+++ /dev/null
-/*
- * Jexer - Java Text User Interface
- *
- * The MIT License (MIT)
- *
- * Copyright (C) 2019 Kevin Lamonte
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * @author Kevin Lamonte [kevin.lamonte@gmail.com]
- * @version 1
- */
-package jexer.net;
-
-import java.io.InputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.net.Socket;
-
-/**
- * This class provides a Socket that performs the telnet protocol to both
- * establish an 8-bit clean no echo channel and expose window resize events
- * to the Jexer ECMA48 backend.
- */
-public class TelnetSocket extends Socket {
-
- // ------------------------------------------------------------------------
- // Constants --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- // Telnet protocol special characters. Note package private access.
- static final int TELNET_SE = 240;
- static final int TELNET_NOP = 241;
- static final int TELNET_DM = 242;
- static final int TELNET_BRK = 243;
- static final int TELNET_IP = 244;
- static final int TELNET_AO = 245;
- static final int TELNET_AYT = 246;
- static final int TELNET_EC = 247;
- static final int TELNET_EL = 248;
- static final int TELNET_GA = 249;
- static final int TELNET_SB = 250;
- static final int TELNET_WILL = 251;
- static final int TELNET_WONT = 252;
- static final int TELNET_DO = 253;
- static final int TELNET_DONT = 254;
- static final int TELNET_IAC = 255;
- static final int C_NUL = 0x00;
- static final int C_LF = 0x0A;
- static final int C_CR = 0x0D;
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * The telnet-aware socket InputStream.
- */
- private TelnetInputStream input;
-
- /**
- * The telnet-aware socket OutputStream.
- */
- private TelnetOutputStream output;
-
-
- /**
- * If true, this is a server socket (i.e. created by accept()).
- */
- boolean isServer = true;
-
- /**
- * If true, telnet ECHO mode is set such that local echo is off and
- * remote echo is on. This is appropriate for server sockets.
- */
- boolean echoMode = false;
-
- /**
- * If true, telnet BINARY mode is enabled. We always want this to
- * ensure a Unicode-safe stream.
- */
- boolean binaryMode = false;
-
- /**
- * If true, the SUPPRESS-GO-AHEAD option is enabled. We always want
- * this.
- */
- boolean goAhead = true;
-
- /**
- * If true, request the client terminal type.
- */
- boolean doTermType = true;
-
- /**
- * If true, request the client terminal speed.
- */
- boolean doTermSpeed = true;
-
- /**
- * If true, request the Negotiate About Window Size option to
- * determine the client text width/height.
- */
- boolean doNAWS = true;
-
- /**
- * If true, request the New Environment option to obtain the client
- * LOGNAME, USER, and LANG variables.
- */
- boolean doEnvironment = true;
-
- /**
- * The terminal type reported by the client.
- */
- String terminalType = "";
-
- /**
- * The terminal speed reported by the client.
- */
- String terminalSpeed = "";
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Creates a Socket that knows the telnet protocol. Note package private
- * access, this is only used by TelnetServerSocket.
- *
- * @throws IOException if an I/O error occurs
- */
- TelnetSocket() throws IOException {
- super();
- }
-
- // ------------------------------------------------------------------------
- // Socket -----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Returns an input stream for this socket.
- *
- * @return the input stream
- * @throws IOException if an I/O error occurs
- */
- @Override
- public InputStream getInputStream() throws IOException {
- if (input == null) {
- assert (output == null);
- output = new TelnetOutputStream(this, super.getOutputStream());
- input = new TelnetInputStream(this, super.getInputStream(), output);
- input.telnetSendOptions();
- }
- return input;
- }
-
- /**
- * Returns an output stream for this socket.
- *
- * @return the output stream
- * @throws IOException if an I/O error occurs
- */
- @Override
- public OutputStream getOutputStream() throws IOException {
- if (output == null) {
- assert (input == null);
- output = new TelnetOutputStream(this, super.getOutputStream());
- input = new TelnetInputStream(this, super.getInputStream(), output);
- input.telnetSendOptions();
- }
- return output;
- }
-
- // ------------------------------------------------------------------------
- // TelnetSocket -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * See if telnet server/client is in ASCII mode.
- *
- * @return if true, this connection is in ASCII mode
- */
- public boolean isAscii() {
- return (!binaryMode);
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff