FM / includes

/var/www/qr4y.com/www/wp-admin/includes/

/var/www/qr4y.com/www/wp-admin/includes

Name	Size	Mode	Actions
admin-filters.php	8034	0644	edit dl rm
admin.php	3628	0644	edit dl rm
ajax-actions.php	153540	0644	edit dl rm
bookmark.php	11678	0644	edit dl rm
class-automatic-upgrader-skin.php	3663	0644	edit dl rm
class-bulk-plugin-upgrader-skin.php	2590	0644	edit dl rm
class-bulk-theme-upgrader-skin.php	2660	0644	edit dl rm
class-bulk-upgrader-skin.php	6661	0644	edit dl rm
class-core-upgrader.php	15198	0644	edit dl rm
class-custom-background.php	21750	0644	edit dl rm
class-custom-image-header.php	49249	0644	edit dl rm
class-file-upload-upgrader.php	4163	0644	edit dl rm
class-ftp-pure.php	5426	0644	edit dl rm
class-ftp-sockets.php	8479	0644	edit dl rm
class-ftp.php	27342	0644	edit dl rm
class-language-pack-upgrader-skin.php	2870	0644	edit dl rm
class-language-pack-upgrader.php	15528	0644	edit dl rm
class-pclzip.php	196667	0644	edit dl rm
class-plugin-installer-skin.php	11947	0644	edit dl rm
class-plugin-upgrader-skin.php	3278	0644	edit dl rm
class-plugin-upgrader.php	23249	0644	edit dl rm
class-theme-installer-skin.php	12974	0644	edit dl rm
class-theme-upgrader-skin.php	4176	0644	edit dl rm
class-theme-upgrader.php	26783	0644	edit dl rm
class-walker-category-checklist.php	5092	0644	edit dl rm
class-walker-nav-menu-checklist.php	5781	0644	edit dl rm
class-walker-nav-menu-edit.php	14298	0644	edit dl rm
class-wp-ajax-upgrader-skin.php	4193	0644	edit dl rm
class-wp-application-passwords-list-table.php	6949	0644	edit dl rm
class-wp-automatic-updater.php	61905	0644	edit dl rm
class-wp-comments-list-table.php	34620	0644	edit dl rm
class-wp-community-events.php	18647	0644	edit dl rm
class-wp-debug-data.php	71043	0644	edit dl rm
class-wp-filesystem-base.php	25622	0644	edit dl rm
class-wp-filesystem-direct.php	19166	0644	edit dl rm
class-wp-filesystem-ftpext.php	24926	0644	edit dl rm
class-wp-filesystem-ftpsockets.php	20356	0644	edit dl rm
class-wp-filesystem-ssh2.php	25815	0644	edit dl rm
class-wp-importer.php	8279	0644	edit dl rm
class-wp-internal-pointers.php	4593	0644	edit dl rm
class-wp-links-list-table.php	10103	0644	edit dl rm
class-wp-list-table-compat.php	1497	0644	edit dl rm
class-wp-list-table.php	54873	0644	edit dl rm
class-wp-media-list-table.php	27786	0644	edit dl rm
class-wp-ms-sites-list-table.php	23598	0644	edit dl rm
class-wp-ms-themes-list-table.php	30266	0644	edit dl rm
class-wp-ms-users-list-table.php	16188	0644	edit dl rm
class-wp-plugin-install-list-table.php	25076	0644	edit dl rm
class-wp-plugins-list-table.php	61549	0644	edit dl rm
class-wp-post-comments-list-table.php	1453	0644	edit dl rm
class-wp-posts-list-table.php	68457	0644	edit dl rm
class-wp-privacy-data-export-requests-list-table.php	6026	0644	edit dl rm
class-wp-privacy-data-removal-requests-list-table.php	6178	0644	edit dl rm
class-wp-privacy-policy-content.php	33021	0644	edit dl rm
class-wp-privacy-requests-table.php	14806	0644	edit dl rm
class-wp-screen.php	37566	0644	edit dl rm
class-wp-site-health-auto-updates.php	14337	0644	edit dl rm
class-wp-site-health.php	131168	0644	edit dl rm
class-wp-site-icon.php	6489	0644	edit dl rm
class-wp-terms-list-table.php	21584	0644	edit dl rm
class-wp-theme-install-list-table.php	15703	0644	edit dl rm
class-wp-themes-list-table.php	10339	0644	edit dl rm
class-wp-upgrader-skin.php	7064	0644	edit dl rm
class-wp-upgrader-skins.php	1477	0644	edit dl rm
class-wp-upgrader.php	48367	0644	edit dl rm
class-wp-users-list-table.php	19351	0644	edit dl rm
comment.php	9457	0644	edit dl rm
continents-cities.php	20540	0644	edit dl rm
credits.php	5832	0644	edit dl rm
dashboard.php	70616	0644	edit dl rm
deprecated.php	41960	0644	edit dl rm
edit-tag-messages.php	1478	0644	edit dl rm
export.php	25976	0644	edit dl rm
file.php	98424	0644	edit dl rm
image-edit.php	44147	0644	edit dl rm
image.php	45172	0644	edit dl rm
import.php	6617	0644	edit dl rm
list-table.php	3802	0644	edit dl rm
media.php	120188	0644	edit dl rm
menu.php	9640	0644	edit dl rm
meta-boxes.php	66857	0644	edit dl rm
misc.php	46443	0644	edit dl rm
ms-admin-filters.php	1296	0644	edit dl rm
ms-deprecated.php	3770	0644	edit dl rm
ms.php	35959	0644	edit dl rm
nav-menu.php	49136	0644	edit dl rm
network.php	27038	0644	edit dl rm
noop.php	1148	0644	edit dl rm
options.php	4303	0644	edit dl rm
plugin-install.php	39187	0644	edit dl rm
plugin.php	93295	0644	edit dl rm
post.php	82229	0644	edit dl rm
privacy-tools.php	33732	0644	edit dl rm
revision.php	16629	0644	edit dl rm
schema.php	45583	0644	edit dl rm
screen.php	6390	0644	edit dl rm
taxonomy.php	8483	0644	edit dl rm
template.php	99830	0644	edit dl rm
theme-install.php	7010	0644	edit dl rm
theme.php	47533	0644	edit dl rm
translation-install.php	11048	0644	edit dl rm
update-core.php	86142	0644	edit dl rm
update.php	34829	0644	edit dl rm
upgrade.php	116674	0644	edit dl rm
user.php	23913	0644	edit dl rm
widgets.php	10546	0644	edit dl rm

