add wp-rocket

wp-content/plugins/wp-rocket/inc/classes/subscriber/Plugin/class-information-subscriber.php

@@ -0,0 +1,161 @@
+<?php
+namespace WP_Rocket\Subscriber\Plugin;
+
+use WP_Rocket\Event_Management\Subscriber_Interface;
+
+/**
+ * Manages the plugin information.
+ *
+ * @since  3.3.6
+ * @author Grégory Viguier
+ */
+class Information_Subscriber implements Subscriber_Interface {
+	use \WP_Rocket\Traits\Updater_Api_Tools;
+
+	/**
+	 * Plugin slug.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $plugin_slug;
+
+	/**
+	 * URL to contact to get plugin info.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $api_url;
+
+	/**
+	 * An ID to use when a API request fails.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access protected
+	 * @author Grégory Viguier
+	 */
+	protected $request_error_id = 'plugins_api_failed';
+
+	/**
+	 * Constructor
+	 *
+	 * @since  3.3.6
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param array $args {
+	 *     Required arguments to populate the class properties.
+	 *
+	 *     @type string $plugin_file Full path to the plugin.
+	 *     @type string $api_url     URL to contact to get update info.
+	 * }
+	 */
+	public function __construct( $args ) {
+		if ( isset( $args['plugin_file'] ) ) {
+			$this->plugin_slug = $this->get_plugin_slug( $args['plugin_file'] );
+		}
+		if ( isset( $args['api_url'] ) ) {
+			$this->api_url = $args['api_url'];
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public static function get_subscribed_events() {
+		return [
+			'plugins_api'        => [ 'exclude_rocket_from_wp_info', 10, 3 ],
+			'plugins_api_result' => [ 'add_rocket_info', 10, 3 ],
+		];
+	}
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** PLUGIN INFO ============================================================================= */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Don’t ask for plugin info to the repository.
+	 *
+	 * @since  3.3.6
+	 * @access public
+	 * @see    plugins_api()
+	 * @author Grégory Viguier
+	 *
+	 * @param  false|object|array $bool   The result object or array. Default false.
+	 * @param  string             $action The type of information being requested from the Plugin Install API.
+	 * @param  object             $args   Plugin API arguments.
+	 * @return false|object|array         Empty object if slug is WP Rocket, default value otherwise.
+	 */
+	public function exclude_rocket_from_wp_info( $bool, $action, $args ) {
+		if ( ! $this->is_requesting_rocket_info( $action, $args ) ) {
+			return $bool;
+		}
+		return new \stdClass();
+	}
+
+	/**
+	 * Insert WP Rocket plugin info.
+	 *
+	 * @since  3.3.6
+	 * @access public
+	 * @see    plugins_api()
+	 * @author Grégory Viguier
+	 *
+	 * @param  object|\WP_Error $res    Response object or WP_Error.
+	 * @param  string           $action The type of information being requested from the Plugin Install API.
+	 * @param  object           $args   Plugin API arguments.
+	 * @return object|\WP_Error         Updated response object or WP_Error.
+	 */
+	public function add_rocket_info( $res, $action, $args ) {
+		if ( ! $this->is_requesting_rocket_info( $action, $args ) || empty( $res->external ) ) {
+			return $res;
+		}
+
+		$request = wp_remote_post(
+			$this->api_url,
+			[
+				'timeout' => 30,
+				'action'  => 'plugin_information',
+				'request' => maybe_serialize( $args ),
+			]
+		);
+
+		if ( is_wp_error( $request ) ) {
+			return $this->get_request_error( $request->get_error_message() );
+		}
+
+		$res  = maybe_unserialize( wp_remote_retrieve_body( $request ) );
+		$code = wp_remote_retrieve_response_code( $request );
+
+		if ( 200 !== $code || ! ( is_object( $res ) || is_array( $res ) ) ) {
+			return $this->get_request_error( wp_remote_retrieve_body( $request ) );
+		}
+
+		return $res;
+	}
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** TOOLS =================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Tell if requesting WP Rocket plugin info.
