WordPress/wp-admin/admin.php

<?php
require_once('../wp-config.php');
require_once(ABSPATH . 'wp-includes/wp-l10n.php');

require_once(ABSPATH . 'wp-admin/auth.php');
require(ABSPATH . 'wp-admin/admin-functions.php');

$dogs = $wpdb->get_results("SELECT * FROM $wpdb->categories");
foreach ($dogs as $catt) {
	$cache_categories[$catt->cat_ID] = $catt;
}

get_currentuserinfo();

$posts_per_page = get_settings('posts_per_page');
$what_to_show = get_settings('what_to_show');
$date_format = get_settings('date_format');
$time_format = get_settings('time_format');

function add_magic_quotes($array) {
	foreach ($array as $k => $v) {
		if (is_array($v)) {
			$array[$k] = add_magic_quotes($v);
		} else {
			$array[$k] = addslashes($v);
		}
	}
	return $array;
}

if (!get_magic_quotes_gpc()) {
	$_GET    = add_magic_quotes($_GET);
	$_POST   = add_magic_quotes($_POST);
	$_COOKIE = add_magic_quotes($_COOKIE);
}

$wpvarstoreset = array('profile','redirect','redirect_url','a','popuptitle','popupurl','text', 'trackback', 'pingback');
for ($i=0; $i<count($wpvarstoreset); $i += 1) {
    $wpvar = $wpvarstoreset[$i];
    if (!isset($$wpvar)) {
        if (empty($_POST["$wpvar"])) {
            if (empty($_GET["$wpvar"])) {
                $$wpvar = '';
            } else {
                $$wpvar = $_GET["$wpvar"];
            }
        } else {
            $$wpvar = $_POST["$wpvar"];
        }
    }
}

require(ABSPATH . '/wp-admin/menu.php');

// Handle plugin admin pages.
if (isset($_GET['page'])) {
	$plugin_page = basename($_GET['page']);
	if (! file_exists(ABSPATH . "wp-content/plugins/$plugin_page")) {
		die(sprintf(__('Cannot load %s.'), $plugin_page));
	}

	if (! isset($_GET['noheader'])) {
		require_once(ABSPATH . '/wp-admin/admin-header.php');
	}

	include(ABSPATH . "wp-content/plugins/$plugin_page");

	include(ABSPATH . 'wp-admin/admin-footer.php');	
}

?>