+++ /dev/null
-/**
- * Jexer - Java Text User Interface
- *
- * License: LGPLv3 or later
- *
- * This module is licensed under the GNU Lesser General Public License
- * Version 3. Please see the file "COPYING" in this directory for more
- * information about the GNU Lesser General Public License Version 3.
- *
- * Copyright (C) 2015 Kevin Lamonte
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not, see
- * http://www.gnu.org/licenses/, or write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- * @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 final class TelnetSocket extends Socket {
-
- /**
- * The wrapped socket.
- */
- private Socket socket;
-
- /**
- * The telnet-aware socket InputStream.
- */
- private TelnetInputStream input;
-
- /**
- * The telnet-aware socket OutputStream. Note package private access:
- * input sends stuff to output.
- */
- TelnetOutputStream output;
-
- // Telnet protocol special characters. Note package private access.
- public static final int TELNET_SE = 240;
- public static final int TELNET_NOP = 241;
- public static final int TELNET_DM = 242;
- public static final int TELNET_BRK = 243;
- public static final int TELNET_IP = 244;
- public static final int TELNET_AO = 245;
- public static final int TELNET_AYT = 246;
- public static final int TELNET_EC = 247;
- public static final int TELNET_EL = 248;
- public static final int TELNET_GA = 249;
- public static final int TELNET_SB = 250;
- public static final int TELNET_WILL = 251;
- public static final int TELNET_WONT = 252;
- public static final int TELNET_DO = 253;
- public static final int TELNET_DONT = 254;
- public static final int TELNET_IAC = 255;
- public static final int C_NUL = 0x00;
- public static final int C_LF = 0x0A;
- public static final int C_CR = 0x0D;
-
- /**
- * Telnet protocol speaks to a Network Virtual Terminal (NVT).
- */
- class TelnetState {
-
- // General status flags outside the NVT spec
- boolean doInit;
- boolean isServer;
-
- // NVT flags
- boolean echoMode;
- boolean binaryMode;
- boolean goAhead;
- boolean doTermType;
- boolean doTermSpeed;
- boolean doNAWS;
- boolean doEnvironment;
- String terminal = "";
-
- // Flags used by the TelnetInputStream
- boolean iac;
- boolean dowill;
- int dowillType;
- boolean subnegEnd;
- boolean isEof;
- boolean eofMsg;
- boolean readCR;
-
- // Flags used by the TelnetOutputStream
- boolean writeCR;
-
- /**
- * Constuctor calls reset().
- */
- public TelnetState() {
- reset();
- }
-
- /**
- * Reset NVT to default state as per RFC 854.
- */
- public void reset() {
- echoMode = false;
- binaryMode = false;
- goAhead = true;
- doTermType = true;
- doTermSpeed = true;
- doNAWS = true;
- doEnvironment = true;
- doInit = true;
- isServer = true;
-
- iac = false;
- dowill = false;
- subnegEnd = false;
- isEof = false;
- eofMsg = false;
- readCR = false;
-
- writeCR = false;
- }
- }
-
- /**
- * State of the protocol. Note package private access.
- */
- TelnetState nvt;
-
- /**
- * See if telnet server/client is in ASCII mode.
- *
- * @return if true, this connection is in ASCII mode
- */
- public boolean isAscii() {
- return (!nvt.binaryMode);
- }
-
- /**
- * Creates a Socket that knows the telnet protocol.
- *
- * @param socket the underlying Socket
- */
- TelnetSocket(Socket socket) throws IOException {
- super();
- nvt = new TelnetState();
- this.socket = socket;
-
- output = new TelnetOutputStream(this, super.getOutputStream());
- input = new TelnetInputStream(this, super.getInputStream(), output);
-
- // Initiate the telnet protocol negotiation.
- input.telnetSendOptions();
- }
-
- // Socket interface -------------------------------------------------------
-
- /**
- * Returns an input stream for this socket.
- *
- * @return the input stream
- */
- @Override
- public InputStream getInputStream() throws IOException {
- return input;
- }
-
- /**
- * Returns an output stream for this socket.
- *
- * @return the output stream
- */
- @Override
- public OutputStream getOutputStream() throws IOException {
- return output;
- }
-
-}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff