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272 lines
7.1 KiB
PHP
272 lines
7.1 KiB
PHP
<?php
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/**
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* Handle sitemap caching and invalidation.
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*
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* @since 0.9.0
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* @package RankMath
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* @subpackage RankMath\Sitemap
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* @author Rank Math <support@rankmath.com>
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*
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* @copyright Copyright (C) 2008-2019, Yoast BV
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* The following code is a derivative work of the code from the Yoast(https://github.com/Yoast/wordpress-seo/), which is licensed under GPL v3.
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*/
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namespace RankMath\Sitemap;
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use RankMath\Helper;
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use RankMath\Admin\Database\Database;
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defined( 'ABSPATH' ) || exit;
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/**
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* Cache class.
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*/
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class Cache {
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/**
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* Cache mode.
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*
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* @var string
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*/
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private $mode = 'db';
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/**
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* The $wp_filesystem object.
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*
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* @var object WP_Filesystem
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*/
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private $wp_filesystem;
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/**
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* Prefix of the filename for sitemap caches.
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*
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* @var string
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*/
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const STORAGE_KEY_PREFIX = 'rank_math_';
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/**
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* The constructor.
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*/
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public function __construct() {
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$this->wp_filesystem = Helper::get_filesystem();
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$this->mode = $this->is_writable() ? 'file' : 'db';
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/**
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* Change sitemap caching mode (can be "file" or "db").
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*/
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$this->mode = apply_filters( 'rank_math/sitemap/cache_mode', $this->mode );
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}
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/**
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* Is the file writable?
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*
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* @return bool
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*/
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public function is_writable() {
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if ( is_null( $this->wp_filesystem ) || ! Helper::is_filesystem_direct() ) {
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return false;
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}
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$directory_separator = '/';
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$folder_path = $this->get_cache_directory();
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$test_file = $folder_path . $this->get_storage_key();
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// If folder doesn't exist?
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if ( ! file_exists( $folder_path ) ) {
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// Can we create the folder?
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// returns true if yes and false if not.
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$permissions = ( defined( 'FS_CHMOD_DIR' ) ) ? FS_CHMOD_DIR : 0755;
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return $this->wp_filesystem->mkdir( $folder_path, $permissions );
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}
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// Does the file exist?
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// File exists. Is it writable?
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if ( file_exists( $test_file ) && ! $this->wp_filesystem->is_writable( $test_file ) ) {
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// Nope, it's not writable.
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return false;
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}
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// Folder exists, but is it actually writable?
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return $this->wp_filesystem->is_writable( $folder_path );
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}
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/**
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* Get the sitemap that is cached.
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*
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* @param string $type Sitemap type.
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* @param int $page Page number to retrieve.
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* @param bool $html Is HTML sitemap.
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* @return false|string false on no cache found otherwise sitemap file.
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*/
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public function get_sitemap( $type, $page, $html = false ) {
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$filename = $this->get_storage_key( $type, $page, $html );
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if ( false === $filename || is_null( $this->wp_filesystem ) ) {
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return false;
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}
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$path = self::get_cache_directory() . $filename;
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if ( 'file' === $this->mode
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&& is_a( $this->wp_filesystem, 'WP_Filesystem_Direct' )
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&& $this->wp_filesystem->exists( $path ) ) {
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return $this->wp_filesystem->get_contents( $path );
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}
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$filename = "sitemap_{$type}_$filename";
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$sitemap = get_transient( $filename );
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return maybe_unserialize( $sitemap );
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}
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/**
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* Store the sitemap page from cache.
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*
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* @param string $type Sitemap type.
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* @param int $page Page number to store.
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* @param string $sitemap Sitemap body to store.
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* @param bool $html Is HTML sitemap.
