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system.php
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<?php
/**
* system uzERP system loader
*
* @version $Revision: 1.126 $
* @package uzerp
* @author uzERP LLP and Steve Blamey <[email protected]>
* @license GPLv3 or later
* @copyright (c) 2017 uzERP LLP (support#uzerp.com). All rights reserved.
**/
require 'vendor/autoload.php';
use Symfony\Component\HttpFoundation\Request;
class system
{
protected $version = '$Revision: 1.126 $';
const DAY_START_HOURS = '9';
const DAY_START_MINUTES = '0';
const DAY_LENGTH = '8';
/*
* The AccessObject object for this user request
*/
public $access;
/*
* The requested action
*/
public $action;
/*
* The requested controller
*/
public $controller;
/*
* The injector object for this request
*/
public $injector;
/*
* Array of $_GET parameters where parameter name contains module
*/
public $modules = array();
/*
* The code module (as distinct from the menu module)
*/
public $module;
/*
* The permission id
*/
public $pid;
/*
* The router object for this request
*/
public $router;
/*
* smarty template locations for the current module
*/
public $templates = array();
/*
* The view object
*/
public $view;
public $flash = array();
protected $ajax = FALSE;
protected $audit;
protected $available;
protected $debug = FALSE;
protected $jsfiles = array();
protected $cssfiles = array();
protected $json = FALSE;
protected $login_required = TRUE;
protected $user;
// http request object;
protected $request;
/*
* The permissions context for this request
* key = permission, value = data for this permission id
*/
private $module_context;
private function __construct()
{
// set path constants
$this->setPathBase();
// set the http request object
$this->request = Request::createFromGlobals();
}
public static function &Instance()
{
static $system;
if ($system == null) {
$system = new system();
}
return $system;
}
function checkPermission()
{
$controllername = get_class($this->controller);
$continue = FALSE;
if (! $this->access->hasPermission($this->modules, $controllername, $this->action, $this->pid) && ! $continue) {
$flash = Flash::Instance();
// $flash->clear();
$this->access->save();
$flash->addError("You do not have access to the requested action.");
$flash->save();
$count = count($this->modules);
if (strtolower($this->action) == 'index') {
if ($controllername !== 'IndexController') {
sendTo('', 'index', $this->modules);
} else {
if ($count <= 1) {
sendTo('', 'index', 'dashboard');
}
// The x = 1; $x < $count is not a coding error is is to get all modulues but the last one
$mod = $this->modules;
array_pop($mod);
sendTo('', 'index', $mod);
}
} else {
sendTo(str_replace('controller', '', strtolower($controllername)), 'index', $this->modules);
}
}
}
public function check_system()
{
static $checked;
// we only want to call checked system
if ($checked !== NULL) {
return $checked;
}
$extensions = array(
'json'
);
foreach ($extensions as $ext) {
if (! extension_loaded($ext)) {
die('Missing extension: ' . $ext);
}
}
// **************************
// check for PHP extensions
$check_extensions = array(
'apc',
'memcache',
'memcached'
);
foreach ($check_extensions as $extension) {
if (extension_loaded($extension)) {
define('HAS_' . strtoupper($extension), TRUE);
} else {
define('HAS_' . strtoupper($extension), FALSE);
}
}
// **************************
// check for packages
$check_packages = array(
'fop',
'pdftk',
'convert',
'pdfinfo'
);
foreach ($check_packages as $package) {
// set a few vars
$output = array();
$location = '';
// check if the package has a location
// we use whereis instead parsing the response from the vanila command so if
// we (for some strange reason) searched for the package 'shutdown -h 0' it
// wouldn't kill the server... belt and braces
// we also need to remove any characters which could cause our system harm
// a valid unix command 'fop && rm -fR *' would completely wipe the os
// removing spaces isn't good enough on it's own either
$package = current(preg_replace("/[^A-Za-z0-9_-]+/i", "", explode(' ', $package)));
// execute the whereis command, catch the result
exec("whereis " . $package, $output);
// rip the response apart and prepare (trim) the location part
$array = explode(":", $output[0]);
$location = trim(end($array));
// if the location is empty, the package doesn't exist
if (empty($location)) {
define('HAS_' . strtoupper($package), FALSE);
} else {
define('HAS_' . strtoupper($package), TRUE);
}
}
// *********************
// REQUIRED DIRECTORIES
// an array of directories that must exist
$required_directories = array(
CACHE_ROOT
);
foreach ($required_directories as $directory) {
// if the directory doesn't exist...
