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a3b510ab NR |
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 | } |