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<?php class ET_Core_Cache_Directory { /** * @since 4.0.8 * @var self */ protected static $_instance; /** * Whether or not we can write to the cache directory. * * @since 4.0.8 * @var bool */ public $can_write; /** * Absolute path to cache directory * * @since 4.0.8 * @var string */ public $path = ''; /** * URL for {@see self::$path} * * @since 4.0.8 * @var string */ public $url = ''; /** * @since 4.0.8 * @var WP_Filesystem_Base */ public $wpfs; /** * ET_Core_Cache_Directory constructor. * * @since 4.0.8 */ public function __construct() { if ( self::$_instance ) { et_wrong( 'Use "ET_Core_Cache_Directory::instance()" instead of "new ET_Core_Cache_Directory".' ); return; } self::$_instance = $this; $this->_initialize(); } /** * Determines the cache directory path and url based on where we can write files * and whether or not the user has defined a custom path and url. * * @since 4.0.8 */ protected function _initialize() { $this->_initialize_wpfs(); if ( $this->_maybe_use_custom_path() ) { return; } $uploads_dir_info = (object) wp_get_upload_dir(); $path = et_()->path( WP_CONTENT_DIR, 'et-cache' ); $url = content_url( 'et-cache' ); $can_write = $this->wpfs->is_writable( $path ) && ! is_file( $path ); $can_create = ! $can_write && $this->wpfs->is_writable( WP_CONTENT_DIR ); if ( ! $can_write && ! $can_create && $this->wpfs->is_writable( $uploads_dir_info->basedir ) ) { // We can create our cache directory in the uploads directory $can_create = true; $path = et_()->path( $uploads_dir_info->basedir, 'et-cache' ); $url = et_()->path( $uploads_dir_info->baseurl, 'et-cache' ); } $this->can_write = $can_write || $can_create; $this->path = $path; $this->url = $url; $this->_maybe_adjust_path_for_multisite( $uploads_dir_info ); /** * Absolute path to directory where we can store cache files. * * @since 4.0.8 * @var string */ define( 'ET_CORE_CACHE_DIR', $this->path ); /** * URL to {@see ET_CORE_CACHE_DIR}. * * @since 4.0.8 * @var string */ define( 'ET_CORE_CACHE_DIR_URL', $this->url ); $this->can_write && et_()->ensure_directory_exists( $this->path ); } /** * Ensures that the WP Filesystem API has been initialized. * * @since?? * * @return WP_Filesystem_Base */ protected function _initialize_wpfs() { require_once ABSPATH . 'wp-admin/includes/file.php'; if ( defined( 'ET_CORE_CACHE_DIR' ) && @WP_Filesystem( array(), ET_CORE_CACHE_DIR, true ) ) { // We can write to a user-specified directory return $this->wpfs = $GLOBALS['wp_filesystem']; } if ( @WP_Filesystem( array(), false, true ) ) { // We can write to WP_CONTENT_DIR return $this->wpfs = $GLOBALS['wp_filesystem']; } $uploads_dir = (object) wp_get_upload_dir(); if ( @WP_Filesystem( array(), $uploads_dir->basedir, true ) ) { // We can write to the uploads directory return $this->wpfs = $GLOBALS['wp_filesystem']; } // We aren't able to write to the filesystem so let's just make sure $this->wpfs // is an instance of the filesystem base class so that calling it won't cause errors. require_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'; // Write notice to log when WP_DEBUG is enabled. $nl = PHP_EOL; $msg = 'Unable to write to filesystem. Please ensure that PHP has write access to one of '; $msg .= "the following directories:{$nl}{$nl}\t- WP_CONTENT_DIR{$nl}\t- wp_upload_dir(){$nl}\t- ET_CORE_CACHE_DIR."; et_debug( $msg ); return $this->wpfs = new WP_Filesystem_Base; } /** * Adjusts the path for multisite if necessary. * * @since 4.0.8 * * @param stdClass $uploads_dir_info (object) wp_get_upload_dir() */ protected function _maybe_adjust_path_for_multisite( $uploads_dir_info ) { if ( et_()->starts_with( $this->path, $uploads_dir_info->basedir ) || ! is_multisite() ) { return; } $site = get_site(); $network_id = $site->site_id; $site_id = $site->blog_id; $this->path = et_()->path( $this->path, $network_id, $site_id ); $this->url = et_()->path( $this->url, $network_id, $site_id ); } /** * Whether or not the user has defined a custom path for the cache directory. * * @since 4.0.8 * * @return bool */ protected function _maybe_use_custom_path() { if ( ! defined( 'ET_CORE_CACHE_DIR' ) ) { return false; } $this->path = ET_CORE_CACHE_DIR; if ( ! $this->can_write = $this->wpfs->is_writable( $this->path ) ) { et_wrong( 'ET_CORE_CACHE_DIR is defined but not writable.', true ); } if ( defined( 'ET_CORE_CACHE_DIR_URL' ) ) { $this->url = ET_CORE_CACHE_DIR_URL; } else { et_wrong( 'When ET_CORE_CACHE_DIR is defined, ET_CORE_CACHE_DIR_URL must also be defined.', true ); } return true; } /** * Returns the class instance. * * @since 4.0.8 * * @return ET_Core_Cache_Directory */ public static function instance() { if ( ! self::$_instance ) { self::$_instance = new self; } return self::$_instance; } }
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