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The Open Source version of the IBM Toolbox for Java
There is a newer version: 20.0.8
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename:  DDMSECCHKRequestDataStream.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 1997-2003 International Business Machines Corporation and
// others.  All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////

package com.ibm.as400.access;

import java.io.IOException;
import java.io.OutputStream;

class DDMSECCHKRequestDataStream extends DDMDataStream
{
    private static final String copyright = "Copyright (C) 1997-2003 International Business Machines Corporation and others.";

    DDMSECCHKRequestDataStream(byte[] userIDbytes, byte[] authenticationBytes, byte[] iasp, int byteType)
    {
        super(new byte[authenticationBytes.length + (iasp == null ? 0 : 22) + (byteType == AS400.AUTHENTICATION_SCHEME_PASSWORD ? 34 : 26)]);

        // Initialize the header:  Don't continue on error, not chained, GDS id = D0, type = RQSDSS, no same request correlation.
        setGDSId((byte)0xD0);
        if (byteType != AS400.AUTHENTICATION_SCHEME_PASSWORD)
        {
            setLength(16);
            setIsChained(true);
            // setContinueOnError(false);
            setHasSameRequestCorrelation(true);
            setType(1);
            set16bit(10, 6); // Set total length remaining after header.
            set16bit(DDMTerm.SECCHK, 8);  // Set code point for SECCHK.
            set16bit(6, 10);  // Set LL for SECMEC term.
            set16bit(DDMTerm.SECMEC, 12); // Set code point for SECMEC.
            // Set value of SECMEC parm.
            if (byteType == AS400.AUTHENTICATION_SCHEME_GSS_TOKEN)
            {
                set16bit(11, 14);
            }
            else
            {
                set16bit(16, 14);
            }
            set16bit(authenticationBytes.length + 10, 16);  // Set LL for SECCHK term.
            set16bit(0xD003, 18);

            set16bit(authenticationBytes.length + 4, 22);  // Set LL for SECCHK term.
            set16bit(0x11DC, 24);  // Set LL for SECMEC term.
            System.arraycopy(authenticationBytes, 0, data_, 26, authenticationBytes.length);
        }
        else
        {
            boolean useRDB = (iasp != null);
            // setIsChained(false);
            // setContinueOnError(false);
            // setHasSameRequestCorrelation(false);
            setType(1);
            set16bit(authenticationBytes.length + (useRDB ? 50 : 28), 6);  // Set LL for SECCHK term.
            set16bit(DDMTerm.SECCHK, 8);  // Set code point for SECCHK.
            set16bit(6, 10);  // Set LL for SECMEC term.
            set16bit(DDMTerm.SECMEC, 12); // Set code point for SECMEC.
            if (authenticationBytes.length == 20)
            {
                set16bit(8, 14); // Set value for SECMEC term.
            }
            else
            {
                set16bit(6, 14);  // Set value for SECMEC term.
            }
            set16bit(14, 16);  // Set LL for USRID term.
            set16bit(DDMTerm.USRID, 18);  // Set code point for USRID.
            // Set the user ID.
            System.arraycopy(userIDbytes, 0, data_, 20, 10);

            set16bit(authenticationBytes.length + 4, 30);  // Set LL for PASSWORD term.
            set16bit(DDMTerm.PASSWORD, 32);  // Set code point for PASSWORD.
            // Set the password.
            System.arraycopy(authenticationBytes, 0, data_, 34, authenticationBytes.length);

            if (useRDB)
            {
                if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "Sending SECCHK request with RDB / IASP name.");
                int offset = 34 + authenticationBytes.length;
                set16bit(22, offset);
                set16bit(DDMTerm.RDBNAM, offset + 2);
                System.arraycopy(iasp, 0, data_, offset + 4, iasp.length);
            }
        }
    }

    void write(OutputStream out) throws IOException
    {
        if (Trace.traceOn_) Trace.log(Trace.DIAGNOSTIC, "Sending DDM SECCHK request...");
        super.write(out);
    }
}