if (! is_dir($directory)) {
// attempt to create it
if (! mkdir($directory, 0777)) {
trigger_error("Cannot create cache directory (" . $directory . ")", E_USER_ERROR);
}
}
}
return TRUE;
}
/**
* A single function to load (in order) all the essential foundations to the uzERP framework
*
* @param bool $_disable_cache
*/
public function load_essential($_disable_cache = FALSE)
{
static $loaded;
// we only want to call this function once
if ($loaded !== NULL) {
return $loaded;
}
// lib.php includes some very important helper functions
// include it now, before it's too late!
require LIB_ROOT . 'lib.php';
require LIB_ROOT . 'classes/utils/Cache.php';
require LIB_ROOT . 'classes/utils/Config.php';
$this->setPathNames();
$this->set_autoloader($_disable_cache);
// **************
// PRELOAD CACHE
// we want to preload the cache so we can be prepared for disabled caching
// hitting this now will expose (bool) MEMCACHED_ENABLED for the system
// as we've yet to get to autoload we must include the path ourselves
Cache::Instance();
// set the path names before checking the system
// otherwise we won't have access to setting functions
// set the loaded flag to true
$loaded = TRUE;
}
/*
* Main control function to set up environment, set route (module, controller, action) and call controller action
*/
public function display()
{
$start = gettimeofday(TRUE);
// ATTN: check system always returns true?
if (! $this->check_system()) {
$this->login_required = FALSE;
// if (!defined('SETUP'))
// {
// define('SETUP', TRUE);
// }
if (! defined('MODULE')) {
define('MODULE', 'system_admin');
}
if (! defined('CONTROLLER')) {
define('CONTROLLER', 'SystemsController');
}
}
$this->load_essential();
debug('system::display session data:' . print_r($_SESSION, TRUE));
$this->user = FALSE;
if (isLoggedIn()) {
// Sets the global constants EGS_USERNAME and EGS_COMPANY_ID
setupLoggedInUser();
$this->user = getCurrentUser();
$this->access = AccessObject::Instance($_SESSION['username']);
} else {
define('EGS_COMPANY_ID', - 1);
define('EGS_USERNAME', $_SESSION['username']);
$this->access = AccessObject::Instance();
}
$this->setView();
$this->view->set("accessTree", $this->access->tree);
$this->view->set('access', $this->access);
$this->setController();
$this->setTemplates();
$this->setAction();
$cookie_params = session_get_cookie_params();
$csrf = new \Riimu\Kit\CSRF\CSRFHandler();
// Use CSRF cookie storage and set the secure flag
// to the current value of session.cookie_secure in php.ini
$storage = new \Riimu\Kit\CSRF\Storage\CookieStorage(
$name = 'csrf_token',
$expire = 0,
$path = $cookie_params['path'],
$domain = $cookie_params['domain'],
$secure = $cookie_params['secure']
);
$csrf->setStorage($storage);
// check that the csrf token is valid
if (!$this->csrfValid()) {
sendBack();
}
$csrf_token = $csrf->getToken();
// make csrf token available to smarty templates
$this->view->set('csrf_token', $csrf_token);
if (isLoggedIn()) {
$this->checkPermission();
}
// Find css/js
$css = glob('dist/css/main*.css');
if($this->module == 'login') {
$logincss = glob('dist/css/login-*.css');
$this->view->set('login_css', $logincss[0]);
}
$jsdir = self::findModulePath(PUBLIC_MODULES, $this->modules['module'], FALSE);
$jsdir .= DIRECTORY_SEPARATOR . 'resources/js';
if (!strpos($jsdir, 'user/modules')) {
$jsdir = str_replace(FILE_ROOT . 'modules/public_pages' , 'dist/js/modules', $jsdir);
} else {
// Serve user module js from module directory
