The perfect cracking method to prevent hotlinking of online photo album pictures implemented in PHP_PHP Tutorial

The perfect cracking method to prevent hotlinking of online album pictures implemented in php

This article describes the perfect cracking method to prevent hotlinking of online album pictures implemented in php. Share it with everyone for your reference. The details are as follows:

Internet photo album picture anti-hotlink cracking program - PHP version. This anti-hotlink cracking version can perfectly crack the currently popular: Baidu Photo Album, NetEase Photo Album, 360 I Like and other website pictures. It can also implement simple picture anti-hotlinking. Because of this The class first obtains the remote image, and then sends the image to the client, so it is regarded as transmitting traffic twice. Therefore, space traffic will be wasted. Next, the cache function will be developed, which can save traffic!

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/** * Internet photo album picture anti-leeching cracking program - PHP version * * How to use: * * http://yourdomain/url.php?url=http://hiphotos.baidu.com/verdana/pic/item/baidupicture.jpg&referer= * The url refers to the image URL that needs to be cracked, and the referer is to be compatible with some photo albums that do not require setting the source domain name to be displayed, such as 360 I Like Network, which must be set to empty to browse normally. Therefore, this Referer should be set to 1 * * @author Snow Fox Blog * @version 1.0 * @since July 16, 2012 * @URL http://www.xuehuwang.com */ class Frivoller { /** * HTTP version number (1.0, 1.1), Baidu uses version 1.1 * * @var string */ protected $version; /** * Response data after making HTTP request * * @var string format */ protected $body; /** * Remote URL to be obtained * * @var string format */ protected $link; /** * An array that containing any of the various components of the URL. * * @var array */ protected $components; /** * HOST data during HTTP request * * @var string */ protected $host; /** * The path of required file. * (e.g. '/verdana/abpic/item/mygirl.png') * * @var string */ protected $path; /** * The HTTP referer, extra it from original URL * * @var string */ protected $referer; /** * The HTTP method, 'GET' for default * * @var string */ protected $method = 'GET'; /** * The HTTP port, 80 for default * * @var int */ protected $port = 80; /** * Timeout period on a stream * * @var int */ protected $timeout = 100; /** * The filename of image * * @var string */ protected $filename; /** * The ContentType of image file. * image/jpeg, image/gif, image/png, image * * @var string */ protected $contentType; /** * Frivoller constructor * * @param string $link */ public function __construct($link,$referer='') { $this->referer = $referer; // parse the http link $this->parseLink($link); // begin to fetch the image $stream = pfsockopen($this->host, $this->port, $errno, $errstr, $this->timeout); if (!$stream){ header("Content-Type: $this->contentType;"); echo $this->CurlGet($link); }else{ fwrite($stream, $this->buildHeaders()); $this->body = ""; $img_size = get_headers($link,true); while (!feof($stream)) { $this->body .= fgets($stream, $img_size['Content-Length']); //fwrite($jpg,fread($stream, $img_size['Content-Length'])); } $content = explode("rnrn", $this->body, 2); $this->body = $content[1]; fclose($stream); // send 'ContentType' header for saving this file correctly // 如果不发送CT，则在试图保存图片时，IE7 会发生错误 (800700de) // Flock, Firefox 则没有这个问题，Opera 没有测试 header("Content-Type: $this->contentType;"); header("Cache-Control: max-age=315360000"); echo $this->body; //保存图片 //file_put_contents('hello.jpg', $this->body); } } /** * Compose HTTP request header * * @return string */ private function buildHeaders() { $request = "$this->method $this->path HTTP/1.1rn"; $request .= "Host: $this->hostrn"; $request .= "Accept-Encoding: gzip, deflatern"; $request .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; zh-CN; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1rn"; $request .= "Content-Type: image/jpegrn"; $request .= "Accept: */*rn"; $request .= "Keep-Alive: 300rn"; $request .= "Referer: $this->refererrn"; $request .= "Cache-Control: max-age=315360000rn"; $request .