359 lines
9.6 KiB
PHP
359 lines
9.6 KiB
PHP
<?php
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namespace Activitypub;
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use WP_Error;
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use Activitypub\Webfinger;
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use function Activitypub\get_plugin_version;
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use function Activitypub\get_webfinger_resource;
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/**
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* ActivityPub Health_Check Class
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*
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* @author Matthias Pfefferle
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*/
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class Health_Check {
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/**
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* Initialize health checks
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*
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* @return void
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*/
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public static function init() {
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\add_filter( 'site_status_tests', array( self::class, 'add_tests' ) );
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\add_filter( 'debug_information', array( self::class, 'debug_information' ) );
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}
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public static function add_tests( $tests ) {
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$tests['direct']['activitypub_test_author_url'] = array(
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'label' => \__( 'Author URL test', 'activitypub' ),
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'test' => array( self::class, 'test_author_url' ),
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);
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$tests['direct']['activitypub_test_webfinger'] = array(
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'label' => __( 'WebFinger Test', 'activitypub' ),
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'test' => array( self::class, 'test_webfinger' ),
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);
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$tests['direct']['activitypub_test_system_cron'] = array(
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'label' => __( 'System Cron Test', 'activitypub' ),
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'test' => array( self::class, 'test_system_cron' ),
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);
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return $tests;
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}
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/**
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* Author URL tests
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*
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* @return array
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*/
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public static function test_author_url() {
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$result = array(
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'label' => \__( 'Author URL accessible', 'activitypub' ),
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'status' => 'good',
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'badge' => array(
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'label' => \__( 'ActivityPub', 'activitypub' ),
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'color' => 'green',
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),
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'description' => \sprintf(
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'<p>%s</p>',
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\__( 'Your author URL is accessible and supports the required "Accept" header.', 'activitypub' )
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),
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'actions' => '',
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'test' => 'test_author_url',
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);
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$check = self::is_author_url_accessible();
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if ( true === $check ) {
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return $result;
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}
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$result['status'] = 'critical';
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$result['label'] = \__( 'Author URL is not accessible', 'activitypub' );
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$result['badge']['color'] = 'red';
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$result['description'] = \sprintf(
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'<p>%s</p>',
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$check->get_error_message()
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);
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return $result;
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}
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/**
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* System Cron tests
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*
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* @return array
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*/
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public static function test_system_cron() {
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$result = array(
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'label' => \__( 'System Task Scheduler configured', 'activitypub' ),
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'status' => 'good',
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'badge' => array(
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'label' => \__( 'ActivityPub', 'activitypub' ),
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'color' => 'green',
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),
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'description' => \sprintf(
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'<p>%s</p>',
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\esc_html__( 'You seem to use the System Task Scheduler to process WP_Cron tasks.', 'activitypub' )
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),
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'actions' => '',
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'test' => 'test_system_cron',
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);
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if ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) {
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return $result;
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}
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$result['status'] = 'recommended';
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$result['label'] = \__( 'System Task Scheduler not configured', 'activitypub' );
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$result['badge']['color'] = 'orange';
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$result['description'] = \sprintf(
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'<p>%s</p>',
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\__( 'It is highly recommended to use your Systems Task Scheduler instead of the default <code>WP_Cron</code> setup. For further informations, check the "<a href="https://developer.wordpress.org/plugins/cron/hooking-wp-cron-into-the-system-task-scheduler/" target="_blank">Hooking WP-Cron Into the System Task Scheduler</a>" from the Plugin Handbook.', 'activitypub' )
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);
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return $result;
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}
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/**
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* WebFinger tests
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*
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* @return array
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*/
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public static function test_webfinger() {
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$result = array(
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'label' => \__( 'WebFinger endpoint', 'activitypub' ),
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'status' => 'good',
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'badge' => array(
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'label' => \__( 'ActivityPub', 'activitypub' ),
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'color' => 'green',
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),
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'description' => \sprintf(
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'<p>%s</p>',
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\__( 'Your WebFinger endpoint is accessible and returns the correct information.', 'activitypub' )
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),
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'actions' => '',
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'test' => 'test_webfinger',
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);
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$check = self::is_webfinger_endpoint_accessible();
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if ( true === $check ) {
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return $result;
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}
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$result['status'] = 'critical';
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$result['label'] = \__( 'WebFinger endpoint is not accessible', 'activitypub' );
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$result['badge']['color'] = 'red';
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$result['description'] = \sprintf(
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'<p>%s</p>',
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$check->get_error_message()
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);
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return $result;
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}
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/**
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* Check if `author_posts_url` is accessible and that request returns correct JSON
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*
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* @return boolean|WP_Error
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*/
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public static function is_author_url_accessible() {
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$user = \wp_get_current_user();
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$author_url = \get_author_posts_url( $user->ID );
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$reference_author_url = self::get_author_posts_url( $user->ID, $user->user_nicename );
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// check for "author" in URL
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if ( $author_url !== $reference_author_url ) {
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return new WP_Error(
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'author_url_not_accessible',
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\sprintf(
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// translators: %s: Author URL
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\__(
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'Your author URL <code>%s</code> was replaced, this is often done by plugins.',
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'activitypub'
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),
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$author_url
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)
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);
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}
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// try to access author URL
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$response = \wp_remote_get(
