index.php

<?php
namespace ExternalModules;
require_once dirname(__FILE__) . '/classes/ExternalModules.php';

$id = $_GET['id'];
$page = $_GET['page'];
$pid = @$_GET['pid'];

$prefix = ExternalModules::getPrefixForID($id);
if(empty($prefix)){
	die("A module with id $id could not be found!");
}

$version = ExternalModules::getGlobalSetting($prefix, ExternalModules::KEY_VERSION);
if(empty($version)){
	die("The requested module is currently disabled globally.");
}

$enabled = ExternalModules::getProjectSetting($prefix, $pid, ExternalModules::KEY_ENABLED);
if(!$enabled){
	die("The requested module is currently disabled on this project.");
}

$pagePath = ExternalModules::$MODULES_PATH . ExternalModules::getModuleDirectoryName($prefix, $version) . "/$page.php";
if(!file_exists($pagePath)){
	die("The specified page does not exist for this module.");
}

require_once $pagePath;