/* * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * * (C) Copyright IBM Corp. 1999 All Rights Reserved. * Copyright 1997 The Open Group Research Institute. All rights reserved. */ package sun.security.krb5.internal; import java.io.ObjectOutputStream;import sun.security.krb5.PrincipalName;import sun.security.krb5.Checksum;import sun.security.krb5.Asn1Exception;import sun.security.krb5.Realm;import sun.security.krb5.RealmException;import sun.security.util.*;import java.io.IOException;import java.io.ObjectInputStream;import java.math.BigInteger;import java.util.ArrayList;import java.util.Arrays;import java.util.List;import sun.security.krb5.internal.util.KerberosString;/** * Implements the ASN.1 KRBError type. * * <xmp> * KRB-ERROR ::= [APPLICATION 30] SEQUENCE { * pvno [0] INTEGER (5), * msg-type [1] INTEGER (30), * ctime [2] KerberosTime OPTIONAL, * cusec [3] Microseconds OPTIONAL, * stime [4] KerberosTime, * susec [5] Microseconds, * error-code [6] Int32, * crealm [7] Realm OPTIONAL, * cname [8] PrincipalName OPTIONAL, * realm [9] Realm -- service realm --, * sname [10] PrincipalName -- service name --, * e-text [11] KerberosString OPTIONAL, * e-data [12] OCTET STRING OPTIONAL * } * * METHOD-DATA ::= SEQUENCE OF PA-DATA * * TYPED-DATA ::= SEQUENCE SIZE (1..MAX) OF SEQUENCE { * data-type [0] Int32, * data-value [1] OCTET STRING OPTIONAL * } * </xmp> * * <p> * This definition reflects the Network Working Group RFC 4120 * specification available at * <a href="http://www.ietf.org/rfc/rfc4120.txt"> * http://www.ietf.org/rfc/rfc4120.txt</a>. */ public class KRBError implements java.io.Serializable { static final long serialVersionUID = 3643809337475284503L; private int pvno; private int msgType; private KerberosTime cTime; //optional private Integer cuSec; //optional private KerberosTime sTime; private Integer suSec; private int errorCode; private Realm crealm; //optional private PrincipalName cname; //optional private Realm realm; private PrincipalName sname; private String eText; //optional private byte[] eData; //optional private Checksum eCksum; //optional private PAData[] pa; // PA-DATA in eData private int pa_eType; // The 1st etype appeared in salt-related PAData private static boolean DEBUG = Krb5.DEBUG; private void readObject(ObjectInputStream is) throws IOException, ClassNotFoundException { try { init(new DerValue((byte[])is.readObject())); parseEData(eData); } catch (Exception e) { throw new IOException(e); } } private void writeObject(ObjectOutputStream os) throws IOException { try { os.writeObject(asn1Encode()); } catch (Exception e) { throw new IOException(e); } } public KRBError( APOptions new_apOptions, KerberosTime new_cTime, Integer new_cuSec, KerberosTime new_sTime, Integer new_suSec, int new_errorCode, Realm new_crealm, PrincipalName new_cname, Realm new_realm, PrincipalName new_sname, String new_eText, byte[] new_eData ) throws IOException, Asn1Exception { pvno = Krb5.PVNO; msgType = Krb5.KRB_ERROR; cTime = new_cTime; cuSec = new_cuSec; sTime = new_sTime; suSec = new_suSec; errorCode = new_errorCode; crealm = new_crealm; cname = new_cname; realm = new_realm; sname = new_sname; eText = new_eText; eData = new_eData; parseEData(eData); } public KRBError( APOptions new_apOptions, KerberosTime new_cTime, Integer new_cuSec, KerberosTime new_sTime, Integer new_suSec, int new_errorCode, Realm new_crealm, PrincipalName new_cname, Realm new_realm, PrincipalName new_sname, String new_eText, byte[] new_eData, Checksum new_eCksum ) throws IOException, Asn1Exception { pvno = Krb5.PVNO; msgType = Krb5.KRB_ERROR; cTime = new_cTime; cuSec = new_cuSec; sTime = new_sTime; suSec = new_suSec; errorCode = new_errorCode; crealm = new_crealm; cname = new_cname; realm = new_realm; sname = new_sname; eText = new_eText; eData = new_eData; eCksum = new_eCksum; parseEData(eData); } public KRBError(byte[] data) throws Asn1Exception, RealmException, KrbApErrException, IOException { init(new DerValue(data)); parseEData(eData); } public KRBError(DerValue encoding) throws Asn1Exception, RealmException, KrbApErrException, IOException { init(encoding); showDebug(); parseEData(eData); } /* * Attention: * * According to RFC 4120, e-data field in a KRB-ERROR message is * a METHOD-DATA when errorCode is KDC_ERR_PREAUTH_REQUIRED, * and application-specific otherwise (The RFC suggests using * TYPED-DATA). * * Hence, the ideal procedure to parse e-data should look like: * * if (errorCode is KDC_ERR_PREAUTH_REQUIRED) { * parse as METHOD-DATA * } else { * try parsing as TYPED-DATA * } * * Unfortunately, we know that some implementations also use the * METHOD-DATA format for errorcode KDC_ERR_PREAUTH_FAILED, and * do not use the TYPED-DATA for other errorcodes (say, * KDC_ERR_CLIENT_REVOKED). */ // parse the edata field private void parseEData(byte[] data) throws IOException { if (data == null) { return; } // We need to parse eData as METHOD-DATA for both errorcodes. if (errorCode == Krb5.KDC_ERR_PREAUTH_REQUIRED || errorCode == Krb5.KDC_ERR_PREAUTH_FAILED) { try { // RFC 4120 does not guarantee that eData is METHOD-DATA when // errorCode is KDC_ERR_PREAUTH_FAILED. Therefore, the parse // may fail. parsePAData(data); } catch (Exception e) { if (DEBUG) { System.out.println("Unable to parse eData field of KRB-ERROR:\n" + new sun.misc.HexDumpEncoder().encodeBuffer(data)); } IOException ioe = new IOException( "Unable to parse eData field of KRB-ERROR"); ioe.initCause(e); throw ioe; } } else { if (DEBUG) { System.out.println("Unknown eData field of KRB-ERROR:\n" + new sun.misc.HexDumpEncoder().encodeBuffer(data)); } } } /** * Try parsing the data as a sequence of PA-DATA. * @param data the data block */ private void parsePAData(byte[] data) throws IOException, Asn1Exception { DerValue derPA = new DerValue(data); List<PAData> paList = new ArrayList<>(); while (derPA.data.available() > 0) { // read the PA-DATA DerValue tmp = derPA.data.getDerValue(); PAData pa_data = new PAData(tmp); paList.add(pa_data); int pa_type = pa_data.getType(); byte[] pa_value = pa_data.getValue(); if (DEBUG) { System.out.println(">>>Pre-Authentication Data:"); System.out.println("\t PA-DATA type = " + pa_type); } switch(pa_type) { case Krb5.PA_ENC_TIMESTAMP: if (DEBUG) { System.out.println("\t PA-ENC-TIMESTAMP"); } break; case Krb5.PA_ETYPE_INFO: if (pa_value != null) { DerValue der = new DerValue(pa_value); while (der.data.available() > 0) { DerValue value = der.data.getDerValue(); ETypeInfo info = new ETypeInfo(value); if (pa_eType == 0) pa_eType = info.getEType(); if (DEBUG) { System.out.println("\t PA-ETYPE-INFO etype = " + info.getEType()); System.out.println("\t PA-ETYPE-INFO salt = " + info.getSalt()); } } } break; case Krb5.PA_ETYPE_INFO2: if (pa_value != null) { DerValue der = new DerValue(pa_value); while (der.data.available() > 0) { DerValue value = der.data.getDerValue(); ETypeInfo2 info2 = new ETypeInfo2(value); if (pa_eType == 0) pa_eType = info2.getEType(); if (DEBUG) { System.out.println("\t PA-ETYPE-INFO2 etype = " + info2.getEType()); System.out.println("\t PA-ETYPE-INFO2 salt = " + info2.getSalt()); } } } break; default: // Unknown Pre-auth type break; } } pa = paList.toArray(new PAData[paList.size()]); } public final KerberosTime getServerTime() { return sTime; } public final KerberosTime getClientTime() { return cTime; } public final Integer getServerMicroSeconds() { return suSec; } public final Integer getClientMicroSeconds() { return cuSec; } public final int getErrorCode() { return errorCode; } // access pre-auth info public final PAData[] getPA() { return pa; } public final int getEType() { return pa_eType; } public final String getErrorString() { return eText; } /** * Initializes a KRBError object. * @param encoding a DER-encoded data. * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. * @exception IOException if an I/O error occurs while reading encoded data. * @exception KrbApErrException if the value read from the DER-encoded data * stream does not match the pre-defined value. * @exception RealmException if an error occurs while parsing a Realm object. */ private void init(DerValue encoding) throws Asn1Exception, RealmException, KrbApErrException, IOException { DerValue der, subDer; if (((encoding.getTag() & (byte)0x1F) != (byte)0x1E) || (encoding.isApplication() != true) || (encoding.isConstructed() != true)) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } der = encoding.getData().getDerValue(); if (der.getTag() != DerValue.tag_Sequence) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x00) { pvno = subDer.getData().getBigInteger().intValue(); if (pvno != Krb5.PVNO) throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); } else { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x01) { msgType = subDer.getData().getBigInteger().intValue(); if (msgType != Krb5.KRB_ERROR) { throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); } } else { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } cTime = KerberosTime.parse(der.getData(), (byte)0x02, true); if ((der.getData().peekByte() & 0x1F) == 0x03) { subDer = der.getData().getDerValue(); cuSec = new Integer(subDer.getData().getBigInteger().intValue()); } else cuSec = null; sTime = KerberosTime.parse(der.getData(), (byte)0x04, false); subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x05) { suSec = new Integer (subDer.getData().getBigInteger().intValue()); } else throw new Asn1Exception(Krb5.ASN1_BAD_ID); subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x06) { errorCode = subDer.getData().getBigInteger().intValue(); } else throw new Asn1Exception(Krb5.ASN1_BAD_ID); crealm = Realm.parse(der.getData(), (byte)0x07, true); cname = PrincipalName.parse(der.getData(), (byte)0x08, true); realm = Realm.parse(der.getData(), (byte)0x09, false); sname = PrincipalName.parse(der.getData(), (byte)0x0A, false); eText = null; eData = null; eCksum = null; if (der.getData().available() >0) { if ((der.getData().peekByte() & 0x1F) == 0x0B) { subDer = der.getData().getDerValue(); eText = new KerberosString(subDer.getData().getDerValue()) .toString(); } } if (der.getData().available() >0) { if ((der.getData().peekByte() & 0x1F) == 0x0C) { subDer = der.getData().getDerValue(); eData = subDer.getData().getOctetString(); } } if (der.getData().available() >0) { eCksum = Checksum.parse(der.getData(), (byte)0x0D, true); } if (der.getData().available() >0) throw new Asn1Exception(Krb5.ASN1_BAD_ID); } /** * For debug use only */ private void showDebug() { if (DEBUG) { System.out.println(">>>KRBError:"); if (cTime != null) System.out.println("\t cTime is " + cTime.toDate().toString() + " " + cTime.toDate().getTime()); if (cuSec != null) { System.out.println("\t cuSec is " + cuSec.intValue()); } System.out.println("\t sTime is " + sTime.toDate().toString () + " " + sTime.toDate().getTime()); System.out.println("\t suSec is " + suSec); System.out.println("\t error code is " + errorCode); System.out.println("\t error Message is " + Krb5.getErrorMessage(errorCode)); if (crealm != null) { System.out.println("\t crealm is " + crealm.toString()); } if (cname != null) { System.out.println("\t cname is " + cname.toString()); } if (realm != null) { System.out.println("\t realm is " + realm.toString()); } if (sname != null) { System.out.println("\t sname is " + sname.toString()); } if (eData != null) { System.out.println("\t eData provided."); } if (eCksum != null) { System.out.println("\t checksum provided."); } System.out.println("\t msgType is " + msgType); } } /** * Encodes an KRBError object. * @return the byte array of encoded KRBError object. * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. * @exception IOException if an I/O error occurs while reading encoded data. */ public byte[] asn1Encode() throws Asn1Exception, IOException { DerOutputStream temp = new DerOutputStream(); DerOutputStream bytes = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(pvno)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(msgType)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); if (cTime != null) { bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), cTime.asn1Encode()); } if (cuSec != null) { temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(cuSec.intValue())); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), temp); } bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x04), sTime.asn1Encode());Lines 1–500 of 587. 