+	 *
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $action The type of information being requested from the Plugin Install API.
+	 * @param  object $args   Plugin API arguments.
+	 * @return bool
+	 */
+	private function is_requesting_rocket_info( $action, $args ) {
+		return ( 'query_plugins' === $action || 'plugin_information' === $action ) && isset( $args->slug ) && $args->slug === $this->plugin_slug;
+	}
+}

wp-content/plugins/wp-rocket/inc/classes/subscriber/Plugin/class-updater-api-common-subscriber.php

@@ -0,0 +1,189 @@
+<?php
+namespace WP_Rocket\Subscriber\Plugin;
+
+use WP_Rocket\Event_Management\Subscriber_Interface;
+
+/**
+ * Manages common hooks for the plugin updater.
+ *
+ * @since  3.3.6
+ * @author Grégory Viguier
+ */
+class Updater_Api_Common_Subscriber implements Subscriber_Interface {
+
+	/**
+	 * API’s URL domain.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $api_host;
+
+	/**
+	 * URL to the site’s home.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $site_url;
+
+	/**
+	 * Current version of the plugin.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $plugin_version;
+
+	/**
+	 * Key slug used when submitting new settings (POST).
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $settings_slug;
+
+	/**
+	 * The key (1st part of the action) used for the nonce field used on the settings page. It is also used in the page URL.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $settings_nonce_key;
+
+	/**
+	 * Options instance.
+	 *
+	 * @var    \WP_Rocket\Admin\Options
+	 * @since  3.3.6
+	 * @access private
+	 * @author Grégory Viguier
+	 */
+	private $plugin_options;
+
+	/**
+	 * Constructor
+	 *
+	 * @since  3.3.6
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param array $args {
+	 *     Required arguments to populate the class properties.
+	 *
+	 *     @type string  $api_host           API’s URL domain.
+	 *     @type string  $site_url           URL to the site’s home.
+	 *     @type string  $plugin_version     Current version of the plugin.
+	 *     @type string  $settings_slug      Key slug used when submitting new settings (POST).
+	 *     @type string  $settings_nonce_key The key (1st part of the action) used for the nonce field used on the settings page. It is also used in the page URL.
+	 *     @type Options $plugin_options     Options instance.
+	 * }
+	 */
+	public function __construct( $args ) {
+		foreach ( [ 'api_host', 'site_url', 'plugin_version', 'settings_slug', 'settings_nonce_key', 'plugin_options' ] as $setting ) {
+			if ( isset( $args[ $setting ] ) ) {
+				$this->$setting = $args[ $setting ];
+			}
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public static function get_subscribed_events() {
+		return [
+			'http_request_args' => [ 'maybe_set_rocket_user_agent', 10, 2 ],
+		];
+	}
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** HOOKS =================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Force our user agent header when we hit our URLs.
+	 *
+	 * @since  3.3.6
+	 * @access public
+	 *
+	 * @param  array  $request An array of request arguments.
+	 * @param  string $url     Requested URL.
+	 * @return array           An array of requested arguments
+	 */
+	public function maybe_set_rocket_user_agent( $request, $url ) {
+		if ( ! is_string( $url ) ) {
+			return $request;
+		}
+
+		if ( $this->api_host && strpos( $url, $this->api_host ) !== false ) {
+			$request['user-agent'] = sprintf( '%s;%s', $request['user-agent'], $this->get_rocket_user_agent() );
+		}
+
+		return $request;
+	}
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** TOOLS =================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the user agent to use when requesting the API.