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$author_url,
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array(
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'headers' => array( 'Accept' => 'application/activity+json' ),
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'redirection' => 0,
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)
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);
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if ( \is_wp_error( $response ) ) {
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return new WP_Error(
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'author_url_not_accessible',
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\sprintf(
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// translators: %s: Author URL
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\__(
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'Your author URL <code>%s</code> is not accessible. Please check your WordPress setup or permalink structure. If the setup seems fine, maybe check if a plugin might restrict the access.',
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'activitypub'
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),
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$author_url
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)
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);
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}
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$response_code = \wp_remote_retrieve_response_code( $response );
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// check for redirects
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if ( \in_array( $response_code, array( 301, 302, 307, 308 ), true ) ) {
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return new WP_Error(
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'author_url_not_accessible',
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\sprintf(
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// translators: %s: Author URL
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\__(
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'Your author URL <code>%s</code> is redirecting to another page, this is often done by SEO plugins like "Yoast SEO".',
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'activitypub'
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),
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$author_url
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)
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);
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}
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// check if response is JSON
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$body = \wp_remote_retrieve_body( $response );
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if ( ! \is_string( $body ) || ! \is_array( \json_decode( $body, true ) ) ) {
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return new WP_Error(
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'author_url_not_accessible',
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\sprintf(
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// translators: %s: Author URL
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\__(
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'Your author URL <code>%s</code> does not return valid JSON for <code>application/activity+json</code>. Please check if your hosting supports alternate <code>Accept</code> headers.',
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'activitypub'
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),
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$author_url
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)
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);
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}
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return true;
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}
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/**
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* Check if WebFinger endpoint is accessible and profile request returns correct JSON
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*
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* @return boolean|WP_Error
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*/
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public static function is_webfinger_endpoint_accessible() {
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$user = \wp_get_current_user();
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$account = get_webfinger_resource( $user->ID );
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$url = Webfinger::resolve( $account );
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if ( \is_wp_error( $url ) ) {
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$allowed = array( 'code' => array() );
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$not_accessible = wp_kses(
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// translators: %s: Author URL
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\__(
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'Your WebFinger endpoint <code>%s</code> is not accessible. Please check your WordPress setup or permalink structure.',
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'activitypub'
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),
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$allowed
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);
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$invalid_response = wp_kses(
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// translators: %s: Author URL
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\__(
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'Your WebFinger endpoint <code>%s</code> does not return valid JSON for <code>application/jrd+json</code>.',
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'activitypub'
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),
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$allowed
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);
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$health_messages = array(
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'webfinger_url_not_accessible' => \sprintf(
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$not_accessible,
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$url->get_error_data()
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),
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'webfinger_url_invalid_response' => \sprintf(
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// translators: %s: Author URL
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$invalid_response,
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$url->get_error_data()
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),
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);
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$message = null;
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if ( isset( $health_messages[ $url->get_error_code() ] ) ) {
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$message = $health_messages[ $url->get_error_code() ];
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}
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return new WP_Error(
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$url->get_error_code(),
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$message,
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$url->get_error_data()
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);
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}
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return true;
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}
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/**
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* Retrieve the URL to the author page for the user with the ID provided.
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*
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* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
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*
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* @param int $author_id Author ID.
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* @param string $author_nicename Optional. The author's nicename (slug). Default empty.
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*
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* @return string The URL to the author's page.
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*/
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public static function get_author_posts_url( $author_id, $author_nicename = '' ) {
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global $wp_rewrite;
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$auth_id = (int) $author_id;
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$link = $wp_rewrite->get_author_permastruct();
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if ( empty( $link ) ) {
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$file = home_url( '/' );
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$link = $file . '?author=' . $auth_id;
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} else {
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if ( '' === $author_nicename ) {
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$user = get_userdata( $author_id );
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if ( ! empty( $user->user_nicename ) ) {
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$author_nicename = $user->user_nicename;
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}
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}
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$link = str_replace( '%author%', $author_nicename, $link );
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$link = home_url( user_trailingslashit( $link ) );
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}
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return $link;
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}
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/**
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* Static function for generating site debug data when required.
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*
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* @param array $info The debug information to be added to the core information page.
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* @return array The filtered information
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*/
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public static function debug_information( $info ) {
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$info['activitypub'] = array(
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'label' => __( 'ActivityPub', 'activitypub' ),
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'fields' => array(
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'webfinger' => array(
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'label' => __( 'WebFinger Resource', 'activitypub' ),
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'value' => Webfinger::get_user_resource( wp_get_current_user()->ID ),
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'private' => true,
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),
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'author_url' => array(
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'label' => __( 'Author URL', 'activitypub' ),
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'value' => get_author_posts_url( wp_get_current_user()->ID ),
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'private' => true,
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),
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'plugin_version' => array(
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'label' => __( 'Plugin Version', 'activitypub' ),
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'value' => get_plugin_version(),
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'private' => true,
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),
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),
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);
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return $info;
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}
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}
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