= "Connection: closernrn"; return $request; } /** * Strip initial header and filesize info */ private function extractBody(&$body) { // The status of link if(strpos($body, '200 OK') > 0) { // strip header $endpos = strpos($body, "rnrn"); $body = substr($body, $endpos 4); // strip filesize at nextline $body = substr($body, strpos($body, "rn") 2); } } /** * Extra the http url * * @param $link */ private function parseLink($link) { $this->link = $link; $this->components = parse_url($this->link); $this->host = $this->components['host']; $this->path = $this->components['path']; if(empty($this->referer)){ $this->referer = $this->components['scheme'] . '://' . $this->components['host']; }elseif($this->referer == '1'){ $this->referer = ''; } $this->filename = basename($this->path); // extract the content type $ext = substr(strrchr($this->path, '.'), 1); if ($ext == 'jpg' or $ext == 'jpeg') { $this->contentType = 'image/pjpeg'; } elseif ($ext == 'gif') { $this->contentType = 'image/gif'; } elseif ($ext == 'png') { $this->contentType = 'image/x-png'; } elseif ($ext == 'bmp') { $this->contentType = 'image/bmp'; } else { $this->contentType = 'application/octet-stream'; } } //抓取网页内容 function CurlGet($url){ $url = str_replace('&','&',$url); $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_HEADER, false); curl_setopt($curl, CURLOPT_REFERER,$url); curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; SeaPort/1.2; Windows NT 5.1; SV1; InfoPath.2)"); curl_setopt($curl, CURLOPT_COOKIEJAR, 'cookie.txt'); curl_setopt($curl, CURLOPT_COOKIEFILE, 'cookie.txt'); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 0); $values = curl_exec($curl); curl_close($curl); return $values; } } /** * Obtain root domain name * * @author lonely * @create 2011-3-11 * @version 0.11 * @lastupdate lonely * @package Sl */ class RootDomain{ private static $self; private $domain=null; private $host=null; private $state_domain; private $top_domain; /** * Obtain domain name analysis example * Enter description here ... */ public static function instace(){ if(!self::$self) self::$self=new self(); return self::$self; } public function __construct(){ $this->state_domain=array( 'al','dz','af','ar','ae','aw','om','az','eg','et','ie','ee','ad','ao','ai','ag','at','au','mo','bb','pg','bs','pk','py','ps','bh','pa','br','by','bm', 'bg','mp','bj','be','is','pr','ba','pl','bo','bz','bw','bt','bf','bi','bv','kp','gq','dk','de','tl','tp','tg','dm','do','ru','ec','er','fr','fo','pf','gf','tf','v a','ph','fj','fi','cv','fk','gm','cg','cd','co','cr','gg','gd','gl','ge','cu','gp','gu','gy','kz','ht','kr','nl','an','hm','hn','ki','dj','kg','gn','gw','ca' ,'gh','ga','kh','cz','zw','cm','qa','ky','km','ci','kw','cc','hr','ke','ck','lv','ls','la','lb','lt','lr','ly','li','re','lu','rw','ro','mg','im','mv','mt','mw ','my','ml','mk','mh','mq','yt','mu','mr','us','um','as','vi','mn','ms','bd','pe','fm','mm','md','ma','mc','mz','mx','nr','np','ni','ne',' ng','nu','no','nf','na','za','aq','gs','eu','pw','pn','pt','jp','se','ch','sv','ws','yu','sl','sn','cy','sc','sa','cx','st','sh','kn','lc','sm','pm','vc ','lk','sk','si','sj','sz','sd','sr','sb','so','tj','tw','th','tz','to','tc','tt','tn','tv','tr','tm','tk','wf','vu','gt','ve','bn','ug','ua','uy','uz','es','eh','gr','hk ','sg','nc','nz','hu','sy','jm','am','ac','ye','iq','ir','il','it','in','id','uk','vg','io','jo','vn','zm','je','td','gi','cl','cf','cn','yr' ); $this->top_domain=array('com','arpa','edu','gov','int','mil','net','org','biz','info','pro','name','museum','coop','aero','xxx','idv','m e','mobi'); $this->url=$_SERVER['HTTP_HOST']; } /** * 设置URL * Enter description here ... * @param string $url */ public function setUrl($url=null){ $url=$url?$url:$this->url; if(empty($url))return $this; if(!preg_match("/^http:/is", $url)) $url="http://".$url; $url=parse_url(strtolower($url)); $urlarr=explode(".", $url['host']); $count=count($urlarr); if ($count<=2){ $this->domain=$url['host']; }else if ($count>2){ $last=array_pop($urlarr); $last_1=array_pop($urlarr); if(in_array($last, $this->top_domain)){ $this->domain=$last_1.'.'.$last; $this->host=implode('.', $urlarr); }else if (in_array($last, $this->state_domain)){ $last_2=array_pop($urlarr); if(in_array($last_1, $this->top_domain)){ $this->domain=$last_2.'.'.$last_1.'.'.$last; $this->host=implode('.', $urlarr); }else{ $this->host=implode('.', $urlarr).$last_2; $this->domain=$last_1.'.'.$last; } } } return $this; } /** * Obtain domain name * Enter description here ... */ public function getDomain(){ return $this->domain; } /** * Obtain host * Enter description here ... */ public function getHost(){ return $this->host; } } $referer = array('xuehuwang.com','zangbala.cn','qianzhebaikou.net','sinaapp.com','163.com','sina.com.cn','weibo.com','abc.com'); // Get the url, maybe you should check the given url if (isset($_GET['url']) and $_GET['url'] != '') { //获取来路域名 $site = (isset($_SERVER['HTTP_REFERER']) && !empty($_SERVER['HTTP_REFERER'])) ? $_SERVER['HTTP_REFERER'] : ''; //匹配是否是一个图片链接 if(preg_match('/(http|https|ftp|rtsp|mms):(//|\\){1}((w) [.]){1,}([a-zA-Z]|[0-9]{1,3})(S*/)((S) [.]{1}(gif|jpg|png|bmp))/i',$_GET['url'])){ if(!empty($site)){ $tempu = parse_url($site); $host = $tempu['host']; $root = new RootDomain(); $root->setUrl($site); if(in_array($root->getDomain(),$referer)){ $img_referer = (isset($_GET['referer']) && !empty($_GET['referer']))? trim($_GET['referer']) : ''; new Frivoller($_GET['url'],$img_referer); } }else{ $img_referer = (isset($_GET['referer']) && !empty($_GET['referer']))? trim($_GET['referer']) : ''; new Frivoller($_GET['url'],$img_referer); } } } ?>

　　希望本文所述对大家的php程序设计有所帮助。

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