WordPress/wp-admin/includes/class-wp-filesystem-base.php

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<?php
/**
* Base WordPress Filesystem
*
* @package WordPress
* @subpackage Filesystem
*/
/**
* Base WordPress Filesystem class which Filesystem implementations extend.
*
* @since 2.5.0
*/
Code Modernization: Add `AllowDynamicProperties` attribute to all (parent) classes. Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0. There are a number of ways to mitigate this: * If it is an accidental typo for a declared property: fix the typo. * For known properties: declare them on the class. * For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in. * For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes. Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1. To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP. The logic used for this commit is as follows: * If a class already has the attribute: no action needed. * If a class does not `extend`: add the attribute. * If a class does `extend`: - If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties). - If it extends a PHP native class: add the attribute. - If it extends a class from one of WP's external dependencies: add the attribute. * In all other cases: no action — the attribute should not be needed as child classes inherit from the parent. Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details. This commit only affects classes in the `src` directory of WordPress core. * Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033. * While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately. Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties]. Follow-up to [53922]. Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath. See #56513, #56034. Built from https://develop.svn.wordpress.org/trunk@54133 git-svn-id: http://core.svn.wordpress.org/trunk@53692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-09-12 11:47:14 -04:00
#[AllowDynamicProperties]
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 an 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 $path Path to file or directory.
* @return bool Whether $path exists or not.
*/
public function exists( $path ) {
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 $path Path to file or directory.
* @return bool Whether $path is writable.
*/
public function is_writable( $path ) {
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 arrays containing file information. False if unable to list directory contents.
*
* @type array $0... {
* Array of file information. Note that some elements may not be available on all filesystems.
*
* @type string $name Name of the file or directory.
* @type string $perms *nix representation of permissions.
* @type string $permsn Octal representation of permissions.
* @type int|string|false $number File number. May be a numeric string. False if not available.
* @type string|false $owner Owner name or ID, or false if not available.
* @type string|false $group File permissions group, or false if not available.
* @type int|string|false $size Size of file in bytes. May be a numeric string.
* False if not available.
* @type int|string|false $lastmodunix Last modified unix timestamp. May be a numeric string.
* False if not available.
* @type string|false $lastmod Last modified month (3 letters) and day (without leading 0), or
* false if not available.
* @type string|false $time Last modified time, or false if not available.
* @type string $type Type of resource. 'f' for file, 'd' for directory, 'l' for link.
* @type array|false $files If a directory and `$recursive` is true, contains another array of
* files. False if unable to list directory contents.
* }
* }
*/
public function dirlist( $path, $include_hidden = true, $recursive = false ) {
return false;
}
}