Convert hex encoded URL PDF Print E-mail
Written by Carl Friis-Hansen   
Wednesday, 17 February 2010 01:36

 

Hi there.  Sometimes website owner wants to hide the URL to a certain video or sound file.  One trick try use is to write the URL as a whole line of ASCII numbers in HEX notation like \u0068\u0074\u0074\u0070\u003a\u002f \u002f instead of http://

Both strings do the same thing, but in case you want to download the video or whatever with wget, vlc or another application, then a convertion might be needed.  This is where this tiny PHP command line program comes into play.

 

The syntax:

converturl

converturl 
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#! /usr/bin/php
<?php
 
 
 
 $surl = "\u0068\u0074\u0074\u0070\u003a\u002f\u002f\u0077\u0077\u0077";
 
 // Will result in: "http://www"
 
 $change = false;
 
 if( $argc == 2 )
 {
   $surl = $argv[1];
 }
 
 for( $x=0; $x<256; $x++ )
 {
   $r = chr( $x );
   $s = "\u00".bin2hex( chr( $x ) );
   $surl = str_replace  ( $s, $r, $surl );
   $s = "\u00".strtoupper( bin2hex( chr( $x ) ) );
   $surl = str_replace  ( $s, $r, $surl );
 };
 
 print "\"".$surl."\"\n";
 
 
 
?>

Last Updated on Wednesday, 17 February 2010 02:04
 

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