459 lines
13 KiB
PHP
459 lines
13 KiB
PHP
<?php
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/**
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* Class for testing automatic updates in the WordPress code.
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*
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* @package WordPress
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* @subpackage Site_Health
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* @since 5.2.0
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*/
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#[AllowDynamicProperties]
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class WP_Site_Health_Auto_Updates {
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/**
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* WP_Site_Health_Auto_Updates constructor.
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*
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* @since 5.2.0
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*/
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public function __construct() {
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require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
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}
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/**
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* Runs tests to determine if auto-updates can run.
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*
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* @since 5.2.0
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*
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* @return array The test results.
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*/
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public function run_tests() {
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$tests = array(
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$this->test_constants( 'WP_AUTO_UPDATE_CORE', array( true, 'beta', 'rc', 'development', 'branch-development', 'minor' ) ),
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$this->test_wp_version_check_attached(),
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$this->test_filters_automatic_updater_disabled(),
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$this->test_wp_automatic_updates_disabled(),
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$this->test_if_failed_update(),
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$this->test_vcs_abspath(),
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$this->test_check_wp_filesystem_method(),
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$this->test_all_files_writable(),
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$this->test_accepts_dev_updates(),
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$this->test_accepts_minor_updates(),
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);
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$tests = array_filter( $tests );
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$tests = array_map(
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static function( $test ) {
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$test = (object) $test;
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if ( empty( $test->severity ) ) {
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$test->severity = 'warning';
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}
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return $test;
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},
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$tests
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);
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return $tests;
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}
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/**
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* Tests if auto-updates related constants are set correctly.
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*
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* @since 5.2.0
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* @since 5.5.1 The `$value` parameter can accept an array.
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*
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* @param string $constant The name of the constant to check.
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* @param bool|string|array $value The value that the constant should be, if set,
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* or an array of acceptable values.
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* @return array The test results.
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*/
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public function test_constants( $constant, $value ) {
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$acceptable_values = (array) $value;
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if ( defined( $constant ) && ! in_array( constant( $constant ), $acceptable_values, true ) ) {
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return array(
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'description' => sprintf(
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/* translators: 1: Name of the constant used. 2: Value of the constant used. */
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__( 'The %1$s constant is defined as %2$s' ),
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"<code>$constant</code>",
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'<code>' . esc_html( var_export( constant( $constant ), true ) ) . '</code>'
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),
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'severity' => 'fail',
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);
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}
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}
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/**
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* Checks if updates are intercepted by a filter.
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*
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* @since 5.2.0
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*
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* @return array The test results.
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*/
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public function test_wp_version_check_attached() {
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if ( ( ! is_multisite() || is_main_site() && is_network_admin() )
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&& ! has_filter( 'wp_version_check', 'wp_version_check' )
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) {
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return array(
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'description' => sprintf(
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/* translators: %s: Name of the filter used. */
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__( 'A plugin has prevented updates by disabling %s.' ),
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'<code>wp_version_check()</code>'
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),
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'severity' => 'fail',
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);
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}
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}
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/**
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* Checks if automatic updates are disabled by a filter.
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*
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* @since 5.2.0
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*
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* @return array The test results.
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*/
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public function test_filters_automatic_updater_disabled() {
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/** This filter is documented in wp-admin/includes/class-wp-automatic-updater.php */
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if ( apply_filters( 'automatic_updater_disabled', false ) ) {
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return array(
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'description' => sprintf(
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/* translators: %s: Name of the filter used. */
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__( 'The %s filter is enabled.' ),
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'<code>automatic_updater_disabled</code>'
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),
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'severity' => 'fail',
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);
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}
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}
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/**
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* Checks if automatic updates are disabled.
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*
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* @since 5.3.0
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*
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* @return array|false The test results. False if auto-updates are enabled.
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*/
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public function test_wp_automatic_updates_disabled() {
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if ( ! class_exists( 'WP_Automatic_Updater' ) ) {
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require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
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}
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$auto_updates = new WP_Automatic_Updater();
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if ( ! $auto_updates->is_disabled() ) {
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return false;
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}
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return array(
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'description' => __( 'All automatic updates are disabled.' ),
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'severity' => 'fail',
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);
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}
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/**
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* Checks if automatic updates have tried to run, but failed, previously.
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*
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* @since 5.2.0
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*
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* @return array|false The test results. False if the auto-updates failed.
