378 lines
11 KiB
PHP
378 lines
11 KiB
PHP
<?php
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/**
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* Base WordPress Filesystem.
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*
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* @package WordPress
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* @subpackage Filesystem
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*/
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/**
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* Base WordPress Filesystem class for which Filesystem implementations extend
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*
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* @since 2.5
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*/
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class WP_Filesystem_Base {
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/**
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* Whether to display debug data for the connection.
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*
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* @since 2.5
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* @access public
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* @var bool
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*/
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var $verbose = false;
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/**
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* Cached list of local filepaths to mapped remote filepaths.
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*
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* @since 2.7
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* @access private
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* @var array
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*/
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var $cache = array();
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/**
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* The Access method of the current connection, Set automatically.
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*
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* @since 2.5
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* @access public
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* @var string
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*/
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var $method = '';
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/**
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* Returns the path on the remote filesystem of ABSPATH
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*
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* @since 2.7
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* @access public
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* @return string The location of the remote path.
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*/
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function abspath() {
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$folder = $this->find_folder(ABSPATH);
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//Perhaps the FTP folder is rooted at the WordPress install, Check for wp-includes folder in root, Could have some false positives, but rare.
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if ( ! $folder && $this->is_dir('/wp-includes') )
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$folder = '/';
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return $folder;
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}
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/**
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* Returns the path on the remote filesystem of WP_CONTENT_DIR
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*
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* @since 2.7
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* @access public
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* @return string The location of the remote path.
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*/
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function wp_content_dir() {
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return $this->find_folder(WP_CONTENT_DIR);
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}
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/**
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* Returns the path on the remote filesystem of WP_PLUGIN_DIR
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*
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* @since 2.7
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* @access public
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*
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* @return string The location of the remote path.
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*/
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function wp_plugins_dir() {
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return $this->find_folder(WP_PLUGIN_DIR);
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}
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/**
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* Returns the path on the remote filesystem of the Themes Directory
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*
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* @since 2.7
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* @access public
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*
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* @param string $theme The Theme stylesheet or template for the directory
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* @return string The location of the remote path.
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*/
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function wp_themes_dir( $theme = false ) {
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$theme_root = get_theme_root( $theme );
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// Account for relative theme roots
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if ( '/themes' == $theme_root || ! is_dir( $theme_root ) )
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$theme_root = WP_CONTENT_DIR . $theme_root;
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return $this->find_folder( $theme_root );
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}
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/**
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* Returns the path on the remote filesystem of WP_LANG_DIR
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*
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* @since 3.2.0
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* @access public
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*
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* @return string The location of the remote path.
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*/
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function wp_lang_dir() {
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return $this->find_folder(WP_LANG_DIR);
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}
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/**
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* Locates a folder on the remote filesystem.
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*
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* Deprecated; use WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir() methods instead.
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*
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* @since 2.5
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* @deprecated 2.7
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* @access public
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*
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* @param string $base The folder to start searching from
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* @param bool $echo True to display debug information
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* @return string The location of the remote path.
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*/
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function find_base_dir($base = '.', $echo = false) {
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_deprecated_function(__FUNCTION__, '2.7', 'WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir()' );
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$this->verbose = $echo;
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return $this->abspath();
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}
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/**
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* Locates a folder on the remote filesystem.
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*
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* Deprecated; use WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir() methods instead.
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*
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* @since 2.5
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* @deprecated 2.7
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* @access public
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*
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* @param string $base The folder to start searching from
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* @param bool $echo True to display debug information
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* @return string The location of the remote path.
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*/
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function get_base_dir($base = '.', $echo = false) {
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_deprecated_function(__FUNCTION__, '2.7', 'WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir()' );
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$this->verbose = $echo;
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return $this->abspath();
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}
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/**
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* Locates a folder on the remote filesystem.
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*
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* Assumes that on Windows systems, Stripping off the Drive letter is OK
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* Sanitizes \\ to / in windows filepaths.
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*
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* @since 2.7
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* @access public
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*
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* @param string $folder the folder to locate
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* @return string The location of the remote path.
