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* Project Name:   PC health of remote sever
* Programmer:   Sumit Agarwal
* Type:   Network
* Technology:  Java
* IDE:   Any
* Description:   I have created a socket4444 on a PC which I treat as a server.
Now using my PC I am firing all system and DOS commands on the server and getting response of same on my PC.


Code:
// To be run at server side and will act as a server
// MainServer.java

import java.net.*;
import java.io.*;

public class MainServer {
    public static void main(String[] args) throws IOException {

        ServerSocket serverSocket = null;
        try {
            serverSocket = new ServerSocket(4445);
        } catch (IOException e) {
            System.err.println("Could not listen on port: 4445.");
            System.exit(1);
        }

        Socket clientSocket = null;
        try {
            clientSocket = serverSocket.accept();
        } catch (IOException e) {
            System.err.println("Accept failed.");
            System.exit(1);
        }

       PrintWriter out = new PrintWriter(clientSocket.getOutputStream(),true);
        BufferedReader in = new BufferedReader(
        new InputStreamReader(
        clientSocket.getInputStream()));
        String inputLine, outputLine;
        MainProtocol kkp = new MainProtocol();

//        outputLine = kkp.processInput(null);
//        out.println(outputLine);

        while ((inputLine = in.readLine()) != null) {
        if (inputLine.equals("bye"))
                break;
             outputLine = kkp.processInput(inputLine);
             out.println(outputLine);
         outputLine = null;

        }
        out.close();
        in.close();
        clientSocket.close();
        serverSocket.close();
    }
}
 

Code:
// Server side component used to execute commands and returning result
// MainProtocol.java


import java.lang.*;
import java.io.*;
public class MainProtocol {
    String sa,sb;
//    String sb,sa;

    public String processInput(String args) {
        try {
        sb = new String();
        sa  = new String();
        Runtime rt=Runtime.getRuntime();
        Process p=rt.exec("cmd /c "+ args);
        InputStream is = p.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        while ((sb = br.readLine()) != null)
        {
        sa += sb ;
        //    sa +="
";
        }

        p.waitFor();
        System.out.println("
process "+p.exitValue());
        } catch(Exception e) {
        System.out.println(e.getMessage()+ "
sumit");
        }

        return sa ;
    }
}


Code:


// Client side component. Commands are to fired from here only
// MainClient.java

import java.io.*;
import java.net.*;

public class MainClient {

    public static void main(String[] args) throws IOException {

        Socket kkSocket = null;
        PrintWriter out = null;
        BufferedReader in = null;
        try {
            kkSocket = new Socket("10.37.32.74", 4445);
            out = new PrintWriter(kkSocket.getOutputStream(), true);
            in = new BufferedReader(new
InputStreamReader(kkSocket.getInputStream()));
        } catch (UnknownHostException e) {
            System.err.println("Exception " + e);
            System.exit(1);
        } catch (IOException e) {
            System.err.println("Couldn't get I/O for the connection.");
            System.exit(1);
        }

        BufferedReader stdIn = new BufferedReader(new
InputStreamReader(System.in));
        String fromServer;
        String fromUser;

        while ((fromUser = stdIn.readLine()) != "hi") {
//            System.out.println("Server: " + fromServer);
//            if (fromServer.equals("Bye."))
//                break;

//            fromUser = stdIn.readLine();

        if (fromUser != null) {
//                System.out.println("Client: " + fromUser);
                out.println(fromUser);
        fromServer = in.readLine();
        System.out.println("Server Response: "+ fromServer);
        fromServer = null;
        if (fromUser.equals("bye"))
                break;
        }
        }

        out.close();
        in.close();
        stdIn.close();
        kkSocket.close();
    }
}
 





Author:
Mastermind
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