PHP は、オンライン アルバム内の写真のホットリンクを妨げる問題を解決します

网络相册图片防盗链破解程序 - PHP版 这个防盗链破解版可以完美破解当下比较流行的: 百度相册,网易相册,360我喜欢等网站图片. 还可以实现简单的图片防盗链. 因为这个类是先进行获取远程图片, 然后再把图片发送到客户端,所以,算是进行了两次流量的传送.因此,会浪费空间流量,接下来,会开发缓存功能,这样可以实现节约流量!

<?php   
/**    
 * 网络相册图片防盗链破解程序 - PHP版    
 *     
 * 使用方法：     
 *      
 *      http://yourdomain/url.php?url=http://hiphotos.baidu.com/verdana/pic/item/baidupicture.jpg&referer=    
 *      其中url是指需要破解的图片URL,而referer是为了兼容一些不需要设置来路域名才能显示的相册,例如360我喜欢网,必须设置来路为空才能正常浏览. 所以,此时应该设置referer为1   
 *    
 * @author  雪狐博客    
 * @version 1.0    
 * @since   July 16, 2012   
 * @URL http://www.xuehuwang.com    
 */
            
class Frivoller    
{    
    /**    
     * HTTP 版本号 (1.0, 1.1) , 百度使用的是 version 1.1    
     *    
     * @var string    
     */
    protected $version;    
           
    /**    
     * 进行HTTP请求后响应的数据   
     *     
     * @var 字符串格式    
     */
    protected $body;    
                
    /**    
     * 需要获取的远程URL   
     *     
     * @var 字符串格式    
     */
    protected $link;    
           
    /**    
     * An array that containing any of the various components of the URL.     
     *    
     * @var array    
     */
    protected $components;    
           
    /**    
     * HTTP请求时HOST数据   
     *    
     * @var 字符串    
     */
    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("\r\n\r\n", $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/1.1\r\n";    
        $request .= "Host: $this->host\r\n";    
        $request .= "Accept-Encoding: gzip, deflate\r\n";   
        $request .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; zh-CN; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1\r\n";   
        $request .= "Content-Type: image/jpeg\r\n";    
        $request .= "Accept: */*\r\n";    
        $request .= "Keep-Alive: 300\r\n";    
        $request .= "Referer: $this->referer\r\n";    
        $request .= "Cache-Control: max-age=315360000\r\n";    
        $request .= "Connection: close\r\n\r\n";    
        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, "\r\n\r\n");    
            $body = substr($body, $endpos + 4);    
           
            // strip filesize at nextline    
            $body = substr($body, strpos($body, "\r\n") + 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;    
    }    
           
}    
/**   
 * 取得根域名   
 *   
 * @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 $top_domain;   
    /**   
     * 取得域名分析实例   
     * Enter description here ...   
     */
    public static function instace(){   
        if(!self::$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','va','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','me','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;   
    }   
    /**   
     * 取得域名   
     * Enter description here ...   
     */
    public function getDomain(){   
        return $this->domain;   
    }   
    /**   
     * 取得主机   
     * 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);    
        }   
    }   
}    
?>