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 }