<?php
/*------------------------------------------------------------------------------
  $Id$

  AbanteCart, Ideal OpenSource Ecommerce Solution
  http://www.AbanteCart.com

  Copyright © 2011-2022 Belavier Commerce LLC

  This source file is subject to Open Software License (OSL 3.0)
  License details is bundled with this package in the file LICENSE.txt.
  It is also available at this URL:
  <http://www.opensource.org/licenses/OSL-3.0>

 UPGRADE NOTE:
   Do not edit or add to this file if you wish to upgrade AbanteCart to newer
   versions in the future. If you wish to customize AbanteCart for your
   needs please refer to http://www.AbanteCart.com for more information.
------------------------------------------------------------------------------*/

// set default encoding for multibyte php mod
mb_internal_encoding('UTF-8');
ini_set('default_charset', 'utf-8');
ini_set('serialize_precision', 16);

//default error reporting level.
// See another levels based on debug settings
/** @see AException::logError() */
error_reporting(E_ERROR & ~E_NOTICE);
// AbanteCart Version
include('version.php');
const VERSION = MASTER_VERSION . '.' . MINOR_VERSION . '.' . VERSION_BUILT;
const DS = DIRECTORY_SEPARATOR;

// Detect if localhost is used.
if (!isset($_SERVER['HTTP_HOST'])) {
    $_SERVER['HTTP_HOST'] = 'localhost';
}

// Detect https
if (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == '1')) {
    define('HTTPS', true);
} elseif (isset($_SERVER['HTTP_X_FORWARDED_SERVER'])
    && ($_SERVER['HTTP_X_FORWARDED_SERVER'] == 'secure'
        || $_SERVER['HTTP_X_FORWARDED_SERVER'] == 'ssl')) {
    define('HTTPS', true);
} elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') {
    define('HTTPS', true);
} elseif (isset($_SERVER['SCRIPT_URI']) && (substr($_SERVER['SCRIPT_URI'], 0, 5) == 'https')) {
    define('HTTPS', true);
} elseif (isset($_SERVER['HTTP_HOST']) && (strpos($_SERVER['HTTP_HOST'], ':443') !== false)) {
    define('HTTPS', true);
} else {
    define('HTTPS', false);
}

// Detect http host
if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
    define('REAL_HOST', $_SERVER['HTTP_X_FORWARDED_HOST']);
} else {
    define('REAL_HOST', $_SERVER['HTTP_HOST']);
}

//Set up common paths
const DIR_SYSTEM = DIR_ROOT . DS . 'system' . DS;
const DIR_IMAGE = DIR_ROOT . DS . 'image' . DS;
const DIR_DOWNLOAD = DIR_ROOT . DS . 'download' . DS;
const DIR_DATABASE = DIR_ROOT . DS . 'core' . DS . 'database' . DS;
const DIR_CONFIG = DIR_ROOT . DS . 'core' . DS . 'config' . DS;
const DIR_CACHE = DIR_ROOT . DS . 'system' . DS . 'cache' . DS;
const DIR_LOGS = DIR_ROOT . DS . 'system' . DS . 'logs' . DS;
const DIR_VENDOR = DIR_ROOT . DS . 'vendor' . DS;

require DIR_VENDOR.'autoload.php';

// SEO URL Keyword separator
const SEO_URL_SEPARATOR = '-';

//root category ID
const ROOT_CATEGORY_ID = 0;

// EMAIL REGEXP PATTERN
const EMAIL_REGEX_PATTERN = '/^[A-Z0-9._%-]+@[A-Z0-9.-]{0,61}[A-Z0-9]\.[A-Z]{2,16}$/i';

// Error Reporting
require_once(DIR_CORE.'lib'.DS.'debug.php');
require_once(DIR_CORE.'lib'.DS.'exceptions.php');
require_once(DIR_CORE.'lib'.DS.'error.php');
require_once(DIR_CORE.'lib'.DS.'warning.php');