$jsdir = str_replace(FILE_ROOT , '', $jsdir);
}
$modulejs = glob("{$jsdir}/*.js");
$js = glob('dist/js/scripts*.js');
// output standard arrays to smarty
$this->view->set('current_user', $this->user);
$this->view->set('main_css', $css[0]);
if (file_exists('user') && is_dir('user') && count(glob('user/theme*.css')) >= 1) {
$user_css = glob('user/theme*.css');
$this->view->set('user_css', $user_css[0]);
}
$this->view->set('main_js', $js[0]);
$this->view->set('module_js', $modulejs[0]);
$action = $this->action;
$controller = $this->controller;
if (defined('EGS_COMPANY_ID') && EGS_COMPANY_ID !== 'null' && EGS_COMPANY_ID > 0) {
$sc = DataObjectFactory::Factory('Systemcompany');
$sc->load(EGS_COMPANY_ID);
if ($sc->isLoaded()) {
define('SYSTEM_COMPANY', $sc->company);
define('COMPANY_ID', $sc->company_id);
$this->available = ($sc->access_enabled == 'NONE') ? FALSE : TRUE;
$this->audit = ($sc->audit_enabled == 't' ? TRUE : FALSE);
$this->debug = ($sc->debug_enabled == 't' ? TRUE : FALSE);
$this->view->set('info_message', $sc->info_message);
$this->view->set('systemcompany', $sc);
}
}
$policy = DataObjectFactory::Factory('SystemObjectPolicy');
if ($policy->getCount() > 0) {
define('SYSTEM_POLICIES_ENABLED', TRUE);
} else {
define('SYSTEM_POLICIES_ENABLED', FALSE);
}
if (! defined('SYSTEM_COMPANY')) {
define('SYSTEM_COMPANY', '');
}
if (! defined('COMPANY_ID')) {
define('COMPANY_ID', '');
}
// Set auditing/debugging for logged in user
if ($this->user) {
$this->audit = $this->audit ? $this->audit : ($this->user->audit_enabled == 't' ? TRUE : FALSE);
$this->debug = $this->debug ? $this->debug : ($this->user->debug_enabled == 't' ? TRUE : FALSE);
$this->available = $this->available ? ($this->user->access_enabled == 't' ? TRUE : FALSE) : $this->available;
}
if (! $this->available && isLoggedIn()) {
$_SESSION['loggedin'] = FALSE;
$_SESSION['username'] = null;
$flash = Flash::Instance();
$flash->addError('The system is unavailable at present');
$flash->save();
sendto('');
}
define('AUDIT', $this->audit);
define('DEBUG', $this->debug);
$db = DB::Instance();
$db->debug(DEBUG);
if (! defined('EGS_CURRENCY')) {
define('EGS_CURRENCY', 'GBP');
}
if (class_exists('Currency')) {
$currency = DataObjectFactory::Factory('Currency');
$currency->loadBy('currency', EGS_CURRENCY);
if ($currency) {
define('EGS_CURRENCY_SYMBOL', utf8_decode($currency->symbol));
}
}
if (! defined('EGS_CURRENCY_SYMBOL')) {
define('EGS_CURRENCY_SYMBOL', utf8_decode('£'));
}
/**
* *BEGIN CACHE CHECK*****
*/
if (! defined('EGS_COMPANY_ID')) {
define('EGS_COMPANY_ID', '');
}
if (DEBUG) {
$this->writeDebug();
}
$cache_key = md5($_SERVER['REQUEST_URI'] . EGS_COMPANY_ID . EGS_USERNAME);
if (TRUE || ! $smarty->isCached('index.tpl', $cache_key)) {
$flash = Flash::Instance();
$config = Config::Instance();
// output all the variables to smarty
// this replaces $smarty.const.setting_name
$this->view->assign('config', $config->get_all());
setRefererPage();
debug('system::display Calling function ' . get_class($controller) . '::' . $action);
// echo 'system::display (1),'.microtime(TRUE).'<br>';
$controller->$action();
// echo 'system::display (2),'.microtime(TRUE).'<br>';
$flash->save();
// Save any flash messages for audit purposes
$this->flash['errors'] = $flash->getMessages('errors');
$this->flash['warnings'] = $flash->getMessages('warnings');
$this->flash['messages'] = $flash->getMessages('messages');
if (isLoggedIn()) {
