/*
* Copyright (c) 2010 SimpleServer authors (see CONTRIBUTORS)
*
* 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.
*/
package simpleserver.telnet;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.SocketTimeoutException;
import simpleserver.Server;
import simpleserver.command.CommandFeedback;
import simpleserver.command.InvalidCommand;
import simpleserver.command.ServerCommand;
public class TelnetHandler implements Runnable {
private BufferedReader in;
private BufferedWriter out;
private Socket s;
private TelnetTCP parent;
private Server server;
private boolean authorized = false;
static final int IDLE_TIME = 60 * 1000;
private CommandFeedback feedback = new CommandFeedback() {
public void send(String message, Object... args) {
output(String.format(message, args) + "\n");
}
};
public TelnetHandler(Socket s, TelnetTCP r, Server server) throws IOException {
in = new BufferedReader(new InputStreamReader(s.getInputStream()));
out = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
this.s = s;
parent = r;
this.server = server;
}
public void run() {
String line;
try {
s.setSoTimeout(IDLE_TIME);
output("~> Welcome to SimpleServer remote administration! <~\n\n");
output("Password: ");
String tpass = server.options.get("telnetPassword");
String pwd = in.readLine();
if (tpass != null && !tpass.equals("") && tpass.equals(pwd)) {
authorized = true;
}
while (authorized && !parent.isClosed() && !Thread.interrupted()) {
output("> ");
line = in.readLine();
parent.lastRead = System.currentTimeMillis();
if (line == null || line.equals("exit")) {
output("Bye!\n");
parent.close();
break;
}
parseLine(line);
}
} catch (InterruptedException e1) {
} catch (SocketTimeoutException e) {
} catch (Exception e) {
}
try {
in.close();
out.close();
s.close();
} catch (IOException e) {
}
in = null;
out = null;
parent = null;
}
private void output(String text) {
try {
out.write(text, 0, text.length());
out.flush();
} catch (IOException e) {
}
}
private void parseLine(String command) throws IOException, InterruptedException {
String[] tokens = command.split("\\s");
if (tokens.length == 0) {
return;
}
if (tokens[0].equals("help")) {
output("Commands:\nhelp\nexit\nshow-console\nany valid server commands (no checking!)\n");
return;
}
if (!authorized) {
output("Error: You are not authenticated!\n");
return;
}
if (tokens[0].equals("show-console")) {
String console = "";
String[] consolearray = server.getOutputLog();
for (String i : consolearray) {
console += i + "\n";
}
output(console);
return;
}
String rest = "";
if (tokens.length > 1) {
int idx = command.indexOf(tokens[0]) + tokens[0].length() + 1;
rest = command.substring(idx);
}
ServerCommand serverCommand = server.getCommandParser().getServerCommand(tokens[0]);
if ((serverCommand != null) && !(serverCommand instanceof InvalidCommand)) {
serverCommand.execute(server, command, feedback);
}
if (serverCommand == null || serverCommand.shouldPassThroughToConsole(server)) {
server.runCommand(tokens[0], rest);
}
}
}