<?php
/**
* Base WordPress Filesystem
*
* @package WordPress
* @subpackage Filesystem
*/
/**
* Base WordPress Filesystem class which Filesystem implementations extend.
*
* @since 2.5.0
*/
class WP_Filesystem_Base {
/**
* Whether to display debug data for the connection.
*
* @since 2.5.0
* @var bool
*/
public $verbose = false;
/**
* Cached list of local filepaths to mapped remote filepaths.
*
* @since 2.7.0
* @var array
*/
public $cache = array();
/**
* The Access method of the current connection, Set automatically.
*
* @since 2.5.0
* @var string
*/
public $method = '';
/**
* @var WP_Error
*/
public $errors = null;
/**
*/
public $options = array();
/**
* Returns the path on the remote filesystem of ABSPATH.
*
* @since 2.7.0
*
* @return string The location of the remote path.
*/
public function abspath() {
$folder = $this->find_folder( ABSPATH );
// Perhaps the FTP folder is rooted at the WordPress install.
// Check for wp-includes folder in root. Could have some false positives, but rare.
if ( ! $folder && $this->is_dir( '/' . WPINC ) ) {
$folder = '/';
}
return $folder;
}
/**
* Returns the path on the remote filesystem of WP_CONTENT_DIR.
*
* @since 2.7.0
*
* @return string The location of the remote path.
*/
public function wp_content_dir() {
return $this->find_folder( WP_CONTENT_DIR );
}
/**
* Returns the path on the remote filesystem of WP_PLUGIN_DIR.
*
* @since 2.7.0
*
* @return string The location of the remote path.
*/
public function wp_plugins_dir() {
return $this->find_folder( WP_PLUGIN_DIR );
}
/**
* Returns the path on the remote filesystem of the Themes Directory.
*
* @since 2.7.0
*
* @param string|false $theme Optional. The theme stylesheet or template for the directory.
* Default false.
* @return string The location of the remote path.
*/
public function wp_themes_dir( $theme = false ) {
$theme_root = get_theme_root( $theme );
// Account for relative theme roots.
if ( '/themes' === $theme_root || ! is_dir( $theme_root ) ) {
$theme_root = WP_CONTENT_DIR . $theme_root;
}
return $this->find_folder( $theme_root );
}
/**
* Returns the path on the remote filesystem of WP_LANG_DIR.
*
* @since 3.2.0
*
* @return string The location of the remote path.
*/
public function wp_lang_dir() {
return $this->find_folder( WP_LANG_DIR );
}
/**
* Locates a folder on the remote filesystem.
*
* @since 2.5.0
* @deprecated 2.7.0 use WP_Filesystem_Base::abspath() or WP_Filesystem_Base::wp_*_dir() instead.
* @see WP_Filesystem_Base::abspath()
* @see WP_Filesystem_Base::wp_content_dir()
* @see WP_Filesystem_Base::wp_plugins_dir()
* @see WP_Filesystem_Base::wp_themes_dir()
* @see WP_Filesystem_Base::wp_lang_dir()
*
* @param string $base Optional. The folder to start searching from. Default '.'.
* @param bool $verbose Optional. True to display debug information. Default false.
* @return string The location of the remote path.
*/
public function find_base_dir( $base = '.', $verbose = false ) {
_deprecated_function( __FUNCTION__, '2.7.0', 'WP_Filesystem_Base::abspath() or WP_Filesystem_Base::wp_*_dir()' );
$this->verbose = $verbose;
return $this->abspath();
}
/**
* Locates a folder on the remote filesystem.
*
* @since 2.5.0
* @deprecated 2.7.0 use WP_Filesystem_Base::abspath() or WP_Filesystem_Base::wp_*_dir() methods instead.
* @see WP_Filesystem_Base::abspath()
* @see WP_Filesystem_Base::wp_content_dir()
* @see WP_Filesystem_Base::wp_plugins_dir()
* @see WP_Filesystem_Base::wp_themes_dir()
* @see WP_Filesystem_Base::wp_lang_dir()
*
* @param string $base Optional. The folder to start searching from. Default '.'.
* @param bool $verbose Optional. True to display debug information. Default false.
* @return string The location of the remote path.