//define rt - route for application controller
if (isset($_GET['rt'])) {
    define('ROUTE', $_GET['rt']);
} else {
    if (isset($_POST['rt'])) {
        define('ROUTE', $_POST['rt']);
    } else {
        define('ROUTE', 'index/home');
    }
}

//detect API call
$path_nodes = explode('/', ROUTE);
if ($path_nodes[0] == 'a') {
    define('IS_API', true);
} else {
    define('IS_API', false);
}

//Detect the section of the cart to access and build the path definitions
// s=admin or s=storefront (default nothing)
const INDEX_FILE = 'index.php';

if (defined('ADMIN_PATH')
    &&
    ((isset($_GET['s']) && $_GET['s'] == ADMIN_PATH)  || (isset($_POST['s'])) && $_POST['s'] == ADMIN_PATH)
    ) {
    define('IS_ADMIN', true);
    define('DIR_APP_SECTION', DIR_ROOT.DS.'admin'.DS);
    define('DIR_LANGUAGE', DIR_ROOT.DS.'admin'.DS.'language'.DS);
    define('DIR_TEMPLATE', DIR_ROOT.DS.'admin'.DS.'view'.DS);
    define('DIR_STOREFRONT', DIR_ROOT.DS.'storefront'.DS);
    define('DIR_BACKUP', DIR_ROOT.DS.'admin'.DS.'system'.DS.'backup'.DS);
    define('DIR_DATA', DIR_ROOT.DS.'admin'.DS.'system'.DS.'data'.DS);
    //generate unique session name.
    //NOTE: This is a session name not to confuse with actual session id. Candidate to renaming
    define('SESSION_ID', defined('UNIQUE_ID') ? 'AC_CP_'.strtoupper(substr(UNIQUE_ID, 0, 10)) : 'AC_CP_PHPSESSID');
} else {
    define('IS_ADMIN', false);
    define('DIR_APP_SECTION', DIR_ROOT.DS.'storefront'.DS);
    define('DIR_LANGUAGE', DIR_ROOT.DS.'storefront'.DS.'language'.DS);
    define('DIR_TEMPLATE', DIR_ROOT.DS.'storefront'.DS.'view'.DS);
    define('SESSION_ID', defined('UNIQUE_ID') ? 'AC_SF_'.strtoupper(substr(UNIQUE_ID, 0, 10)) : 'AC_SF_PHPSESSID');
    define('EMBED_TOKEN_NAME', 'ABC_TOKEN');
}

try {
    //set ini parameters for session
    ini_set('session.use_trans_sid', 'Off');
    ini_set('session.use_cookies', 'On');
    ini_set('session.cookie_httponly', 'On');

    // Process Global data if Register Globals enabled
    if (ini_get('register_globals')) {
        $path = dirname($_SERVER['PHP_SELF']);
        session_set_cookie_params(
            0,
            $path,
            null,
            false,
            true
        );
        unset($path);
        session_name(SESSION_ID);
        session_start();

        $globals = [$_REQUEST, $_SESSION, $_SERVER, $_FILES];
        foreach ($globals as $global) {
            foreach (array_keys($global) as $key) {
                unset($$key);
            }
        }
    }

// Magic Quotes
    if (ini_get('magic_quotes_gpc')) {
        function clean($data)
        {
            if (is_array($data)) {
                foreach ($data as $key => $value) {
                    $data[clean($key)] = clean($value);
                }
            } else {
                $data = stripslashes($data);
            }
            return $data;
        }

        $_GET = clean($_GET);
        $_POST = clean($_POST);
        $_COOKIE = clean($_COOKIE);
    }

    if (!ini_get('date.timezone')) {
        date_default_timezone_set('UTC');
    }

    if (!isset($_SERVER['DOCUMENT_ROOT'])) {
        if (isset($_SERVER['SCRIPT_FILENAME'])) {
            $_SERVER['DOCUMENT_ROOT'] = str_replace(
                '\\',
                '/',
                substr($_SERVER['SCRIPT_FILENAME'], 0, 0 - strlen($_SERVER['PHP_SELF']))
            );
        }
    }

