<?php
/**
* WordPress FTP Sockets Filesystem.
*
* @package WordPress
* @subpackage Filesystem
*/
/**
* WordPress Filesystem Class for implementing FTP Sockets.
*
* @since 2.5.0
*
* @see WP_Filesystem_Base
* @phpstan-type Options array{
* hostname: string,
* username: string,
* password: string,
* port: non-negative-int,
* }
* @phpstan-import-type FileListing from WP_Filesystem_Base
*/
class WP_Filesystem_ftpsockets extends WP_Filesystem_Base {
/**
* @since 2.5.0
* @var ftp
*/
public $ftp;
/**
* @since 7.1.0
* @var array
* @phpstan-var Options
*/
public $options;
/**
* Constructor.
*
* @since 2.5.0
*
* @param array $opt {
* Array of connection options.
*
* @type string $hostname Required. FTP server hostname.
* @type string $username Required. FTP username.
* @type string $password Required. FTP password.
* @type int $port Optional. FTP server port. Default 21.
* }
* @phpstan-param array{
* hostname: non-empty-string,
* username: non-empty-string,
* password: string,
* port?: non-negative-int,
* }|null $opt
*/
public function __construct( $opt = null ) {
$this->method = 'ftpsockets';
$this->errors = new WP_Error();
$this->options = array(
'port' => 21,
'hostname' => '',
'username' => '',
'password' => '',
);
// Check if possible to use ftp functions.
if ( ! require_once ABSPATH . 'wp-admin/includes/class-ftp.php' ) {
return;
}
$this->ftp = new ftp();
if ( ! is_array( $opt ) ) {
$opt = array();
}
if ( ! empty( $opt['port'] ) ) {
$this->options['port'] = (int) $opt['port'];
}
if ( empty( $opt['hostname'] ) ) {
$this->errors->add( 'empty_hostname', __( 'FTP hostname is required' ) );
} else {
$this->options['hostname'] = $opt['hostname'];
}
// Check if the options provided are OK.
if ( empty( $opt['username'] ) ) {
$this->errors->add( 'empty_username', __( 'FTP username is required' ) );
} else {
$this->options['username'] = $opt['username'];
}
if ( empty( $opt['password'] ) ) {
$this->errors->add( 'empty_password', __( 'FTP password is required' ) );
} else {
$this->options['password'] = $opt['password'];
}
}
/**
* Connects filesystem.
*
* @since 2.5.0
*
* @return bool True on success, false on failure.
*/
public function connect() {
/*
* Bail if the constructor recorded a configuration error. Connection and
* authentication errors are excluded so that a failed connection attempt
* can be retried on the same instance.
*/
if ( $this->errors->has_errors() && ! array_intersect( array( 'connect', 'auth' ), $this->errors->get_error_codes() ) ) {
return false;
}
if ( ! $this->ftp ) {
return false;
}
$this->ftp->SetTimeout( FS_CONNECT_TIMEOUT );
if ( ! $this->ftp->SetServer( $this->options['hostname'], $this->options['port'] ) ) {
$this->errors->add(
'connect',
sprintf(
/* translators: %s: hostname:port */
__( 'Failed to connect to FTP Server %s' ),
$this->options['hostname'] . ':' . $this->options['port']
)
);
return false;
}
if ( ! $this->ftp->connect() ) {
$this->errors->add(
'connect',
sprintf(
/* translators: %s: hostname:port */
__( 'Failed to connect to FTP Server %s' ),
$this->options['hostname'] . ':' . $this->options['port']
)
);
return false;
}
if ( ! $this->ftp->login( $this->options['username'], $this->options['password'] ) ) {
$this->errors->add(
'auth',
sprintf(
/* translators: %s: Username. */
__( 'Username/Password incorrect for %s' ),
$this->options['username']
)
);
return false;
}
$this->ftp->SetType( FTP_BINARY );
$this->ftp->Passive( true );
$this->ftp->SetTimeout( FS_TIMEOUT );
return true;
}
/**
* Reads entire file into a string.
*
* @since 2.5.0
*
* @param string $file Name of the file to read.
* @return string|false Read data on success, false if no temporary file could be opened,
* or if the file couldn't be retrieved.
*/
public function get_contents( $file ) {
if ( ! $this->exists( $file ) ) {
return false;
}
$tempfile = wp_tempnam( $file );
$temphandle = fopen( $tempfile, 'w+' );
if ( ! $temphandle ) {
unlink( $tempfile );
return false;
}
mbstring_binary_safe_encoding();
if ( ! $this->ftp->fget( $temphandle, $file ) ) {
fclose( $temphandle );
unlink( $tempfile );
reset_mbstring_encoding();
return ''; // Blank document. File does exist, it's just blank.
}
reset_mbstring_encoding();
fseek( $temphandle, 0 ); // Skip back to the start of the file being written to.
