<?php
/**
 * 2007-2018 PrestaShop
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to http://www.prestashop.com for more information.
 *
 * @author    PrestaShop SA <contact@prestashop.com>
 * @copyright 2007-2018 PrestaShop SA
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * International Registered Trademark & Property of PrestaShop SA
 */

use PrestaShop\PrestaShop\Adapter\CoreException;

class AdminLoginControllerCore extends AdminController
{
    public function __construct()
    {
        $this->bootstrap = true;
        parent::__construct();
        $this->errors = array();
        $this->display_header = false;
        $this->display_footer = false;
        $this->layout = _PS_ADMIN_DIR_.DIRECTORY_SEPARATOR.'themes'.DIRECTORY_SEPARATOR.$this->bo_theme
            .DIRECTORY_SEPARATOR.'template'.DIRECTORY_SEPARATOR.'controllers'.DIRECTORY_SEPARATOR.'login'
            .DIRECTORY_SEPARATOR.'layout.tpl';

        if (!headers_sent()) {
            header('Login: true');
        }
    }

    public function setMedia($isNewTheme = false)
    {
        $this->addJquery();
        $this->addjqueryPlugin('validate');
        $this->addJS(_PS_JS_DIR_.'jquery/plugins/validate/localization/messages_'.$this->context->language->iso_code.'.js');
        $this->addCSS(__PS_BASE_URI__.$this->admin_webpath.'/themes/'.$this->bo_theme.'/public/theme.css', 'all', 0);
        $this->addJS(_PS_JS_DIR_.'vendor/spin.js');
        $this->addJS(_PS_JS_DIR_.'vendor/ladda.js');
        Media::addJsDef(array('img_dir' => _PS_IMG_));
        Media::addJsDefL('one_error', $this->trans('There is one error.', array(), 'Admin.Notifications.Error'));
        Media::addJsDefL('more_errors', $this->trans('There are several errors.', array(), 'Admin.Notifications.Error'));

        Hook::exec('actionAdminLoginControllerSetMedia');

        // Specific Admin Theme
        $this->addCSS(__PS_BASE_URI__.$this->admin_webpath.'/themes/'.$this->bo_theme.'/css/overrides.css', 'all', PHP_INT_MAX);
    }

    public function initContent()
    {
        if (!Tools::usingSecureMode() && Configuration::get('PS_SSL_ENABLED')) {
            // You can uncomment these lines if you want to force https even from localhost and automatically redirect
            // header('HTTP/1.1 301 Moved Permanently');
            // header('Location: '.Tools::getShopDomainSsl(true).$_SERVER['REQUEST_URI']);
            // exit();
            $clientIsMaintenanceOrLocal = in_array(Tools::getRemoteAddr(), array_merge(array('127.0.0.1'), explode(',', Configuration::get('PS_MAINTENANCE_IP'))));
            // If ssl is enabled, https protocol is required. Exception for maintenance and local (127.0.0.1) IP
            if ($clientIsMaintenanceOrLocal) {
                $warningSslMessage = $this->trans('SSL is activated. However, your IP is allowed to enter unsecure mode for maintenance or local IP issues.', array(), 'Admin.Login.Notification');
            } else {
                $url = 'https://'.Tools::safeOutput(Tools::getServerName()).Tools::safeOutput($_SERVER['REQUEST_URI']);
                $warningSslMessage = $this->trans(
                    'SSL is activated. Please connect using the following link to [1]log in to secure mode (https://)[/1]',
                    array('[1]' => '<a href="' . $url .'">', '[/1]' => '</a>'),
                    'Admin.Login.Notification'
                );
            }
            $this->context->smarty->assign('warningSslMessage', $warningSslMessage);
        }

        if (file_exists(_PS_ADMIN_DIR_.'/../install')) {
            $this->context->smarty->assign('wrong_install_name', true);
        }

        if (basename(_PS_ADMIN_DIR_) == 'admin' && file_exists(_PS_ADMIN_DIR_.'/../admin/')) {
            $rand = 'admin'.sprintf('%03d', rand(0, 999)).Tools::strtolower(Tools::passwdGen(6)).'/';
            if (@rename(_PS_ADMIN_DIR_.'/../admin/', _PS_ADMIN_DIR_.'/../'.$rand)) {
                Tools::redirectAdmin('../'.$rand);
            } else {
                $this->context->smarty->assign(array(
                    'wrong_folder_name' => true
                ));
            }
        } else {
            $rand = basename(_PS_ADMIN_DIR_).'/';
        }