*/
public function get_base_dir( $base = '.', $verbose = false ) {
_deprecated_function( __FUNCTION__, '2.7.0', 'WP_Filesystem_Base::abspath() or WP_Filesystem_Base::wp_*_dir()' );
$this->verbose = $verbose;
return $this->abspath();
}
/**
* Locates a folder on the remote filesystem.
*
* Assumes that on Windows systems, Stripping off the Drive
* letter is OK Sanitizes \\ to / in Windows filepaths.
*
* @since 2.7.0
*
* @param string $folder the folder to locate.
* @return string|false The location of the remote path, false on failure.
*/
public function find_folder( $folder ) {
if ( isset( $this->cache[ $folder ] ) ) {
return $this->cache[ $folder ];
}
if ( stripos( $this->method, 'ftp' ) !== false ) {
$constant_overrides = array(
'FTP_BASE' => ABSPATH,
'FTP_CONTENT_DIR' => WP_CONTENT_DIR,
'FTP_PLUGIN_DIR' => WP_PLUGIN_DIR,
'FTP_LANG_DIR' => WP_LANG_DIR,
);
// Direct matches ( folder = CONSTANT/ ).
foreach ( $constant_overrides as $constant => $dir ) {
if ( ! defined( $constant ) ) {
continue;
}
if ( $folder === $dir ) {
return trailingslashit( constant( $constant ) );
}
}
// Prefix matches ( folder = CONSTANT/subdir ),
foreach ( $constant_overrides as $constant => $dir ) {
if ( ! defined( $constant ) ) {
continue;
}
if ( 0 === stripos( $folder, $dir ) ) { // $folder starts with $dir.
$potential_folder = preg_replace( '#^' . preg_quote( $dir, '#' ) . '/#i', trailingslashit( constant( $constant ) ), $folder );
$potential_folder = trailingslashit( $potential_folder );
if ( $this->is_dir( $potential_folder ) ) {
$this->cache[ $folder ] = $potential_folder;
return $potential_folder;
}
}
}
} elseif ( 'direct' === $this->method ) {
$folder = str_replace( '\\', '/', $folder ); // Windows path sanitisation.
return trailingslashit( $folder );
}
$folder = preg_replace( '|^([a-z]{1}):|i', '', $folder ); // Strip out Windows drive letter if it's there.
$folder = str_replace( '\\', '/', $folder ); // Windows path sanitisation.
if ( isset( $this->cache[ $folder ] ) ) {
return $this->cache[ $folder ];
}
if ( $this->exists( $folder ) ) { // Folder exists at that absolute path.
$folder = trailingslashit( $folder );
$this->cache[ $folder ] = $folder;
return $folder;
}
$return = $this->search_for_folder( $folder );
if ( $return ) {
$this->cache[ $folder ] = $return;
}
return $return;
}
/**
* Locates a folder on the remote filesystem.
*
* Expects Windows sanitized path.
*
* @since 2.7.0
*
* @param string $folder The folder to locate.
* @param string $base The folder to start searching from.
* @param bool $loop If the function has recursed. Internal use only.
* @return string|false The location of the remote path, false to cease looping.
*/
public function search_for_folder( $folder, $base = '.', $loop = false ) {
if ( empty( $base ) || '.' === $base ) {
$base = trailingslashit( $this->cwd() );
}
$folder = untrailingslashit( $folder );
if ( $this->verbose ) {
/* translators: 1: Folder to locate, 2: Folder to start searching from. */
printf( "\n" . __( 'Looking for %1$s in %2$s' ) . "<br/>\n", $folder, $base );
}
$folder_parts = explode( '/', $folder );
$folder_part_keys = array_keys( $folder_parts );
$last_index = array_pop( $folder_part_keys );
$last_path = $folder_parts[ $last_index ];
$files = $this->dirlist( $base );
foreach ( $folder_parts as $index => $key ) {
if ( $index === $last_index ) {
continue; // We want this to be caught by the next code block.
}
/*
* Working from /home/ to /user/ to /wordpress/ see if that file exists within
* the current folder, If it's found, change into it and follow through looking
* for it. If it can't find WordPress down that route, it'll continue onto the next
* folder level, and see if that matches, and so on. If it reaches the end, and still
* can't find it, it'll return false for the entire function.