$contents = '';
while ( ! feof( $temphandle ) ) {
$contents .= fread( $temphandle, 8 * KB_IN_BYTES );
}
fclose( $temphandle );
unlink( $tempfile );
return $contents;
}
/**
* Reads entire file into an array.
*
* @since 2.5.0
*
* @param string $file Path to the file.
* @return string[]|false File contents in an array on success, false on failure.
*/
public function get_contents_array( $file ) {
$contents = $this->get_contents( $file );
if ( is_string( $contents ) ) {
return explode( "\n", $contents );
}
return false;
}
/**
* Writes a string to a file.
*
* @since 2.5.0
*
* @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 ) {
$tempfile = wp_tempnam( $file );
$temphandle = @fopen( $tempfile, 'w+' );
if ( ! $temphandle ) {
unlink( $tempfile );
return false;
}
// The FTP class uses string functions internally during file download/upload.
mbstring_binary_safe_encoding();
$bytes_written = fwrite( $temphandle, $contents );
if ( false === $bytes_written || strlen( $contents ) !== $bytes_written ) {
fclose( $temphandle );
unlink( $tempfile );
reset_mbstring_encoding();
return false;
}
fseek( $temphandle, 0 ); // Skip back to the start of the file being written to.
$ret = (bool) $this->ftp->fput( $file, $temphandle );
reset_mbstring_encoding();
fclose( $temphandle );
unlink( $tempfile );
$this->chmod( $file, $mode );
return $ret;
}
/**
* Gets the current working directory.
*
* @since 2.5.0
*
* @return string|false The current working directory on success, false on failure.
*/
public function cwd() {
$cwd = $this->ftp->pwd();
if ( ! is_string( $cwd ) ) {
return false;
}
if ( $cwd ) {
$cwd = trailingslashit( $cwd );
}
return $cwd;
}
/**
* Changes current directory.
*
* @since 2.5.0
*
* @param string $dir The new current directory.
* @return bool True on success, false on failure.
*/
public function chdir( $dir ) {
return (bool) $this->ftp->chdir( $dir );
}
/**
* Changes filesystem permissions.
*
* @since 2.5.0
*
* @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 ) {
if ( ! $mode ) {
if ( $this->is_file( $file ) ) {
$mode = FS_CHMOD_FILE;
} elseif ( $this->is_dir( $file ) ) {
$mode = FS_CHMOD_DIR;
} else {
return false;
}
}
// chmod any sub-objects if recursive.
if ( $recursive && $this->is_dir( $file ) ) {
$filelist = $this->dirlist( $file );
foreach ( (array) $filelist as $filename => $filemeta ) {
$this->chmod( $file . '/' . $filename, $mode, $recursive );
}
}
// chmod the file or directory.
return (bool) $this->ftp->chmod( $file, $mode );
}
/**
* Gets the file owner.
*
* @since 2.5.0
*
* @param string $file Path to the file.
* @return string|int<1, max>|false Username of the owner on success, false on failure.
*/
public function owner( $file ) {
$dir = $this->dirlist( $file );
return $dir[ $file ]['owner'] ?? '';
}
/**
* 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 ) {
$dir = $this->dirlist( $file );
return $dir[ $file ]['permsn'] ?? '';
}
/**
* Gets the file's group.
*
* @since 2.5.0
*
* @param string $file Path to the file.
* @return string|int<1, max>|false The group on success, false on failure.
*/
public function group( $file ) {
$dir = $this->dirlist( $file );
return $dir[ $file ]['group'] ?? '';
}
/**
* Copies a file.
*
* @since 2.5.0
*
* @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 ) {
if ( ! $overwrite && $this->exists( $destination ) ) {
return false;
}
$content = $this->get_contents( $source );
if ( false === $content ) {
return false;
}
return $this->put_contents( $destination, $content, $mode );
}
/**
* Moves a file or directory.
*
* After moving files or directories, OPcache will need to be invalidated.
*
* If moving a directory fails, `copy_dir()` can be used for a recursive copy.
*
* Use `move_dir()` for moving directories with OPcache invalidation and a
* fallback to `copy_dir()`.
*
* @since 2.5.0
*
* @param string $source Path to the source file or directory.
* @param string $destination Path to the destination file or directory.
* @param bool $overwrite Optional. Whether to overwrite the destination if it exists.
* Default false.
* @return bool True on success, false on failure.
*/
public function move( $source, $destination, $overwrite = false ) {
return (bool) $this->ftp->rename( $source, $destination );
}
/**
* Deletes a file or directory.
*
* @since 2.5.0
*
* @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 ) {
if ( empty( $file ) ) {
return false;
}
if ( 'f' === $type || $this->is_file( $file ) ) {
return (bool) $this->ftp->delete( $file );
}
if ( ! $recursive ) {
return (bool) $this->ftp->rmdir( $file );
}
return (bool) $this->ftp->mdel( $file );
}
/**
* Checks if a file or directory exists.
*
* @since 2.5.0
* @since 6.3.0 Returns false for an empty path.
*
* @param string $path Path to file or directory.
* @return bool Whether $path exists or not.
*/
public function exists( $path ) {
/*
* Check for empty path. If ftp::nlist() receives an empty path,
* it checks the current working directory and may return true.
*
* See https://core.trac.wordpress.org/ticket/33058.
*/
if ( '' === $path ) {
return false;
}
$list = $this->ftp->nlist( $path );
if ( empty( $list ) && $this->is_dir( $path ) ) {
return true; // File is an empty directory.
}
return ! empty( $list ); // Empty list = no file, so invert.
// Return $this->ftp->is_exists($file); has issues with ABOR+426 responses on the ncFTPd server.
}
/**
* Checks if resource is a file.
*
* @since 2.5.0
*
* @param string $file File path.
* @return bool Whether $file is a file.
*/
public function is_file( $file ) {
if ( $this->is_dir( $file ) ) {
return false;
}
if ( $this->exists( $file ) ) {
return true;
}
return false;
}
/**
* Checks if resource is a directory.
*
* @since 2.5.0
*
* @param string $path Directory path.
* @return bool Whether $path is a directory.
*/
public function is_dir( $path ) {
$cwd = $this->cwd();
if ( ! $cwd ) {
return false;
}
if ( $this->chdir( $path ) ) {
$this->chdir( $cwd );
return true;
}
return false;
}
/**
* Checks if a file is readable.
*
* @since 2.5.0
*
* @param string $file Path to file.
* @return bool Whether $file is readable.
*/
public function is_readable( $file ) {
return true;
}
/**
* Checks if a file or directory is writable.
*
* @since 2.5.0
*
* @param string $path Path to file or directory.
* @return bool Whether $path is writable.
*/
public function is_writable( $path ) {
return true;
}
/**
* Gets the file's last access time.
*
* @since 2.5.0
*
* @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
*
* @param string $file Path to file.
* @return int|false Unix timestamp representing modification time, false on failure.
*/
public function mtime( $file ) {
$modified_time = $this->ftp->mdtm( $file );
if ( false === $modified_time ) {
return false;
}
return (int) $modified_time;
}
/**
* Gets the file size (in bytes).
*
* @since 2.5.0
*
* @param string $file Path to file.
* @return int|false Size of the file in bytes on success, false on failure.
*/
public function size( $file ) {
$size = $this->ftp->filesize( $file );
if ( false === $size ) {
return false;
}
return (int) $size;
}
/**
* Sets the access and modification times of a file.
*
* Note: If $file doesn't exist, it will be created.
*
* @since 2.5.0
*
* @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
*
* @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 ) {
$path = untrailingslashit( $path );
if ( empty( $path ) ) {
return false;
}
if ( ! $this->ftp->mkdir( $path ) ) {
return false;
}
if ( ! $chmod ) {
$chmod = FS_CHMOD_DIR;
}
$this->chmod( $path, $chmod );
return true;
}
/**
* Deletes a directory.
*
* @since 2.5.0
*
* @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 $this->delete( $path, $recursive );
}
/**
* Gets details for files in a directory or a specific file.
*
* @since 2.5.0
*
* @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 int|string|false $time Last modified time as a Unix timestamp, 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.
* }
* }
* @phpstan-return array<string, FileListing>|false
*/
public function dirlist( $path = '.', $include_hidden = true, $recursive = false ) {
if ( $this->is_file( $path ) ) {
$limit_file = basename( $path );
$path = dirname( $path ) . '/';
} else {
$limit_file = false;
}
mbstring_binary_safe_encoding();
/** @var array<string, FileListing>|false $list */
$list = $this->ftp->dirlist( $path );
if ( ! is_array( $list ) || ( empty( $list ) && ! $this->exists( $path ) ) ) {
reset_mbstring_encoding();
return false;
}
$path = trailingslashit( $path );
$ret = array();
foreach ( $list as $struc ) {
if ( '.' === $struc['name'] || '..' === $struc['name'] ) {
continue;
}
if ( ! $include_hidden && '.' === $struc['name'][0] ) {
continue;
}
if ( $limit_file && $struc['name'] !== $limit_file ) {
continue;
}
if ( 'd' === $struc['type'] ) {
if ( $recursive ) {
$struc['files'] = $this->dirlist( $path . $struc['name'], $include_hidden, $recursive );
} else {
$struc['files'] = array();
}
}
// Replace symlinks formatted as "source -> target" with just the source name.
if ( $struc['islink'] ?? false ) {
$struc['name'] = (string) preg_replace( '/(\s*->\s*.*)$/', '', $struc['name'] );
}
// Add the octal representation of the file permissions.
if ( isset( $struc['perms'] ) ) {
$struc['permsn'] = $this->getnumchmodfromh( $struc['perms'] );
}
$ret[ $struc['name'] ] = $struc;
}
reset_mbstring_encoding();
return $ret;
}
/**
* Destructor.
*
* @since 2.5.0
*/
public function __destruct() {
$this->ftp->quit();
}
}