PHP Classes

File: proxy_class.php

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  Classes of Andrey Nikishaev  >  Little PHP Proxy  >  proxy_class.php  >  Download  
File: proxy_class.php
Role: Class source
Content type: text/plain
Description: main class
Class: Little PHP Proxy
Show remote pages as if they from the current site
Author: By
Last change: fix error with empty page
Date: 14 years ago
Size: 8,193 bytes
 

Contents

Class file image Download
<?php
/*

  Little PHP Proxy V1.071

*/
class little_php_proxy {
       var
$DOMAIN;
       var
$POSTURL;
       var
$PURL=array();
       var
$RESPONSE=array();

       public function
__construct() {
            
define(HOST,$_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF']);
       }

       public function
close() {
              
unlink(session_id());session_destroy();header('Location: /');
       }

       public function
query($U,$POST,$GET,$FILES,$COOKIE='') {


            if(
count($POST)) {

                foreach(
$POST as $key => $value) {
                if(
$key!='u' && $key!='c') $POSTVARS.=$key."=".$value."&";
                }
                if(
$POSTVARS) $posted=1;
            }

            if(
count($FILES)) {
               
$files=1;
                foreach(
$FILES as $key => $value) {
               
$POSTVARS.=$key."=@".$value['tmp_name']."&";
                }
            }

           
$POSTVARS=$POSTVARS?substr($POSTVARS,0,-1):'';

           
$U=urldecode($U);
            if(!
eregi('[.]+',$U)) $U=base64_decode($U);
            if(!
eregi('^(http|ftp|https)',$U)) $U='http://'.$U;
           
$this->POSTURL=$U;
            foreach(
$GET as $k=>$v) {
            if(
$k!='u' && $k!='c') $this->POSTURL.='&'.$k.'='.$v;
            }
            if(!
eregi('[\-_a-z0-9]+\.[\-_a-z0-9]+',$U)) die('<h1 style="font-family:Arial">Url <span style="color:red">'.$U.'</span> is not valid.</span>');
        
           
$this->PURL=parse_url($U);
           
$this->DOMAIN=$this->PURL['host'].$this->PURL['path'];
            if(
ereg('.',$this->PURL['path'])) $this->DOMAIN=ereg_replace('/[^\/]*$','',$this->DOMAIN);
            
define(PHOST,$this->PURL['host']);
            
define(DOMAIN,$this->DOMAIN);
            
$ch = curl_init($this->POSTURL);
             if(
$posted) curl_setopt($ch, CURLOPT_POST, 0);
                          
curl_setopt($ch, CURLOPT_VERBOSE, 0);
                        
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['user-agent']);
             if(
$posted) curl_setopt($ch, CURLOPT_POSTFIELDS, $POSTVARS);
             if(
$files) curl_setopt($ch, CURLOPT_UPLOAD, 1);
                        
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
                        
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
                        
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
                        
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
                        
curl_setopt($ch, CURLOPT_REFERER, "http://".$this->DOMAIN);
                        
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 0);
                        
curl_setopt($ch, CURLOPT_AUTOREFERER, 0);
                        
curl_setopt($ch, CURLOPT_COOKIEJAR, 'ses_'.session_id());
                        
curl_setopt($ch, CURLOPT_COOKIEFILE, 'ses_'.session_id());
                         if(
strlen($COOKIE)>0) curl_setopt($ch, CURLOPT_COOKIE, $COOKIE);
                        
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                        
curl_setopt($ch, CURLOPT_FAILONERROR, 1);


             if(!
$this->CONTENT = curl_exec($ch)) die('<h1 style="font-family:Arial">Site not exists or it has to many redirects.</span>');
          
            
$this->RESPONSE=curl_getinfo($ch);
            
curl_close($ch);
       }

       public function
getPage() {
                if(
ereg('html',$this->RESPONSE['content_type'])) {
                    
$this->get_html();
                    
$this->get_css();
             } elseif (
ereg('image',$this->RESPONSE['content_type'])){
                   
$this->get_image();
             } elseif (
ereg('javascript',$this->RESPONSE['content_type'])){
                   