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* @return boolean
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*/
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public function store_sitemap( $type, $page, $sitemap, $html = false ) {
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$filename = $this->get_storage_key( $type, $page, $html );
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if ( false === $filename || is_null( $this->wp_filesystem ) ) {
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return false;
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}
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if ( 'file' === $this->mode ) {
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$stored = $this->wp_filesystem->put_contents( self::get_cache_directory() . $filename, $sitemap, FS_CHMOD_FILE );
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if ( true === $stored ) {
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self::cached_files( $filename, $type );
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return $stored;
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}
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}
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$filename = "sitemap_{$type}_$filename";
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return set_transient( $filename, maybe_serialize( $sitemap ), DAY_IN_SECONDS * 100 );
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}
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/**
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* Get filename for sitemap.
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*
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* @param null|string $type The type to get the key for. Null or '1' for index cache.
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* @param int $page The page of cache to get the key for.
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* @param boolean $html Whether to add html extension.
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* @return boolean|string The key where the cache is stored on. False if the key could not be generated.
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*/
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private function get_storage_key( $type = null, $page = 1, $html = false ) {
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$type = is_null( $type ) ? '1' : $type;
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$filename = self::STORAGE_KEY_PREFIX . md5( "{$type}_{$page}_" . home_url() ) . '.' . ( $html ? 'html' : 'xml' );
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return $filename;
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}
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/**
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* Get cache directory.
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*
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* @return string
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*/
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public static function get_cache_directory() {
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$dir = wp_upload_dir();
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$default = $dir['basedir'] . '/rank-math';
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/**
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* Filter XML sitemap cache directory.
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*
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* @param string $unsigned Default cache directory
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*/
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$filtered = apply_filters( 'rank_math/sitemap/cache_directory', $default );
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if ( ! is_string( $filtered ) || '' === $filtered ) {
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$filtered = $default;
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}
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return trailingslashit( $filtered );
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}
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/**
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* Read/Write cached files.
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*
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* @param mixed $value Pass null to get option,
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* Pass false to delete option,
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* Pass value to update option.
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* @param string $type Sitemap type.
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* @return mixed
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*/
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public static function cached_files( $value = null, $type = '' ) {
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if ( '' !== $type ) {
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$options = Helper::option( 'sitemap_cache_files' );
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$options[ $value ] = $type;
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return Helper::option( 'sitemap_cache_files', $options );
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}
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return Helper::option( 'sitemap_cache_files', $value );
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}
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/**
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* Invalidate sitemap cache.
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*
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* @param null|string $type The type to get the key for. Null for all caches.
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*/
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public static function invalidate_storage( $type = null ) {
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/**
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* Filter: 'rank_math/sitemap/invalidate_storage' - Allow developers to disable sitemap cache invalidation.
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*/
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if ( ! apply_filters( 'rank_math/sitemap/invalidate_storage', true, $type ) ) {
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return;
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}
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$wp_filesystem = Helper::get_filesystem();
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if ( is_null( $wp_filesystem ) ) {
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return;
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}
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$directory = self::get_cache_directory();
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if ( is_null( $type ) ) {
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$wp_filesystem->delete( $directory, true );
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wp_mkdir_p( $directory );
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self::clear_transients();
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self::cached_files( false );
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Helper::clear_cache( 'sitemap' );
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return;
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}
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$data = [];
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$files = self::cached_files();
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foreach ( $files as $file => $sitemap_type ) {
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if ( $type !== $sitemap_type ) {
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$data[ $file ] = $sitemap_type;
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continue;
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}
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$wp_filesystem->delete( $directory . $file );
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}
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self::clear_transients( $type );
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self::cached_files( $data );
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Helper::clear_cache( 'sitemap/' . $type );
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/**
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* Action: 'rank_math/sitemap/invalidated_storage' - Runs after sitemap cache invalidation.
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*/
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do_action( 'rank_math/sitemap/invalidated_storage', $type );
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}
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/**
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* Reset ALL transient caches.
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*
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* @param null|string $type The type to get the key for. Null for all caches.
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*/
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private static function clear_transients( $type = null ) {
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if ( is_null( $type ) ) {
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return Database::table( 'options' )
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->whereLike( 'option_name', '_transient_sitemap_' )
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->delete();
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}
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return Database::table( 'options' )
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->whereLike( 'option_name', '_transient_sitemap_' . $type )
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->delete();
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}
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}
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