+	 *
+	 * @since  3.3.6
+	 * @access protected
+	 * @author Grégory Viguier
+	 *
+	 * @return string WP Rocket user agent
+	 */
+	public function get_rocket_user_agent() {
+		$consumer_key   = $this->get_current_option( 'consumer_key' );
+		$consumer_email = $this->get_current_option( 'consumer_email' );
+		$bonus          = $this->plugin_options && $this->plugin_options->get( 'do_beta' ) ? '+' : '';
+		$php_version    = preg_replace( '@^(\d+\.\d+).*@', '\1', phpversion() );
+
+		return sprintf( 'WP-Rocket|%s%s|%s|%s|%s|%s;', $this->plugin_version, $bonus, $consumer_key, $consumer_email, esc_url( $this->site_url ), $php_version );
+	}
+
+	/**
+	 * Get a plugin option. If the value is currently being posted through the settings page, it is returned instead of the one stored in the database.
+	 *
+	 * @since  3.3.6
+	 * @access protected
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $field_name Name of a plugin option.
+	 * @return string
+	 */
+	protected function get_current_option( $field_name ) {
+		if ( current_user_can( 'rocket_manage_options' ) && wp_verify_nonce( filter_input( INPUT_POST, '_wpnonce' ), $this->settings_nonce_key . '-options' ) ) {
+			$posted = filter_input( INPUT_POST, $this->settings_slug, FILTER_DEFAULT, FILTER_REQUIRE_ARRAY );
+
+			if ( ! empty( $posted[ $field_name ] ) && is_string( $posted[ $field_name ] ) ) {
+				// The value has been posted through the settings page.
+				return sanitize_text_field( $posted[ $field_name ] );
+			}
+		}
+
+		if ( ! $this->plugin_options ) {
+			return '';
+		}
+
+		$option_value = $this->plugin_options->get( $field_name );
+
+		if ( $option_value && is_string( $option_value ) ) {
+			return $option_value;
+		}
+
+		return '';
+	}
+}

wp-content/plugins/wp-rocket/inc/classes/subscriber/Plugin/class-updater-subscriber.php

@@ -0,0 +1,435 @@
+<?php
+namespace WP_Rocket\Subscriber\Plugin;
+
+use WP_Rocket\Event_Management\Subscriber_Interface;
+use WP_Rocket\Traits\Updater_Api_Tools;
+
+/**
+ * Manages the plugin updates.
+ *
+ * @since  3.3.6
+ */
+class Updater_Subscriber implements Subscriber_Interface {
+	use Updater_Api_Tools;
+
+	/**
+	 * Full path to the plugin.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 */
+	private $plugin_file;
+
+	/**
+	 * Current version of the plugin.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 */
+	private $plugin_version;
+
+	/**
+	 * URL to the plugin provider.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 */
+	private $vendor_url;
+
+	/**
+	 * URL to contact to get update info.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 */
+	private $api_url;
+
+	/**
+	 * A list of plugin’s icon URLs.
+	 *
+	 * @var    array {
+	 *     @type string $2x  URL to the High-DPI size (png or jpg). Optional.
+	 *     @type string $1x  URL to the normal icon size (png or jpg). Mandatory.
+	 *     @type string $svg URL to the svg version of the icon. Optional.
+	 * }
+	 * @since  3.3.6
+	 * @see    https://developer.wordpress.org/plugins/wordpress-org/plugin-assets/#plugin-icons
+	 */
+	private $icons;
+
+	/**
+	 * An ID to use when a API request fails.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 */
+	protected $request_error_id = 'rocket_update_failed';
+
+	/**
+	 * Name of the transient that caches the update data.
+	 *
+	 * @var    string
+	 * @since  3.3.6
+	 */
+	protected $cache_transient_name = 'wp_rocket_update_data';
+
+	/**
+	 * Constructor
+	 *
+	 * @since  3.3.6
+	 *
+	 * @param array $args {
+	 *     Required arguments to populate the class properties.
+	 *
+	 *     @type string $plugin_file    Full path to the plugin.
+	 *     @type string $plugin_version Current version of the plugin.
+	 *     @type string $vendor_url     URL to the plugin provider.
+	 *     @type string $api_url        URL to contact to get update info.