*/
if ( isset( $files[ $key ] ) ) {
// Let's try that folder:
$newdir = trailingslashit( path_join( $base, $key ) );
if ( $this->verbose ) {
/* translators: %s: Directory name. */
printf( "\n" . __( 'Changing to %s' ) . "<br/>\n", $newdir );
}
// Only search for the remaining path tokens in the directory, not the full path again.
$newfolder = implode( '/', array_slice( $folder_parts, $index + 1 ) );
$ret = $this->search_for_folder( $newfolder, $newdir, $loop );
if ( $ret ) {
return $ret;
}
}
}
// 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.
if ( isset( $files[ $last_path ] ) ) {
if ( $this->verbose ) {
/* translators: %s: Directory name. */
printf( "\n" . __( 'Found %s' ) . "<br/>\n", $base . $last_path );
}
return trailingslashit( $base . $last_path );
}
// Prevent this function from looping again.
// No need to proceed if we've just searched in `/`.
if ( $loop || '/' === $base ) {
return false;
}
// As an extra last resort, Change back to / if the folder wasn't found.
// This comes into effect when the CWD is /home/user/ but WP is at /var/www/....
return $this->search_for_folder( $folder, '/', true );
}
/**
* Returns the *nix-style file permissions for a file.
*
* From the PHP documentation page for fileperms().
*
* @link https://www.php.net/manual/en/function.fileperms.php
*
* @since 2.5.0
*
* @param string $file String filename.
* @return string The *nix-style representation of permissions.
*/
public function gethchmod( $file ) {
$perms = intval( $this->getchmod( $file ), 8 );
if ( ( $perms & 0xC000 ) === 0xC000 ) { // Socket.
$info = 's';
} elseif ( ( $perms & 0xA000 ) === 0xA000 ) { // Symbolic Link.
$info = 'l';
} elseif ( ( $perms & 0x8000 ) === 0x8000 ) { // Regular.
$info = '-';
} elseif ( ( $perms & 0x6000 ) === 0x6000 ) { // Block special.
$info = 'b';
} elseif ( ( $perms & 0x4000 ) === 0x4000 ) { // Directory.
$info = 'd';
} elseif ( ( $perms & 0x2000 ) === 0x2000 ) { // Character special.
$info = 'c';
} elseif ( ( $perms & 0x1000 ) === 0x1000 ) { // FIFO pipe.
$info = 'p';
} else { // Unknown.
$info = 'u';
}
// Owner.
$info .= ( ( $perms & 0x0100 ) ? 'r' : '-' );
$info .= ( ( $perms & 0x0080 ) ? 'w' : '-' );
$info .= ( ( $perms & 0x0040 ) ?
( ( $perms & 0x0800 ) ? 's' : 'x' ) :
( ( $perms & 0x0800 ) ? 'S' : '-' ) );
// Group.
$info .= ( ( $perms & 0x0020 ) ? 'r' : '-' );
$info .= ( ( $perms & 0x0010 ) ? 'w' : '-' );
$info .= ( ( $perms & 0x0008 ) ?
( ( $perms & 0x0400 ) ? 's' : 'x' ) :
( ( $perms & 0x0400 ) ? 'S' : '-' ) );
// World.
$info .= ( ( $perms & 0x0004 ) ? 'r' : '-' );
$info .= ( ( $perms & 0x0002 ) ? 'w' : '-' );
$info .= ( ( $perms & 0x0001 ) ?
( ( $perms & 0x0200 ) ? 't' : 'x' ) :
( ( $perms & 0x0200 ) ? 'T' : '-' ) );
return $info;
}
/**
* Gets the permissions of the specified file or filepath in their octal format.
*
* @since 2.5.0
*
* @param string $file Path to the file.
* @return string Mode of the file (the last 3 digits).
*/
public function getchmod( $file ) {
return '777';
}
/**
* Converts *nix-style file permissions to a octal number.
*
* Converts '-rw-r--r--' to 0644
* From "info at rvgate dot nl"'s comment on the PHP documentation for chmod()
*
* @link https://www.php.net/manual/en/function.chmod.php#49614
*
* @since 2.5.0
*
* @param string $mode string The *nix-style file permissions.
* @return string Octal representation of permissions.
