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File Content: class-secupress-scan-login-errors-disclose.php

<?php
defined( 'ABSPATH' ) or die( 'Something went wrong.' );

/**
 * Login Errors Disclose scan class.
 *
 * @package SecuPress
 * @subpackage SecuPress_Scan
 * @since 1.0
 */
class SecuPress_Scan_Login_Errors_Disclose extends SecuPress_Scan implements SecuPress_Scan_Interface {

/** Constants. ============================================================================== */

/**
	 * Class version.
	 *
	 * @var (string)
	 */
	const VERSION = '1.2';

/** Properties. ============================================================================= */

/**
	 * The reference to the *Singleton* instance of this class.
	 *
	 * @var (object)
	 */
	protected static $_instance;

/** Init and messages. ====================================================================== */

/**
	 * Init.
	 *
	 * @since 1.0
	 */
	protected function init() {
		$this->title    = __( 'Check if your WordPress lists the some login errors.', 'secupress' );
		$this->more     = __( 'Error messages displayed on the login page are a useful information for an attacker: they should not be displayed, or at least, should be less specific.', 'secupress' );
		$this->more_fix = __( 'Hide errors on login page to avoid being read by attackers.', 'secupress' );
	}

/**
	 * Get messages.
	 *
	 * @since 1.0
	 *
	 * @param (int) $message_id A message ID.
	 *
	 * @return (string|array) A message if a message ID is provided. An array containing all messages otherwise.
	 */
	public static function get_messages( $message_id = null ) {
		$messages = array(
			// "good"
			0 => __( 'You are currently not displaying login errors.', 'secupress' ),
			1 => __( 'Protection activated', 'secupress' ),
			// "bad"
			200 => __( 'Login errors should not be displayed.', 'secupress' ),
		);

if ( isset( $message_id ) ) {
			return isset( $messages[ $message_id ] ) ? $messages[ $message_id ] : __( 'Unknown message', 'secupress' );
		}

return $messages;
	}

/** Getters. ================================================================================ */

/**
	 * Get the documentation URL.
	 *
	 * @since 1.2.3
	 *
	 * @return (string)
	 */
	public static function get_docs_url() {
		return __( 'https://docs.secupress.me/article/129-login-error-message-scan', 'secupress' );
	}

/** Scan. =================================================================================== */

/**
	 * Scan for flaw(s).
	 *
	 * @since 1.0
	 *
	 * @return (array) The scan results.
	 */
	public function scan() {

$activated = $this->filter_scanner( __CLASS__ );
		if ( true === $activated ) {
			$this->add_message( 0 );
			return parent::scan();
		}

$messages = secupress_login_errors_disclose_get_messages( false );
		$messages = '	' . implode( " \n	", $messages ) . " \n";
		/** This filter is documented in wp-login.php */
		$messages = apply_filters( 'login_errors', $messages );

$pattern = secupress_login_errors_disclose_get_messages();
		$pattern = '@\s(' . implode( '|', $pattern ) . ') \n@';

if ( preg_match( $pattern, $messages ) ) {
			// "bad"
			$this->add_message( 200 );
		} else {
			// "good"
			$this->add_message( 0 );
		}

return parent::scan();
	}

/** Fix. ==================================================================================== */

/**
	 * Try to fix the flaw(s).
	 *
	 * @since 1.4.5
	 *
	 * @return (array) The fix results.
	 */
	public function need_manual_fix() {
		return [ 'fix' => 'fix' ];
	}

/**
	 * Get an array containing ALL the forms that would fix the scan if it requires user action.
	 *
	 * @since 1.4.5
	 *
	 * @return (array) An array of HTML templates (form contents most of the time).
	 */
	protected function get_fix_action_template_parts() {
		return [ 'fix' => '&nbsp;' ];
	}

/**
	 * Try to fix the flaw(s) after requiring user action.
	 *
	 * @since 1.4.5
	 *
	 * @return (array) The fix results.
	 */
	public function manual_fix() {
		if ( $this->has_fix_action_part( 'fix' ) ) {
			$this->fix();
		}
		// "good"
		$this->add_fix_message( 1 );
		return parent::manual_fix();
	}

/**
	 * Try to fix the flaw(s).
	 *
	 * @since 1.0
	 *
	 * @return (array) The fix results.
	 */
	public function fix() {
		$messages = secupress_login_errors_disclose_get_messages( false );
		$messages = '	' . implode( " \n	", $messages ) . " \n";
		/** This filter is documented in wp-login.php */
		$messages = apply_filters( 'login_errors', $messages );

$pattern = secupress_login_errors_disclose_get_messages();
		$pattern = '@\s(' . implode( '|', $pattern ) . ') \n@';

if ( preg_match( $pattern, $messages ) ) {

secupress_activate_submodule( 'discloses', 'login-errors-disclose' );

// "good"
			$this->add_fix_message( 1 );
		} else {
			// "good"
			$this->add_fix_message( 0 );
		}

return parent::fix();
	}
}

Name	Size	Permission
class-secupress-scan-admin-user.php	11163 bytes	0644
class-secupress-scan-auto-update.php	8307 bytes	0644
class-secupress-scan-bad-config-files.php	6820 bytes	0644
class-secupress-scan-bad-file-extensions.php	10841 bytes	0644
class-secupress-scan-bad-old-files.php	5834 bytes	0644
class-secupress-scan-bad-old-plugins.php	28686 bytes	0644
class-secupress-scan-bad-request-methods.php	5590 bytes	0644
class-secupress-scan-bad-url-access.php	9461 bytes	0644
class-secupress-scan-bad-user-agent.php	5424 bytes	0644
class-secupress-scan-bad-usernames.php	5640 bytes	0644
class-secupress-scan-bad-vuln-plugins.php	8579 bytes	0644
class-secupress-scan-chmods.php	10942 bytes	0644
class-secupress-scan-core-update.php	6257 bytes	0644
class-secupress-scan-db-prefix.php	9916 bytes	0644
class-secupress-scan-directory-listing.php	9202 bytes	0644
class-secupress-scan-discloses.php	18508 bytes	0644
class-secupress-scan-easy-login.php	5278 bytes	0644
class-secupress-scan-https.php	8735 bytes	0644
class-secupress-scan-inactive-plugins-themes.php	21581 bytes	0644
class-secupress-scan-login-errors-disclose.php	4833 bytes	0644
class-secupress-scan-passwords-strength.php	6194 bytes	0644
class-secupress-scan-php-404.php	4768 bytes	0644
class-secupress-scan-php-disclosure.php	9027 bytes	0644
class-secupress-scan-phpversion.php	4316 bytes	0644
class-secupress-scan-plugins-update.php	7140 bytes	0644
class-secupress-scan-readme-discloses.php	10676 bytes	0644
class-secupress-scan-salt-keys.php	7316 bytes	0644
class-secupress-scan-shellshock.php	7317 bytes	0644
class-secupress-scan-sqli.php	5034 bytes	0644
class-secupress-scan-subscription.php	10080 bytes	0644
class-secupress-scan-themes-update.php	7065 bytes	0644
class-secupress-scan-woocommerce-discloses.php	7260 bytes	0644
class-secupress-scan-wp-config.php	12860 bytes	0644
class-secupress-scan-wpml-discloses.php	7190 bytes	0644
class-secupress-scan-wporg.php	3714 bytes	0644
class-secupress-scan.php	34265 bytes	0644