+	 * }
+	 */
+	public function __construct( $args ) {
+		foreach ( [ 'plugin_file', 'plugin_version', 'vendor_url', 'api_url', 'icons' ] as $setting ) {
+			if ( isset( $args[ $setting ] ) ) {
+				$this->$setting = $args[ $setting ];
+			}
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public static function get_subscribed_events() {
+		return [
+			'http_request_args'                     => [ 'exclude_rocket_from_wp_updates', 5, 2 ],
+			'pre_set_site_transient_update_plugins' => 'maybe_add_rocket_update_data',
+			'deleted_site_transient'                => 'maybe_delete_rocket_update_data_cache',
+			'wp_rocket_loaded'                      => 'maybe_force_check',
+			'auto_update_plugin'                    => [ 'disable_auto_updates', 10, 2 ],
+		];
+	}
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** PLUGIN UPDATE DATA ====================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * When WP checks plugin versions against the latest versions hosted on WordPress.org, remove WPR from the list.
+	 *
+	 * @since  3.3.6
+	 * @see    wp_update_plugins()
+	 *
+	 * @param  array  $request An array of HTTP request arguments.
+	 * @param  string $url     The request URL.
+	 * @return array           Updated array of HTTP request arguments.
+	 */
+	public function exclude_rocket_from_wp_updates( $request, $url ) {
+		if ( ! is_string( $url ) ) {
+			return $request;
+		}
+
+		if ( ! preg_match( '@^https?://api.wordpress.org/plugins/update-check(/|\?|$)@', $url ) || empty( $request['body']['plugins'] ) ) {
+			// Not a plugin update request. Stop immediately.
+			return $request;
+		}
+
+		/**
+		 * Depending on the API version, the data can have several forms:
+		 * - Can be serialized or JSON encoded,
+		 * - Can be an object of arrays or an object of objects.
+		 */
+		$is_serialized = is_serialized( $request['body']['plugins'] );
+		$basename      = plugin_basename( $this->plugin_file );
+		$edited        = false;
+
+		if ( $is_serialized ) {
+			$plugins = maybe_unserialize( $request['body']['plugins'] );
+		} else {
+			$plugins = json_decode( $request['body']['plugins'] );
+		}
+
+		if ( ! empty( $plugins->plugins ) ) {
+			if ( is_object( $plugins->plugins ) ) {
+				if ( isset( $plugins->plugins->$basename ) ) {
+					unset( $plugins->plugins->$basename );
+					$edited = true;
+				}
+			} elseif ( is_array( $plugins->plugins ) ) {
+				if ( isset( $plugins->plugins[ $basename ] ) ) {
+					unset( $plugins->plugins[ $basename ] );
+					$edited = true;
+				}
+			}
+		}
+
+		if ( ! empty( $plugins->active ) ) {
+			$active_is_object = is_object( $plugins->active );
+
+			if ( $active_is_object || is_array( $plugins->active ) ) {
+				foreach ( $plugins->active as $key => $plugin_basename ) {
+					if ( $plugin_basename !== $basename ) {
+						continue;
+					}
+					if ( $active_is_object ) {
+						unset( $plugins->active->$key );
+					} else {
+						unset( $plugins->active[ $key ] );
+					}
+					$edited = true;
+					break;
+				}
+			}
+		}
+
+		if ( $edited ) {
+			if ( $is_serialized ) {
+				$request['body']['plugins'] = maybe_serialize( $plugins );
+			} else {
+				$request['body']['plugins'] = wp_json_encode( $plugins );
+			}
+		}
+
+		return $request;
+	}
+
+	/**
+	 * Add WPR update data to the "WP update" transient.
+	 *
+	 * @since  3.3.6
+	 *
+	 * @param  \stdClass $transient_value New value of site transient.
+	 * @return \stdClass
+	 */
+	public function maybe_add_rocket_update_data( $transient_value ) {
+		if ( defined( 'WP_INSTALLING' ) ) {
+			return $transient_value;
+		}
+
+		// Get the remote version data.
+		$remote_data = $this->get_cached_latest_version_data();
+
+		if ( is_wp_error( $remote_data ) ) {
+			return $transient_value;
+		}
+
+		// Make sure the transient value is well formed.
+		if ( ! is_object( $transient_value ) ) {
+			$transient_value = new \stdClass();
+		}
+
+		if ( empty( $transient_value->response ) ) {
+			$transient_value->response = [];
+		}
+
+		if ( empty( $transient_value->checked ) ) {
+			$transient_value->checked = [];
+		}
+
+		// If a newer version is available, add the update.
+		if ( version_compare( $this->plugin_version, $remote_data->new_version, '<' ) ) {
+			$transient_value->response[ $remote_data->plugin ] = $remote_data;
+		}
+
+		$transient_value->checked[ $remote_data->plugin ] = $this->plugin_version;
+
+		return $transient_value;
+	}
+
+	/**
+	 * Delete WPR update data cache when the "WP update" transient is deleted.
+	 *
+	 * @since  3.3.6
+	 *
+	 * @param string $transient_name Deleted transient name.
+	 */
+	public function maybe_delete_rocket_update_data_cache( $transient_name ) {
+		if ( 'update_plugins' === $transient_name ) {
+			$this->delete_rocket_update_data_cache();
+		}
+	}
+
+	/**
+	 * If the `rocket_force_update` query arg is set, force WP to refresh the list of plugins to update.
+	 *
+	 * @since  3.3.6
+	 */
+	public function maybe_force_check() {
+		if ( is_string( filter_input( INPUT_GET, 'rocket_force_update' ) ) ) {
+			delete_site_transient( 'update_plugins' );
+		}
+	}
+
+	/**
+	 * Disable auto-updates for WP Rocket
+	 *
+	 * @since 3.7.5
+	 *
+	 * @param bool|null $update Whether to update. The value of null is internally used to detect whether nothing has hooked into this filter.
+	 * @param object    $item The update offer.
+	 * @return bool|null
+	 */
+	public function disable_auto_updates( $update, $item ) {
+		if ( 'wp-rocket/wp-rocket.php' === $item->plugin ) {
+			return false;
+		}
+
+		return $update;
+	}
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** TOOLS =================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the latest WPR update data from our server.
+	 *
+	 * @since  3.3.6
+	 *
+	 * @return \stdClass|\WP_Error {
+	 *     A \WP_Error object on failure. An object on success:
+	 *
+	 *     @type string $slug        The plugin slug.
+	 *     @type string $plugin      The plugin base name.
+	 *     @type string $new_version The plugin new version.
+	 *     @type string $url         URL to the plugin provider.
+	 *     @type string $package     URL to the zip file of the new version.
+	 *     @type array  $icons       {
+	 *         A list of plugin’s icon URLs.
+	 *
+	 *         @type string $2x  URL to the High-DPI size (png or jpg). Optional.
+	 *         @type string $1x  URL to the normal icon size (png or jpg). Mandatory.
+	 *         @type string $svg URL to the svg version of the icon. Optional.
+	 *     }
+	 * }
+	 */
+	public function get_latest_version_data() {
+		$request = wp_remote_get(
+			$this->api_url,
+			[
+				'timeout' => 30,
+			]
+		);
+
+		if ( is_wp_error( $request ) ) {
+			return $this->get_request_error(
+				[
+					'error_code' => $request->get_error_code(),
+					'response'   => $request->get_error_message(),
+				]
+			);
+		}
+
+		$res  = trim( wp_remote_retrieve_body( $request ) );
+		$code = wp_remote_retrieve_response_code( $request );
+
+		if ( 200 !== $code ) {
+			/**
+			 * If the response doesn’t have a status 200: it is an error, or there is no new update.
+			 */
+			return $this->get_request_error(
+				[
+					'http_code' => $code,
+					'response'  => $res,
+				]
+			);
+		}
+
+		/**
+		 * This will match:
+		 * - `2.3.4.5-beta1||1.2.3.4-beta2||||||||||||||||||||||||||||||||`: expired license.
