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package examples; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import org.apache.commons.net.telnet.TelnetClient; |
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import org.apache.commons.net.telnet.TelnetNotificationHandler; |
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import org.apache.commons.net.telnet.SimpleOptionHandler; |
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import org.apache.commons.net.telnet.EchoOptionHandler; |
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import org.apache.commons.net.telnet.TerminalTypeOptionHandler; |
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import org.apache.commons.net.telnet.SuppressGAOptionHandler; |
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import org.apache.commons.net.telnet.InvalidTelnetOptionException; |
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import java.util.StringTokenizer; |
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public class TelnetClientExample implements Runnable, TelnetNotificationHandler |
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{ |
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static TelnetClient tc = null; |
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public static void main(String[] args) throws IOException |
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{ |
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FileOutputStream fout = null; |
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if(args.length < 1) |
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{ |
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System.err.println("Usage: TelnetClientExample1 <remote-ip> [<remote-port>]"); |
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System.exit(1); |
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} |
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String remoteip = args[0]; |
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int remoteport; |
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if (args.length > 1) |
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{ |
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remoteport = (new Integer(args[1])).intValue(); |
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} |
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else |
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{ |
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remoteport = 23; |
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} |
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try |
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{ |
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fout = new FileOutputStream ("spy.log", true); |
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} |
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catch (Exception e) |
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{ |
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System.err.println( |
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"Exception while opening the spy file: " |
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+ e.getMessage()); |
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} |
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tc = new TelnetClient(); |
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TerminalTypeOptionHandler ttopt = new TerminalTypeOptionHandler("VT100", false, false, true, false); |
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EchoOptionHandler echoopt = new EchoOptionHandler(true, false, class="keyword">true, false); |
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SuppressGAOptionHandler gaopt = new SuppressGAOptionHandler(true, class="keyword">true, class="keyword">true, class="keyword">true); |
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try |
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{ |
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tc.addOptionHandler(ttopt); |
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tc.addOptionHandler(echoopt); |
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tc.addOptionHandler(gaopt); |
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} |
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catch (InvalidTelnetOptionException e) |
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{ |
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System.err.println("Error registering option handlers: " + e.getMessage()); |
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} |
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while (true) |
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{ |
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boolean end_loop = false; |
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try |
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{ |
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tc.connect(remoteip, remoteport); |
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Thread reader = new Thread (class="keyword">new TelnetClientExample()); |
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tc.registerNotifHandler(new TelnetClientExample()); |
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System.out.println("TelnetClientExample"); |
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System.out.println("Type AYT to send an AYT telnet command"); |
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System.out.println("Type OPT to print a report of status of options (0-24)"); |
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System.out.println("Type REGISTER to register a new SimpleOptionHandler"); |
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System.out.println("Type UNREGISTER to unregister an OptionHandler"); |
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System.out.println("Type SPY to register the spy (connect to port 3333 to spy)"); |
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System.out.println("Type UNSPY to stop spying the connection"); |
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reader.start(); |
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OutputStream outstr = tc.getOutputStream(); |
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byte[] buff = new byte[1024]; |
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int ret_read = 0; |
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do |
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{ |
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try |
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ret_read = System.in.read(buff); |
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if(ret_read > 0) |
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if((new String(buff, 0, ret_read)).startsWith("AYT")) |
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{ |
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try |
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{ |
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System.out.println("Sending AYT"); |
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System.out.println("AYT response:" + tc.sendAYT(5000)); |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Exception waiting AYT response: " + e.getMessage()); |
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} |
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} |
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else if((new String(buff, 0, ret_read)).startsWith("OPT")) |
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{ |
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System.out.println("Status of options:"); |
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for(int ii=0; ii<25; ii++) |
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System.out.println("Local Option " + ii + ":" + tc.getLocalOptionState(ii) + " Remote Option " + ii + ":" + tc.getRemoteOptionState(ii)); |
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} |
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else if((new String(buff, 0, ret_read)).startsWith("REGISTER")) |
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{ |
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StringTokenizer st = new StringTokenizer(class="keyword">new String(buff)); |
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try |
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{ |
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st.nextToken(); |
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int opcode = (new Integer(st.nextToken())).class="keyword">intValue(); |
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boolean initlocal = (new Boolean(st.nextToken())).class="keyword">booleanValue(); |
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boolean initremote = (new Boolean(st.nextToken())).class="keyword">booleanValue(); |
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boolean acceptlocal = (new Boolean(st.nextToken())).class="keyword">booleanValue(); |
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boolean acceptremote = (new Boolean(st.nextToken())).class="keyword">booleanValue(); |
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SimpleOptionHandler opthand = new SimpleOptionHandler(opcode, initlocal, initremote, |
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acceptlocal, acceptremote); |
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tc.addOptionHandler(opthand); |
