<?php
/**
 * WP 2FA - Two-factor authentication for WordPress .
 *
 * @copyright Copyright (C) 2013-2025, Melapress - support@melapress.com
 * @license   http://www.gnu.org/licenses/gpl-3.0.html GNU General Public License, version 3 or higher
 *
 * @wordpress-plugin
 * Plugin Name: WP 2FA - Two-factor authentication for WordPress 
 * Version:     3.0.1
 * Plugin URI:  https://melapress.com/
 * Description: Easily add an additional layer of security to your WordPress login pages. Enable Two-Factor Authentication for you and all your website users with this easy to use plugin.
 * Author:      Melapress
 * Author URI:  https://melapress.com/
 * Text Domain: wp-2fa
 * Domain Path: /languages/
 * License:     GPL v3
 * Requires at least: 5.5
 * Requires PHP: 7.4
 * Network: true
 *
 * @package WP2FA
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @fs_ignore /dist/, /extensions/, /freemius/, /includes/, /languages/, /third-party/, /vendor/
 */

use WP2FA\WP2FA;
use WP2FA\Utils\Migration;
use WP2FA\Extensions_Loader;
use WP2FA\Admin\Helpers\WP_Helper;
use WP2FA\Freemius\Freemius_Helper;
use WP2FA\Admin\Helpers\File_Writer;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( defined( '\DISABLE_2FA_LOGIN' ) && \DISABLE_2FA_LOGIN ) {
	return;
}

// Useful global constants.
if ( ! defined( 'WP_2FA_VERSION' ) ) {
	define( 'WP_2FA_VERSION', '3.0.1' );
	define( 'WP_2FA_BASE', plugin_basename( __FILE__ ) );
	define( 'WP_2FA_URL', plugin_dir_url( __FILE__ ) );
	define( 'WP_2FA_PATH', WP_PLUGIN_DIR . DIRECTORY_SEPARATOR . dirname( WP_2FA_BASE ) . DIRECTORY_SEPARATOR );
	define( 'WP_2FA_INC', WP_2FA_PATH . 'includes/' );
	define( 'WP_2FA_FILE', __FILE__ );
	define( 'WP_2FA_LOGS_DIR', 'wp-2fa-logs' );

	// Prefix used in usermetas, settings and transients.
	define( 'WP_2FA_PREFIX', 'wp_2fa_' );
	define( 'WP_2FA_POLICY_SETTINGS_NAME', WP_2FA_PREFIX . 'policy' );
	define( 'WP_2FA_SETTINGS_NAME', WP_2FA_PREFIX . 'settings' );
	define( 'WP_2FA_WHITE_LABEL_SETTINGS_NAME', WP_2FA_PREFIX . 'white_label' );
	define( 'WP_2FA_EMAIL_SETTINGS_NAME', WP_2FA_PREFIX . 'email_settings' );

	define( 'WP_2FA_PREFIX_PAGE', 'wp-2fa-' );

	define( 'WP_2FA_TEXTDOMAIN', 'wp-2fa' );
}

if ( ! function_exists( 'wp_2f_is_just_in_time_for_2fa_domain' ) ) {
	/**
	 * Whether it is the just_in_time_error for wp-2fa domains.
	 *
	 * @since 2.9.0
	 *
	 * @param string $status        Status of the error.
	 * @param string $function_name Function name.
	 * @param string $message       Message.
	 *
	 * @return bool
	 */
	function wp_2f_is_just_in_time_for_2fa_domain( $status, string $function_name, string $message ): bool {

		return '_load_textdomain_just_in_time' === $function_name && strpos( $message, '<code>' . WP_2FA_TEXTDOMAIN ) !== false;
	}
}

if ( ! function_exists( 'wp_2fa_trigger_error' ) ) {
	/**
	 * Catches errors which come from the doing_it_wrong() function, WP core does not provide much information about what is really going on and where, this method adds some more information to the error log.
	 *
	 * @param bool   $status - Whether to trigger the error for _doing_it_wrong() calls. Default true.
	 * @param string $function_name - The name of the function that triggered the error (this is the WP function which is not called right, not the real function that actually called it).
	 * @param string $errstr - The WP error string (message).
	 * @param string $version - Since which WP version given error was added.
	 * @param int    $errno - The number of the error (type of the error - that probably never get set by WP and always falls to the default which is E_USER_NOTICE).
	 *
	 * @return bool
	 *
	 * @since 2.9.0
	 */
	function wp_2fa_trigger_error( $status, string $function_name, $errstr, $version, $errno = E_USER_NOTICE ) {

		if ( false === $status ) {
			return $status;
		}

		if ( wp_2f_is_just_in_time_for_2fa_domain( '', $function_name, $errstr ) ) {
			// This error code is not included in error_reporting, so let it fall.
			// through to the standard PHP error handler.
			return false;
		}

		return $status;
	}
}

if ( ! function_exists( 'wp_2fa_action_doing_it_wrong_run' ) ) {
	/**
	 * Action for _doing_it_wrong() calls.
	 *
	 * @since 2.9.0
	 *
	 * @param string $function_name The function that was called.
	 * @param string $message       A message explaining what has been done incorrectly.
	 * @param string $version       The version of WordPress where the message was added.
	 *
	 * @return void
	 */
	function wp_2fa_action_doing_it_wrong_run( $function_name, $message, $version ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.FoundAfterLastUsed

		global $wp_filter;