Edit: /var/www/qr4y.com/www/wp-admin/includes/class-wp-filesystem-ssh2.php (25815B)

<?php
/**
 * WordPress Filesystem Class for implementing SSH2
 *
 * To use this class you must follow these steps for PHP 5.2.6+
 *
 * {@link http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes}
 *
 * Compile libssh2 (Note: Only 0.14 is officially working with PHP 5.2.6+ right now, But many users have found the latest versions work)
 *
 * cd /usr/src
 * wget https://www.libssh2.org/download/libssh2-0.14.tar.gz
 * tar -zxvf libssh2-0.14.tar.gz
 * cd libssh2-0.14/
 * ./configure
 * make all install
 *
 * Note: Do not leave the directory yet!
 *
 * Enter: pecl install -f ssh2
 *
 * Copy the ssh.so file it creates to your PHP Module Directory.
 * Open up your PHP.INI file and look for where extensions are placed.
 * Add in your PHP.ini file: extension=ssh2.so
 *
 * Restart Apache!
 * Check phpinfo() streams to confirm that: ssh2.shell, ssh2.exec, ssh2.tunnel, ssh2.scp, ssh2.sftp  exist.
 *
 * Note: As of WordPress 2.8, this utilizes the PHP5+ function `stream_get_contents()`.
 *
 * @since 2.7.0
 *
 * @package WordPress
 * @subpackage Filesystem
 *
 * @phpstan-type Options array{
 *     hostname: string,
 *     username: string,
 *     password: string|null,
 *     port: non-negative-int,
 *     public_key?: non-empty-string,
 *     private_key?: non-empty-string,
 *     hostkey?: array{ hostkey: non-empty-string },
 * }
 * @phpstan-import-type FileListing from WP_Filesystem_Base
 */
class WP_Filesystem_SSH2 extends WP_Filesystem_Base {

/**
	 * @since 2.7.0
	 * @var resource|false
	 */
	public $link = false;

/**
	 * @since 2.7.0
	 * @var resource|false
	 */
	public $sftp_link;

/**
	 * @since 2.7.0
	 * @var bool
	 */
	public $keys = false;

/**
	 * @since 7.1.0
	 * @var array
	 * @phpstan-var Options
	 */
	public $options;

