Mod Proxy (English version)

[Iltud]

This mod allows phpDid to index sites through proxies.

BUT, there are some constraints :[list=1][*] the database must run at localhost[*] FTP features of phpDig won't work[*] this proxy feature works in exclusive mode : Either you decide to use it, or not. The detection of local sites isn't automatic.[*] perhaps phpDig won't use cookies and authentication on remote sites (to check ?)[/list=1]

The line numbers given here are approximative and based on the version 1.6.2 of phpDig.

In the file /includes/config.php :[list=2][*]Add these 3 lines (anywhere) :

PHP Code:

define('PHPDIG_USE_PROXY',false); // Use proxy-mode ? true or false
define('PHPDIG_PROXY_URL','my.proxy.net'); // Proxy url
define('PHPDIG_PROXY_PORT',3128); // Proxy port 


[/list=2]

In the file /admin/robot_functions.php :
[list=3][*]Replace the line #264 :

PHP Code:

$fp = @fsockopen($host,$port); 


by this section :

PHP Code:

if(PHPDIG_USE_PROXY==true && PHPDIG_PROXY_URL!="")
{
  $fp = @fsockopen(PHPDIG_PROXY_URL,PHPDIG_PROXY_PORT);  
} else {
  $fp = @fsockopen($host,$port);  
} 


[*]At lines #285-287, replace :

PHP Code:

$request =
  "HEAD $path HTTP/1.1\\n"
  ."Host: $host$sport\\n" 


by :

PHP Code:

$request =
  "HEAD ".(PHPDIG_USE_PROXY==true?$url:$path)." HTTP/1.0\\r\\n"
  .(PHPDIG_USE_PROXY==true?"":"Host: $host$sport\\r\\n") 


[*]At lines #352-353, replace :

PHP Code:

$req1 = "HEAD $path HTTP/1.1\\n"
        ."Host: $host$sport\\n" 


by :

PHP Code:

$req1 = "HEAD ".(PHPDIG_USE_PROXY==true?$newpath:$path)." HTTP/1.0\\r\\n"
        .(PHPDIG_USE_PROXY==true?"":"Host: $host$sport\\r\\n") 


[*]Delete the line #630 :

PHP Code:

$file_content = @file($uri); 


[*]At lines #638-641, replace :

PHP Code:

if (is_array($file_content)) {
   fwrite($f_handler,implode('',$file_content));
}
fclose($f_handler); 


by this section :

PHP Code:

if(PHPDIG_USE_PROXY==true && PHPDIG_PROXY_URL!="")
{
  $request = "GET $uri HTTP/1.0\\r\\n"
            ."Accept: */*\\r\\n"
            ."Accept-Charset: iso-8859-1\\r\\n"
            ."Accept-Encoding: identity\\r\\n"
            ."User-Agent: PhpDig/".PHPDIG_VERSION." (PHP; MySql)\\r\\n\\r\\n";
  $fp = fsockopen(PHPDIG_PROXY_URL,PHPDIG_PROXY_PORT);
  if ($fp) {
    fputs($fp,$request);
  
    $c = "\\0";
    while (!feof($fp) && $c != "\\r\\n")
      $c = fgets($fp, 512); // 512 can be changed
  
    while (!feof($fp))
    {
      $answer = fgets($fp,255);  // 255 can be changed
      $answer = str_replace("\\r\\n","\\n",$answer);
      fwrite($f_handler,$answer);
    } 
    fclose($fp);
    fclose($f_handler);
  }
}
else
{
  $file_content = @file($uri);
  if (is_array($file_content)) {
     fwrite($f_handler,implode('',$file_content));
  }
  fclose($f_handler);
} 


[/list=3]

That's all folks :-)
I hope that I didn't forget anything.
Any comments or bugfixes/enhancements are welcome.

[Iltud]

Correction of cariage returns in HTTP/1.0 requests.

( \n --> \r\n )