php内网探测脚本&简单代理访问

<?php $url = isset($_REQUEST['u'])?$_REQUEST['u']:null; $ip = isset($_REQUEST['i'])?$_REQUEST['i']:null;  if($url != null){     $host = getHost($url);     echo getCss($host,getHtmlContext($url)); }else if($ip != null){     $useIP = substr($ip,0,strripos($ip,".") + 1);   ob_start();     for($i=0;$i<256;$i++){       $url = "http://".$useIP.$i;     $html = getHtmlContext($url);     $title = getTitle(html);     $serverType = getHeader("Server");     $status = $html ? "Success": "Fail";     if($html){        echo $url."  >>  ".$title.">>".$serverType." >>".$status."<br/>";     }         @ob_flush();         flush();   }   ob_end_clean(); } function getHtmlContext($url){     $ch = curl_init();     curl_setopt($ch, CURLOPT_URL, $url);     curl_setopt($ch, CURLOPT_HEADER, TRUE);    //表示需要response header     curl_setopt($ch, CURLOPT_NOBODY, FALSE); //表示需要response body     curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);     curl_setopt($ch, CURLOPT_TIMEOUT, 120);     $result = curl_exec($ch);   global $header;   if($result){        $headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);        $header = explode("/r/n",substr($result, 0, $headerSize));        $body = substr($result, $headerSize);   }     if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == '200') {         return $body;     }     if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == '302') {     $location = getHeader("Location");     if(strpos(getHeader("Location"),'http://') == false){       $location = getHost($url).$location;     }         return getHtmlContext($location);     }     return NULL; } function getHeader($name){   global $header;   foreach ($header as $loop) {      if(strpos($loop,$name) !== false){        return trim(substr($loop,strlen($name)+2));      }   } } function getTitle($html){     preg_match("/<title>(.*?)<//title>/i",$html, $matches);   return $matches[1]; } function getHost($url){     preg_match("/^(http:////)?([^//]+)/i",$url, $matches);     return $matches[0]; } function getCss($host,$html){     preg_match_all("/<link[/s/S]*?href=['/"](.*?[.]css.*?)[/"'][/s/S]*?>/i",$html, $matches);   //print_r($matches);     foreach($matches[1] as $v){     $cssurl = $v;         if(strpos($v,'http://') == false){       $cssurl = $host."/".$v;     }     $csshtml = "<style>".file_get_contents($cssurl)."</style>";     $html .= $csshtml;   }   return $html; } ?>