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/* * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * * (C) Copyright IBM Corp. 1999 All Rights Reserved. * Copyright 1997 The Open Group Research Institute. All rights reserved. */ package sun.security.krb5.internal; import java.io.ObjectOutputStream; import sun.security.krb5.PrincipalName; import sun.security.krb5.Checksum; import sun.security.krb5.Asn1Exception; import sun.security.krb5.Realm; import sun.security.krb5.RealmException; import sun.security.util.*; import java.io.IOException; import java.io.ObjectInputStream; import java.math.BigInteger; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import sun.security.krb5.internal.util.KerberosString; /** * Implements the ASN.1 KRBError type. * * <xmp> * KRB-ERROR ::= [APPLICATION 30] SEQUENCE { * pvno [0] INTEGER (5), * msg-type [1] INTEGER (30), * ctime [2] KerberosTime OPTIONAL, * cusec [3] Microseconds OPTIONAL, * stime [4] KerberosTime, * susec [5] Microseconds, * error-code [6] Int32, * crealm [7] Realm OPTIONAL, * cname [8] PrincipalName OPTIONAL, * realm [9] Realm -- service realm --, * sname [10] PrincipalName -- service name --, * e-text [11] KerberosString OPTIONAL, * e-data [12] OCTET STRING OPTIONAL * } * * METHOD-DATA ::= SEQUENCE OF PA-DATA * * TYPED-DATA ::= SEQUENCE SIZE (1..MAX) OF SEQUENCE { * data-type [0] Int32, * data-value [1] OCTET STRING OPTIONAL * } * </xmp> * * <p> * This definition reflects the Network Working Group RFC 4120 * specification available at * <a href="http://www.ietf.org/rfc/rfc4120.txt"> * http://www.ietf.org/rfc/rfc4120.txt</a>. */ public class KRBError implements java.io.Serializable { static final long serialVersionUID = 3643809337475284503L; private int pvno; private int msgType; private KerberosTime cTime; //optional private Integer cuSec; //optional private KerberosTime sTime; private Integer suSec; private int errorCode; private Realm crealm; //optional private PrincipalName cname; //optional private Realm realm; private PrincipalName sname; private String eText; //optional private byte[] eData; //optional private Checksum eCksum; //optional private PAData[] pa; // PA-DATA in eData private int pa_eType; // The 1st etype appeared in salt-related PAData private static boolean DEBUG = Krb5.DEBUG; private void readObject(ObjectInputStream is) throws IOException, ClassNotFoundException { try { init(new DerValue((byte[])is.readObject())); parseEData(eData); } catch (Exception e) { throw new IOException(e); } } private void writeObject(ObjectOutputStream os) throws IOException { try { os.writeObject(asn1Encode()); } catch (Exception e) { throw new IOException(e); } } public KRBError( APOptions new_apOptions, KerberosTime new_cTime, Integer new_cuSec, KerberosTime new_sTime, Integer new_suSec, int new_errorCode, Realm new_crealm, PrincipalName new_cname, Realm new_realm, PrincipalName new_sname, String new_eText, byte[] new_eData ) throws IOException, Asn1Exception { pvno = Krb5.PVNO; msgType = Krb5.KRB_ERROR; cTime = new_cTime; cuSec = new_cuSec; sTime = new_sTime; suSec = new_suSec; errorCode = new_errorCode; crealm = new_crealm; cname = new_cname; realm = new_realm; sname = new_sname; eText = new_eText; eData = new_eData; parseEData(eData); } public KRBError( APOptions new_apOptions, KerberosTime new_cTime, Integer new_cuSec, KerberosTime new_sTime, Integer new_suSec, int new_errorCode, Realm new_crealm, PrincipalName new_cname, Realm new_realm, PrincipalName new_sname, String new_eText, byte[] new_eData, Checksum new_eCksum ) throws IOException, Asn1Exception { pvno = Krb5.PVNO; msgType = Krb5.KRB_ERROR; cTime = new_cTime; cuSec = new_cuSec; sTime = new_sTime; suSec = new_suSec; errorCode = new_errorCode; crealm = new_crealm; cname = new_cname; realm = new_realm; sname = new_sname; eText = new_eText; eData = new_eData; eCksum = new_eCksum; parseEData(eData); } public KRBError(byte[] data) throws Asn1Exception, RealmException, KrbApErrException, IOException { init(new DerValue(data)); parseEData(eData); } public KRBError(DerValue encoding) throws Asn1Exception, RealmException, KrbApErrException, IOException { init(encoding); showDebug(); parseEData(eData); } /* * Attention: * * According to RFC 4120, e-data field in a KRB-ERROR message is * a METHOD-DATA when errorCode is KDC_ERR_PREAUTH_REQUIRED, * and application-specific otherwise (The RFC suggests using * TYPED-DATA). * * Hence, the ideal procedure to parse e-data should look like: * * if (errorCode is KDC_ERR_PREAUTH_REQUIRED) { * parse as METHOD-DATA * } else { * try parsing as TYPED-DATA * } * * Unfortunately, we know that some implementations also use the * METHOD-DATA format for errorcode KDC_ERR_PREAUTH_FAILED, and * do not use the TYPED-DATA for other errorcodes (say, * KDC_ERR_CLIENT_REVOKED). */ // parse the edata field private void parseEData(byte[] data) throws IOException { if (data == null) { return; } // We need to parse eData as METHOD-DATA for both errorcodes. if (errorCode == Krb5.KDC_ERR_PREAUTH_REQUIRED || errorCode == Krb5.KDC_ERR_PREAUTH_FAILED) { try { // RFC 4120 does not guarantee that eData is METHOD-DATA when // errorCode is KDC_ERR_PREAUTH_FAILED. Therefore, the parse // may fail. parsePAData(data); } catch (Exception e) { if (DEBUG) { System.out.println("Unable to parse eData field of KRB-ERROR:\n" + new sun.misc.HexDumpEncoder().encodeBuffer(data)); } IOException ioe = new IOException( "Unable to parse eData field of KRB-ERROR"); ioe.initCause(e); throw ioe; } } else { if (DEBUG) { System.out.println("Unknown eData field of KRB-ERROR:\n" + new sun.misc.HexDumpEncoder().encodeBuffer(data)); } } } /** * Try parsing the data as a sequence of PA-DATA. * @param data the data block */ private void parsePAData(byte[] data) throws IOException, Asn1Exception { DerValue derPA = new DerValue(data); List<PAData> paList = new ArrayList<>(); while (derPA.data.available() > 0) { // read the PA-DATA DerValue tmp = derPA.data.getDerValue(); PAData pa_data = new PAData(tmp); paList.add(pa_data); int pa_type = pa_data.getType(); byte[] pa_value = pa_data.getValue(); if (DEBUG) { System.out.println(">>>Pre-Authentication Data:"); System.out.println("\t PA-DATA type = " + pa_type); } switch(pa_type) { case Krb5.PA_ENC_TIMESTAMP: if (DEBUG) { System.out.println("\t PA-ENC-TIMESTAMP"); } break; case Krb5.PA_ETYPE_INFO: if (pa_value != null) { DerValue der = new DerValue(pa_value); while (der.data.available() > 0) { DerValue value = der.data.getDerValue(); ETypeInfo info = new ETypeInfo(value); if (pa_eType == 0) pa_eType = info.getEType(); if (DEBUG) { System.out.println("\t PA-ETYPE-INFO etype = " + info.getEType()); System.out.println("\t PA-ETYPE-INFO salt = " + info.getSalt()); } } } break; case Krb5.PA_ETYPE_INFO2: if (pa_value != null) { DerValue der = new DerValue(pa_value); while (der.data.available() > 0) { DerValue value = der.data.getDerValue(); ETypeInfo2 info2 = new ETypeInfo2(value); if (pa_eType == 0) pa_eType = info2.getEType(); if (DEBUG) { System.out.println("\t PA-ETYPE-INFO2 etype = " + info2.getEType()); System.out.println("\t PA-ETYPE-INFO2 salt = " + info2.getSalt()); } } } break; default: // Unknown Pre-auth type break; } } pa = paList.toArray(new PAData[paList.size()]); } public final KerberosTime getServerTime() { return sTime; } public final KerberosTime getClientTime() { return cTime; } public final Integer getServerMicroSeconds() { return suSec; } public final Integer getClientMicroSeconds() { return cuSec; } public final int getErrorCode() { return errorCode; } // access pre-auth info public final PAData[] getPA() { return pa; } public final int getEType() { return pa_eType; } public final String getErrorString() { return eText; } /** * Initializes a KRBError object. * @param encoding a DER-encoded data. * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. * @exception IOException if an I/O error occurs while reading encoded data. * @exception KrbApErrException if the value read from the DER-encoded data * stream does not match the pre-defined value. * @exception RealmException if an error occurs while parsing a Realm object. */ private void init(DerValue encoding) throws Asn1Exception, RealmException, KrbApErrException, IOException { DerValue der, subDer; if (((encoding.getTag() & (byte)0x1F) != (byte)0x1E) || (encoding.isApplication() != true) || (encoding.isConstructed() != true)) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } der = encoding.getData().getDerValue(); if (der.getTag() != DerValue.tag_Sequence) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x00) { pvno = subDer.getData().getBigInteger().intValue(); if (pvno != Krb5.PVNO) throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); } else { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x01) { msgType = subDer.getData().getBigInteger().intValue(); if (msgType != Krb5.KRB_ERROR) { throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); } } else { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } cTime = KerberosTime.parse(der.getData(), (byte)0x02, true); if ((der.getData().peekByte() & 0x1F) == 0x03) { subDer = der.getData().getDerValue(); cuSec = new Integer(subDer.getData().getBigInteger().intValue()); } else cuSec = null; sTime = KerberosTime.parse(der.getData(), (byte)0x04, false); subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x05) { suSec = new Integer (subDer.getData().getBigInteger().intValue()); } else throw new Asn1Exception(Krb5.ASN1_BAD_ID); subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte)0x1F) == (byte)0x06) { errorCode = subDer.getData().getBigInteger().intValue(); } else throw new Asn1Exception(Krb5.ASN1_BAD_ID); crealm = Realm.parse(der.getData(), (byte)0x07, true); cname = PrincipalName.parse(der.getData(), (byte)0x08, true); realm = Realm.parse(der.getData(), (byte)0x09, false); sname = PrincipalName.parse(der.getData(), (byte)0x0A, false); eText = null; eData = null; eCksum = null; if (der.getData().available() >0) { if ((der.getData().peekByte() & 0x1F) == 0x0B) { subDer = der.getData().getDerValue(); eText = new KerberosString(subDer.getData().getDerValue()) .toString(); } } if (der.getData().available() >0) { if ((der.getData().peekByte() & 0x1F) == 0x0C) { subDer = der.getData().getDerValue(); eData = subDer.getData().getOctetString(); } } if (der.getData().available() >0) { eCksum = Checksum.parse(der.getData(), (byte)0x0D, true); } if (der.getData().available() >0) throw new Asn1Exception(Krb5.ASN1_BAD_ID); } /** * For debug use only */ private void showDebug() { if (DEBUG) { System.out.println(">>>KRBError:"); if (cTime != null) System.out.println("\t cTime is " + cTime.toDate().toString() + " " + cTime.toDate().getTime()); if (cuSec != null) { System.out.println("\t cuSec is " + cuSec.intValue()); } System.out.println("\t sTime is " + sTime.toDate().toString () + " " + sTime.toDate().getTime()); System.out.println("\t suSec is " + suSec); System.out.println("\t error code is " + errorCode); System.out.println("\t error Message is " + Krb5.getErrorMessage(errorCode)); if (crealm != null) { System.out.println("\t crealm is " + crealm.toString()); } if (cname != null) { System.out.println("\t cname is " + cname.toString()); } if (realm != null) { System.out.println("\t realm is " + realm.toString()); } if (sname != null) { System.out.println("\t sname is " + sname.toString()); } if (eData != null) { System.out.println("\t eData provided."); } if (eCksum != null) { System.out.println("\t checksum provided."); } System.out.println("\t msgType is " + msgType); } } /** * Encodes an KRBError object. * @return the byte array of encoded KRBError object. * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. * @exception IOException if an I/O error occurs while reading encoded data. */ public byte[] asn1Encode() throws Asn1Exception, IOException { DerOutputStream temp = new DerOutputStream(); DerOutputStream bytes = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(pvno)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(msgType)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); if (cTime != null) { bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), cTime.asn1Encode()); } if (cuSec != null) { temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(cuSec.intValue())); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), temp); } bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x04), sTime.asn1Encode());