*/
public function getnumchmodfromh( $mode ) {
$realmode = '';
$legal = array( '', 'w', 'r', 'x', '-' );
$attarray = preg_split( '//', $mode );
for ( $i = 0, $c = count( $attarray ); $i < $c; $i++ ) {
$key = array_search( $attarray[ $i ], $legal, true );
if ( $key ) {
$realmode .= $legal[ $key ];
}
}
$mode = str_pad( $realmode, 10, '-', STR_PAD_LEFT );
$trans = array(
'-' => '0',
'r' => '4',
'w' => '2',
'x' => '1',
);
$mode = strtr( $mode, $trans );
$newmode = $mode[0];
$newmode .= $mode[1] + $mode[2] + $mode[3];
$newmode .= $mode[4] + $mode[5] + $mode[6];
$newmode .= $mode[7] + $mode[8] + $mode[9];
return $newmode;
}
/**
* Determines if the string provided contains binary characters.
*
* @since 2.7.0
*
* @param string $text String to test against.
* @return bool True if string is binary, false otherwise.
*/
public function is_binary( $text ) {
return (bool) preg_match( '|[^\x20-\x7E]|', $text ); // chr(32)..chr(127)
}
/**
* Changes the owner of a file or directory.
*
* Default behavior is to do nothing, override this in your subclass, if desired.
*
* @since 2.5.0
*
* @param string $file Path to the file or directory.
* @param string|int $owner A user name or number.
* @param bool $recursive Optional. If set to true, changes file owner recursively.
* Default false.
* @return bool True on success, false on failure.
*/
public function chown( $file, $owner, $recursive = false ) {
return false;
}
/**
* Connects filesystem.
*
* @since 2.5.0
* @abstract
*
* @return bool True on success, false on failure (always true for WP_Filesystem_Direct).
*/
public function connect() {
return true;
}
/**
* Reads entire file into a string.
*
* @since 2.5.0
* @abstract
*
* @param string $file Name of the file to read.
* @return string|false Read data on success, false on failure.
*/
public function get_contents( $file ) {
return false;
}
/**
* Reads entire file into an array.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to the file.
* @return array|false File contents in an array on success, false on failure.
*/
public function get_contents_array( $file ) {
return false;
}
/**
* Writes a string to a file.
*
* @since 2.5.0
* @abstract
*
* @param string $file Remote path to the file where to write the data.
* @param string $contents The data to write.
* @param int|false $mode Optional. The file permissions as octal number, usually 0644.
* Default false.
* @return bool True on success, false on failure.
*/
public function put_contents( $file, $contents, $mode = false ) {
return false;
}
/**
* Gets the current working directory.
*
* @since 2.5.0
* @abstract
*
* @return string|false The current working directory on success, false on failure.
*/
public function cwd() {
return false;
}
/**
* Changes current directory.
*
* @since 2.5.0
* @abstract
*
* @param string $dir The new current directory.
* @return bool True on success, false on failure.
*/
public function chdir( $dir ) {
return false;
}
/**
* Changes the file group.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to the file.
* @param string|int $group A group name or number.
* @param bool $recursive Optional. If set to true, changes file group recursively.
* Default false.
* @return bool True on success, false on failure.
*/
public function chgrp( $file, $group, $recursive = false ) {
return false;
}
/**
* Changes filesystem permissions.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to the file.
* @param int|false $mode Optional. The permissions as octal number, usually 0644 for files,
* 0755 for directories. Default false.
* @param bool $recursive Optional. If set to true, changes file permissions recursively.
* Default false.
* @return bool True on success, false on failure.
*/
public function chmod( $file, $mode = false, $recursive = false ) {
return false;
}
/**
* Gets the file owner.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to the file.
* @return string|false Username of the owner on success, false on failure.
*/
public function owner( $file ) {
return false;
}
/**
* Gets the file's group.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to the file.
* @return string|false The group on success, false on failure.
*/
public function group( $file ) {
return false;
}
/**
* Copies a file.
*
* @since 2.5.0
* @abstract
*
* @param string $source Path to the source file.
* @param string $destination Path to the destination file.
* @param bool $overwrite Optional. Whether to overwrite the destination file if it exists.
* Default false.
* @param int|false $mode Optional. The permissions as octal number, usually 0644 for files,
* 0755 for dirs. Default false.
* @return bool True on success, false on failure.
*/
public function copy( $source, $destination, $overwrite = false, $mode = false ) {
return false;
}
/**
* Moves a file.
*
* @since 2.5.0
* @abstract
*
* @param string $source Path to the source file.
