential(Krb5NameElement name, |
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Credentials delegatedCred, |
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byte[] asn1Encoding, |
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KerberosPrincipal client, |
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KerberosPrincipal server, |
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byte[] sessionKey, |
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int keyType, |
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boolean[] flags, |
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Date authTime, |
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Date startTime, |
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Date endTime, |
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Date renewTill, |
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InetAddress[] clientAddresses) |
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throws GSSException { |
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super(asn1Encoding, |
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client, |
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server, |
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sessionKey, |
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keyType, |
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flags, |
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authTime, |
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startTime, |
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endTime, |
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renewTill, |
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clientAddresses); |
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this.name = name; |
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// A delegated cred does not have all fields set. So do not try to |
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// creat new Credentials out of the delegatedCred. |
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this.krb5Credentials = delegatedCred; |
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} |
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static Krb5InitCredential getInstance(GSSCaller caller, Krb5NameElement name, |
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int initLifetime) |
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throws GSSException { |
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KerberosTicket tgt = getTgt(caller, name, initLifetime); |
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if (tgt == null) |
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throw new GSSException(GSSException.NO_CRED, -1, |
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"Failed to find any Kerberos tgt"); |
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if (name == null) { |
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String fullName = tgt.getClient().getName(); |
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name = Krb5NameElement.getInstance(fullName, |
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Krb5MechFactory.NT_GSS_KRB5_PRINCIPAL); |
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} |
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return new Krb5InitCredential(name, |
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tgt.getEncoded(), |
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tgt.getClient(), |
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tgt.getServer(), |
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tgt.getSessionKey().getEncoded(), |
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tgt.getSessionKeyType(), |
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tgt.getFlags(), |
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tgt.getAuthTime(), |
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tgt.getStartTime(), |
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tgt.getEndTime(), |
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tgt.getRenewTill(), |
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tgt.getClientAddresses()); |
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} |
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static Krb5InitCredential getInstance(Krb5NameElement name, |
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Credentials delegatedCred) |
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throws GSSException { |
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EncryptionKey sessionKey = delegatedCred.getSessionKey(); |
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/* |
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* all of the following data is optional in a KRB-CRED |
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* messages. This check for each field. |
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*/ |
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PrincipalName cPrinc = delegatedCred.getClient(); |
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PrincipalName sPrinc = delegatedCred.getServer(); |
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KerberosPrincipal client = null; |
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KerberosPrincipal server = null; |
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Krb5NameElement credName = null; |
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if (cPrinc != null) { |
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String fullName = cPrinc.getName(); |
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credName = Krb5NameElement.getInstance(fullName, |
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Krb5MechFactory.NT_GSS_KRB5_PRINCIPAL); |
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client = new KerberosPrincipal(fullName); |
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} |
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// XXX Compare name to credName |
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if (sPrinc != null) { |
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server = |
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new KerberosPrincipal(sPrinc.getName(), |
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KerberosPrincipal.KRB_NT_SRV_INST); |
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} |
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return new Krb5InitCredential(credName, |
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delegatedCred, |
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delegatedCred.getEncoded(), |
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client, |
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server, |
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sessionKey.getBytes(), |
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sessionKey.getEType(), |
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delegatedCred.getFlags(), |
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delegatedCred.getAuthTime(), |
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delegatedCred.getStartTime(), |
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delegatedCred.getEndTime(), |
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delegatedCred.getRenewTill(), |
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delegatedCred.getClientAddresses()); |
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} |
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/** |
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* Returns the principal name for this credential. The name |
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* is in mechanism specific format. |
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* |
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* @return GSSNameSpi representing principal name of this credential |
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* @exception GSSException may be thrown |
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*/ |
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public final GSSNameSpi getName() throws GSSException { |
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return name; |
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} |
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/** |
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* Returns the init lifetime remaining. |
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* |
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* @return the init lifetime remaining in seconds |
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* @exception GSSException may be thrown |
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*/ |
