135 lines
3.6 KiB
PHP
135 lines
3.6 KiB
PHP
<?php
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namespace pterotype\util;
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require_once plugin_dir_path( __FILE__ ) . 'server/objects.php';
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function dereference_object( $object ) {
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return dereference_object_helper( $object, 0 );
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}
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function dereference_object_helper( $object, $depth ) {
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if ( $depth === 30 ) {
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return $object;
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}
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if ( is_array( $object ) ) {
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if ( array_key_exists( 'type', $object ) &&
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$object['type'] === 'Link' &&
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array_key_exists( 'href', $object ) &&
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filter_var( $object['href'], FILTER_VALIDATE_URL ) ) {
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return get_object_from_url_helper( $object['href'], $depth );
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}
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return $object;
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} else if ( filter_var( $object, FILTER_VALIDATE_URL ) ) {
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return get_object_from_url_helper( $object, $depth );
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} else {
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return new \WP_Error(
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'invalid_object',
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__( 'Not a valid ActivityPub object or reference', 'pterotype' ),
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array( 'status' => 400 )
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);
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}
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}
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function get_object_from_url( $url ) {
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return get_object_from_url_helper( $url, 0 );
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}
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function get_object_from_url_helper( $url, $depth ) {
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$cached_object = \pterotype\objects\get_object_by_activitypub_id( $url );
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if ( $cached_object && ! is_wp_error( $cached_object ) ) {
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return dereference_object_helper( $cached_object, $depth + 1 );
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}
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if ( is_local_url( $url ) ) {
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return retrieve_local_object( $url );
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}
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$response = wp_remote_get( $url, array(
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'headers' => array(
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'Accept' => 'application/ld+json',
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),
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) );
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if ( is_wp_error( $response ) ) {
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return $response;
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}
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$body = wp_remote_retrieve_body( $response );
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if ( empty( $body ) ) {
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return new \WP_Error(
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'not_found',
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__( 'The object did not dereference to a valid object', 'pterotype' ),
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array( 'status' => 404 )
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);
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}
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$body_array = json_decode( $body, true );
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return dereference_object_helper( $body_array, $depth + 1 );
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}
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function retrieve_local_object( $url ) {
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$server = rest_get_server();
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$request = \WP_REST_Request::from_url( $url );
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if ( ! $request ) {
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return new \WP_Error(
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'not_local_url',
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__( 'Expected a local URL', 'pterotype' )
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);
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}
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$response = $server->dispatch( $request );
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if ( $response->is_error() ) {
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return $response->as_error();
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} else {
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return $response->get_data();
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}
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}
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function is_local_url( $url ) {
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$parsed = parse_url( $url );
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if ( $parsed ) {
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$site_host = parse_url( get_site_url() )['host'];
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return $parsed['host'] === $site_host;
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}
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return false;
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}
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function is_same_object( $object1, $object2 ) {
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return get_id( $object1 ) === get_id( $object2 );
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}
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function get_id( $object ) {
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if ( is_array( $object ) ) {
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return array_key_exists( 'id', $object ) ?
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$object['id'] :
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null;
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} else {
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return $object;
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}
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}
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function get_log_dir() {
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return plugin_dir_path( __FILE__ ) . '../log';
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}
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function log( $log_file, $str, $append = true ) {
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if ( ! WP_DEBUG ) {
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return;
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}
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$log_dir = get_log_dir();
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$log_file = '/' . $log_file;
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if ( ! file_exists( $log_dir ) ) {
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mkdir( $log_dir, 0777, true );
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}
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if ( $append ) {
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file_put_contents( $log_dir . $log_file, $str, FILE_APPEND );
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} else {
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file_put_contents( $log_dir . $log_file, $str );
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}
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}
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function log_var( $log_file, $var, $append = true ) {
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if ( ! WP_DEBUG ) {
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return;
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}
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ob_start();
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var_dump( $var );
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$dump = ob_get_clean();
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log( $log_file, $dump, $append );
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}
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?>
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