    if (!isset($_SERVER['DOCUMENT_ROOT'])) {
        if (isset($_SERVER['PATH_TRANSLATED'])) {
            $_SERVER['DOCUMENT_ROOT'] = str_replace(
                '\\',
                '/',
                substr(str_replace('\\\\', '\\', $_SERVER['PATH_TRANSLATED']), 0, 0 - strlen($_SERVER['PHP_SELF']))
            );
        }
    }

    if (!isset($_SERVER['REQUEST_URI'])) {
        $_SERVER['REQUEST_URI'] = substr($_SERVER['PHP_SELF'], 1);
        if (isset($_SERVER['QUERY_STRING'])) {
            $_SERVER['REQUEST_URI'] .= '?'.$_SERVER['QUERY_STRING'];
        }
    }

// relative paths for extensions
    define('DIR_EXTENSIONS', 'extensions'.DS);
    define('DIR_EXT', DIR_ROOT.DS.DIR_EXTENSIONS);
    define('DIR_EXT_CORE', DS.'core'.DS);
    define('DIR_EXT_STORE', DS.'storefront'.DS);
    define('DIR_EXT_ADMIN', DS.'admin'.DS);
    define('DIR_EXT_IMAGE', DS.'image'.DS);
    define('DIR_EXT_LANGUAGE', 'language'.DS);
    define('DIR_EXT_TEMPLATE', 'view'.DS);

//resources
    define('DIR_RESOURCE', DIR_ROOT.DS.'resources'.DS);

//postfixes for template override
    define('POSTFIX_OVERRIDE', '.override');
    define('POSTFIX_PRE', '.pre');
    define('POSTFIX_POST', '.post');

// Include Engine
    require_once(DIR_CORE.'engine'.DS.'router.php');
    require_once(DIR_CORE.'engine'.DS.'page.php');
    require_once(DIR_CORE.'engine'.DS.'response.php');
    require_once(DIR_CORE.'engine'.DS.'api.php');
    require_once(DIR_CORE.'engine'.DS.'task.php');
    require_once(DIR_CORE.'engine'.DS.'dispatcher.php');
    require_once(DIR_CORE.'engine'.DS.'controller.php');
    require_once(DIR_CORE.'engine'.DS.'controller_api.php');
    require_once(DIR_CORE.'engine'.DS.'view.php');
    require_once(DIR_CORE.'engine'.DS.'loader.php');
    require_once(DIR_CORE.'engine'.DS.'model.php');
    require_once(DIR_CORE.'engine'.DS.'registry.php');
    require_once(DIR_CORE.'engine'.DS.'resources.php');
    require_once(DIR_CORE.'engine'.DS.'html.php');
    require_once(DIR_CORE.'engine'.DS.'layout.php');
    require_once(DIR_CORE.'engine'.DS.'form.php');
    require_once(DIR_CORE.'engine'.DS.'extensions.php');
    require_once(DIR_CORE.'engine'.DS.'hook.php');
    require_once(DIR_CORE.'engine'.DS.'attribute.php');
    require_once(DIR_CORE.'engine'.DS.'promotion.php');
    require_once(DIR_CORE.'engine'.DS.'language.php');

    require_once(DIR_CORE.'helper'.DS.'html.php');
    require_once(DIR_CORE.'helper'.DS.'utils.php');
    require_once(DIR_CORE.'helper'.DS.'system_check.php');

