PHP - Pages Protected With A String.

Hi,

I have built a registration and login system for a website, part of which I wish to protect certain pages.

The registration systems works well, as does the login BUT I am having difficulty with the next stage.

How do I then 'capture' the username and password that were entered by the user and get the PHP page I want to protect to check that these are valid? I guess it is a piece of code I need to put in the top of the protected page?

Here is the final piece of code (which then includes a link to the page I want to protect) from the login page which includes session_register, but then how can I use this information in the page I wish to protect?

//Now if everything is correct let's finish his/her/its login
session_register("username", $username);
session_register("password", $password);

echo "Welcome, ".$username." please continue onto our ".$sub." membership area...<a href=".$index.">click here</a>";
}


Thanks,
Simon

Hello:

I wanted to see if I can make my password protected pages in my admin area, and the login form "more secure."
I was told I should use MD5 / SALTING / HASHING to do this.

I have tried some online tutorials, but am not understanding it, so I wanted to start from what I have and build upon it>

This is my database table storing the myAdmins data (when I initially insert it into the database):
Code: [Select]
CREATE TABLE `myAdmins` (
  `id` int(4) NOT NULL auto_increment,
  `myUserName` varchar(65) NOT NULL default '',
  `myPassword` varchar(65) NOT NULL default '',
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

INSERT INTO myAdmins VALUES("1","abc","123");

This is the login form I use:
Code: [Select]
<?php

include('../include/myConn.php');
include('include/myAdminNav.php');

session_start();
session_destroy();

$message="";

$Login=$_POST['Login'];
if($Login){
$myUserName=$_POST['myUserName'];
$myPassword=$_POST['myPassword'];

$result=mysql_query("select * from myAdmins where myUserName='$myUserName' and myPassword='$myPassword'");
if(mysql_num_rows($result)!='0'){
session_register("myUserName");
header("location:a_Home.php");
exit;
}else{
$message="<div class=\"myAdminLoginError\">Incorrect Username or Password</div>";
}

}
?>

<form id="form1" name="form1" method="post" action="<? echo $PHP_SELF; ?>">

<? echo $message; ?>

Username: <input name="myUserName" type="text" id="myUserName" size="40" />
Password: <input name="myPassword" type="password" id="myPassword" size="40" />

<input name="Login" type="submit" id="Login" value="Login" />

</form>



This is the code on top of each page I password protect:
Code: [Select]
<?
session_start();
if(!session_is_registered(myUserName)){
header("location:Login.php");
}
?>

Works well, but can it be "better"??

And, if I am allowing the admin to update his/her username or password, I do it this way:
Code: [Select]
<?php

include('../include/myConn.php');
include('include/myCheckLogin.php');

if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
$myUserName = mysql_real_escape_string($_POST['myUserName']);
$myPassword = mysql_real_escape_string($_POST['myPassword']);

$sql = "

UPDATE myAdmins
   SET
      myUserName = '$myUserName',
      myPassword = '$myPassword'
  ";
mysql_query($sql) && mysql_affected_rows()

?>

<?php
}

$query=mysql_query("SELECT * FROM myAdmins") or die("Could not get data from db: ".mysql_error());

while($result=mysql_fetch_array($query))

{
  $myUserName=$result['myUserName'];
  $myPassword=$result['myPassword'];
}

?>


<form method="post" action="<?php echo $PHP_SELF;?>">
<input type="hidden" name="POSTBACK" value="EDIT">

Username: <input type="text" size="60" maxlength="60" name="myUserName" value="<?php echo $myUserName; ?>">
Password: <input type="password" size="60" maxlength="60" name="myPassword" value="<?php echo $myPassword; ?>">

<input type="submit" value="Submit" />
         
</form>


Should it be "better" .. ??

I don't seem to understand how to "encrypt" all of this to make it "stronger" ..

Ideas? Improvements?

Hello everyone:

I wanted to see how I can make a simple login page (user name and password) that redirects to a page(s) if the login is correct. Also, I wanted to put protection on the page(s) that will send the user back to the login page if the credentials are nor correct.

I would imagine the username/password would be stored in a database table (Admins), and the correct login info would be stored in a session ..?

I am use to doing this with ASP, but never PHP. I want to make sure I understand how to do this properly and securely so I can use this as a model for other systems.

In ASP I would do a protected page like this:
a_login_check.asp
Code: [Select]
<%
if session("admin_user_name") = "" then
session.abandon
response.redirect "login.asp"
end if
%>

Protected-Page.asp
Code: [Select]
<!-- #include file="include/a_check_login.asp" -->
<html>
...
CONTENT

...
</html>

And of course there is the login page itself ...
(I thought it would be nice to add a "Forgot Password" link on the login page, but if that is too complicated I can do that later .. or is it easy ??)

Anyway, can someone point-out to me how to do this.

I would appreciate it!

I've recently made a profile system for my site, and I'm not sure if it's injectable.

I tried doing

Code: [Select]
REMOVED/index.php?page=profile&player=select * from members where username = srbuckey5266

Does this mean I'm good? It didn't work.

I've been meaning to move on to OOP for a while now that I've grasped the concept of OOP in java quite well and I'm doing good so far in PHP OOP. One question that I have floating around though is: When would protected be of any use? I understand what protected does, it's just I don't see how it could ever stop an error from happening.

Is there an example for how it would be able to stop an interference from occurring?