nginx的防盗链规则

location ~* \.(gif|jpg|png|jpeg|bmp|swf|mp3|wmv|mp4|rmvb|mov|flv|rar|zip|7z)$ {
    expires     30d;
    valid_referers *.520pub.com *.520pub.net 520pub.com 520pub.net;
    if ($invalid_referer) {
    rewrite ^/ https://520pub.com;
    #return 404;
    }
    }