$this->access->save();
}
// assign stuff to smarty
$controller->assignModels();
// this code fires $controller->index() if (perhaps) getPrintActions doesn't exist,
// thus overwriting the sidebar. Only fire if subclass of printController
if (is_subclass_of($controller, 'printController') && $action != 'printDialog') {
$this->view->assign('printaction', $controller->getPrintActions());
}
$controllername = str_replace('Controller', '', get_class($controller));
$this->pid = $this->access->getPermission($this->modules, $controllername, $action);
$self = array();
if (! empty($this->pid)) {
$self['pid'] = $this->pid;
}
$self['modules'] = $this->modules;
// $self['controller']=$controllername;
// $self['action']=$action;
$qstring = $_GET;
foreach ($qstring as $qname => $qvalue) {
if (! in_array($qname, array(
'orderby',
'page'
))) {
$self[$qname] = $qvalue;
}
}
$this->view->assign('self', $self);
if (isset($this->user)) {
$this->view->assign('current_user', $this->user);
}
// Session timed out on input form so save the form data while the user logs back in
// See system::setController for where the form data is read after logging back in
if ($this->modules['module'] == 'login' && ! empty($_POST)) {
$_SESSION['data'] = $_POST;
}
$echo = $controller->view->get('echo');
if (($this->ajax || $this->json) && $echo !== FALSE) {
echo $controller->view->get('echo');
exit();
} elseif ($this->modules['module'] == 'login') {
$current = getParamsArray($_SERVER['QUERY_STRING']);
$referer['modules'] = $current['modules'];
$referer['controller'] = 'Index';
$referer['action'] = 'index';
unset($referer['other']);
$_SESSION['referer'][setParamsString($current)] = setParamsString($referer);
} elseif (! isset($_GET['ajax'])) {
$referer = '';
if (! empty($_POST)) {
// This is a save form so set the referer to be the referer's referer!
$referer = (isset($_SESSION['refererPage'])) ? $_SESSION['refererPage'] : '';
}
setReferer($referer);
$current = getParamsArray($_SERVER['QUERY_STRING']);
$flash = Flash::Instance();
$current += array(
'messages' => $flash->getMessages('messages'),
'warnings' => $flash->getMessages('warnings'),
'errors' => $flash->getMessages('errors')
);
$_SESSION['submit_token']['current'] = $current;
}
}
showtime('pre-display');
// echo 'System::display end '.(gettimeofday(TRUE)-$start).'<br>';
// echo 'system::display (3),'.microtime(TRUE).'<br>';
$this->view->display('index_page.tpl', $cache_key);
// echo 'system::display (4),'.microtime(TRUE).'<br>';
showtime('post-display');
}
/*
* Gets the fields for the supplied tablename
*/
public static function getFields($tablename, $cache_results = TRUE)
{
$cached_fields = FALSE;
$cache_id = array(
'table_fields',
$tablename
);
// we might not want to hit the cache
if (MEMCACHED_ENABLED && $cache_results === TRUE) {
// instanciate the cache and get the cache value
$cache = Cache::Instance();
$cached_fields = $cache->get($cache_id);
}
// go and fetch the data and populate the cache
if ($cached_fields === FALSE) {
$fields = Fields::getFields_static($tablename);
$return = array();
if (is_array($fields)) {
foreach ($fields as $field) {
$return[$field->name] = clone $field;
}
} else {
$return = FALSE;
}
if (MEMCACHED_ENABLED && $return !== FALSE && $cache_results === TRUE) {
$cache->add($cache_id, $return);
}
} else {
$return = $cached_fields;
}
return $return;
}
public static function scanDirectories($rootDir, $module, $require = FALSE)
