// Javas tehtud fake finger server
import java.io.*;
import java.net.*;
import java.util.Date;
public class Finger{
  public static void main(String argumendid[]) throws IOException{
    ServerSocket ss=new ServerSocket(79);


    while(true){
      new Fingerloim(ss.accept());
    }
  }
}

class Fingerloim extends Thread{
   Socket sc;

   public Fingerloim(Socket uus_sc){
     sc=uus_sc;
     start();

   }
   public void run(){
   String segased="~!#¤%&/()=?`'*üõäöÕÜÖÄ£$€[]]}{½.:,;+-_<>|";

     try{
       PrintWriter error=new PrintWriter(sc.getOutputStream(), true);
       PrintWriter valja=new PrintWriter(sc.getOutputStream(), true);
       BufferedReader sisse=new BufferedReader(
         new InputStreamReader(sc.getInputStream())
       ); 
       String nimi=sisse.readLine();
       valja.println("QNX Realtime Platform Server (built 0.98).");
       valja.println("(C) Copyright 1985-2001 QNX Corp.");
       valja.println("Finger connection established...");
       valja.println("");
       valja.println("[mail.hk.tpu.ee]");
		 // --- Logi start ---
          PrintWriter logi=new PrintWriter(
  			 new FileWriter("finger.log", true)
   			);
         logi.println("Uuriti infot kasutajanime: "+nimi+" kohta "+new Date());
         logi.close();
		// --- Logi lõpp ---
       boolean leidub=false;
       for(int i=0; i<nimi.length(); i++){
         if(segased.indexOf(nimi.substring(i, i+1))>=0)leidub=true;
       }

       if(leidub==true){
        	  valja.println("");
                  valja.println("No such user...");
		} else{
         if(nimi.equals("root")){
         valja.println("");
         valja.println("Finger connection refused...");
         valja.println("You cannot finger root user");
         valja.println("Finger connection closed...");
         } else if(nimi.equals("mail")){
         valja.println("");
         valja.println("Finger connection refused...");
         valja.println("You cannot finger Mail user");
         valja.println("Finger connection closed...");
         } else if(nimi.equals("apache")){
         valja.println("");
         valja.println("Finger connection refused...");
         valja.println("You cannot finger Apache user");
         valja.println("Finger connection closed...");
          } else if(nimi.equals("news")){
         valja.println("");
         valja.println("Finger connection refused...");
         valja.println("You cannot finger News user");
         valja.println("Finger connection closed...");
          } else if(nimi.equals("")){
         valja.println("");
         valja.println("Please specify user name.");
          } else if(nimi.equals("admin")){
         valja.println("");
         valja.println("No such user");
         } else if(nimi.equals("administrator")){
         valja.println("");
         valja.println("No such user");
         } else if(nimi.equals("kala")){
         valja.println("");
         valja.println("No such user");
          } else if(nimi.startsWith("kala")){
         valja.println("");
         valja.println("No such user");
         } else if(nimi.equals("samba")){
         valja.println("");
         valja.println("Finger connection refused...");
         valja.println("You cannot finger Samba user");
         valja.println("Finger connection closed...");
         } else{
			 boolean kolemas=false;
			 boolean polemas=false;	 
		 File kataloog=new File("users");
         if(kataloog.isDirectory()){ 
	     String[] failid=kataloog.list();
			for(int i=0; i<failid.length; i++){
				if (failid[i].equals(nimi+".db")){
					kolemas=true;
				}
				else {
					polemas=true; 
				}
			
			}
		  if(kolemas==false){
        	  if(polemas==true){
        	  valja.println("");
                  valja.println("No such user...");
					} else{
				   valja.println("");
				   sc.close();
			  } 
		 } else{ 	
		 BufferedReader sisse3=new BufferedReader(
         new FileReader("users"+File.separator+nimi+".db")
         );	 
         String rida=sisse3.readLine();
         valja.println("");
         valja.println("Login: "+nimi+"     Name: "+rida);
         valja.println("Home directory: /home/"+nimi+"   Shell: /bin/bash");
         rida=sisse3.readLine();
         valja.println("Office: "+rida); //ITEH "+(int)(Math.random()*4)+(int)(Math.random()*3));
         	rida=sisse3.readLine();
                if(rida.equals("yes")){
         		valja.println("On Since " + new Date(new Date().getTime()-2*24*60*(int)(Math.random()*8)*1540)+ " (EET) on pts/"+(int)(Math.random()*12)+" from ws"+(int)(Math.random()*6)+".hk.tpu.ee");
         	} else{
         valja.println("Last login "+ new Date(new Date().getTime()-2*24*60*(int)(Math.random()*9)*1540)+" (EET) on pts/"+(int)(Math.random()*9)+" from ws"+(int)(Math.random()*7)+".hk.tpu.ee");
         }
                rida=sisse3.readLine();
        	   if(rida.equals("no")){
         		valja.println("No mail");
         	} else{
         valja.println("New mail recived "+ new Date(new Date().getTime()-2*24*60*(int)(Math.random()*8)*1540)+" (EET)");
         valja.println("  Unread since "+ new Date(new Date().getTime()-3*24*60*(int)(Math.random()*8)*1000)+" (EET)");
         }
                rida=sisse3.readLine();
                if(rida.equals("no")){
         		valja.println("No plan");
				sisse3.close();
         	} else{
         BufferedReader sisse2=new BufferedReader(
            new FileReader("users"+File.separator+nimi+"plan.db")
            );
         String plan=sisse2.readLine();
         valja.println("Plan");
         while(plan!=null){
                valja.println(plan);
                plan=sisse2.readLine();
         }
        sisse2.close();
		sisse3.close();
				}
      }
		 }
	   }
	   }
       sc.close();
     }catch(Exception e){
     System.out.println(e);


     }
   }
}