// Include library files
    require_once(DIR_CORE.'lib'.DS.'cache.php');
    require_once(DIR_CORE.'lib'.DS.'config.php');
    require_once(DIR_CORE.'lib'.DS.'db.php');
    require_once(DIR_CORE.'lib'.DS.'connect.php');
    require_once(DIR_CORE.'lib'.DS.'document.php');
    require_once(DIR_CORE.'lib'.DS.'image.php');
    require_once(DIR_CORE.'lib'.DS.'log.php');
    require_once(DIR_CORE.'lib'.DS.'mail.php');
    require_once(DIR_CORE.'lib'.DS.'message.php');
    require_once(DIR_CORE.'lib'.DS.'pagination.php');
    require_once(DIR_CORE.'lib'.DS.'request.php');
    require_once(DIR_CORE.'lib'.DS.'response.php');
    require_once(DIR_CORE.'lib'.DS.'session.php');
    require_once(DIR_CORE.'lib'.DS.'template.php');
    require_once(DIR_CORE.'lib'.DS.'xml2array.php');
    require_once(DIR_CORE.'lib'.DS.'data.php');
    require_once(DIR_CORE.'lib'.DS.'file.php');
    require_once(DIR_CORE.'lib'.DS.'download.php');

// Application Classes
    require_once(DIR_CORE.'lib'.DS.'customer.php');
    require_once(DIR_CORE.'lib'.DS.'order.php');
    require_once(DIR_CORE.'lib'.DS.'order_status.php');
    require_once(DIR_CORE.'lib'.DS.'currency.php');
    require_once(DIR_CORE.'lib'.DS.'tax.php');
    require_once(DIR_CORE.'lib'.DS.'weight.php');
    require_once(DIR_CORE.'lib'.DS.'length.php');
    require_once(DIR_CORE.'lib'.DS.'cart.php');
    require_once(DIR_CORE.'lib'.DS.'user.php');
    require_once(DIR_CORE.'lib'.DS.'dataset.php');
    require_once(DIR_CORE.'lib'.DS.'encryption.php');
    require_once(DIR_CORE.'lib'.DS.'menu_control.php');
    require_once(DIR_CORE.'lib'.DS.'menu_control_storefront.php');
    require_once(DIR_CORE.'lib'.DS.'rest.php');
    require_once(DIR_CORE.'lib'.DS.'filter.php');
    require_once(DIR_CORE.'lib'.DS.'listing.php');
    require_once(DIR_CORE.'lib'.DS.'task_manager.php');
    require_once(DIR_CORE.'lib'.DS.'im.php');
    require_once(DIR_CORE.'lib'.DS.'csrf_token.php');

//Admin manager classes
    if (IS_ADMIN === true) {
        require_once(DIR_CORE.'lib'.DS.'order_manager.php');
        require_once(DIR_CORE.'lib'.DS.'layout_manager.php');
        require_once(DIR_CORE.'lib'.DS.'content_manager.php');
        require_once(DIR_CORE.'lib'.DS.'package_manager.php');
        require_once(DIR_CORE.'lib'.DS.'form_manager.php');
        require_once(DIR_CORE.'lib'.DS.'extension_manager.php');
        require_once(DIR_CORE.'lib'.DS.'resource_manager.php');
        require_once(DIR_CORE.'lib'.DS.'resource_upload.php');
        require_once(DIR_CORE.'lib'.DS.'listing_manager.php');
        require_once(DIR_CORE.'lib'.DS.'attribute_manager.php');
        require_once(DIR_CORE.'lib'.DS.'language_manager.php');
        require_once(DIR_CORE.'lib'.DS.'backup.php');
        require_once(DIR_CORE.'lib'.DS.'file_uploads_manager.php');
        require_once(DIR_CORE.'lib'.DS.'admin_commands.php');
        require_once(DIR_CORE.'lib'.DS.'im_manager.php');
    }

// Registry
    $registry = Registry::getInstance();

// Loader
    $registry->set('load', new ALoader($registry));

// Request
    $request = new ARequest();
    $registry->set('request', $request);

// Response
    $response = new AResponse();
    $response->addHeader('Content-Type: text/html; charset=utf-8');
    $response->addHeader('X-Content-Type-Options: nosniff');
    if(IS_ADMIN === true) {
        /** @var ModelToolMPAPI $mpMdl */
        $mpMdl = $registry->get('load')->model('tool/mp_api');
        $mpUrl = parse_url($mpMdl->getMPURL());
        $response->addHeader('Access-Control-Allow-Origin: ' . $mpUrl['scheme'] . "://" . $mpUrl['host']);
        $response->addHeader('Access-Control-Allow-Credentials: true');
    }
    $registry->set('response', $response);
    unset($response);

