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 * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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/*
 *
 *  (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 sun.security.krb5.*;
import sun.security.krb5.internal.*;

public class Credentials {

    PrincipalName cname;
    PrincipalName sname;
    EncryptionKey key;
    KerberosTime authtime;
    KerberosTime starttime;//optional
    KerberosTime endtime;
    KerberosTime renewTill; //optional
    HostAddresses caddr; //optional; for proxied tickets only
    AuthorizationData authorizationData; //optional, not being actually used
    public boolean isEncInSKey;  // true if ticket is encrypted in another ticket's skey
    TicketFlags flags;
    Ticket ticket;
    Ticket secondTicket; //optional

    public Credentials(
            PrincipalName new_cname,
            PrincipalName new_sname,
            EncryptionKey new_key,
            KerberosTime new_authtime,
            KerberosTime new_starttime,
            KerberosTime new_endtime,
            KerberosTime new_renewTill,
            boolean new_isEncInSKey,
            TicketFlags new_flags,
            HostAddresses new_caddr,
            AuthorizationData new_authData,
            Ticket new_ticket,
            Ticket new_secondTicket) {
        cname = (PrincipalName) new_cname.clone();
        sname = (PrincipalName) new_sname.clone();
        key = (EncryptionKey) new_key.clone();

        authtime = new_authtime;
        starttime = new_starttime;
        endtime = new_endtime;
        renewTill = new_renewTill;

        if (new_caddr != null) {
            caddr = (HostAddresses) new_caddr.clone();
        }
        if (new_authData != null) {
            authorizationData = (AuthorizationData) new_authData.clone();
        }

        isEncInSKey = new_isEncInSKey;
        flags = (TicketFlags) new_flags.clone();
        ticket = (Ticket) (new_ticket.clone());
        if (new_secondTicket != null) {
            secondTicket = (Ticket) new_secondTicket.clone();
        }
    }

    public Credentials(
            KDCRep kdcRep,
            Ticket new_secondTicket,
            AuthorizationData new_authorizationData,
            boolean new_isEncInSKey) {
        if (kdcRep.encKDCRepPart == null) //can't store while encrypted
        {
            return;
        }
        cname = (PrincipalName) kdcRep.cname.clone();
        ticket = (Ticket) kdcRep.ticket.clone();
        key = (EncryptionKey) kdcRep.encKDCRepPart.key.clone();
        flags = (TicketFlags) kdcRep.encKDCRepPart.flags.clone();
        authtime = kdcRep.encKDCRepPart.authtime;
        starttime = kdcRep.encKDCRepPart.starttime;
        endtime = kdcRep.encKDCRepPart.endtime;
        renewTill = kdcRep.encKDCRepPart.renewTill;

        sname = (PrincipalName) kdcRep.encKDCRepPart.sname.clone();
        caddr = (HostAddresses) kdcRep.encKDCRepPart.caddr.clone();
        secondTicket = (Ticket) new_secondTicket.clone();
        authorizationData =
                (AuthorizationData) new_authorizationData.clone();
        isEncInSKey = new_isEncInSKey;
    }

    public Credentials(KDCRep kdcRep) {
        this(kdcRep, null);
    }

    public Credentials(KDCRep kdcRep, Ticket new_ticket) {
        sname = (PrincipalName) kdcRep.encKDCRepPart.sname.clone();
        cname = (PrincipalName) kdcRep.cname.clone();
        key = (EncryptionKey) kdcRep.encKDCRepPart.key.clone();
        authtime = kdcRep.encKDCRepPart.authtime;
        starttime = kdcRep.encKDCRepPart.starttime;
        endtime = kdcRep.encKDCRepPart.endtime;
        renewTill = kdcRep.encKDCRepPart.renewTill;
        // if (kdcRep.msgType == Krb5.KRB_AS_REP) {
        //    isEncInSKey = false;
        //    secondTicket = null;
        //  }
        flags = kdcRep.encKDCRepPart.flags;
        if (kdcRep.encKDCRepPart.caddr != null) {
            caddr = (HostAddresses) kdcRep.encKDCRepPart.caddr.clone();
        } else {
            caddr = null;
        }
        ticket = (Ticket) kdcRep.ticket.clone();
        if (new_ticket != null) {
            secondTicket = (Ticket) new_ticket.clone();
            isEncInSKey = true;
        } else {
            secondTicket = null;
            isEncInSKey = false;
        }
    }

    /**
     * Checks if this credential is expired
     */
    public boolean isValid() {
        boolean valid = true;
        if (endtime.getTime() < System.currentTimeMillis()) {
            valid = false;
        } else if (starttime != null) {
            if (starttime.getTime() > System.currentTimeMillis()) {
                valid = false;
            }
        } else {
            if (authtime.getTime() > System.currentTimeMillis()) {
                valid = false;
            }
        }
        return valid;
    }

    public PrincipalName getServicePrincipal() throws RealmException {
        return sname;
    }

    public Ticket getTicket() throws RealmException {
        return ticket;
    }

    public PrincipalName getServicePrincipal2() throws RealmException {
        return secondTicket == null ? null : secondTicket.sname;
    }

    public PrincipalName getClientPrincipal() throws RealmException {
        return cname;
    }

    public sun.security.krb5.Credentials setKrbCreds() {
        // Note: We will not pass authorizationData to s.s.k.Credentials. The
        // field in that class will be passed to Krb5Context as the return
        // value of ExtendedGSSContext.inquireSecContext(KRB5_GET_AUTHZ_DATA),
        // which is documented as the authData in the service ticket. That
        // is on the acceptor side.
        //
        // This class is for the initiator side. Also, authdata inside a ccache
        // is most likely to be the one in Authenticator in PA-TGS-REQ encoded
        // in TGS-REQ, therefore only stored with a service ticket. Currently,
        // in Java, we only reads TGTs.
        return new sun.security.krb5.Credentials(ticket, cname, null, sname,
                null, key, flags, authtime, starttime, endtime, renewTill,
                caddr);
    }

    public KerberosTime getStartTime() {
        return starttime;
    }

    public KerberosTime getAuthTime() {
        return authtime;
    }

    public KerberosTime getEndTime() {
        return endtime;
    }

    public KerberosTime getRenewTill() {
        return renewTill;
    }

    public TicketFlags getTicketFlags() {
        return flags;
    }

    public int getEType() {
        return key.getEType();
    }

    public EncryptionKey getKey() {
        return key;
    }

    public int getTktEType() {
        return ticket.encPart.getEType();
    }

    public int getTktEType2() {
        return (secondTicket == null) ? 0 : secondTicket.encPart.getEType();
    }
}
