source: extensions/rv_akismet/main.inc.php @ 14518

<?php /*
Plugin Name: RV Akismet
Version: 2.4.a
Description: Uses Akismet online service to check comments agains spam
Plugin URI: http://piwigo.org/ext/extension_view.php?eid=192
Author: rvelices
Author URI: http://www.modusoptimus.com
*/

define('AKIS_DIR' , basename(dirname(__FILE__)));
define('AKIS_PATH' , PHPWG_PLUGINS_PATH . AKIS_DIR . '/');

add_event_handler('user_comment_check', 'akismet_user_comment_check_wrapper', EVENT_HANDLER_PRIORITY_NEUTRAL+10, 2);
add_event_handler('loc_begin_page_tail', 'akismet_page_tail' );


add_event_handler('get_admin_plugin_menu_links', 'akismet_plugin_admin_menu' );
add_event_handler('init', 'akismet_init' );


function akismet_plugin_admin_menu($menu)
{
        global $page,$conf;
        if ( empty($conf['akismet_api_key']) and in_array($page['page'], array('intro','plugins_list')) )
        {
                load_language('plugin.lang', AKIS_PATH);
                $page['errors'][] = l10n('You need to define the Akismet api key');
        }
        $admin_url = get_admin_plugin_menu_link(dirname(__FILE__).'/admin.php');
        array_push($menu,
                        array(
                                'NAME' => 'Akismet',
                                'URL' => $admin_url
                        )
                );
        return $menu;
}


function akismet_user_comment_check_wrapper($action, $comment)
{
        include_once( dirname(__FILE__).'/check.inc.php' );
        $action = akismet_user_comment_check($action, $comment);
        if (!isset($_SESSION['csi']) && isset($_POST['url']) && strlen($_POST['url']) )
        {
                $action = 'reject';
                $_POST['cr'][] = 'csi url';
        }
        return $action;
}

function akismet_init()
{
        global $template;
        $template->smarty->register_prefilter('akismet_prefilter_comment_form');
}

function akismet_prefilter_comment_form($source, $smarty)
{
        if ( ($pos=strpos($source, '<textarea'))!==false
                && ($pos2=strpos($source, 'comment', $pos))!==false
                && $pos2-$pos <300)
        {
                $source= substr_replace($source, '{html_style}#urlid{ldelim}display:none}{/html_style}<input type="text" name="url" id="urlid">', $pos,0);
        }
        return $source;
}

function akismet_page_tail()
{
        global $template, $conf;
        if (!isset($_SESSION['csi']) && strpos($_SERVER['HTTP_USER_AGENT'],'bot')===false)
        {
                $src = get_root_url().'plugins/'.AKIS_DIR.'/csi.php';
                $template->append( 'footer_elements', '<img src="'.$src.'" width=0 height=0>');
        }
}

?>