| 1 | /* |
| 2 | * This file is part of lanterna (http://code.google.com/p/lanterna/). |
| 3 | * |
| 4 | * lanterna is free software: you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU Lesser General Public License as published by |
| 6 | * the Free Software Foundation, either version 3 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU Lesser General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU Lesser General Public License |
| 15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | * |
| 17 | * Copyright (C) 2010-2015 Martin |
| 18 | */ |
| 19 | package com.googlecode.lanterna.terminal.ansi; |
| 20 | |
| 21 | import java.lang.reflect.Field; |
| 22 | import java.util.Collections; |
| 23 | import java.util.HashMap; |
| 24 | import java.util.Map; |
| 25 | |
| 26 | /** |
| 27 | * Contains the telnet protocol commands, although not a complete set. |
| 28 | * @author Martin |
| 29 | */ |
| 30 | class TelnetProtocol { |
| 31 | public static final byte COMMAND_SUBNEGOTIATION_END = (byte)0xf0; //SE |
| 32 | public static final byte COMMAND_NO_OPERATION = (byte)0xf1; //NOP |
| 33 | public static final byte COMMAND_DATA_MARK = (byte)0xf2; //DM |
| 34 | public static final byte COMMAND_BREAK = (byte)0xf3; //BRK |
| 35 | public static final byte COMMAND_INTERRUPT_PROCESS = (byte)0xf4; //IP |
| 36 | public static final byte COMMAND_ABORT_OUTPUT = (byte)0xf5; //AO |
| 37 | public static final byte COMMAND_ARE_YOU_THERE = (byte)0xf6; //AYT |
| 38 | public static final byte COMMAND_ERASE_CHARACTER = (byte)0xf7; //EC |
| 39 | public static final byte COMMAND_ERASE_LINE = (byte)0xf8; //WL |
| 40 | public static final byte COMMAND_GO_AHEAD = (byte)0xf9; //GA |
| 41 | public static final byte COMMAND_SUBNEGOTIATION = (byte)0xfa; //SB |
| 42 | public static final byte COMMAND_WILL = (byte)0xfb; |
| 43 | public static final byte COMMAND_WONT = (byte)0xfc; |
| 44 | public static final byte COMMAND_DO = (byte)0xfd; |
| 45 | public static final byte COMMAND_DONT = (byte)0xfe; |
| 46 | public static final byte COMMAND_IAC = (byte)0xff; |
| 47 | |
| 48 | public static final byte OPTION_TRANSMIT_BINARY = (byte)0x00; |
| 49 | public static final byte OPTION_ECHO = (byte)0x01; |
| 50 | public static final byte OPTION_SUPPRESS_GO_AHEAD = (byte)0x03; |
| 51 | public static final byte OPTION_STATUS = (byte)0x05; |
| 52 | public static final byte OPTION_TIMING_MARK = (byte)0x06; |
| 53 | public static final byte OPTION_NAOCRD = (byte)0x0a; |
| 54 | public static final byte OPTION_NAOHTS = (byte)0x0b; |
| 55 | public static final byte OPTION_NAOHTD = (byte)0x0c; |
| 56 | public static final byte OPTION_NAOFFD = (byte)0x0d; |
| 57 | public static final byte OPTION_NAOVTS = (byte)0x0e; |
| 58 | public static final byte OPTION_NAOVTD = (byte)0x0f; |
| 59 | public static final byte OPTION_NAOLFD = (byte)0x10; |
| 60 | public static final byte OPTION_EXTEND_ASCII = (byte)0x01; |
| 61 | public static final byte OPTION_TERMINAL_TYPE = (byte)0x18; |
| 62 | public static final byte OPTION_NAWS = (byte)0x1f; |
| 63 | public static final byte OPTION_TERMINAL_SPEED = (byte)0x20; |
| 64 | public static final byte OPTION_TOGGLE_FLOW_CONTROL = (byte)0x21; |
| 65 | public static final byte OPTION_LINEMODE = (byte)0x22; |
| 66 | public static final byte OPTION_AUTHENTICATION = (byte)0x25; |
| 67 | |
| 68 | public static final Map<String, Byte> NAME_TO_CODE = createName2CodeMap(); |
| 69 | public static final Map<Byte, String> CODE_TO_NAME = reverseMap(NAME_TO_CODE); |
| 70 | |
| 71 | private static Map<String, Byte> createName2CodeMap() { |
| 72 | Map<String, Byte> result = new HashMap<String, Byte>(); |
| 73 | for(Field field: TelnetProtocol.class.getDeclaredFields()) { |
| 74 | if(field.getType() != byte.class || (!field.getName().startsWith("COMMAND_") && !field.getName().startsWith("OPTION_"))) { |
| 75 | continue; |
| 76 | } |
| 77 | try { |
| 78 | String namePart = field.getName().substring(field.getName().indexOf("_") + 1); |
| 79 | result.put(namePart, (Byte)field.get(null)); |
| 80 | } |
| 81 | catch(IllegalAccessException ignored) { |
| 82 | } |
| 83 | catch(IllegalArgumentException ignored) { |
| 84 | } |
| 85 | } |
| 86 | return Collections.unmodifiableMap(result); |
| 87 | } |
| 88 | |
| 89 | private static <V,K> Map<V,K> reverseMap(Map<K,V> n2c) { |
| 90 | Map<V, K> result = new HashMap<V,K>(); |
| 91 | for (Map.Entry<K, V> e : n2c.entrySet()) { |
| 92 | result.put(e.getValue(), e.getKey()); |
| 93 | } |
| 94 | return Collections.unmodifiableMap(result); |
| 95 | } |
| 96 | /** Cannot instantiate. */ |
| 97 | private TelnetProtocol() {} |
| 98 | } |