/*
      The Browser Client Information Class
            by Jim Mach
*/


import java.net.*;

import ErrorHandler;


public class ClientInfo
{
   String client_name = null;
   String client_address = null;
   String client_name2 = null;
   String client_address2 = null;
   String operating_system = null;
   String system = null;
   String browser = null;
   String java_version = null;
   String java_vendor = null;
   String user_name = null;
   String user_dir = null;
   String user_javadir = null;
   String file_system = null;
   String tmp_string;

   ErrorHandler error = new ErrorHandler();


   public void GetInfo(boolean conn_flag)
   {
      int i = 0;
      byte[] ip_address = new byte[4];
      int[] addr = new int[4];
      String browser_name;
      InetAddress local_client = null;

      browser_name = System.getProperty("browser");
      if (browser_name.indexOf("ActiveX") == -1)
      {
         browser = System.getProperty("browser") + " " + System.getProperty("browser.version");
      }
      else
      {
         browser = System.getProperty("browser");
      }

      if (conn_flag == true)
      {
         try {
            client_name = local_client.getLocalHost().getHostName();
            ip_address = local_client.getLocalHost().getAddress();

            for (i = 0; i < 4; i++)
            {
               addr[i] = ip_address[i];
               if (ip_address[i] < 0)
               {
                  addr[i] = 256 + ip_address[i];
               }
            }
            client_address = addr[0] + "." + addr[1] + "." + addr[2] + "." + addr[3]; 
         }
         catch(UnknownHostException e) {error.ShowError(e, "Error in GetInfo()");}
      }

      operating_system = System.getProperty("os.name") + " " + System.getProperty("os.version");
      system = System.getProperty("os.arch");
      java_version = System.getProperty("java.version") + " " + System.getProperty("java.class.version");
      java_vendor = System.getProperty("java.vendor") + " " + System.getProperty("java.vendor.url");

      if ((conn_flag == false) && (browser_name.indexOf("ActiveX") == -1))
      {
         user_name = System.getProperty("user.name");
         user_dir = System.getProperty("user.dir") + " " + System.getProperty("user.home");
         user_javadir = System.getProperty("java.home") + " " + System.getProperty("java.class.path");
         file_system = System.getProperty("com.ms.sysdir") + " " + System.getProperty("com.ms.windir");
      }
   }


   public void GetInfo(ServerSocket client_conn)
   {
      int i = 0;
      byte[] ip_address = new byte[4];
      int[] addr = new int[4];
      InetAddress client_info;

      client_info = client_conn.getInetAddress();
      try {
         client_name2 = client_info.getHostName();
         ip_address = client_info.getAddress();

         for (i = 0; i < 4; i++)
         {
            addr[i] = ip_address[i];
            if (ip_address[i] < 0)
            {
               addr[i] = 256 + ip_address[i];
            }
         }
         client_address2 = addr[0] + "." + addr[1] + "." + addr[2] + "." + addr[3]; 
      }
      catch(UnknownHostException e) {error.ShowError(e, "Error in GetInfo()");}
   }


   public String FormatInfo(char delimeter)
   {
      String output = null;

      output = "IP Name (client): " + client_name + delimeter +
               "IP Address (client): " + client_address + delimeter +
               "IP Name (server): " + client_name2 + delimeter +
               "IP Address (server): " + client_address2 + delimeter +
               "Operating Sys: " + operating_system + delimeter +
               "System: " + system + delimeter +
               "Browser: " + browser + delimeter +
               "Java Ver: " + java_version + delimeter +
               "Java Vendor: " + java_vendor + delimeter +
               "User Name: " + user_name + delimeter +
               "User Dir: " + user_dir + delimeter +
               "User Java Dir: " + user_javadir + delimeter +
               "File Sys: " + file_system + delimeter + delimeter;

      return(output);
   }


   public void UnFormatInfo(String input_string, char delimeter)
   {
      tmp_string = new String(input_string);
      client_name = ParseData(":", delimeter);
      client_address = ParseData(":", delimeter);
      client_name2 = ParseData(":", delimeter);
      client_address2 = ParseData(":", delimeter);
      operating_system = ParseData(":", delimeter);
      system  = ParseData(":", delimeter);
      browser = ParseData(":", delimeter);
      java_version = ParseData(":", delimeter);
      java_vendor = ParseData(":", delimeter);
      user_dir = ParseData(":", delimeter);
      user_javadir = ParseData(":", delimeter);
      file_system = ParseData(":", delimeter);
   }


   public String ParseData(String start_delimeter, char end_delimeter)
   {
      int begin_index = 0;
      int end_index = 0;
      String out_string = null;

      if (start_delimeter != null)
      {
         begin_index = tmp_string.indexOf(start_delimeter) + 1;
      }

      end_index = tmp_string.indexOf(end_delimeter);

      try {
         out_string = tmp_string.substring(begin_index, end_index);
         tmp_string = tmp_string.substring(end_index + 1, tmp_string.length());
      }
      catch (StringIndexOutOfBoundsException e) {error.ShowError(e, "Error in ParseData()");}

      return(out_string.trim());
   }

}