// URL Class
    $registry->set('html', new AHtml($registry));

//Hook class
    $hook = new AHook($registry);

// Database
    $registry->set('db', new ADB(DB_DRIVER, DB_HOSTNAME, DB_USERNAME, DB_PASSWORD, DB_DATABASE));

// Cache
    $registry->set('cache', new ACache());

    $config = new AConfig($registry);
    $registry->set('config', $config);

// Session
    $registry->set('session', new ASession(SESSION_ID));

    if (IS_ADMIN === true) {
        if ($config->has('current_store_id')) {
            $registry->get('session')->data['current_store_id'] = (int) $config->get('current_store_id');
        } elseif (isset($registry->get('session')->data['current_store_id'])) {
            $config->set('current_store_id', $registry->get('session')->data['current_store_id']);
        }else{
            $config->set('current_store_id', (int) $config->get('config_store_id'));
        }
    }

// CSRF Token Class
    $registry->set('csrftoken', new CSRFToken());

// Set up HTTP and HTTPS based automatic and based on config
    if (IS_ADMIN === true) {
        define('HTTP_DIR_NAME', rtrim(dirname($_SERVER['PHP_SELF']), '/.\\'));
        // Admin HTTP
        define('AUTO_SERVER', '//'.REAL_HOST.HTTP_DIR_NAME.'/');
        define('HTTP_SERVER', 'http:'.AUTO_SERVER);
        define('HTTP_CATALOG', HTTP_SERVER);
        define('HTTP_EXT', HTTP_SERVER.'extensions/');
        define('HTTP_IMAGE', HTTP_SERVER.'image/');
        define('HTTP_DIR_RESOURCE', HTTP_SERVER.'resources/');
        //we use Protocol-relative URLs here
        define('HTTPS_IMAGE', AUTO_SERVER.'image/');
        define('HTTPS_DIR_RESOURCE', AUTO_SERVER.'resources/');
        //Admin HTTPS
        if (HTTPS === true) {
            define('HTTPS_SERVER', 'https:'.AUTO_SERVER);
            define('HTTPS_CATALOG', HTTPS_SERVER);
            define('HTTPS_EXT', HTTPS_SERVER.'extensions/');
        } else {
            define('HTTPS_SERVER', HTTP_SERVER);
            define('HTTPS_CATALOG', HTTP_CATALOG);
            define('HTTPS_EXT', HTTP_EXT);
        }

        //Admin specific loads
        $registry->set('extension_manager', new AExtensionManager());
    } else {
        // Storefront HTTP
        $store_url = $config->get('config_url');
        define('HTTP_SERVER', $store_url);
        define('HTTP_IMAGE', HTTP_SERVER.'image/');
        define('HTTP_EXT', HTTP_SERVER.'extensions/');
        define('HTTP_DIR_RESOURCE', HTTP_SERVER.'resources/');
        // Storefront HTTPS
        if ($config->get('config_ssl') || HTTPS === true) {
            if ($config->get('config_ssl_url')) {
                $store_url = $config->get('config_ssl_url');
            }
            define('AUTO_SERVER', '//'.preg_replace('/\w+:\/\//', '', $store_url));
            define('HTTPS_SERVER', 'https:'.AUTO_SERVER);
            define('HTTPS_EXT', HTTPS_SERVER.'extensions/');
        } else {
            define('AUTO_SERVER', '//'.preg_replace('/\w+:\/\//', '', $store_url));
            define('HTTPS_SERVER', HTTP_SERVER);
            define('HTTPS_EXT', HTTP_EXT);
        }
        //we use Protocol-relative URLs here
        define('HTTPS_DIR_RESOURCE', AUTO_SERVER.'resources/');
        define('HTTPS_IMAGE', AUTO_SERVER.'image/');

        //set internal sign of shared ssl domains
        if (preg_replace('/\w+:\/\//', '', HTTPS_SERVER) != preg_replace('/\w+:\/\//', '', HTTP_SERVER)) {
            $registry->get('config')->set('config_shared_session', true);
        }
    }

