/*

 * 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.ccache;

import java.io.IOException;

import java.io.OutputStream;

import sun.security.krb5.internal.util.KrbDataOutputStream;

import sun.security.krb5.*;

import sun.security.krb5.internal.*;

/**

 * This class implements a buffered output stream. It provides functions to write FCC-format data to a disk file.

 *

 * @author Yanni Zhang

 *

 */

public class CCacheOutputStream extends KrbDataOutputStream implements FileCCacheConstants {

    public CCacheOutputStream(OutputStream os) {

        super(os);

    }

    public void writeHeader(PrincipalName p, int version) throws IOException {

        write((version & 0xff00) >> 8);

        write(version & 0x00ff);

        p.writePrincipal(this);

    }

    /**

     * Writes a credentials in FCC format to this cache output stream.

     *

     * @param creds the credentials to be written to the output stream.

     * @exception IOException if an I/O exception occurs.

     * @exception Asn1Exception  if an Asn1Exception occurs.

     */

    /*For object data fields which themselves have multiple data fields, such as PrincipalName, EncryptionKey

      HostAddresses, AuthorizationData, I created corresponding write methods (writePrincipal,

      writeKey,...) in each class, since converting the object into FCC format data stream

      should be encapsulated in object itself.

    */

    public void addCreds(Credentials creds) throws IOException, Asn1Exception {

        creds.cname.writePrincipal(this);

        creds.sname.writePrincipal(this);

        creds.key.writeKey(this);

        write32((int)(creds.authtime.getTime()/1000));

        if (creds.starttime != null)

            write32((int)(creds.starttime.getTime()/1000));

        else write32(0);

        write32((int)(creds.endtime.getTime()/1000));

        if (creds.renewTill != null)

            write32((int)(creds.renewTill.getTime()/1000));

        else write32(0);

        if (creds.isEncInSKey) {

            write8(1);

        }

        else write8(0);

        writeFlags(creds.flags);

        if (creds.caddr == null)

            write32(0);

        else

            creds.caddr.writeAddrs(this);

        if (creds.authorizationData == null) {

            write32(0);

        }

        else

            creds.authorizationData.writeAuth(this);

        writeTicket(creds.ticket);

        writeTicket(creds.secondTicket);

    }

    public void addConfigEntry(PrincipalName cname, CredentialsCache.ConfigEntry e)

            throws IOException {

        cname.writePrincipal(this);

        e.getSName().writePrincipal(this);

        write16(0); write16(0); write32(0);

        write32(0); write32(0); write32(0); write32(0);

        write8(0);

        write32(0);

        write32(0);

        write32(0);

        write32(e.getData().length);

        write(e.getData());

        write32(0);

    }

    void writeTicket(Ticket t) throws IOException, Asn1Exception {

        if (t == null) {

            write32(0);

        }

        else {

            byte[] bytes = t.asn1Encode();

            write32(bytes.length);

            write(bytes, 0, bytes.length);

        }

    }

    void writeFlags(TicketFlags flags) throws IOException {

        int tFlags = 0;

        boolean[] f = flags.toBooleanArray();

        if (f[1] == true) {

            tFlags |= TKT_FLG_FORWARDABLE;

        }

        if (f[2] == true) {

            tFlags |= TKT_FLG_FORWARDED;

        }

        if (f[3] == true) {

            tFlags |= TKT_FLG_PROXIABLE;

        }

        if (f[4] == true) {

            tFlags |= TKT_FLG_PROXY;

        }

        if (f[5] == true) {

            tFlags |= TKT_FLG_MAY_POSTDATE;

        }

        if (f[6] == true) {

            tFlags |= TKT_FLG_POSTDATED;

        }

        if (f[7] == true) {

            tFlags |= TKT_FLG_INVALID;

        }

        if (f[8] == true) {

            tFlags |= TKT_FLG_RENEWABLE;

        }

        if (f[9] == true) {

            tFlags |= TKT_FLG_INITIAL;

        }

        if (f[10] == true) {

            tFlags |= TKT_FLG_PRE_AUTH;

        }

        if (f[11] == true) {

            tFlags |= TKT_FLG_HW_AUTH;

        }

        write32(tFlags);

    }

}