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*/
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function find_folder($folder) {
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if ( isset( $this->cache[ $folder ] ) )
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return $this->cache[ $folder ];
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if ( stripos($this->method, 'ftp') !== false ) {
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$constant_overrides = array(
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'FTP_BASE' => ABSPATH,
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'FTP_CONTENT_DIR' => WP_CONTENT_DIR,
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'FTP_PLUGIN_DIR' => WP_PLUGIN_DIR,
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'FTP_LANG_DIR' => WP_LANG_DIR
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);
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// Direct matches ( folder = CONSTANT/ )
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foreach ( $constant_overrides as $constant => $dir ) {
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if ( ! defined( $constant ) )
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continue;
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if ( $folder === $dir )
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return trailingslashit( constant( $constant ) );
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}
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// Prefix Matches ( folder = CONSTANT/subdir )
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foreach ( $constant_overrides as $constant => $dir ) {
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if ( ! defined( $constant ) )
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continue;
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if ( 0 === stripos( $folder, $dir ) ) { // $folder starts with $dir
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$potential_folder = preg_replace( '#^' . preg_quote( $dir, '#' ) . '/#i', trailingslashit( constant( $constant ) ), $folder );
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$potential_folder = trailingslashit( $potential_folder );
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if ( $this->is_dir( $potential_folder ) ) {
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$this->cache[ $folder ] = $potential_folder;
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return $potential_folder;
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}
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}
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}
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} elseif ( 'direct' == $this->method ) {
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$folder = str_replace('\\', '/', $folder); //Windows path sanitisation
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return trailingslashit($folder);
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}
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$folder = preg_replace('|^([a-z]{1}):|i', '', $folder); //Strip out windows drive letter if it's there.
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$folder = str_replace('\\', '/', $folder); //Windows path sanitisation
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if ( isset($this->cache[ $folder ] ) )
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return $this->cache[ $folder ];
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if ( $this->exists($folder) ) { //Folder exists at that absolute path.
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$folder = trailingslashit($folder);
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$this->cache[ $folder ] = $folder;
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return $folder;
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}
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if ( $return = $this->search_for_folder($folder) )
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$this->cache[ $folder ] = $return;
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return $return;
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}
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/**
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* Locates a folder on the remote filesystem.
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*
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* Expects Windows sanitized path
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*
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* @since 2.7
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* @access private
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*
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* @param string $folder the folder to locate
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* @param string $base the folder to start searching from
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* @param bool $loop if the function has recursed, Internal use only
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* @return string The location of the remote path.
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*/
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function search_for_folder($folder, $base = '.', $loop = false ) {
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if ( empty( $base ) || '.' == $base )
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$base = trailingslashit($this->cwd());
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$folder = untrailingslashit($folder);
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if ( $this->verbose )
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printf( "\n" . __('Looking for %1$s in %2$s') . "<br/>\n", $folder, $base );
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$folder_parts = explode('/', $folder);
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$folder_part_keys = array_keys( $folder_parts );
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$last_index = array_pop( $folder_part_keys );
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$last_path = $folder_parts[ $last_index ];
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$files = $this->dirlist( $base );
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foreach ( $folder_parts as $index => $key ) {
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if ( $index == $last_index )
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continue; //We want this to be caught by the next code block.
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//Working from /home/ to /user/ to /wordpress/ see if that file exists within the current folder,
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// If it's found, change into it and follow through looking for it.
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// If it cant find WordPress down that route, it'll continue onto the next folder level, and see if that matches, and so on.
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// If it reaches the end, and still cant find it, it'll return false for the entire function.
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if ( isset($files[ $key ]) ){
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//Lets try that folder:
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$newdir = trailingslashit(path_join($base, $key));
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if ( $this->verbose )
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printf( "\n" . __('Changing to %s') . "<br/>\n", $newdir );
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// only search for the remaining path tokens in the directory, not the full path again
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$newfolder = implode( '/', array_slice( $folder_parts, $index + 1 ) );
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if ( $ret = $this->search_for_folder( $newfolder, $newdir, $loop) )
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return $ret;
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}
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}
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//Only check this as a last resort, to prevent locating the incorrect install. All above procedures will fail quickly if this is the right branch to take.
