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Jan 2012

Mask site url using php and htaccess proxy

Now you want to mirror a website of someone else or your own to a new domain. You can simply set it as an addon domain if you have access to original site's hosting control panel. But what if not? If you use htaccess redirects, it promptly redirects to original site. Another quick way is to use iframes. Just put following code in your index.html of new domain.

 <iframe src="http://originalsite.com" height="100%" width="100"></iframe> 
But if visitor clicks a link on the page, it wont update the url on the address bar and user fill feel fishy :) Here is the simple script which makes the masking work. It has two portions a php file and one htaccess file. What php file does is, it opens the original website and grab the content to bump it back to the browser. In the process, it replaces any text with source site url to your new url. So that links on the site and all resource are called from your new domain itself. Smart! isn't it?

# index.php
$host = preg_replace('/^[^\/]+\/\//','',$URL);
$tarray = explode('/',$host);
$host = array_shift($tarray);
$URI = '/' . implode('/',$tarray);
$content = '';
$fp = @fsockopen($host,80,$errno,$errstr,30);
if(!$fp) { echo "Unable to open socked: $errstr ($errno)\n"; exit; }
fwrite($fp,"GET $URI HTTP/1.0\r\n");
fwrite($fp,"Host: $host\r\n");
if( isset($_SERVER["HTTP_USER_AGENT"]) ) { fwrite($fp,'User-Agent: '.$_SERVER["HTTP_USER_AGENT"]."\r\n"); }
fwrite($fp,"Connection: Close\r\n");
while (!feof($fp)) { $content .= fgets($fp, 128); }
if( strpos($content,"\r\n") > 0 ) { $eolchar = "\r\n"; }
else { $eolchar = "\n"; }
$eolpos = strpos($content,"$eolchar$eolchar");
$content = substr($content,($eolpos + strlen("$eolchar$eolchar")));
$content = str_replace($wc_source,$wc_mirror,$content);
// replaces paths with / in the begining without full url. not required unless you are in subfolder
$content = str_replace('href="/','href="http://'.$wc_mirror.'/',$content);
$content = str_replace('src="/','src="http://'.$wc_mirror.'/',$content);

// $fsize = filesize($fullPath);
    $path_parts = pathinfo($fullPath);
    $ext = strtolower($path_parts["extension"]);

    // Determine Content Type
    switch ($ext) {
      case "pdf": $ctype="application/pdf"; break;
      case "exe": $ctype="application/octet-stream"; break;
      case "zip": $ctype="application/zip"; break;
      case "doc": $ctype="application/msword"; break;
      case "xls": $ctype="application/vnd.ms-excel"; break;
      case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
      case "gif": $ctype="image/gif"; break;
      case "png": $ctype="image/png"; break;
      case "jpeg": $ctype="image/jpg"; break;
      case "jpg": $ctype="image/jpg"; break;
      case "js": $ctype="text/javascript"; break;
      case "css": $ctype="text/css"; break;

    header("Pragma: public"); // required
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: private",false); // required for certain browsers
    header("Content-Type: $ctype");
    header("Content-Transfer-Encoding: binary");
//    header("Content-Length: ".$fsize);

if( preg_match('//i',$content) ) { echo( preg_replace('//i',''.$base,$content,1) ); }
else { echo ( str_replace($wc_source,$wc_mirror,preg_replace('/<([a-z])([^>]+)>/i',"<\\1\\2>".$base,$content,1) ));
Now its true that you don't have any other resource / files on the new domain server. Here comes the htaccess to play its role. htaccess sends all requests to index.php with full path so that index.php can return content for corresponding files from Original website.
#htaccess file

    RewriteEngine On
    RewriteBase /
    #Checks to see if the user is attempting to access a valid file,
    #such as an image or css document, if this isn't true it sends the
    #request to index.php
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ /index.php?sql=$1 [L]
Implementation is very straight forward. You just need to put in the source and mirror urls in the php file. Everything works out of the box. Once the files are set with proper urls, when you go to newdomain.com , it will show you content from originalsite.com and all links will word as of newdomain.com/link.html

Posted by Webcastle