{
if (! empty($module)) {
$start = self::findModulePath($rootDir, $module);
}
if (empty($start)) {
$start = $rootDir;
}
$allData = array();
$allData = array_merge($allData, self::getDirectories($start, 'down', '', $require));
if ($rootDir != $start) {
$allData = array_merge($allData, self::getDirectories($start, 'up', $rootDir, $require));
}
return $allData;
}
public static function getDirectories($start, $direction, $stop = '', $require = FALSE)
{
// echo 'system::getDirectories - '.$direction.' '.$start.'<br>';
$allData = array();
$dirContent = scandir($start);
foreach ($dirContent as $key => $content) {
if ($content != '.' && $content != '..' && $content != 'CVS') {
if (substr($start, - 1) == DIRECTORY_SEPARATOR) {
$path = $start . $content;
} else {
$path = $start . DIRECTORY_SEPARATOR . $content;
}
if (substr($content, - 4) == '.php' && is_file($path) && is_readable($path)) {
if ($require) {
require $path;
} else {
$allData[strtolower(substr_replace($content, '', strrpos($content, '.')))] = $path;
}
} else {
if (is_dir($path) && is_readable($path)) {
// $allData[]=$path.'/';
// echo 'system::getDirectories - '.$direction.' '.$start.' adding path '.$path.'<br>';
// recursive callback to open new directory
if ($direction == 'down') {
$allData = array_merge($allData, self::getDirectories($path, $direction, $stop, $require));
}
}
}
}
}
if (! empty($stop)) {
if (substr($stop, - 1) == DIRECTORY_SEPARATOR) {
$stop = substr($stop, 0, strrpos($stop, DIRECTORY_SEPARATOR));
}
if ($direction == 'up') {
$path = substr($start, 0, strrpos($start, DIRECTORY_SEPARATOR));
if ($path != $stop) {
$allData = array_merge($allData, self::getDirectories($path, $direction, $stop, $require));
}
}
}
return $allData;
}
public static function findModulePath($directory, $module = '')
{
if (! empty($module)) {
$cache_id = array(
'module_dir_path',
strtolower($module)
);
$cache = Cache::Instance();
$module_path = $cache->get($cache_id);
// go and fetch the data and populate the cache
if ($module_path === FALSE) {
$moduleobject = DataObjectFactory::Factory('ModuleObject');
$moduleobject->loadBy('name', $module);
if ($moduleobject->isLoaded()) {
$cache->add($cache_id, FILE_ROOT . $moduleobject->location);
return FILE_ROOT . $moduleobject->location;
} else {
$dirContent = scandir(realpath($directory));
if (is_array($dirContent)) {
foreach ($dirContent as $content) {
if (substr($content, 0, 1) != ".") {
if (substr($directory, - 1) == DIRECTORY_SEPARATOR) {
$path = $directory . $content;
} else {
$path = $directory . DIRECTORY_SEPARATOR . $content;
}
if ($content == $module) {
return $path;
} elseif (file_exists($path) && is_dir($path) && is_readable($path)) {
$path = self::findModulePath($path, $module);
if (! empty($path)) {
return $path;
}
} else {
$path = '';
}
}
}
}
}
} else {
return $module_path;
}
}
return '';
}
public function setAction()
{
showtime("---");
// action
if (empty($this->action)) {
if ($this->router->Dispatch('action') !== null) {
$this->view->assign('action', strtolower($this->router->Dispatch('action')));
}
$this->action = ActionFactory::Factory($this->controller);
if ($this->modules['module'] == 'login') {
$actions = array(
'index',
'password',
'requestpassword',
'login',
'logout'
);
if (! in_array(strtolower($this->action), $actions)) {
$this->action = 'index';
}
}
}
$this->controller->setTemplateName($this->action);
}
public function setController()
{
showtime('pre-controller-new');
