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File Content: `class-secupress-scan-php-404.php`

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

/**
 * PHP 404 Class
 *
 * @package SecuPress
 * @subpackage SecuPress_Scan
 * @since 1.4
 */
class SecuPress_Scan_Php_404 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 site is allowing 404 on PHP files.', 'secupress' );
		$this->more  = __( 'Do not let attackers find hidden PHP files by guessing it, ban them!', 'secupress' );
		$this->more_fix = sprintf(
			__( 'Activate the option %1$s in the %2$s module.', 'secupress' ),
			'<em>' . __( 'Block 404 on .php', 'secupress' ) . '</em>',
			'<a href="' . esc_url( secupress_admin_url( 'modules', 'firewall' ) ) . '#row-bbq-url-content_ban-404-php">' . __( 'Firewall', 'secupress' ) . '</a>'
		);
	}


	/**
	 * 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 ) {
		/** Translators: 1 is the name of a protection, 2 is the name of a module. */
		$activate_protection_message = sprintf( __( 'But you can activate the %1$s protection from the module %2$s.', 'secupress' ),
			'<strong>' . __( 'Block 404 on .php', 'secupress' ) . '</strong>',
			'<a target="_blank" href="' . esc_url( secupress_admin_url( 'modules', 'firewall' ) ) . '#row-bbq-url-content_ban-404-php">' . __( 'Firewall', 'secupress' ) . '</a>'
		);

		$messages = array(
			// "good"
			0   => __( 'You are currently blocking 404 requests on .php files.', 'secupress' ),
			1   => __( 'Protection activated', 'secupress' ),
			// "warning"
			100 => __( 'Unable to determine if your homepage is blocking 404 on .php files.', 'secupress' ) . ' ' . $activate_protection_message,
			// "bad"
			200 => __( 'Your website should block <strong>404 on .php files</strong>.', 'secupress' ),
		);

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

		return $messages;
	}


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

	/**
	 * Get the documentation URL.
	 *
	 * @since 1.0
	 *
	 * @return (string)
	 */
	public static function get_docs_url() {
		return __( 'https://docs.secupress.me/article/150-ban-404-on-php-files', 'secupress' );
	}


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

	/**
	 * Scan for flaw(s).
	 *
	 * @since 1.0
	 *
	 * @return (array) The scan results.
	 */
	public function scan() {
		$response = wp_remote_get( home_url( 'sp-' . secupress_generate_key( 5 ) . '.php' ), $this->get_default_request_args() );

		if ( ! is_wp_error( $response ) ) {

			if ( 200 === wp_remote_retrieve_response_code( $response ) ) {
				// "bad"
				$this->add_message( 200 );
			} else {
				// "good"
				$this->add_message( 0 );
			}
		}

		// "good"
		$this->maybe_set_status( 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() {
		// Activate.
		secupress_activate_submodule( 'firewall', 'ban-404-php' );

		// "good"
		$this->add_fix_message( 1 );

		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

File Content: class-secupress-scan-php-404.php

File Content: `class-secupress-scan-php-404.php`