JSP Auto Log -In

Eku · #1 (**permalink**) 09-05-2008, 06:31 AM

Do anyone know how can i make this thing work? here is the code and the Story. . .

Code:

<%-- 
    Document   : index
    Created on : 
    Author     : Eku
--%>


<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <%
        String ua = request.getHeader( "User-Agent" );
        boolean isMSIE = ( ua != null && ua.indexOf( "MSIE" ) != -1 );
        response.setHeader( "Vary", "User-Agent" );

        String hehe = "";
        %>
        <script language="JavaScript">
        <!--
        var nHist = window.history.length;
        if(window.history[nHist] != window.location)
          window.history.forward();
        //-->
        </script>
        <%@ page import="sun.misc.BASE64Encoder" %>
        <%@ page import="java.io.*" %>
                <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Toll ReBilling System</title>
</head>
    <body bgproperties="fixed" background="BGLOGO.jpg" topmargin=3 link="#7E7E7E" vlink="#000000" alink="#FF9D9D">


<BR><div id="Ulo" style="height:150px; width:100%" align="center">
    <h1>Toll ReBilling System</h1>
        <h2>Log-In Page</h2></div>
        <div id="Katawan" style="height:375px; width:100%" align="center">
            <form action="loginservlet?action=LOGIN" method="post">
            <%String Username = null; int flag = 0;
                String auth = request.getHeader("Authorization");
                if (auth == null) {
                        response.setStatus(response.SC_UNAUTHORIZED);
                        response.setHeader("WWW-Authenticate", "NTLM");
                        return;
                }
                if (auth.startsWith("NTLM ")) { 
                        byte[] msg = 
                           new sun.misc.BASE64Decoder().decodeBuffer(auth.substring(5));
                        int off = 0, length, offset;
                        String s;

                        if (msg[8] == 1) { 
                            off = 18;

                            byte z = 0;
                            byte[] msg1 =
                                {(byte)'N', (byte)'T', (byte)'L', (byte)'M', (byte)'S',
                                (byte)'S', (byte)'P', z,
                                (byte)2, z, z, z, z, z, z, z,
                                (byte)40, z, z, z, (byte)1, (byte)130, z, z,
                                z, (byte)2, (byte)2, (byte)2, z, z, z, z, // 
                                z, z, z, z, z, z, z, z};
                            // 
                            response.setStatus(response.SC_UNAUTHORIZED);
                            response.setHeader("WWW-Authenticate", "NTLM " 
                               + new sun.misc.BASE64Encoder().encodeBuffer(msg1).trim());
                            return;
                        } 
                        else if (msg[8] == 3) { 
                                off = 30;
                                length = msg[off+17]*256 + msg[off+16];
                                offset = msg[off+19]*256 + msg[off+18];
                                s = new String(msg, offset, length);
                        } 
                        else
                                return;

                        length = msg[off+1]*256 + msg[off];
                        offset = msg[off+3]*256 + msg[off+2];
                        s = new String(msg, offset, length);
                        length = msg[off+9]*256 + msg[off+8];
                        offset = msg[off+11]*256 + msg[off+10];
                        s = new String(msg, offset, length);
                        Username = s;
                        } //http://www.rgagnon.com/javadetails/java-0441.html
                

                               String line;
                    BufferedReader in = new BufferedReader(new FileReader("E:\\TRBS\\UsersData\\users.txt"));
                    flag = 0;
                    while ((line = in.readLine()) != null) {
                    if (Username.equalsIgnoreCase(line)){
                            flag = 1;
                        }else{
                            
                        }
                    }
                    in.close();
                
                
        String Message = (String) request.getAttribute("mess");
            if (Username.equals(null)){
                Message = "UNAUTHORIZED ACCESS";
                hehe = "disabled";
            } else if ((!Username.equals(null))&&(flag==1)){
                Message = "<h2>Welcome " + Username 
                        + "</h2><BR><h5>Please press OK to continue</h5>"
                        + "<input type=\"submit\" value=\"   Ok   \"/>";
            }
            if (!isMSIE){
                Message = "Browser Not Supported";
                hehe = "disabled";
            }
        %>
        
            <table>
                <tr>
                    <td><%=Message%></td>
                    <td><input type = "hidden" name="user" value = <%=Username%> ></td>        
                </tr>

            </table> 
            
        </form>
        </div>
    
    
    <div id="ilalim" style="position:absolute; top:550px; width:100%">
        <CENTER><a href="http://www.pldt.com.ph/" title="visit website">Philippine Long Distance Telephone Company (PLDT)</a> 
        2008 All rights reserved.</CENTER>
    </div>
    
    <%--
    This example uses JSTL, uncomment the taglib directive above.
    To test, display the page like this: index.jsp?sayHello=true&name=Murphy
    --%>
    <%--
    <c:if test="${param.sayHello}">
        <!-- Let's welcome the user ${param.name} -->
        Hello ${param.name}!
    </c:if>
    --%>
    
    </body>
</html>

This code is for IE only. I have this part of the code that gives the ??? in my head

Code:

if (Username.equalsIgnoreCase(line)){
                            flag = 1;
                        }

Username is eku
the file contains eku

The output of both strings are "eku" and "eku" they are the same. Is there any problem with the use of encoding? can anyone help me please . . . ^_^ Thanks

sukatoa · #2 (**permalink**) 09-06-2008, 05:35 AM

For me,

String's equalsIgnoreCase() method should only be use if the Object that is being compared in another Object is a String.... No other than that.....

(theory)
if it was converted in bytes(depends on the platform), then that bytes are passed on other platform, Converted again to String, It may affect the encoding.... Im not sure(though i don't really know the exact mechanism)

try to use Collator class

Eku · #3 (**permalink**) 09-12-2008, 06:53 AM

Its ok now. i found the solution although its not java. ^_^ i used javascript and ActiveX function to get the domain and username and pass it to my servlet. Its kind of tricky but the code is much short about 5 lines to get the values and submit it to my servlet. But the problem is it works only for I.E. 7 and up so i had to make some restrictions on that, about almost everyone here uses I.E. except me i prefer other browsers. That is the legal browser in our company.

And another info for JSP, refrain from using .trim() and .substring() function. . . uhmmm in my case sometimes i works most of the times it doesnt. i just used the long method which is the Char Array

nhy520 · #4 (**permalink**) 09-18-2008, 04:58 AM

up this way