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*/
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public function test_if_failed_update() {
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$failed = get_site_option( 'auto_core_update_failed' );
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if ( ! $failed ) {
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return false;
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}
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if ( ! empty( $failed['critical'] ) ) {
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$description = __( 'A previous automatic background update ended with a critical failure, so updates are now disabled.' );
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$description .= ' ' . __( 'You would have received an email because of this.' );
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$description .= ' ' . __( "When you've been able to update using the \"Update now\" button on Dashboard > Updates, this error will be cleared for future update attempts." );
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$description .= ' ' . sprintf(
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/* translators: %s: Code of error shown. */
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__( 'The error code was %s.' ),
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'<code>' . $failed['error_code'] . '</code>'
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);
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return array(
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'description' => $description,
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'severity' => 'warning',
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);
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}
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$description = __( 'A previous automatic background update could not occur.' );
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if ( empty( $failed['retry'] ) ) {
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$description .= ' ' . __( 'You would have received an email because of this.' );
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}
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$description .= ' ' . __( 'Another attempt will be made with the next release.' );
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$description .= ' ' . sprintf(
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/* translators: %s: Code of error shown. */
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__( 'The error code was %s.' ),
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'<code>' . $failed['error_code'] . '</code>'
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);
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return array(
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'description' => $description,
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'severity' => 'warning',
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);
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}
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/**
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* Checks if WordPress is controlled by a VCS (Git, Subversion etc).
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*
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* @since 5.2.0
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*
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* @return array The test results.
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*/
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public function test_vcs_abspath() {
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$context_dirs = array( ABSPATH );
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$vcs_dirs = array( '.svn', '.git', '.hg', '.bzr' );
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$check_dirs = array();
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foreach ( $context_dirs as $context_dir ) {
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// Walk up from $context_dir to the root.
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do {
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$check_dirs[] = $context_dir;
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// Once we've hit '/' or 'C:\', we need to stop. dirname will keep returning the input here.
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if ( dirname( $context_dir ) === $context_dir ) {
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break;
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}
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// Continue one level at a time.
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} while ( $context_dir = dirname( $context_dir ) );
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}
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$check_dirs = array_unique( $check_dirs );
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// Search all directories we've found for evidence of version control.
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foreach ( $vcs_dirs as $vcs_dir ) {
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foreach ( $check_dirs as $check_dir ) {
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// phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition,Squiz.PHP.DisallowMultipleAssignments
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if ( $checkout = @is_dir( rtrim( $check_dir, '\\/' ) . "/$vcs_dir" ) ) {
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break 2;
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}
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}
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}
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/** This filter is documented in wp-admin/includes/class-wp-automatic-updater.php */
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if ( $checkout && ! apply_filters( 'automatic_updates_is_vcs_checkout', true, ABSPATH ) ) {
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return array(
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'description' => sprintf(
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/* translators: 1: Folder name. 2: Version control directory. 3: Filter name. */
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__( 'The folder %1$s was detected as being under version control (%2$s), but the %3$s filter is allowing updates.' ),
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'<code>' . $check_dir . '</code>',
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"<code>$vcs_dir</code>",
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'<code>automatic_updates_is_vcs_checkout</code>'
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),
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'severity' => 'info',
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);
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}
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if ( $checkout ) {
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return array(
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'description' => sprintf(
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/* translators: 1: Folder name. 2: Version control directory. */
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__( 'The folder %1$s was detected as being under version control (%2$s).' ),
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'<code>' . $check_dir . '</code>',
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"<code>$vcs_dir</code>"
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),
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'severity' => 'warning',
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);
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}
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return array(
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'description' => __( 'No version control systems were detected.' ),
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'severity' => 'pass',
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);
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}
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/**
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* Checks if we can access files without providing credentials.
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*
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* @since 5.2.0
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*
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* @return array The test results.
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*/
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public function test_check_wp_filesystem_method() {
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// Make sure the `request_filesystem_credentials()` function is available during our REST API call.
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if ( ! function_exists( 'request_filesystem_credentials' ) ) {
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require_once ABSPATH . '/wp-admin/includes/file.php';
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}
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$skin = new Automatic_Upgrader_Skin;
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$success = $skin->request_filesystem_credentials( false, ABSPATH );
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if ( ! $success ) {
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$description = __( 'Your installation of WordPress prompts for FTP credentials to perform updates.' );
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$description .= ' ' . __( '(Your site is performing updates over FTP due to file ownership. Talk to your hosting company.)' );
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return array(
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'description' => $description,
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'severity' => 'fail',
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);
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}
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return array(
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'description' => __( 'Your installation of WordPress does not require FTP credentials to perform updates.' ),
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'severity' => 'pass',
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);
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}
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/**
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* Checks if core files are writable by the web user/group.
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*
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* @since 5.2.0
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*
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* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
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*
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* @return array|false The test results. False if they're not writeable.