		$function_name = (string) $function_name;
		$message       = (string) $message;

		if ( ! class_exists( '\QM_Collectors', false ) || ! wp_2f_is_just_in_time_for_2fa_domain( '', $function_name, $message ) ) {
			return;
		}

		$qm_collector_doing_it_wrong = \QM_Collectors::get( 'doing_it_wrong' );
		$current_priority            = $wp_filter['doing_it_wrong_run']->current_priority();

		if ( null === $qm_collector_doing_it_wrong || false === $current_priority ) {
			return;
		}

		switch ( $current_priority ) {
			case 0:
				\remove_action( 'doing_it_wrong_run', array( $qm_collector_doing_it_wrong, 'action_doing_it_wrong_run' ) );
				break;

			case 20:
				\add_action( 'doing_it_wrong_run', array( $qm_collector_doing_it_wrong, 'action_doing_it_wrong_run' ), 10, 3 );
				break;

			default:
				break;
		}
	}
}

\add_action( 'doing_it_wrong_trigger_error', 'wp_2fa_trigger_error', 0, 4 );

\add_action( 'aadvana_trigger_error_doing_it_wrong', 'wp_2fa_trigger_error', 0, 4 );

\add_action( 'doing_it_wrong_run', 'wp_2fa_action_doing_it_wrong_run', 0, 3 );
\add_action( 'doing_it_wrong_run', 'wp_2fa_action_doing_it_wrong_run', 20, 3 );

		// Include files.
		require_once WP_2FA_INC . 'functions/core.php';

		// Require Composer autoloader if it exists.
		if ( file_exists( WP_2FA_PATH . 'vendor/autoload.php' ) ) {
			require_once WP_2FA_PATH . 'vendor/autoload.php';
		}

		// run any required update routines.
		Migration::migrate();

		// Setup_Wizard.
		if ( WP_Helper::is_multisite() ) {
			\add_action( 'network_admin_menu', array( '\WP2FA\Admin\Setup_Wizard', 'network_admin_menus' ), 10 );
			\add_action( 'admin_menu', array( '\WP2FA\Admin\Setup_Wizard', 'admin_menus' ), 10 );
		} else {
			\add_action( 'admin_menu', array( '\WP2FA\Admin\Setup_Wizard', 'admin_menus' ), 10 );
		}

		// Activation/Deactivation.
		\register_activation_hook( WP_2FA_FILE, '\WP2FA\Core\activate' );
		\register_deactivation_hook( WP_2FA_FILE, '\WP2FA\Core\deactivate' );
		// Register our uninstallation hook.
		\register_uninstall_hook( WP_2FA_FILE, '\WP2FA\Core\uninstall' );

		\add_filter( 'plugins_loaded', array( WP2FA::class, 'init' ) );
		\add_action( 'plugins_loaded', array( WP2FA::class, 'add_wizard_actions' ), 10 );



if ( ! defined( File_Writer::SECRET_NAME ) ) {
	define( File_Writer::SECRET_NAME, WP2FA::get_secret_key() );

	define( 'WP2FA_SECRET_IS_IN_DB', true );
}

// @free:start
if ( ! function_exists( 'wp2fa_free_on_plugin_activation' ) ) {
	/**
	 * Takes care of deactivation of the premium plugin when the free plugin is activated.
	 *
	 * Note: This code MUST NOT be present in the premium version an is removed automatically during the build process.
	 *
	 * @since 2.0.0
	 */
	function wp2fa_free_on_plugin_activation() {
		$premium_version_slug = 'wp-2fa-premium/wp-2fa.php';
		if ( is_plugin_active( $premium_version_slug ) ) {
			deactivate_plugins( $premium_version_slug, true );
		}
		check_ssl();
	}

	\register_activation_hook( __FILE__, 'wp2fa_free_on_plugin_activation' );
}
// @free:end

/*
 * Clears the config cache from the DB
 *
 * @return void
 *
 * @since 2.2.0
 */
\add_action(
	'upgrader_process_complete',
	function () {
		delete_transient( 'wp_2fa_config_file_hash' );
	},
	10,
	2
);

if ( ! function_exists( 'check_ssl' ) ) {
	/**
	 * Checks if the required library is installed and cancels the process if not.
	 *
	 * @return void
	 *
	 * @since 2.2.0
	 */
	function check_ssl() {
		if ( ! \WP2FA\Authenticator\Open_SSL::is_ssl_available() ) {
			$html = '<div class="updated notice is-dismissible">
				<p>' . \esc_html__( 'This plugin requires OpenSSL. Contact your web host or website administrator so they can enable OpenSSL. Re-activate the plugin once the library has been enabled.', 'wp-2fa' )
				. '</p>
			</div>';

			echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped

			exit();
		}
	}
}

if ( \PHP_VERSION_ID < 80000 && ! \interface_exists( 'Stringable' ) ) {
	// phpcs:ignore Universal.Files.SeparateFunctionsFromOO.Mixed
	interface Stringable {
		/**
		 * Mockup function for PHP versions lower than 8.
		 *
		 * @return string
		 */
		public function __toString();
	}
}

if ( ! function_exists( 'str_starts_with' ) ) {
	/**
	 * PHP lower than 8 is missing that function but it required in the newer versions of our plugin.
	 *
	 * @param string $haystack - The string to search in.
	 * @param string $needle - The needle to search for.
	 *
	 * @return bool
	 *
	 * @since 2.6.4
	 */
	function str_starts_with( $haystack, $needle ): bool {
		if ( '' === $needle ) {
			return true;
		}

		return 0 === strpos( $haystack, $needle );
	}
}
