import java.io.*;
import java.net.Socket;
import java.util.StringTokenizer;

public class Client
{

    private static Integer portInt;
    private static String addrip;


    public static Boolean PWD(PrintWriter writer, BufferedReader br) throws IOException
    {
        String str = new String();
        writer.println("PWD");
        str = br.readLine();
        if(str.substring(0,3).equals("257")){
            System.out.println("PWD : "+str.substring(3));
            return true;
        }
        return false;
    }

    public static Boolean CWD(PrintWriter writer, BufferedReader br) throws IOException
    {
        String str = new String();
        writer.println("CWD "+"WinXp");
        str = br.readLine();
        //System.out.println(str);
        if(str.substring(0,3).equals("250")){
            System.out.println(str.substring(3));
            return true;
        }
        return false;
    }

    public static Boolean PASV(PrintWriter writer, BufferedReader br) throws IOException
    {
        String str = new String();
        int j=0;
        String tabString[]=new String[6];
        writer.println("PASV"+str);
        str = br.readLine();
        String adresseIp=new String();
        /*Pattern ipPattern=Pattern.compile("[0-9]+,[0-9]+,[0-9]+,[0-9]+");
        String[] test=ipPattern.split(str);
        System.out.println("test --"+test[1]);
        */
        String port = new String();
        StringTokenizer ip = new StringTokenizer(str, "(), ABCDEFGHIJKLMOPQRSTUVWXYZabcdefghijklmnopkrstuvwxyz");


        ip.nextToken();

        if(str.substring(0,3).equals("227")){
            while(ip.hasMoreTokens())
            {
                tabString[j]=ip.nextToken();
                if(j<4) adresseIp=adresseIp+tabString[j]+".";
                else port += tabString[j];
                j++;
            }
            adresseIp=adresseIp.substring(0, adresseIp.length()-1);
            portInt  = Integer.parseInt(tabString[j-2])*256 + Integer.parseInt(tabString[j-1]);
            addrip = adresseIp;
            return true;
        }
        return false;
    }

    public static Boolean STOR(PrintWriter writer, BufferedReader br) throws IOException
    {
        System.out.println(addrip+"  "+portInt.toString());
        Socket socket_file = new Socket(addrip,portInt);
        PrintWriter file_writer = new PrintWriter(
                new BufferedWriter(
                new OutputStreamWriter(socket_file.getOutputStream())),true);

        BufferedReader file_reader = new BufferedReader(
              new InputStreamReader(new FileInputStream("plop.txt"))
              );

        String str_cmd = new String();
        String str_file = new String();
        writer.println("STOR plop.txt");
        str_cmd = br.readLine();
        if(str_cmd.substring(0, 3).equals("150"))
        {
            str_file = file_reader.readLine();
            while(str_file!=null)
            {
                System.out.println(str_file);
                file_writer.println(str_file);

                str_file = file_reader.readLine();
            }
        }

        file_writer.println("FUUUU");
        file_writer.close();
        file_reader.close();
        socket_file.close();
        /*if(str.substring(0,3).equals("150")){
            System.out.println(str.substring(3));
            return true;
        }*/
        return true;
    }

    public static Boolean QUIT(PrintWriter writer, BufferedReader br) throws IOException
    {
        String str = new String();
        writer.println("QUIT");
        str = br.readLine();
        if(str.substring(0,3).equals("221")){
            System.out.println(str.substring(3));
            return true;
        }
        return false;
    }


    public static Boolean connexion(PrintWriter writer, BufferedReader br) throws IOException
    {
        //BufferedReader entree = new BufferedReader(new InputStreamReader(System.in));
    //  String str = new String();
        String user = "e20703933";
        String pass = "pemeenam1";
        String response = new String();
        response = br.readLine();
        //System.out.println(response.substring(0, 3));
        if(response.substring(0,3).equals("220"))
        {
            //System.out.print("Username : ");
            //str = entree.readLine();
            writer.println("USER "+/*str*/user);
            response = br.readLine();
            if(response.substring(0,3).equals("331"))
            {
                /*System.out.print("Password : ");
                str = entree.readLine();*/

                writer.println("PASS "+/*str*/pass);
                response = br.readLine();
                if(response.substring(0,3).equals("230"))
                {
                    System.out.println("Connection successfull !");
                    return true;
                }
                System.out.println("Wrong password");
                return false;

            }
            return false;
        }
        System.out.println(response);
        return false;
    }

    public static void main(String [] args) {
        System.getProperties().put("http.proxyHost", "proxyubo.univ-brest.fr");
        System.getProperties().put("http.proxyPort", "3128");

        try{

            String addr = "stockage.univ-brest.fr";
            Socket sock = new Socket(addr,21);

            PrintWriter writer = new PrintWriter(
                      new BufferedWriter(
                         new OutputStreamWriter(sock.getOutputStream())),
                      true);

            BufferedReader br = new BufferedReader(
                    new InputStreamReader(sock.getInputStream())
                    );

            if(connexion(writer,br)){
                if(PWD(writer,br))
                {
                    if(CWD(writer,br))
                    {
                        if(PWD(writer,br))
                        {
                            if(PASV(writer,br)){
                                STOR(writer,br);
                                //PWD(writer,br);
                                QUIT(writer,br);
                            }
                        }
                    }
                }
            }


            writer.println("END") ;
            br.close();
            writer.close();
            sock.close();

        }catch (IOException ioe){}
    }

}