//Messages
    $registry->set('messages', new AMessage());

// Log
    $registry->set('log', new ALog(DIR_LOGS.$config->get('config_error_filename')));

// Document
    $registry->set('document', new ADocument());

// AbanteCart Snapshot details
    $registry->set('snapshot', 'AbanteCart/'.VERSION.' '.$_SERVER['SERVER_SOFTWARE'].' ('.$_SERVER['SERVER_NAME'].')');
//Non-apache fix for REQUEST_URI
    if (!isset($_SERVER['REQUEST_URI'])) {
        $_SERVER['REQUEST_URI'] = substr($_SERVER['PHP_SELF'], 1);
        if (isset($_SERVER['QUERY_STRING'])) {
            $_SERVER['REQUEST_URI'] .= '?'.$_SERVER['QUERY_STRING'];
        }
    }
    $registry->set('uri', $_SERVER['REQUEST_URI']);

//main instance of data encryption
    $registry->set('dcrypt', new ADataEncryption());

// Extensions api
    $extensions = new ExtensionsApi();
    if (IS_ADMIN === true) {
        //for admin we load all available(installed) extensions.
        //This is a solution to make controllers and hooks available for extensions that are in the status off.
        $extensions->loadAvailableExtensions();
    } else {
        $extensions->loadEnabledExtensions();
    }
    $registry->set('extensions', $extensions);

//validate template
    $is_valid = false;
    $enabled_extensions = $extensions->getEnabledExtensions();
    unset($extensions);

//check if we specify template directly
    $template = 'default';
    if (IS_ADMIN !== true && !empty($request->get['sf'])) {
        $template = preg_replace('/[^A-Za-z0-9_]+/', '', $request->get['sf']);
        $dir = $template.DIR_EXT_STORE.DIR_EXT_TEMPLATE.$template;
        if (in_array($template, $enabled_extensions) && is_dir(DIR_EXT.$dir)) {
            $is_valid = true;
        } else {
            $is_valid = false;
        }
    }

    if (!$is_valid) {
        //check template defined in settings
        if (IS_ADMIN === true) {
            $template = $config->get('admin_template');
            $dir = $template.DIR_EXT_ADMIN.DIR_EXT_TEMPLATE.$template;
        } else {
            $template = $config->get('config_storefront_template');
            $dir = $template.DIR_EXT_STORE.DIR_EXT_TEMPLATE.$template;
        }

        if (in_array($template, $enabled_extensions) && is_dir(DIR_EXT.$dir)) {
            $is_valid = true;
        } else {
            $is_valid = false;
        }
        //check if this is default template
        if (!$is_valid && is_dir(DIR_TEMPLATE.$template)) {
            $is_valid = true;
        }
    }

    if (!$is_valid) {
        $error = new AError ('Template '.$template.' is not found - roll back to default');
        $error->toLog()->toDebug();
        $template = 'default';
    }

    if (IS_ADMIN === true) {
        $config->set('original_admin_template', $config->get('admin_template'));
        $config->set('admin_template', $template);
        // Load language
        $lang_obj = new ALanguageManager($registry);
    } else {
        $config->set('original_config_storefront_template', $config->get('config_storefront_template'));
        $config->set('config_storefront_template', $template);
        // Load language
        $lang_obj = new ALanguage($registry);
    }

// Create Global Layout Instance
    $registry->set('layout', new ALayout($registry, $template));

// load download class
    $registry->set('download', new ADownload());

//load main language section
    $registry->set('language', $lang_obj);
    unset($lang_obj);
    $registry->get('language')->load();
    $hook->hk_InitEnd();

//load order status class
    $registry->set('order_status', new AOrderStatus($registry));

//IM
    if (IS_ADMIN === true) {
        $registry->set('im', new AIMManager());
    } else {
        $registry->set('im', new AIM());
    }
} //eof try
catch (AException $e) {
    ac_exception_handler($e);
}