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*/
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public function test_all_files_writable() {
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global $wp_filesystem;
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require ABSPATH . WPINC . '/version.php'; // $wp_version; // x.y.z
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$skin = new Automatic_Upgrader_Skin;
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$success = $skin->request_filesystem_credentials( false, ABSPATH );
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if ( ! $success ) {
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return false;
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}
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WP_Filesystem();
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if ( 'direct' !== $wp_filesystem->method ) {
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return false;
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}
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// Make sure the `get_core_checksums()` function is available during our REST API call.
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if ( ! function_exists( 'get_core_checksums' ) ) {
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require_once ABSPATH . '/wp-admin/includes/update.php';
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}
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$checksums = get_core_checksums( $wp_version, 'en_US' );
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$dev = ( false !== strpos( $wp_version, '-' ) );
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// Get the last stable version's files and test against that.
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if ( ! $checksums && $dev ) {
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$checksums = get_core_checksums( (float) $wp_version - 0.1, 'en_US' );
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}
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// There aren't always checksums for development releases, so just skip the test if we still can't find any.
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if ( ! $checksums && $dev ) {
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return false;
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}
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if ( ! $checksums ) {
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$description = sprintf(
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/* translators: %s: WordPress version. */
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__( "Couldn't retrieve a list of the checksums for WordPress %s." ),
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$wp_version
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);
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$description .= ' ' . __( 'This could mean that connections are failing to WordPress.org.' );
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return array(
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'description' => $description,
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'severity' => 'warning',
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);
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}
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$unwritable_files = array();
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foreach ( array_keys( $checksums ) as $file ) {
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if ( 'wp-content' === substr( $file, 0, 10 ) ) {
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continue;
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}
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if ( ! file_exists( ABSPATH . $file ) ) {
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continue;
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}
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if ( ! is_writable( ABSPATH . $file ) ) {
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$unwritable_files[] = $file;
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}
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}
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if ( $unwritable_files ) {
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if ( count( $unwritable_files ) > 20 ) {
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$unwritable_files = array_slice( $unwritable_files, 0, 20 );
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$unwritable_files[] = '...';
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}
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return array(
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'description' => __( 'Some files are not writable by WordPress:' ) . ' <ul><li>' . implode( '</li><li>', $unwritable_files ) . '</li></ul>',
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'severity' => 'fail',
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);
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} else {
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return array(
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'description' => __( 'All of your WordPress files are writable.' ),
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'severity' => 'pass',
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);
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}
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}
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/**
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* Checks if the install is using a development branch and can use nightly packages.
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*
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* @since 5.2.0
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*
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* @return array|false The test results. False if it isn't a development version.
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*/
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public function test_accepts_dev_updates() {
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require ABSPATH . WPINC . '/version.php'; // $wp_version; // x.y.z
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// Only for dev versions.
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if ( false === strpos( $wp_version, '-' ) ) {
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return false;
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}
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if ( defined( 'WP_AUTO_UPDATE_CORE' ) && ( 'minor' === WP_AUTO_UPDATE_CORE || false === WP_AUTO_UPDATE_CORE ) ) {
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return array(
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'description' => sprintf(
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/* translators: %s: Name of the constant used. */
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__( 'WordPress development updates are blocked by the %s constant.' ),
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'<code>WP_AUTO_UPDATE_CORE</code>'
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),
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'severity' => 'fail',
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);
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}
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/** This filter is documented in wp-admin/includes/class-core-upgrader.php */
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if ( ! apply_filters( 'allow_dev_auto_core_updates', $wp_version ) ) {
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return array(
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'description' => sprintf(
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/* translators: %s: Name of the filter used. */
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__( 'WordPress development updates are blocked by the %s filter.' ),
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'<code>allow_dev_auto_core_updates</code>'
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),
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'severity' => 'fail',
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);
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}
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}
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/**
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* Checks if the site supports automatic minor updates.
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*
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* @since 5.2.0
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*
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* @return array The test results.
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*/
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public function test_accepts_minor_updates() {
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if ( defined( 'WP_AUTO_UPDATE_CORE' ) && false === WP_AUTO_UPDATE_CORE ) {
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return array(
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'description' => sprintf(
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/* translators: %s: Name of the constant used. */
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__( 'WordPress security and maintenance releases are blocked by %s.' ),
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"<code>define( 'WP_AUTO_UPDATE_CORE', false );</code>"
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),
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'severity' => 'fail',
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);
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}
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/** This filter is documented in wp-admin/includes/class-core-upgrader.php */
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if ( ! apply_filters( 'allow_minor_auto_core_updates', true ) ) {
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return array(
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'description' => sprintf(
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/* translators: %s: Name of the filter used. */
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__( 'WordPress security and maintenance releases are blocked by the %s filter.' ),
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'<code>allow_minor_auto_core_updates</code>'
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),
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'severity' => 'fail',
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);
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}
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}
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}
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