        $this->context->smarty->assign(array(
            'randomNb' => $rand,
            'adminUrl' => Tools::getCurrentUrlProtocolPrefix().Tools::getShopDomain().__PS_BASE_URI__.$rand
        ));

        // Redirect to admin panel
        if (Tools::isSubmit('redirect') && Validate::isControllerName(Tools::getValue('redirect'))) {
            $this->context->smarty->assign('redirect', Tools::getValue('redirect'));
        } else {
            $tab = new Tab((int)$this->context->employee->default_tab);
            $this->context->smarty->assign('redirect', $this->context->link->getAdminLink($tab->class_name));
        }

        if ($nb_errors = count($this->errors)) {
            $this->context->smarty->assign(array(
                'errors' => $this->errors,
                'nbErrors' => $nb_errors,
                'shop_name' => Tools::safeOutput(Configuration::get('PS_SHOP_NAME')),
                'disableDefaultErrorOutPut' => true,
            ));
        }

        if ($email = Tools::getValue('email')) {
            $this->context->smarty->assign('email', $email);
        }
        if ($password = Tools::getValue('password')) {
            $this->context->smarty->assign('password', $password);
        }

        // For reset password feature
        if ($reset_token = Tools::getValue('reset_token')) {
            $this->context->smarty->assign('reset_token', $reset_token);
        }
        if ($id_employee = Tools::getValue('id_employee')) {
            $this->context->smarty->assign('id_employee', $id_employee);
            $employee = new Employee($id_employee);
            if (Validate::isLoadedObject($employee)) {
                $this->context->smarty->assign('reset_email', $employee->email);
            }
        }

        $this->setMedia($isNewTheme = false);
        $this->initHeader();
        parent::initContent();
        $this->initFooter();

        //force to disable modals
        $this->context->smarty->assign('modals', null);
    }

    public function checkToken()
    {
        return true;
    }

    /**
     * All BO users can access the login page
     *
     * @return bool
     */
    public function viewAccess($disable = false)
    {
        return true;
    }

    public function postProcess()
    {
        if (Tools::isSubmit('submitLogin')) {
            $this->processLogin();
        } elseif (Tools::isSubmit('submitForgot')) {
            $this->processForgot();
        } elseif (Tools::isSubmit('submitReset')) {
            $this->processReset();
        }
    }

    public function processLogin()
    {
        /* Check fields validity */
        $passwd = trim(Tools::getValue('passwd'));
        $email = trim(Tools::getValue('email'));
        if (empty($email)) {
            $this->errors[] = $this->trans('Email is empty.', array(), 'Admin.Notifications.Error');
        } elseif (!Validate::isEmail($email)) {
            $this->errors[] = $this->trans('Invalid email address.', array(), 'Admin.Notifications.Error');
        }

        if (empty($passwd)) {
            $this->errors[] = $this->trans('The password field is blank.', array(), 'Admin.Notifications.Error');
        } elseif (!Validate::isPasswd($passwd)) {
            $this->errors[] = $this->trans('Invalid password.', array(), 'Admin.Notifications.Error');
        }

        if (!count($this->errors)) {
            // Find employee
            $this->context->employee = new Employee();
            $is_employee_loaded = $this->context->employee->getByEmail($email, $passwd);
            $employee_associated_shop = $this->context->employee->getAssociatedShops();
            if (!$is_employee_loaded) {
                $this->errors[] = $this->trans('The employee does not exist, or the password provided is incorrect.', array(), 'Admin.Login.Notification');
                $this->context->employee->logout();
            } elseif (empty($employee_associated_shop) && !$this->context->employee->isSuperAdmin()) {
                $this->errors[] = $this->trans('This employee does not manage the shop anymore (either the shop has been deleted or permissions have been revoked).', array(), 'Admin.Login.Notification');
                $this->context->employee->logout();
            } else {
                PrestaShopLogger::addLog($this->trans('Back office connection from %ip%', array('%ip%' => Tools::getRemoteAddr()), 'Admin.Advparameters.Feature'), 1, null, '', 0, true, (int)$this->context->employee->id);