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public int getInitLifetime() throws GSSException { |
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int retVal = 0; |
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Date d = getEndTime(); |
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if (d == null) { |
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return 0; |
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} |
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retVal = (int)(d.getTime() - (new Date().getTime())); |
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return retVal/1000; |
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} |
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/** |
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* Returns the accept lifetime remaining. |
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* |
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* @return the accept lifetime remaining in seconds |
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* @exception GSSException may be thrown |
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*/ |
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public int getAcceptLifetime() throws GSSException { |
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return 0; |
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} |
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public boolean isInitiatorCredential() throws GSSException { |
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return true; |
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} |
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public boolean isAcceptorCredential() throws GSSException { |
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return false; |
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} |
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/** |
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* Returns the oid representing the underlying credential |
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* mechanism oid. |
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* |
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* @return the Oid for this credential mechanism |
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* @exception GSSException may be thrown |
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*/ |
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public final Oid getMechanism() { |
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return Krb5MechFactory.GSS_KRB5_MECH_OID; |
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} |
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public final java.security.Provider getProvider() { |
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return Krb5MechFactory.PROVIDER; |
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} |
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/** |
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* Returns a sun.security.krb5.Credentials instance so that it maybe |
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* used in that package for th Kerberos protocol. |
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*/ |
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Credentials getKrb5Credentials() { |
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return krb5Credentials; |
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} |
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/* |
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* XXX Call to this.refresh() should refresh the locally cached copy |
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* of krb5Credentials also. |
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*/ |
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/** |
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* Called to invalidate this credential element. |
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*/ |
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public void dispose() throws GSSException { |
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try { |
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destroy(); |
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} catch (javax.security.auth.DestroyFailedException e) { |
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GSSException gssException = |
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new GSSException(GSSException.FAILURE, -1, |
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"Could not destroy credentials - " + e.getMessage()); |
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gssException.initCause(e); |
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} |
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} |
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// XXX call to this.destroy() should destroy the locally cached copy |
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// of krb5Credentials and then call super.destroy(). |
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diff
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private static KerberosTicket getTgt(GSSCaller caller, Krb5NameElement name, |
2 | 312 |
int initLifetime) |
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throws GSSException { |
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final String clientPrincipal; |
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/* |
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* Find the TGT for the realm that the client is in. If the client |
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* name is not available, then use the default realm. |
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*/ |
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if (name != null) { |
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clientPrincipal = (name.getKrb5PrincipalName()).getName(); |
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} else { |
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clientPrincipal = null; |
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} |
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final AccessControlContext acc = AccessController.getContext(); |
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try { |
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final GSSCaller realCaller = (caller == GSSCaller.CALLER_UNKNOWN) |
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? GSSCaller.CALLER_INITIATE |
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: caller; |
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return AccessController.doPrivileged( |
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new PrivilegedExceptionAction<KerberosTicket>() { |
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public KerberosTicket run() throws Exception { |
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// It's OK to use null as serverPrincipal. TGT is almost |
337 |
// the first ticket for a principal and we use list. |
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2 | 338 |
return Krb5Util.getTicket( |
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realCaller, |
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clientPrincipal, null, acc); |
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}}); |
342 |
} catch (PrivilegedActionException e) { |
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343 |
GSSException ge = |
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new GSSException(GSSException.NO_CRED, -1, |
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"Attempt to obtain new INITIATE credentials failed!" + |
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" (" + e.getMessage() + ")"); |
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ge.initCause(e.getException()); |
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throw ge; |
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} |
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} |
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352 |
@Override |
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353 |
public GSSCredentialSpi impersonate(GSSNameSpi name) throws GSSException { |
|
354 |
try { |
|
355 |
Krb5NameElement kname = (Krb5NameElement)name; |
|
356 |
Credentials newCred = Credentials.acquireS4U2selfCreds( |
|
357 |
kname.getKrb5PrincipalName(), krb5Credentials); |
|
358 |
return new Krb5ProxyCredential(this, kname, newCred.getTicket()); |
|
359 |
} catch (IOException | KrbException ke) { |
|
360 |
GSSException ge = |
|
361 |
new GSSException(GSSException.FAILURE, -1, |
|
362 |
"Attempt to obtain S4U2self credentials failed!"); |
|
363 |
ge.initCause(ke); |
|
364 |
throw ge; |
|
365 |
} |
|
366 |
} |
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2 | 367 |
} |