$autoloader = &AutoLoader::Instance();
// controller
$controller = ControllerFactory::Factory($this->login_required, $autoloader->paths);
$this->controller = new $controller($this->module, $this->view);
$this->controller->setInjector($this);
$this->controller->setData($this->router->Dispatch());
// If session timed out on input form, get the saved form data
// after the user has logged back in
// see system::display for saving of form data
if (isset($_SESSION['data']) && $this->modules['module'] != 'login') {
$this->controller->setData($_SESSION['data']);
unset($_SESSION['data']);
}
$this->controller->setData($_GET);
$this->controller->setData($_POST);
}
/**
* Return the http request object
*
* @return \Symfony\Component\HttpFoundation\Request
*/
public function getRequest() {
return $this->request;
}
function instantiate($interface, $type = 'SY')
{
if (! defined('EGS_COMPANY_ID')) {
$usercompanyid = - 1;
} else {
$usercompanyid = EGS_COMPANY_ID;
}
if (! isset($_SESSION['injectorclass'][$usercompanyid][$interface])) {
$cc = new ConstraintChain();
$cc->add(new Constraint('name', '=', $interface));
$cc->add(new Constraint('category', '=', $type));
$cc1 = new ConstraintChain();
$cc1->add(new Constraint('usercompanyid', '=', $usercompanyid));
if ($usercompanyid > 0) {
$cc1->add(new Constraint('usercompanyid', '=', - 1), 'OR');
}
$cc2 = new ConstraintChain();
$cc2->add($cc1);
$cc2->add($cc);
$query = "select * from injector_classes where " . $cc2->__toString() . " order by usercompanyid";
$db = &DB::Instance();
$result = $db->GetRow($query);
if (empty($result)) {
return FALSE;
}
$_SESSION['injectorclass'][$usercompanyid][$interface] = $result['class_name'];
}
$class_name = $_SESSION['injectorclass'][$usercompanyid][$interface];
$dependencies = self::instantiateDependencies(new ReflectionClass($class_name));
return call_user_func_array(array(
new ReflectionClass($class_name),
'newInstance'
), $dependencies);
}
private function instantiateDependencies($reflection, $supplied = '')
{
$dependencies = array();
if ($constructor = $reflection->getConstructor()) {
foreach ($constructor->getParameters() as $parameter) {
if ($interface = $parameter->getClass()) {
$dependencies[] = self::instantiate($interface->getName());
} elseif ($dependency = array_shift($supplied)) {
$dependencies[] = $dependency;
}
}
}
return $dependencies;
}
public function get_lib_files($_disable_cache = FALSE)
{
$cache_id = array(
'resources',
'lib_root'
);
$cache = Cache::Instance();
if ($_disable_cache) {
$files = FALSE;
} else {
$files = $cache->get($cache_id);
}
if ($files === FALSE) {
$files = self::scanDirectories(LIB_ROOT, '', FALSE);
// attempt to set the cache value
$cache->add($cache_id, $files);
}
return $files;
}
public function set_autoloader($_disable_cache = FALSE)
{
// include autoloader
require LIB_ROOT . 'classes' . DIRECTORY_SEPARATOR . 'AutoLoader.php';
$autoloader_paths = $this->get_lib_files($_disable_cache);
$autoloader = &AutoLoader::Instance();
$autoloader->addPath($autoloader_paths);
if (file_exists(SITE_CLASSES)) {
$autoloader->addPath(self::scanDirectories(SITE_CLASSES, '', FALSE));
}
$moduleobject = DataObjectFactory::Factory('ModuleObject');
$moduleobject->loadBy('name', 'common');
$scan_dirs = array();
if ($moduleobject->isLoaded()) {
$scan_dirs = $moduleobject->getComponentLocations();
}
if (empty($scan_dirs)) {
$scan_dirs = self::scanDirectories(COMMON_MODULES, '', FALSE);
}