                $this->context->employee->remote_addr = (int)ip2long(Tools::getRemoteAddr());
                // Update cookie
                $cookie = Context::getContext()->cookie;
                $cookie->id_employee = $this->context->employee->id;
                $cookie->email = $this->context->employee->email;
                $cookie->profile = $this->context->employee->id_profile;
                $cookie->passwd = $this->context->employee->passwd;
                $cookie->remote_addr = $this->context->employee->remote_addr;

                if (!Tools::getValue('stay_logged_in')) {
                    $cookie->last_activity = time();
                }

                $cookie->write();

                // If there is a valid controller name submitted, redirect to it
                if (isset($_POST['redirect']) && Validate::isControllerName($_POST['redirect'])) {
                    $url = $this->context->link->getAdminLink($_POST['redirect']);
                } else {
                    $tab = new Tab((int)$this->context->employee->default_tab);
                    $url = $this->context->link->getAdminLink($tab->class_name);
                }

                if (Tools::isSubmit('ajax')) {
                    die(json_encode(array('hasErrors' => false, 'redirect' => $url)));
                } else {
                    $this->redirect_after = $url;
                }
            }
        }
        if (Tools::isSubmit('ajax')) {
            die(json_encode(array('hasErrors' => true, 'errors' => $this->errors)));
        }
    }

    public function processForgot()
    {
        if (_PS_MODE_DEMO_) {
            $this->errors[] = $this->trans('This functionality has been disabled.', array(), 'Admin.Notifications.Error');
        } elseif (!($email = trim(Tools::getValue('email_forgot')))) {
            $this->errors[] = $this->trans('Email is empty.', array(), 'Admin.Notifications.Error');
        } elseif (!Validate::isEmail($email)) {
            $this->errors[] = $this->trans('Invalid email address.', array(), 'Admin.Notifications.Error');
        } else {
            $employee = new Employee();
            if (!$employee->getByEmail($email) || !$employee) {
                $this->errors[] = $this->trans('This account does not exist.', array(), 'Admin.Login.Notification');
            } elseif ((strtotime($employee->last_passwd_gen.'+'.Configuration::get('PS_PASSWD_TIME_BACK').' minutes') - time()) > 0) {
                $this->errors[] = $this->trans('You can reset your password every %interval% minute(s) only. Please try again later.', array('%interval%' => Configuration::get('PS_PASSWD_TIME_BACK')), 'Admin.Login.Notification');
            }
        }

        if (!count($this->errors)) {
            if (!$employee->hasRecentResetPasswordToken()) {
                $employee->stampResetPasswordToken();
                $employee->update();
            }

            $admin_url = $this->context->link->getAdminLink('AdminLogin');
            $params = array(
                '{email}' => $employee->email,
                '{lastname}' => $employee->lastname,
                '{firstname}' => $employee->firstname,
                '{url}' => $admin_url.'&id_employee='.(int)$employee->id.'&reset_token='.$employee->reset_password_token
            );

            $employeeLanguage = new Language((int) $employee->id_lang);

            if (
                Mail::Send(
                    $employee->id_lang,
                    'password_query',
                    $this->trans(
                        'Your new password',
                        array(),
                        'Emails.Subject',
                        $employeeLanguage->locale
                    ),
                    $params,
                    $employee->email,
                    $employee->firstname.' '.$employee->lastname
                )
            ) {
                // Update employee only if the mail can be sent
                Shop::setContext(Shop::CONTEXT_SHOP, (int)min($employee->getAssociatedShops()));
                die(Tools::jsonEncode(array(
                    'hasErrors' => false,
                    'confirm' => $this->trans('Please, check your mailbox. A link to reset your password has been sent to you.', array(), 'Admin.Login.Notification')
                )));
            } else {
                die(Tools::jsonEncode(array(
                    'hasErrors' => true,
                    'errors' => array($this->trans('An error occurred while attempting to reset your password.', array(), 'Admin.Login.Notification'))
                )));
            }
        } elseif (Tools::isSubmit('ajax')) {
            die(Tools::jsonEncode(array('hasErrors' => true, 'errors' => $this->errors)));
        }
    }