* @param string $destination Path to the destination file.
* @param bool $overwrite Optional. Whether to overwrite the destination file if it exists.
* Default false.
* @return bool True on success, false on failure.
*/
public function move( $source, $destination, $overwrite = false ) {
return false;
}
/**
* Deletes a file or directory.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to the file or directory.
* @param bool $recursive Optional. If set to true, deletes files and folders recursively.
* Default false.
* @param string|false $type Type of resource. 'f' for file, 'd' for directory.
* Default false.
* @return bool True on success, false on failure.
*/
public function delete( $file, $recursive = false, $type = false ) {
return false;
}
/**
* Checks if a file or directory exists.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file or directory.
* @return bool Whether $file exists or not.
*/
public function exists( $file ) {
return false;
}
/**
* Checks if resource is a file.
*
* @since 2.5.0
* @abstract
*
* @param string $file File path.
* @return bool Whether $file is a file.
*/
public function is_file( $file ) {
return false;
}
/**
* Checks if resource is a directory.
*
* @since 2.5.0
* @abstract
*
* @param string $path Directory path.
* @return bool Whether $path is a directory.
*/
public function is_dir( $path ) {
return false;
}
/**
* Checks if a file is readable.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file.
* @return bool Whether $file is readable.
*/
public function is_readable( $file ) {
return false;
}
/**
* Checks if a file or directory is writable.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file or directory.
* @return bool Whether $file is writable.
*/
public function is_writable( $file ) {
return false;
}
/**
* Gets the file's last access time.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file.
* @return int|false Unix timestamp representing last access time, false on failure.
*/
public function atime( $file ) {
return false;
}
/**
* Gets the file modification time.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file.
* @return int|false Unix timestamp representing modification time, false on failure.
*/
public function mtime( $file ) {
return false;
}
/**
* Gets the file size (in bytes).
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file.
* @return int|false Size of the file in bytes on success, false on failure.
*/
public function size( $file ) {
return false;
}
/**
* Sets the access and modification times of a file.
*
* Note: If $file doesn't exist, it will be created.
*
* @since 2.5.0
* @abstract
*
* @param string $file Path to file.
* @param int $time Optional. Modified time to set for file.
* Default 0.
* @param int $atime Optional. Access time to set for file.
* Default 0.
* @return bool True on success, false on failure.
*/
public function touch( $file, $time = 0, $atime = 0 ) {
return false;
}
/**
* Creates a directory.
*
* @since 2.5.0
* @abstract
*
* @param string $path Path for new directory.
* @param int|false $chmod Optional. The permissions as octal number (or false to skip chmod).
* Default false.
* @param string|int|false $chown Optional. A user name or number (or false to skip chown).
* Default false.
* @param string|int|false $chgrp Optional. A group name or number (or false to skip chgrp).
* Default false.
* @return bool True on success, false on failure.
*/
public function mkdir( $path, $chmod = false, $chown = false, $chgrp = false ) {
return false;
}
/**
* Deletes a directory.
*
* @since 2.5.0
* @abstract
*
* @param string $path Path to directory.
* @param bool $recursive Optional. Whether to recursively remove files/directories.
* Default false.
* @return bool True on success, false on failure.
*/
public function rmdir( $path, $recursive = false ) {
return false;
}
/**
* Gets details for files in a directory or a specific file.
*
* @since 2.5.0
* @abstract
*
* @param string $path Path to directory or file.
* @param bool $include_hidden Optional. Whether to include details of hidden ("." prefixed) files.
* Default true.
* @param bool $recursive Optional. Whether to recursively include file details in nested directories.
* Default false.
* @return array|false {
* Array of files. False if unable to list directory contents.
*
* @type string $name Name of the file or directory.
* @type string $perms *nix representation of permissions.
* @type string $permsn Octal representation of permissions.
* @type string $owner Owner name or ID.
* @type int $size Size of file in bytes.
* @type int $lastmodunix Last modified unix timestamp.
* @type mixed $lastmod Last modified month (3 letter) and day (without leading 0).
* @type int $time Last modified time.
* @type string $type Type of resource. 'f' for file, 'd' for directory.
* @type mixed $files If a directory and `$recursive` is true, contains another array of files.
* }
*/
public function dirlist( $path, $include_hidden = true, $recursive = false ) {
return false;
}
}