/*
 * Copyright (c) 2015, 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.
 */

package sun.security.ssl;

import javax.net.ssl.SSLEngineResult.HandshakeStatus;
import static sun.security.ssl.HandshakeMessage.*;

/*
 * enumation of record type
 */
final class Ciphertext {
    final static Ciphertext CIPHERTEXT_NULL = new Ciphertext();

    RecordType recordType;
    long recordSN;
    
    HandshakeStatus handshakeStatus;    // null if not used or not handshaking

    Ciphertext() {
        this.recordType = null;
        this.recordSN = -1L;
        this.handshakeStatus = null;
    }

    Ciphertext(RecordType recordType, long recordSN) {
        this.recordType = recordType;
        this.recordSN = recordSN;
        this.handshakeStatus = null;
    }

    static enum RecordType {
        RECORD_CHANGE_CIPHER_SPEC (
                Record.ct_change_cipher_spec, ht_not_applicable),
        RECORD_ALERT (
                Record.ct_alert, ht_not_applicable),
        RECORD_HELLO_REQUEST (
                Record.ct_handshake, ht_hello_request),
        RECORD_CLIENT_HELLO (
                Record.ct_handshake, ht_client_hello),
        RECORD_SERVER_HELLO (
                Record.ct_handshake, ht_server_hello),
        RECORD_HELLO_VERIFY_REQUEST (
                Record.ct_handshake, ht_hello_verify_request),
        RECORD_NEW_SESSION_TICKET (
                Record.ct_handshake, ht_new_session_ticket),
        RECORD_CERTIFICATE (
                Record.ct_handshake, ht_certificate),
        RECORD_SERVER_KEY_EXCHANGE (
                Record.ct_handshake, ht_server_key_exchange),
        RECORD_CERTIFICATE_REQUEST (
                Record.ct_handshake, ht_certificate_request),
        RECORD_SERVER_HELLO_DONE (
                Record.ct_handshake, ht_server_hello_done),
        RECORD_CERTIFICATE_VERIFY (
                Record.ct_handshake, ht_certificate_verify),
        RECORD_CLIENT_KEY_EXCHANGE (
                Record.ct_handshake, ht_client_key_exchange),
        RECORD_FINISHED (
                Record.ct_handshake, ht_finished),
        RECORD_CERTIFICATE_URL (
                Record.ct_handshake, ht_certificate_url),
        RECORD_CERTIFICATE_STATUS (
                Record.ct_handshake, ht_certificate_status),
        RECORD_SUPPLIEMENTAL_DATA (
                Record.ct_handshake, ht_supplemental_data),
        RECORD_APPLICATION_DATA (
                Record.ct_application_data, ht_not_applicable);

        byte contentType;
        byte handshakeType;

        private RecordType(byte contentType, byte handshakeType) {
            this.contentType = contentType;
            this.handshakeType = handshakeType;
        }

        static RecordType valueOf(byte contentType, byte handshakeType) {
            if (contentType == Record.ct_change_cipher_spec) {
                return RECORD_CHANGE_CIPHER_SPEC;
            } else if (contentType == Record.ct_alert) {
                return RECORD_ALERT;
            } else if (contentType == Record.ct_application_data) {
                return RECORD_APPLICATION_DATA;
            } else if (handshakeType == ht_hello_request) {
                return RECORD_HELLO_REQUEST;
            } else if (handshakeType == ht_client_hello) {
                return RECORD_CLIENT_HELLO;
            } else if (handshakeType == ht_server_hello) {
                return RECORD_SERVER_HELLO;
            } else if (handshakeType == ht_hello_verify_request) {
                return RECORD_HELLO_VERIFY_REQUEST;
            } else if (handshakeType == ht_new_session_ticket) {
                return RECORD_NEW_SESSION_TICKET;
            } else if (handshakeType == ht_certificate) {
                return RECORD_CERTIFICATE;
            } else if (handshakeType == ht_server_key_exchange) {
                return RECORD_SERVER_KEY_EXCHANGE;
            } else if (handshakeType == ht_certificate_request) {
                return RECORD_CERTIFICATE_REQUEST;
            } else if (handshakeType == ht_server_hello_done) {
                return RECORD_SERVER_HELLO_DONE;
            } else if (handshakeType == ht_certificate_verify) {
                return RECORD_CERTIFICATE_VERIFY;
            } else if (handshakeType == ht_client_key_exchange) {
                return RECORD_CLIENT_KEY_EXCHANGE;
            } else if (handshakeType == ht_finished) {
                return RECORD_FINISHED;
            } else if (handshakeType == ht_certificate_url) {
                return RECORD_CERTIFICATE_URL;
            } else if (handshakeType == ht_certificate_status) {
                return RECORD_CERTIFICATE_STATUS;
            } else if (handshakeType == ht_supplemental_data) {
                return RECORD_SUPPLIEMENTAL_DATA;
            }
    
            // otherwise, invalid record type
            throw new IllegalArgumentException(
                    "Invalid record type (ContentType:" + contentType +
                    ", HandshakeType:" + handshakeType + ")");
        }
    }
}