1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     3  *

     4  * This code is free software; you can redistribute it and/or modify it

     5  * under the terms of the GNU General Public License version 2 only, as

     6  * published by the Free Software Foundation.  Oracle designates this

     7  * particular file as subject to the "Classpath" exception as provided

     8  * by Oracle in the LICENSE file that accompanied this code.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  */

    24 

    25 /*

    26  *

    27  *  (C) Copyright IBM Corp. 1999 All Rights Reserved.

    28  *  Copyright 1997 The Open Group Research Institute.  All rights reserved.

    29  */

    30 

    31 package sun.security.krb5.internal;

    32 

    33 import sun.security.krb5.*;

    34 import sun.security.util.*;

    35 import java.util.Vector;

    36 import java.io.IOException;

    37 import java.io.*;

    38 

    39 /**

    40  * Implements the ASN.1 EncTicketPart type.

    41  *

    42  * <pre>{@code

    43  * EncTicketPart   ::= [APPLICATION 3] SEQUENCE {

    44  *         flags                   [0] TicketFlags,

    45  *         key                     [1] EncryptionKey,

    46  *         crealm                  [2] Realm,

    47  *         cname                   [3] PrincipalName,

    48  *         transited               [4] TransitedEncoding,

    49  *         authtime                [5] KerberosTime,

    50  *         starttime               [6] KerberosTime OPTIONAL,

    51  *         endtime                 [7] KerberosTime,

    52  *         renew-till              [8] KerberosTime OPTIONAL,

    53  *         caddr                   [9] HostAddresses OPTIONAL,

    54  *         authorization-data      [10] AuthorizationData OPTIONAL

    55  * }

    56  * }</pre>

    57  *

    58  * <p>

    59  * This definition reflects the Network Working Group RFC 4120

    60  * specification available at

    61  * <a href="http://www.ietf.org/rfc/rfc4120.txt">

    62  * http://www.ietf.org/rfc/rfc4120.txt</a>.

    63  */

    64 public class EncTicketPart {

    65 

    66     public TicketFlags flags;

    67     public EncryptionKey key;

    68     public PrincipalName cname;

    69     public TransitedEncoding transited;

    70     public KerberosTime authtime;

    71     public KerberosTime starttime; //optional

    72     public KerberosTime endtime;

    73     public KerberosTime renewTill; //optional

    74     public HostAddresses caddr; //optional

    75     public AuthorizationData authorizationData; //optional

    76 

    77     public EncTicketPart(

    78             TicketFlags new_flags,

    79             EncryptionKey new_key,

    80             PrincipalName new_cname,

    81             TransitedEncoding new_transited,

    82             KerberosTime new_authtime,

    83             KerberosTime new_starttime,

    84             KerberosTime new_endtime,

    85             KerberosTime new_renewTill,

    86             HostAddresses new_caddr,

    87             AuthorizationData new_authorizationData) {

    88         flags = new_flags;

    89         key = new_key;

    90         cname = new_cname;

    91         transited = new_transited;

    92         authtime = new_authtime;

    93         starttime = new_starttime;

    94         endtime = new_endtime;

    95         renewTill = new_renewTill;

    96         caddr = new_caddr;

    97         authorizationData = new_authorizationData;

    98     }

    99 

   100     public EncTicketPart(byte[] data)

   101             throws Asn1Exception, KrbException, IOException {

   102         init(new DerValue(data));

   103     }

   104 

   105     public EncTicketPart(DerValue encoding)

   106             throws Asn1Exception, KrbException, IOException {

   107         init(encoding);

   108     }

   109 

   110     /**

   111      * Initializes an EncTicketPart object.

   112      * @param encoding a single DER-encoded value.

   113      * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.

   114      * @exception IOException if an I/O error occurs while reading encoded data.

   115      * @exception RealmException if an error occurs while parsing a Realm object.