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if (isset( $files[ $last_path ] ) ) {
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if ( $this->verbose )
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printf( "\n" . __('Found %s') . "<br/>\n", $base . $last_path );
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return trailingslashit($base . $last_path);
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}
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// Prevent this function from looping again.
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// No need to proceed if we've just searched in /
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if ( $loop || '/' == $base )
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return false;
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// As an extra last resort, Change back to / if the folder wasn't found.
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// This comes into effect when the CWD is /home/user/ but WP is at /var/www/....
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return $this->search_for_folder( $folder, '/', true );
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}
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/**
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* Returns the *nix style file permissions for a file
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*
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* From the PHP documentation page for fileperms()
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*
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* @link http://docs.php.net/fileperms
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* @since 2.5
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* @access public
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*
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* @param string $file string filename
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* @return string *nix style representation of permissions
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*/
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function gethchmod($file){
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$perms = $this->getchmod($file);
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if (($perms & 0xC000) == 0xC000) // Socket
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$info = 's';
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elseif (($perms & 0xA000) == 0xA000) // Symbolic Link
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$info = 'l';
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elseif (($perms & 0x8000) == 0x8000) // Regular
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$info = '-';
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elseif (($perms & 0x6000) == 0x6000) // Block special
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$info = 'b';
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elseif (($perms & 0x4000) == 0x4000) // Directory
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$info = 'd';
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elseif (($perms & 0x2000) == 0x2000) // Character special
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$info = 'c';
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elseif (($perms & 0x1000) == 0x1000) // FIFO pipe
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$info = 'p';
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else // Unknown
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$info = 'u';
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// Owner
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$info .= (($perms & 0x0100) ? 'r' : '-');
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$info .= (($perms & 0x0080) ? 'w' : '-');
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$info .= (($perms & 0x0040) ?
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(($perms & 0x0800) ? 's' : 'x' ) :
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(($perms & 0x0800) ? 'S' : '-'));
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// Group
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$info .= (($perms & 0x0020) ? 'r' : '-');
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$info .= (($perms & 0x0010) ? 'w' : '-');
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$info .= (($perms & 0x0008) ?
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(($perms & 0x0400) ? 's' : 'x' ) :
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(($perms & 0x0400) ? 'S' : '-'));
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// World
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$info .= (($perms & 0x0004) ? 'r' : '-');
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$info .= (($perms & 0x0002) ? 'w' : '-');
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$info .= (($perms & 0x0001) ?
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(($perms & 0x0200) ? 't' : 'x' ) :
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(($perms & 0x0200) ? 'T' : '-'));
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return $info;
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}
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/**
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* Converts *nix style file permissions to a octal number.
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*
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* Converts '-rw-r--r--' to 0644
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* From "info at rvgate dot nl"'s comment on the PHP documentation for chmod()
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*
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* @link http://docs.php.net/manual/en/function.chmod.php#49614
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* @since 2.5
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* @access public
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*
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* @param string $mode string *nix style file permission
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* @return int octal representation
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*/
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function getnumchmodfromh($mode) {
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$realmode = '';
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$legal = array('', 'w', 'r', 'x', '-');
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$attarray = preg_split('//', $mode);
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for ($i=0; $i < count($attarray); $i++)
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if ($key = array_search($attarray[$i], $legal))
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$realmode .= $legal[$key];
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$mode = str_pad($realmode, 10, '-', STR_PAD_LEFT);
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$trans = array('-'=>'0', 'r'=>'4', 'w'=>'2', 'x'=>'1');
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$mode = strtr($mode,$trans);
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$newmode = $mode[0];
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$newmode .= $mode[1] + $mode[2] + $mode[3];
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$newmode .= $mode[4] + $mode[5] + $mode[6];
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$newmode .= $mode[7] + $mode[8] + $mode[9];
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return $newmode;
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}
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/**
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* Determines if the string provided contains binary characters.
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*
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* @since 2.7
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* @access private
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*
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* @param string $text String to test against
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* @return bool true if string is binary, false otherwise
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*/
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function is_binary( $text ) {
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return (bool) preg_match('|[^\x20-\x7E]|', $text); //chr(32)..chr(127)
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}
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}
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