phpproxy/parse.php at master · YetOpen/phpproxy · GitHub

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<?php

// otherwise preg_replace_callback couldn't handle very large strings -- increase the default by 100
ini_set('pcre.backtrack_limit', 1000000 * 100);

functioncss_url($matches){
$url = trim($matches[1]);

if(stripos($url, 'data:') === 0){
return$matches[0];
	}

return'url(\''.proxify_url($url).'\')';
}

functionproxify_css($str){
$str = preg_replace_callback('@url\s*\((?:\'|"|)(.*?)(?:\'|"|)\)@im', 'css_url', $str);

return$str;
}

functionhtml_href($matches){
return'href="'.proxify_url($matches[1]).'"';
}

functionhtml_src($matches){

if(stripos(trim($matches[1]), 'data:') === 0){
return$matches[0];
	}

return'src="'.proxify_url($matches[1]).'"';
}

functionhtml_action($matches){

$new_action = proxify_url($matches[1]);
$result = str_replace($matches[1], $new_action, $matches[0]);

// change form method to POST!!!
$result = str_replace("<form", '<form method="POST"', $result);
return$result;
}


functionproxify_html($str){

$str = proxify_css($str);

// html
$str = preg_replace_callback('@href=["|\'](.+?)["|\']@im', 'html_href', $str);
$str = preg_replace_callback('@src=["|\'](.+?)["|\']@i', 'html_src', $str);
$str = preg_replace_callback('@<form[^>]*action=["|\'](.+?)["|\'][^>]*>@i', 'html_action', $str);

$str = preg_replace_callback('@<meta\s*http-equiv="refresh"\s*content="[^;]*;\s*url=(.*?)"@i', function($matches){
returnstr_replace($matches[1], proxify_url($matches[1]), $matches[0]);
	}, $str);

return$str;
}


// video player to be used
define('PLAYER_URL', '//www.php-proxy.com/assets/flowplayer-latest.swf');

functionvid_player($url, $width, $height){

$video_url = proxify_url($url); // proxify!
$video_url = rawurlencode($video_url); // encode before embedding it into player's parameters

$html = '<object id="flowplayer" width="'.$width.'" height="'.$height.'" data="'.PLAYER_URL.'" type="application/x-shockwave-flash">

 <param name="allowfullscreen" value="true" />
 <param name="wmode" value="transparent" />
 <param name="flashvars" value=\'config={"clip":"'.$video_url.'", "plugins": {"controls": {"autoHide" : false} }}\' />

 </object>';

return$html;
}


functionreplace_title($input, $replace = ''){
returnpreg_replace('@<title>.*?<\/title>@s', '<title>'.$replace.'</title>', $input);
}

functionremove_script($input){
$result = preg_replace("@<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>@is", '', $input);
$result = preg_replace("@<\s*script\s*>(.*?)<\s*/\s*script\s*>@is", '', $result);

return$result;
}

functionchop_sub($host){

$parts = explode(".", $host);

if(count($parts) > 2){
 unset($parts[0]);
returnimplode(".", $parts);
	}

returnfalse;
}


// will only be called on html, js, css, and other text-like pages
functionparse($url, $output, $type){

// let's measure the time it takes to proxify and regex replace some file
$start = time_ms();


// check something.www.youtube.com then www.youtube.com then youtube.com...
$h = URL_HOST;

do {

$class_name = str_replace(".", "_", $h);
$file = $class_name.'.php';

if(file_exists('parser/'.$file)){

// load that parser!
include('parser/'.$file);

if(class_exists($class_name, true)){


$parser = new$class_name;

$output = $parser->parse($output, $url, $type);


 }

break;
 } else {
$h = chop_sub($h);
 }

	} while ($h);


// remove all iframe
$output = preg_replace('@<iframe.*?>.*?<\/iframe>@s', '', $output);


global$config;

if($type == 'html'){

if($config['remove_script']){
$output = remove_script($output);
 }

$output = proxify_html($output);
	}

if($config['replace_title']){
$output = replace_title($output, $config['replace_title']);
	}

if($type == 'css'){
$output = proxify_css($output);
	}

$time = time_ms() - $start;
$output .= '<!-- parsed in '.$time.' milliseconds using proxy! -->';

return$output;
}


?>