+		 * - `2.3.4.5-beta1|https://wp-rocket.me/i-should-write-a-funny-thing-here/wp-rocket_1.2.3.4-beta2.zip|1.2.3.4-beta2`: valid license.
+		 */
+		if ( ! preg_match( '@^(?<stable_version>\d+(?:\.\d+){1,3}[^|]*)\|(?<package>(?:http.+\.zip)?)\|(?<user_version>\d+(?:\.\d+){1,3}[^|]*)(?:\|+)?$@', $res, $match ) ) {
+			/**
+			 * If the response doesn’t have the right format, it is an error.
+			 */
+			return $this->get_request_error( $res );
+		}
+
+		$obj = new \stdClass();
+
+		$obj->slug        = $this->get_plugin_slug( $this->plugin_file );
+		$obj->plugin      = plugin_basename( $this->plugin_file );
+		$obj->new_version = $match['user_version'];
+		$obj->url         = $this->vendor_url;
+		$obj->package     = $match['package'];
+		$obj->tested      = WP_ROCKET_WP_VERSION_TESTED;
+
+		if ( $this->icons && ! empty( $this->icons['1x'] ) ) {
+			$obj->icons = $this->icons;
+		}
+
+		return $obj;
+	}
+
+	/**
+	 * Get the cached version of the latest WPR update data.
+	 *
+	 * @since  3.3.6
+	 *
+	 * @return \stdClass|\WP_Error {
+	 *     A \WP_Error object on failure. An object on success:
+	 *
+	 *     @type string $slug        The plugin slug.
+	 *     @type string $plugin      The plugin base name.
+	 *     @type string $new_version The plugin new version.
+	 *     @type string $url         URL to the plugin provider.
+	 *     @type string $package     URL to the zip file of the new version.
+	 *     @type array  $icons       {
+	 *         A list of plugin’s icon URLs.
+	 *
+	 *         @type string $2x  URL to the High-DPI size (png or jpg). Optional.
+	 *         @type string $1x  URL to the normal icon size (png or jpg). Mandatory.
+	 *         @type string $svg URL to the svg version of the icon. Optional.
+	 *     }
+	 * }
+	 */
+	public function get_cached_latest_version_data() {
+		static $response;
+
+		if ( isset( $response ) ) {
+			// "force update" won’t bypass the static cache: only one http request by page load.
+			return $response;
+		}
+
+		$force_update = is_string( filter_input( INPUT_GET, 'rocket_force_update' ) );
+
+		if ( ! $force_update ) {
+			// No "force update": try to get the result from a transient.
+			$response = get_site_transient( $this->cache_transient_name );
+
+			if ( $response && is_object( $response ) ) {
+				// Got something in cache.
+				return $response;
+			}
+		}
+
+		// Get fresh data.
+		$response       = $this->get_latest_version_data();
+		$cache_duration = 12 * HOUR_IN_SECONDS;
+
+		if ( is_wp_error( $response ) ) {
+			$error_data = $response->get_error_data();
+
+			if ( ! empty( $error_data['error_code'] ) ) {
+				// `wp_remote_get()` returned an internal error ('error_code' contains a WP_Error code ).
+				$cache_duration = HOUR_IN_SECONDS;
+			} elseif ( ! empty( $error_data['http_code'] ) && $error_data['http_code'] >= 400 ) {
+				// We got a 4xx or 5xx HTTP error.
+				$cache_duration = 2 * HOUR_IN_SECONDS;
+			}
+		}
+
+		set_site_transient( $this->cache_transient_name, $response, $cache_duration );
+
+		return $response;
+	}
+
+	/**
+	 * Delete WP Rocket update data cache.
+	 *
+	 * @since  3.3.6
+	 */
+	public function delete_rocket_update_data_cache() {
+		delete_site_transient( $this->cache_transient_name );
+	}
+}