source: extensions/hotblocker/main.inc.php @ 5004

<?php
/*
Plugin Name: HotBloker
Version: 2.0
Description: this plugin creates .htaccess files in your './galleries/' directory to disallow "hotlink" to your pics, BUT not for your thumbnails (so rss feed still works !!) :
Plugin URI: http://piwigo.org/ext/extension_view.php?eid=291
Author: repie38
Author URI: http://www.pierre-b.com
*/

if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');
DEFINE('HB_VERSION','v2.0');
define('HB_PATH' , PHPWG_PLUGINS_PATH . basename(dirname(__FILE__)) . '/');

class HB
{
        var $etat;
        var $real_cat;
    function init($dir) {
        if (file_exists($dir.'/.htaccess')) {
                $this->etat="on";
                 foreach ($this->real_cat as $cat) {
                        $this->etat = ((file_exists($cat.'/thumbnail/.htaccess')) and ( $this->etat=="on" )) ? "on" : "off" ;
                    }
        }
        else {
                $this->etat="off";
        }
    }

        function hotblock_dir($dir,$tn)
        {
                $htaccess_content ="RewriteEngine on \n";
                $htaccess_content.="RewriteCond %{HTTP_REFERER} !^$ \n";
                $htaccess_content.="RewriteCond %{HTTP_REFERER} !^"."http://".$_SERVER["HTTP_HOST"]."/".".*$ [NC] \n";
                $htaccess_content.="RewriteRule .*\.*$ " . get_absolute_root_url(1) . "plugins/hotbloker/img/bloked.gif [NC] \n";

                if ($tn) {
                        $htaccess_content = "RewriteEngine on \n";
                        $htaccess_content.= "RewriteRule ^.*$ -";
                }
            $file = fopen( $dir.'/.htaccess', 'w' );

            fwrite($file, $htaccess_content );
            fclose( $file );
            if (!$tn) {
                    foreach ($this->real_cat as $cat) {
                        //hotfree_dir($cat);
                        if (file_exists($cat.'/thumbnail')) $this->hotblock_dir($cat.'/thumbnail',1);
                    }
            }
    }

        function hotfree_dir($dir,$tn)
        {
                if (file_exists($dir.'/.htaccess'))
                {
                        unlink($dir.'/.htaccess');
                }
                if (!$tn) {
                        foreach ($this->real_cat as $cat) {
                                $this->hotfree_dir($cat.'/thumbnail',1);
                        }
                }
    }


    function plugin_admin_menu($menu)
    {
        array_push($menu,
            array(
                'NAME' => 'HotBlocker',
                'URL' => get_admin_plugin_menu_link(dirname(__FILE__).'/admin/hb_admin.php')
            )
        );
        return $menu;
    }

    function list_path_of_real_cat()
        {
          $list="";$real_cat=array();
          $query = 'SELECT `id` FROM '.CATEGORIES_TABLE.' WHERE `dir` != \'NULL\';';
          $cat = pwg_query($query);
          if (empty($cat))
            return null;

          while ($row=mysql_fetch_row($cat)) {
                array_push($real_cat,$row[0]);
          }
          $this->real_cat = get_fulldirs($real_cat);
        }
}


$obj = new HB();
add_event_handler('get_admin_plugin_menu_links', array(&$obj, 'plugin_admin_menu') );
set_plugin_data($plugin['id'], $obj)

?>