   116      */

   117     private static String getHexBytes(byte[] bytes, int len)

   118             throws IOException {

   119 

   120         StringBuilder sb = new StringBuilder();

   121         for (int i = 0; i < len; i++) {

   122 

   123             int b1 = (bytes[i] >> 4) & 0x0f;

   124             int b2 = bytes[i] & 0x0f;

   125 

   126             sb.append(Integer.toHexString(b1));

   127             sb.append(Integer.toHexString(b2));

   128             sb.append(' ');

   129         }

   130         return sb.toString();

   131     }

   132 

   133     private void init(DerValue encoding)

   134             throws Asn1Exception, IOException, RealmException {

   135         DerValue der, subDer;

   136 

   137         renewTill = null;

   138         caddr = null;

   139         authorizationData = null;

   140         if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x03)

   141                 || (encoding.isApplication() != true)

   142                 || (encoding.isConstructed() != true)) {

   143             throw new Asn1Exception(Krb5.ASN1_BAD_ID);

   144         }

   145         der = encoding.getData().getDerValue();

   146         if (der.getTag() != DerValue.tag_Sequence) {

   147             throw new Asn1Exception(Krb5.ASN1_BAD_ID);

   148         }

   149         flags = TicketFlags.parse(der.getData(), (byte) 0x00, false);

   150         key = EncryptionKey.parse(der.getData(), (byte) 0x01, false);

   151         Realm crealm = Realm.parse(der.getData(), (byte) 0x02, false);

   152         cname = PrincipalName.parse(der.getData(), (byte) 0x03, false, crealm);

   153         transited = TransitedEncoding.parse(der.getData(), (byte) 0x04, false);

   154         authtime = KerberosTime.parse(der.getData(), (byte) 0x05, false);

   155         starttime = KerberosTime.parse(der.getData(), (byte) 0x06, true);

   156         endtime = KerberosTime.parse(der.getData(), (byte) 0x07, false);

   157         if (der.getData().available() > 0) {

   158             renewTill = KerberosTime.parse(der.getData(), (byte) 0x08, true);

   159         }

   160         if (der.getData().available() > 0) {

   161             caddr = HostAddresses.parse(der.getData(), (byte) 0x09, true);

   162         }

   163         if (der.getData().available() > 0) {

   164             authorizationData = AuthorizationData.parse(der.getData(), (byte) 0x0A, true);

   165         }

   166         if (der.getData().available() > 0) {

   167             throw new Asn1Exception(Krb5.ASN1_BAD_ID);

   168         }

   169 

   170     }

   171 

   172     /**

   173      * Encodes an EncTicketPart object.

   174      * @return byte array of encoded EncTicketPart object.

   175      * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.

   176      * @exception IOException if an I/O error occurs while reading encoded data.

   177      */

   178     public byte[] asn1Encode() throws Asn1Exception, IOException {

   179         DerOutputStream bytes = new DerOutputStream();

   180         DerOutputStream temp = new DerOutputStream();

   181         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   182                 true, (byte) 0x00), flags.asn1Encode());

   183         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   184                 true, (byte) 0x01), key.asn1Encode());

   185         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   186                 true, (byte) 0x02), cname.getRealm().asn1Encode());

   187         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   188                 true, (byte) 0x03), cname.asn1Encode());

   189         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   190                 true, (byte) 0x04), transited.asn1Encode());

   191         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   192                 true, (byte) 0x05), authtime.asn1Encode());

   193         if (starttime != null) {

   194             bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   195                     true, (byte) 0x06), starttime.asn1Encode());

   196         }

   197         bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   198                 true, (byte) 0x07), endtime.asn1Encode());

   199 

   200         if (renewTill != null) {

   201             bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   202                     true, (byte) 0x08), renewTill.asn1Encode());

   203         }

   204 

   205         if (caddr != null) {

   206             bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   207                     true, (byte) 0x09), caddr.asn1Encode());

   208         }

   209 

   210         if (authorizationData != null) {

   211             bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,

   212                     true, (byte) 0x0A), authorizationData.asn1Encode());

   213         }

   214         temp.write(DerValue.tag_Sequence, bytes);

   215         bytes = new DerOutputStream();

   216         bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION,

   217                 true, (byte) 0x03), temp);

   218         return bytes.toByteArray();

   219     }

   220 }