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} |
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catch (Exception e) |
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{ |
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if(e instanceof InvalidTelnetOptionException) |
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{ |
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System.err.println("Error registering option: " + e.getMessage()); |
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} |
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else |
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{ |
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System.err.println("Invalid REGISTER command."); |
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System.err.println("Use REGISTER optcode initlocal initremote acceptlocal acceptremote"); |
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System.err.println("(optcode is an integer.)"); |
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System.err.println("(initlocal, initremote, acceptlocal, acceptremote are boolean)"); |
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} |
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} |
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} |
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else if((new String(buff, 0, ret_read)).startsWith("UNREGISTER")) |
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{ |
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StringTokenizer st = new StringTokenizer(class="keyword">new String(buff)); |
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try |
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{ |
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st.nextToken(); |
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int opcode = (new Integer(st.nextToken())).class="keyword">intValue(); |
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tc.deleteOptionHandler(opcode); |
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} |
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catch (Exception e) |
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{ |
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if(e instanceof InvalidTelnetOptionException) |
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{ |
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System.err.println("Error unregistering option: " + e.getMessage()); |
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} |
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else |
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{ |
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System.err.println("Invalid UNREGISTER command."); |
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System.err.println("Use UNREGISTER optcode"); |
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System.err.println("(optcode is an integer)"); |
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} |
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} |
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} |
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else if((new String(buff, 0, ret_read)).startsWith("SPY")) |
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{ |
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try |
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tc.registerSpyStream(fout); |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Error registering the spy"); |
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} |
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} |
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else if((new String(buff, 0, ret_read)).startsWith("UNSPY")) |
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{ |
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tc.stopSpyStream(); |
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} |
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else |
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{ |
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try |
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outstr.write(buff, 0 , ret_read); |
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outstr.flush(); |
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} |
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catch (Exception e) |
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{ |
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end_loop = true; |
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} |
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} |
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} |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Exception while reading keyboard:" + e.getMessage()); |
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end_loop = true; |
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} |
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} |
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while((ret_read > 0) && (end_loop == false)); |
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try |
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tc.disconnect(); |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Exception while connecting:" + e.getMessage()); |
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} |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Exception while connecting:" + e.getMessage()); |
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System.exit(1); |
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} |
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} |
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} |
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public void receivedNegotiation(int negotiation_code, class="keyword">int option_code) |
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{ |
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String command = null; |
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if(negotiation_code == TelnetNotclass="keyword">ificationHandler.RECEIVED_DO) |
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{ |
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command = "DO"; |
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} |
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else if(negotiation_code == TelnetNotclass="keyword">ificationHandler.RECEIVED_DONT) |
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{ |
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command = "DONT"; |
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} |
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else if(negotiation_code == TelnetNotclass="keyword">ificationHandler.RECEIVED_WILL) |
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{ |
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command = "WILL"; |
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} |
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else if(negotiation_code == TelnetNotclass="keyword">ificationHandler.RECEIVED_WONT) |
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{ |
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command = "WONT"; |
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} |
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System.out.println("Received " + command + " for option code " + option_code); |
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} |
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public void run() |
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{ |
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InputStream instr = tc.getInputStream(); |
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try |
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{ |
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byte[] buff = new byte[1024]; |
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int ret_read = 0; |
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do |
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{ |
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ret_read = instr.read(buff); |
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if(ret_read > 0) |
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{ |
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System.out.print(new String(buff, 0, ret_read)); |
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} |
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} |
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while (ret_read >= 0); |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Exception while reading socket:" + e.getMessage()); |
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} |
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try |
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{ |
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tc.disconnect(); |
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} |
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catch (Exception e) |
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{ |
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System.err.println("Exception while closing telnet:" + e.getMessage()); |
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} |
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} |
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} |
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