How to prevent direct linking?

bidawinner · Feb 17, 2003

On Chessmasters.US I have people by passing my main page and simply bookmarking my entry page to start playing chess.

http://www.chessmasters.us/chessgame/index.php

anyway I can prevent that? make them have to go to the home page to before they can sign into play ?

Whois-Search · Feb 17, 2003

Have a login link on the front page which is a pop up password box

SicChild · Feb 17, 2003

check the HTTP_REFERER using php.

insomnia · Feb 17, 2003

Just put the login on the main page?

bidawinner · Feb 17, 2003

Originally posted by Whois-Search
Have a login link on the front page which is a pop up password box

bear with who-is..

cant they still just bookmark http://www.chessmasters.us/chessgame/index.php ?

I was thinking maybe a redirect..lie if they just bookmarked and clicked on http://www.chessmasters.us/chessgame/index.php then it would redirect them to the front page.. but then that would create a loop..just need a way out of the loop then?

Lats · Feb 17, 2003

Put this on the chessgame/index.php page...

Code:

<?php 

if ($HTTP_REFERER != "http://www.chessmasters.us/chessgame/index.php")

header("Location: [url]http://www.chessmasters.us/chessgame/index.php[/url]");

// echo $HTTP_REFERER;
// echo "redirecting...";

?>

<html>
<head>
<title>Play Chess</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body bgcolor="#FFFFFF" text="#000000">

<p>Redirection Testing:</p>
</body>
</html>

bidawinner · Feb 17, 2003

Originally posted by SicChild
check the HTTP_REFERER using php.

Thakns sirchild..but I'm not that technicaly savy.. not quite sure what that means..

I'll do a search and see if I cant figure it out though..apprciate the help..

bidawinner · Feb 17, 2003

Lats to the rescue..some kind of G angel ? lol..

So thisis the http_referer Sirchild was talking about..

Thahkis Guy's I'l give it a try and also do a google search on http_REFERER code so I understand it..

I'll let you know how it goes...

Originally posted by Lats
Put this on the chessgame/index.php page...

Code:

<?php if ($HTTP_REFERER != "http://www.chessmasters.us/chessgame/index.php") header("Location: [url]http://www.chessmasters.us/chessgame/index.php[/url]"); // echo $HTTP_REFERER; // echo "redirecting..."; ?> <html> <head> <title>Play Chess</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body bgcolor="#FFFFFF" text="#000000"> <p>Redirection Testing:</p> </body> </html>

SicChild · Feb 18, 2003

well here's my version of the code:

Code:

<?php
if(!strstr($_SERVER['HTTP_REFERER'],"chessmasters.us")) {
          header("Location: [url]http://www.chessmasters.us[/url]");
}
?>

Just put that at the top of your /chessgame/index.php page. HTTP_REFERER means 'the page that the client was at before reaching the desitation page. So what that code does it check if the last page visited by the client contained "chessmasters.us" in the URL, and if not, it redirects them to your homepage. Try it out.

bidawinner · Feb 18, 2003

Couldnt get either one to work..
got this error on your lats..

Warning: Cannot modify header information - headers already sent by (output started at /home/chessmas/public_html/chessgame/index.php:18) in /home/chessmas/public_html/chessgame/index.php on line 32

I havent a clue what I am doing ..BUT..I did fiqure out something that I didnt know before..

Lats remember when you installed this script for me..I dont have any of those php files locally ..all on my server..

But when I went to add that http-refercode..

Iwent to this page
http://www.chessmasters.us/chessgame/index.php
and then simply used my front page import and only then did I realze that I could edit those type php page's just like any html page.. I thought all PHP pages were generated at the server end and I didnt have control..

I know it's just child's play to you guy's ...but to me it was a litlle discovery..

anyways , the entire problem was that if all the players skip right to this blank sign in page no way will I ever get any revenues fromselling chess sets, posters etc.. ..

Now that I understand I can edit these pages just like any other page I can simply start adding affiliate stuff on these pages.. "duh" .. and I dont need to force them to go to the home page first..

although it would be nice to understand what I am doing wrong with the http:refer thingy ..

Thanks Guys..

Lats · Feb 18, 2003

That error comes up because you have something else before the header information - take a close look, it might even be a space.

I'd recommend downloading those files to your local drive via FTP - you can then edit 'properly' in a text editor.

How to prevent direct linking?

bidawinner

Level 9

Whois-Search

Level 9

SicChild

Level 1

insomnia

DNF Regular

bidawinner

Level 9

Lats

Level 5

bidawinner

Level 9

bidawinner

Level 9

SicChild

Level 1

bidawinner

Level 9

Lats

Level 5

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