1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package sun.security.ssl;

    27 

    28 /**

    29  * Enum for SSL/(D)TLS content types.

    30  */

    31 enum ContentType {

    32     INVALID             ((byte)0,   "invalid",

    33                             ProtocolVersion.PROTOCOLS_OF_13),

    34     CHANGE_CIPHER_SPEC  ((byte)20,  "change_cipher_spec",

    35                             ProtocolVersion.PROTOCOLS_TO_12),

    36     ALERT               ((byte)21,  "alert",

    37                             ProtocolVersion.PROTOCOLS_TO_13),

    38     HANDSHAKE           ((byte)22,  "handshake",

    39                             ProtocolVersion.PROTOCOLS_TO_13),

    40     APPLICATION_DATA    ((byte)23,  "application_data",

    41                             ProtocolVersion.PROTOCOLS_TO_13);

    42 

    43     final byte id;

    44     final String name;

    45     final ProtocolVersion[] supportedProtocols;

    46 

    47     private ContentType(byte id, String name,

    48             ProtocolVersion[] supportedProtocols) {

    49         this.id = id;

    50         this.name = name;

    51         this.supportedProtocols = supportedProtocols;

    52     }

    53 

    54     static ContentType valueOf(byte id) {

    55         for (ContentType ct : ContentType.values()) {

    56             if (ct.id == id) {

    57                 return ct;

    58             }

    59         }

    60 

    61         return null;

    62     }

    63 

    64     static String nameOf(byte id) {

    65         for (ContentType ct : ContentType.values()) {

    66             if (ct.id == id) {

    67                 return ct.name;

    68             }

    69         }

    70 

    71         return "<UNKNOWN CONTENT TYPE: " + (id & 0x0FF) + ">";

    72     }

    73 }