root/tags/2.0.9/wp-admin/list-manipulation.php

<?php
require_once('../wp-config.php');
require_once('admin-functions.php');
require_once('admin-db.php');
header("Content-type: text/plain", true);

if ( !is_user_logged_in() )
    die('-1');
if ( !check_ajax_referer() )
    die('-1');

function grab_results() {
    global $ajax_results;
    $ajax_results = func_get_arg(0);
}

function get_out_now() { exit; }
add_action('shutdown', 'get_out_now', -1);

switch ( $_POST['action'] ) :
case 'delete-link' :
    $id = (int) $_POST['id'];
    if ( !current_user_can('manage_links') )
        die ('-1');

    if ( wp_delete_link($id) ) 
        die('1');
    else    die('0');
    break;
case 'delete-post' :
case 'delete-page' :
    $id = (int) $_POST['id'];
    if ( !current_user_can('edit_post', $id) )    {
        die('-1');
    }

    if ( wp_delete_post($id) ) {
        die('1');
    } else    die('0');
    break;
case 'delete-cat' :
    if ( !current_user_can('manage_categories') )
        die ('-1');

    $id = (int) $_POST['id'];
    $cat_name = get_catname($cat_ID);

    if ( wp_delete_category($id) )
        die('1');
    else    die('0');
    break;
case 'delete-comment' :
    $id = (int) $_POST['id'];

    if ( !$comment = get_comment($id) )
        die('0');
    if ( !current_user_can('edit_post', $comment->comment_post_ID) )    
        die('-1');

    if ( wp_delete_comment($comment->comment_ID) ) {
        die('1');
    } else {
        die('0');
    }
    break;
case 'delete-link-category' :
    $id = (int) $_POST['id'];
    if ( 1 == $id )
        die('0');
    if ( !current_user_can('manage_links') )
        die('-1');

    if ( $wpdb->query("DELETE FROM $wpdb->linkcategories WHERE cat_id='$id'") ) {
        $wpdb->query("UPDATE $wpdb->links SET link_category=1 WHERE link_category='$id'");
        die('1');
    } else {
        die('0');
    }
    break;
endswitch;        
?>