$this->get_javascript();
             } elseif (
ereg('css',$this->RESPONSE['content_type'])){
                   
$this->get_css();
             } else {
                   
$this->get_file();
             }
            
header("Content-Type: ".$this->RESPONSE['content_type']);
             if(
eregi('image/([a-z]+)',$this->RESPONSE['content_type'],$type)) {
                 
$newImg = imagecreatefromstring($this->CONTENT);
                 if(
$type[1]="jpeg")imagejpeg($newImg,'',100);
                 if(
$type[1]="png")imagegif($newImg,'',100);
                 if(
$type[1]="gif")imagepng($newImg,'',100);
             } else {
                 echo
$this->CONTENT;
             }
       }

       public function
get_file() {

       }

       public function
get_image() {

       }

       public function
get_javascript() {
           
$patern=array(
           
'/([\"]+)([^\"\s]*)([\"]+)/i',
           
'/([\']+)([^\'\s]*)([\']+)/i'
            
);
            function
replace_js($m) {
                 
$d='';
                  if(
eregi('^\/',$m[2])) {
                         
$d='http://'.PHOST;$ok=1;
                  } else {
                            if(!
eregi('^(htt|ftp)',$m[2]) && eregi('/',$m[2])) {$d='http://'.DOMAIN.'/';$ok=1;}
                  }
                  if(
$ok) {
                          return
$m[1].'http://'.HOST.'?u='.base64_encode($d.$m[2]).$m[1];
                  } else {
                        return
$m[1].$m[2].$m[1];
                  }

             }
           
$this->CONTENT=preg_replace_callback($patern,"replace_js",$this->CONTENT);
       }

       public function
get_css() {
             
$patern=array(
             
'/url\([\s]*[\'\"\`]?([^\)\s\'\"\`]+)[\'\"\`]?[\s]*\)/i'
             
);
              function
replace_css($m) {
                 
$d='';
                  if(
eregi('^\/',$m[1])) {
                         
$d='http://'.PHOST;$ok=1;
                  } else {
                            if(!
eregi('^(htt|ftp)',$m[1])) {
                           
$d='http://'.DOMAIN.'/';$ok=1;
                        } else {
                           
$ok=1;
                        }
                  }

              if(
$ok) {
                      return
'url(http://'.HOST.'?u='.base64_encode($d.$m[1]).')';
              }


             }
           
$this->CONTENT=preg_replace_callback($patern,"replace_css",$this->CONTENT);
       }

       public function
get_html() {
              
$patern=array(
           
'/[\s]+(src|href|url|location|background|action)[\s]*=[\s]*([\'\"\`])?[\s]*([^\'\"\`\s>]+)([\'\"\`>])?/i',
           
'/([\"]+)(\/[^\"\s]*)([\"]+)/i',
           
'/([\']+)(\/[^\'\s]*)([\']+)/i'
            
);
             function
replace_html($m) {
             
$d='';
            if(
$m[1]=='"' || $m[1]=="'") {
            if(
eregi('^\/',$m[2])) {
                 
$d='http://'.PHOST;$ok=1;
              } else {
                    if(!
eregi('^(htt|ftp)',$m[2]) && eregi('/',$m[2])) {$d='http://'.DOMAIN.'/';$ok=1;}
              }
             if(
$ok) {return $m[1].'http://'.HOST.'?u='.base64_encode($d.$m[2]).$m[1];}
                else {
                    return
$m[1].$m[2].$m[1];
            }

            } else {
              if(
$m[4]=='>') $e=">";
              if(
eregi('^\/',$m[3])) {
                 
$d='http://'.PHOST;
             } else {
                    if(!
eregi('^(htt|ftp)',$m[3])) $d='http://'.DOMAIN.'/';
              }
            if(!
ereg('^java',$m[3])) {
                    return
' '.$m[1].'="http://'.HOST.'?u='.base64_encode($d.$m[3]).'"'.$e;
            } else {
                    return
' '.$m[1].'="'.$m[3].'"';
            }
            }
             }
            
$this->CONTENT=preg_replace_callback($patern,'replace_html',$this->CONTENT);
       }
}

?>