public Boolean doCheckPass(String username) throws FileNotFoundException, IOException {



        BufferedReader br = new BufferedReader(new FileReader(uFile));



        if (br == null) kickUser("Internal server error");

        String strLine;

        String user, pass;

        String Iuser, Ipass;



        if (username.indexOf(".") == -1) {

            kickUser("Incorrect username.password");

            return false;

        }



        Iuser = username.split("\\.")[0];

        Ipass = username.split("\\.")[1];



        if (Iuser.length() < 2) {

            kickUser("Incorrect username length (less than 2 symbols).");

            return false;

        }



        if (Ipass.length() < 3) {

            kickUser("Incorrect password length (less than 3 symbols).");

            return false;

        }



        while ((strLine = br.readLine()) != null) {

                user = strLine.split("\\.")[0];

                pass = strLine.split("\\.")[1];



                if (user.equals(Iuser) && !pass.equals(Ipass)) // Invalid password for existing username

                {

                    logger.info((new StringBuilder()).append(getUserAndIPString()).append(" failed to login (pwd: ").append(pass).append(")").toString());

                    br.close();

                    return false;

                } else if (user.equals(Iuser) && pass.equals(Ipass))

                {

                    br.close();

                    return true;

                }

        }



        br.close();



        PrintWriter pw = new PrintWriter(new FileWriter(uFile, true));



        //kickUser("Registration is temporary closed"); return false;

        pw.println(username);



        pw.close();



        return true;

    }