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administrator/components/com_users/postinstall/multifactorauth.php

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+<?php
+
+/**
+ * @package     Joomla.Administrator
+ * @subpackage  com_users
+ *
+ * @copyright   (C) 2022 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+use Joomla\CMS\Factory;
+use Joomla\CMS\Plugin\PluginHelper;
+use Joomla\Database\DatabaseInterface;
+use Joomla\Database\ParameterType;
+
+// phpcs:disable PSR1.Files.SideEffects
+\defined('_JEXEC') or die;
+// phpcs:enable PSR1.Files.SideEffects
+
+/**
+ * Post-installation message about the new Multi-factor Authentication: condition check.
+ *
+ * Returns true if neither of the two new core MFA plugins are enabled.
+ *
+ * @return  boolean
+ * @since   4.2.0
+ */
+function com_users_postinstall_mfa_condition(): bool
+{
+    return \count(PluginHelper::getPlugin('multifactorauth')) < 1;
+}
+
+/**
+ * Post-installation message about the new Multi-factor Authentication: action.
+ *
+ * Enables the core MFA plugins.
+ *
+ * @return  void
+ * @since   4.2.0
+ */
+function com_users_postinstall_mfa_action(): void
+{
+    /** @var DatabaseInterface $db */
+    $db             = Factory::getContainer()->get(DatabaseInterface::class);
+    $coreMfaPlugins = ['email', 'totp', 'webauthn', 'yubikey'];
+
+    $query = $db->getQuery(true)
+        ->update($db->quoteName('#__extensions'))
+        ->set($db->quoteName('enabled') . ' = 1')
+        ->where($db->quoteName('type') . ' = ' . $db->quote('plugin'))
+        ->where($db->quoteName('folder') . ' = ' . $db->quote('multifactorauth'))
+        ->whereIn($db->quoteName('element'), $coreMfaPlugins, ParameterType::STRING);
+    $db->setQuery($query);
+    $db->execute();
+
+    $url = 'index.php?option=com_plugins&filter[folder]=multifactorauth';
+    Factory::getApplication()->redirect($url);
+}