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File Content: `class-secupress-scan-directory-listing.php`

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

/**
 * Directory Listing scan class.
 *
 * @package SecuPress
 * @subpackage SecuPress_Scan
 * @since 1.0
 */
class SecuPress_Scan_Directory_Listing 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() {
		global $is_apache, $is_nginx, $is_iis7;

		$this->title = __( 'Check if your server lists the files in a directory (known as Directory Listing).', 'secupress' );
		$this->more  = __( 'Without the appropriate protection anybody could browse your site’s files. While browsing some of your files might not be a security risk, most of them are sensitive.', 'secupress' );
		$this->more_fix = sprintf(
			__( 'Activate the %1$s protection from the module %2$s.', 'secupress' ),
			'<strong>' . __( 'Directory Listing', 'secupress' ) . '</strong>',
			'<a href="' . esc_url( secupress_admin_url( 'modules', 'sensitive-data' ) ) . '#row-content-protect_directory-listing">' . __( 'Sensitive Data', 'secupress' ) . '</a>'
		);

		if ( ! $is_apache && ! $is_nginx && ! $is_iis7 ) {
			$this->more_fix = static::get_messages( 301 );
			$this->fixable  = false;
			return;
		}
	}


	/**
	 * 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 ) {
		global $is_apache;
		$config_file = $is_apache ? '.htaccess' : 'web.config';
		/** 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>' . __( 'Directory Listing', 'secupress' ) . '</strong>',
			'<a target="_blank" href="' . esc_url( secupress_admin_url( 'modules', 'sensitive-data' ) ) . '#row-content-protect_directory-listing">' . __( 'Sensitive Data', 'secupress' ) . '</a>'
		);

		$messages = array(
			// "good"
			0   => __( 'Your site does not reveal the files list.', 'secupress' ),
			/** Translators: %s is a file name. */
			1   => sprintf( __( 'The rules forbidding access to directory listing have been successfully added to your %s file.', 'secupress' ), "<code>$config_file</code>" ),
			// "warning"
			/** Translators: %s is a URL. */
			100 => sprintf( __( 'Unable to determine the status of %1$s to read the directory listing.', 'secupress' ), '%s' ) . ' ' . $activate_protection_message,
			// "bad"
			/** Translators: %s is a URL. */
			200 => __( '%s (for example) should not be accessible to anyone because of directory listing.', 'secupress' ),
			// "cantfix"
			/** Translators: 1 is a file name, 2 is some code. */
			300 => sprintf( __( 'Your server runs <strong>Nginx</strong>, the directory listing disclosure cannot be fixed automatically but you can do it yourself by adding the following code to your %1$s file: %2$s', 'secupress' ), '<code>nginx.conf</code>', '%s' ),
			301 => __( 'Your server runs an unrecognized system. The directory listing disclosure cannot be fixed automatically.', 'secupress' ),
			/** Translators: 1 is a file name, 2 is some code. */
			302 => sprintf( __( 'Your %1$s file is not writable. Please add the following lines at the beginning of the file: %2$s', 'secupress' ), "<code>$config_file</code>", '%s' ),
			/** Translators: 1 is a file name, 2 is a tag name, 3 is a folder path (kind of), 4 is some code. */
			303 => sprintf( __( 'Your %1$s file is not writable. Please remove any previous %2$s tag and add the following lines inside the tags hierarchy %3$s (create it if does not exist): %4$s', 'secupress' ), "<code>$config_file</code>", '%1$s', '%2$s', '%3$s' ),
		);

		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/126-index-listing-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();
		}

		$upload_dir = wp_upload_dir();
		$base_url   = user_trailingslashit( $upload_dir['baseurl'] );
		$response   = wp_remote_get( $base_url, $this->get_default_request_args() );

		if ( ! is_wp_error( $response ) ) {

			if ( 200 === wp_remote_retrieve_response_code( $response ) ) {
				$body = trim( wp_remote_retrieve_body( $response ) );

				if ( strlen( $body ) > 25 ) {
					// "bad"
					$this->add_message( 200, array( '<code>' . $base_url . '</code>' ) );

					if ( ! $this->fixable ) {
						$this->add_pre_fix_message( 301 );
					}
				}
			}
		}

		// "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() {
		global $is_apache, $is_nginx, $is_iis7;

		if ( $is_apache ) {
			$this->fix_apache();
		} elseif ( $is_iis7 ) {
			$this->fix_iis7();
		} elseif ( $is_nginx ) {
			$this->fix_nginx();
		}

		// "good"
		$this->maybe_set_fix_status( 0 );

		return parent::fix();
	}


	/**
	 * Fix for Apache system.
	 *
	 * @since 1.0
	 */
	protected function fix_apache() {
		global $wp_settings_errors;

		secupress_activate_submodule( 'sensitive-data', 'directory-listing' );

		// Got error?
		$last_error = is_array( $wp_settings_errors ) && $wp_settings_errors ? end( $wp_settings_errors ) : false;

		if ( $last_error && 'general' === $last_error['setting'] && 'apache_manual_edit' === $last_error['code'] ) {
			$rules = static::get_rules_from_error( $last_error );
			// "cantfix"
			$this->add_fix_message( 302, array( $rules ) );
			array_pop( $wp_settings_errors );
			return;
		}

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


	/**
	 * Fix for IIS7 system.
	 *
	 * @since 1.0
	 */
	protected function fix_iis7() {
		global $wp_settings_errors;

		secupress_activate_submodule( 'sensitive-data', 'directory-listing' );

		// Got error?
		$last_error = is_array( $wp_settings_errors ) && $wp_settings_errors ? end( $wp_settings_errors ) : false;

		if ( $last_error && 'general' === $last_error['setting'] && 'iis7_manual_edit' === $last_error['code'] ) {
			$rules     = static::get_rules_from_error( $last_error );
			$path      = static::get_code_tag_from_error( $last_error, 'secupress-iis7-path' );
			$node_type = static::get_code_tag_from_error( $last_error, 'secupress-iis7-node-type' );
			// "cantfix"
			$this->add_fix_message( 303, array( $node_type, $path, $rules ) );
			array_pop( $wp_settings_errors );
			return;
		}

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


	/**
	 * Fix for nginx system.
	 *
	 * @since 1.0
	 */
	protected function fix_nginx() {
		global $wp_settings_errors;

		secupress_activate_submodule( 'sensitive-data', 'directory-listing' );

		// Get the error.
		$last_error = is_array( $wp_settings_errors ) && $wp_settings_errors ? end( $wp_settings_errors ) : false;
		$rules      = '<code>Error</code>';

		if ( $last_error && 'general' === $last_error['setting'] && 'nginx_manual_edit' === $last_error['code'] ) {
			$rules = static::get_rules_from_error( $last_error );
			array_pop( $wp_settings_errors );
		}

		// "cantfix"
		$this->add_fix_message( 300, array( $rules ) );
	}
}

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-directory-listing.php

File Content: `class-secupress-scan-directory-listing.php`