    public function processReset()
    {
        if (_PS_MODE_DEMO_) {
            $this->errors[] = $this->trans('This functionality has been disabled.', array(), 'Admin.Notifications.Error');
        } elseif (!($reset_token_value = trim(Tools::getValue('reset_token')))) {
            // hidden fields
            $this->errors[] = $this->trans('Some identification information is missing.', array(), 'Admin.Login.Notification');
        } elseif (!($id_employee = trim(Tools::getValue('id_employee')))) {
            $this->errors[] = $this->trans('Some identification information is missing.', array(), 'Admin.Login.Notification');
        } elseif (!($reset_email = trim(Tools::getValue('reset_email')))) {
            $this->errors[] = $this->trans('Some identification information is missing.', array(), 'Admin.Login.Notification');
        } elseif (!($reset_password = trim(Tools::getValue('reset_passwd')))) {
            // password (twice)
            $this->errors[] = $this->trans('The password is missing: please enter your new password.', array(), 'Admin.Login.Notification');
        } elseif (!Validate::isPasswd($reset_password)) {
            $this->errors[] = $this->trans('The password is not in a valid format.', array(), 'Admin.Login.Notification');
        } elseif (!($reset_confirm = trim(Tools::getValue('reset_confirm')))) {
            $this->errors[] = $this->trans('The confirmation is empty: please fill in the password confirmation as well.', array(), 'Admin.Login.Notification');
        } elseif ($reset_password !== $reset_confirm) {
            $this->errors[] = $this->trans('The password and its confirmation do not match. Please double check both passwords.', array(), 'Admin.Login.Notification');
        } else {
            $employee = new Employee();
            if (!$employee->getByEmail($reset_email) || !$employee || $employee->id != $id_employee) { // check matching employee id with its email
                $this->errors[] = $this->trans('This account does not exist.', array(), 'Admin.Login.Notification');
            } elseif ((strtotime($employee->last_passwd_gen.'+'.Configuration::get('PS_PASSWD_TIME_BACK').' minutes') - time()) > 0) {
                $this->errors[] = $this->trans('You can reset your password every %interval% minute(s) only. Please try again later.', array('%interval%' => Configuration::get('PS_PASSWD_TIME_BACK')), 'Admin.Login.Notification');
            } elseif ($employee->getValidResetPasswordToken() !== $reset_token_value) {
                // To update password, we must have the temporary reset token that matches.
                $this->errors[] = $this->trans('Your password reset request expired. Please start again.', array(), 'Admin.Login.Notification');
            }
        }

        if (!count($this->errors)) {
            $employee->passwd = $this->get('hashing')->hash($reset_password, _COOKIE_KEY_);
            $employee->last_passwd_gen = date('Y-m-d H:i:s', time());

            $params = array(
                '{email}' => $employee->email,
                '{lastname}' => $employee->lastname,
                '{firstname}' => $employee->firstname,
            );

            $employeeLanguage = new Language((int) $this->context->employee->id_lang);

            if (
                Mail::Send(
                    $employee->id_lang,
                    'password',
                    $this->trans(
                        'Your new password',
                        array(),
                        'Emails.Subject',
                        $employeeLanguage->locale
                    ),
                    $params,
                    $employee->email,
                    $employee->firstname.' '.$employee->lastname
                )
            ) {
                // Update employee only if the mail can be sent
                Shop::setContext(Shop::CONTEXT_SHOP, (int)min($employee->getAssociatedShops()));

                $result = $employee->update();
                if (!$result) {
                    $this->errors[] = $this->trans('An error occurred while attempting to change your password.', array(), 'Admin.Login.Notification');
                } else {
                    $employee->removeResetPasswordToken(); // Delete temporary reset token
                    $employee->update();
                    die(Tools::jsonEncode(array(
                        'hasErrors' => false,
                        'confirm' => $this->trans('The password has been changed successfully.', array(), 'Admin.Login.Notification')
                    )));
                }
            } else {
                die(Tools::jsonEncode(array(
                    'hasErrors' => true,
                    'errors' => array($this->trans('An error occurred while attempting to change your password.', array(), 'Admin.Login.Notification'))
                )));
            }
        } elseif (Tools::isSubmit('ajax')) {
            die(Tools::jsonEncode(array('hasErrors' => true, 'errors' => $this->errors)));
        }
    }
}
