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<?php |
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/** |
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* Core Rollback |
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* |
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* @author Andy Fragen |
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* @license MIT |
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* @link https://github.com/afragen/core-rollback |
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* @package core-rollback |
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*/ |
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|
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namespace Fragen\Rollback; |
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|
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/* |
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* Exit if called directly. |
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*/ |
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if ( ! defined( 'WPINC' ) ) { |
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die; |
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} |
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|
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/** |
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* Class Core |
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*/ |
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class Core { |
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/** |
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* Core versions for re-installation. |
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* |
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* @var array |
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*/ |
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public static $core_versions; |
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|
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/** |
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* Constructor. |
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*/ |
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public function __construct() { |
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static::$core_versions = $this->get_core_versions(); |
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} |
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|
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/** |
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* Get all core versions from Core API. |
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* |
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* @return array Array of versions and downloads. |
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*/ |
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public function get_core_versions() { |
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$versions = get_site_transient( 'core_rollback' ); |
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if ( ! $versions ) { |
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$versions = []; |
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$locale = get_locale(); |
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$response = wp_remote_get( "https://api.wordpress.org/core/version-check/1.7/?locale={$locale}" ); |
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if ( is_wp_error( $response ) ) { |
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return []; |
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} |
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$body = wp_remote_retrieve_body( $response ); |
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$body = json_decode( $body ); |
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$offers = $body->offers; |
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foreach ( $offers as $offer ) { |
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if ( version_compare( $offer->version, '4.0', '>=' ) ) { |
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$offer->response = 'latest'; |
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$versions[ $offer->version ] = $offer; |
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} |
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} |
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set_site_transient( 'core_rollback', $versions, DAY_IN_SECONDS ); |
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} |
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|
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return $versions; |
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} |
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|
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/** |
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* Load hooks. |
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*/ |
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public function load_hooks() { |
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add_filter( 'http_request_args', [ $this, 'filter_http_request_args' ], 10, 2 ); |
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add_filter( 'pre_http_request', [ $this, 'filter_http_request' ], 10, 3 ); |
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} |
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|
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/** |
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* Add core rollback version to http_request_args. |
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* |
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* @param array $args Array of HTTP request args. |
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* @param string $url URL for HTTP request. |
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* |
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* @return array |
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*/ |
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public function filter_http_request_args( $args, $url ) { |
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if ( false === strpos( $url, '//api.wordpress.org/core/version-check/' ) ) { |
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return $args; |
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} |
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$rollback = get_site_transient( '_core_rollback' ); |
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|
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if ( $rollback ) { |
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$args['_rollback_version'] = $rollback['core_dropdown']; |
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} |
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|
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return $args; |
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} |
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|
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/** |
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* Filter 'pre_http_request' to add rollback API check. |
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* |
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* @param mixed $result $result from filter. |
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* @param array $args Array of filter args. |
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* @param string $url URL from filter. |
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* |
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* @return \stdClass $response Output from wp_remote_get(). |
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*/ |
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public function filter_http_request( $result, $args, $url ) { |
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if ( $result || isset( $args['_core_rollback'] ) ) { |
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return $result; |
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} |
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if ( false === strpos( $url, '//api.wordpress.org/core/version-check/' ) ) { |
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return $result; |
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} |
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|
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// It's a core-update request. |
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$args['_core_rollback'] = true; |
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|
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$response = wp_remote_get( $url, $args ); |
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if ( is_wp_error( $response ) ) { |
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return $result; |
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} |
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if ( isset( $args['_rollback_version'] ) ) { |
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$rollback_version = sanitize_text_field( $args['_rollback_version'] ); |
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$response = $this->set_rollback( $response, $rollback_version ); |
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} |
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|
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return $response; |
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} |
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|
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/** |
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* Update Core API update response to add rollback. |
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* |
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* @param \stdClass $response Core API response. |
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* @param string $rollback_version Rollback version. |
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* |
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* @return \stdClass |
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*/ |
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public function set_rollback( $response, $rollback_version ) { |
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if ( ! array_key_exists( $rollback_version, static::$core_versions ) ) { |
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return $response; |
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} |
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$body = wp_remote_retrieve_body( $response ); |
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$offers = \json_decode( $body ); |
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$latest = false; |
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$num = count( array_keys( $offers->offers ) ); |
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foreach ( array_keys( $offers->offers ) as $key ) { |
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if ( 0 === $key ) { |
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continue; |
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} |
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|
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if ( 'latest' === $offers->offers[ $key ]->response ) { |
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$offers->offers[ $key ] = static::$core_versions[ $rollback_version ]; |
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$latest = true; |
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} |
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} |
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|
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if ( ! $latest && ( ( $key + 1 ) === $num ) ) { |
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$offers->offers[ $num ] = static::$core_versions[ $rollback_version ]; |
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} |
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|
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$body = \json_encode( $offers ); |
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$response['body'] = $body; |
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|
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return $response; |
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} |
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} |
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