/**
	 * Constructor.
	 *
	 * @since 2.7.0
	 *
	 * @param array $opt {
	 *     Array of connection options.
	 *
	 *     @type string $hostname    Required. SSH server hostname.
	 *     @type string $username    Required. SSH username.
	 *     @type int    $port        Optional. SSH server port. Default 22.
	 *     @type string $password    Optional. SSH password. May be empty when using keys.
	 *     @type string $public_key  Optional. Path to public key file for publickey authentication.
	 *     @type string $private_key Optional. Path to private key file for publickey authentication.
	 * }
	 * @phpstan-param array{
	 *     hostname: non-empty-string,
	 *     username: non-empty-string,
	 *     port?: non-negative-int,
	 *     password?: string,
	 *     public_key?: non-empty-string,
	 *     private_key?: non-empty-string,
	 * }|null $opt
	 */
	public function __construct( $opt = null ) {
		$this->method  = 'ssh2';
		$this->errors  = new WP_Error();
		$this->options = array(
			'port'     => 22,
			'hostname' => '',
			'username' => '',
			'password' => null,
		);

// Check if possible to use ssh2 functions.
		if ( ! extension_loaded( 'ssh2' ) ) {
			$this->errors->add( 'no_ssh2_ext', __( 'The ssh2 PHP extension is not available' ) );
			return;
		}

if ( ! is_array( $opt ) ) {
			$opt = array();
		}

// Set defaults:
		if ( ! empty( $opt['port'] ) ) {
			$this->options['port'] = $opt['port'];
		}

if ( empty( $opt['hostname'] ) ) {
			$this->errors->add( 'empty_hostname', __( 'SSH2 hostname is required' ) );
		} else {
			$this->options['hostname'] = $opt['hostname'];
		}

// Check if the options provided are OK.
		if ( ! empty( $opt['public_key'] ) && ! empty( $opt['private_key'] ) ) {
			$this->options['public_key']  = $opt['public_key'];
			$this->options['private_key'] = $opt['private_key'];

$this->options['hostkey'] = array( 'hostkey' => 'ssh-rsa,ssh-ed25519' );

$this->keys = true;
		}

// A username is always required, whether authenticating with a password or with keys.
		if ( empty( $opt['username'] ) ) {
			$this->errors->add( 'empty_username', __( 'SSH2 username is required' ) );
		} else {
			$this->options['username'] = $opt['username'];
		}

if ( ! empty( $opt['password'] ) ) {
			$this->options['password'] = $opt['password'];
		} elseif ( ! $this->keys ) {
			// Password can be blank if we are using keys.
			$this->errors->add( 'empty_password', __( 'SSH2 password is required' ) );
		}
	}

/**
	 * Connects filesystem.
	 *
	 * @since 2.7.0
	 *
	 * @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 ( ! isset( $this->options['hostkey'] ) ) {
			$this->link = @ssh2_connect( $this->options['hostname'], $this->options['port'] );
		} else {
			$this->link = @ssh2_connect( $this->options['hostname'], $this->options['port'], $this->options['hostkey'] );
		}

if ( ! $this->link ) {
			$this->errors->add(
				'connect',
				sprintf(
					/* translators: %s: hostname:port */
					__( 'Failed to connect to SSH2 Server %s' ),
					$this->options['hostname'] . ':' . $this->options['port']
				)
			);

return false;
		}

if ( ! $this->keys ) {
			if ( ! @ssh2_auth_password( $this->link, $this->options['username'], $this->options['password'] ?? '' ) ) {
				$this->errors->add(
					'auth',
					sprintf(
						/* translators: %s: Username. */
						__( 'Username/Password incorrect for %s' ),
						$this->options['username']
					)
				);

return false;
			}
		} else {
			if ( ! @ssh2_auth_pubkey_file( $this->link, $this->options['username'], $this->options['public_key'] ?? '', $this->options['private_key'] ?? '', $this->options['password'] ?? '' ) ) {
				$this->errors->add(
					'auth',
					sprintf(
						/* translators: %s: Username. */
						__( 'Public and Private keys incorrect for %s' ),
						$this->options['username']
					)
				);

return false;
			}
		}

$this->sftp_link = ssh2_sftp( $this->link );

if ( ! $this->sftp_link ) {
			$this->errors->add(
				'connect',
				sprintf(
					/* translators: %s: hostname:port */
					__( 'Failed to initialize a SFTP subsystem session with the SSH2 Server %s' ),
					$this->options['hostname'] . ':' . $this->options['port']
				)
			);

return false;
		}

return true;
	}

/**
	 * Gets the ssh2.sftp PHP stream wrapper path to open for the given file.
	 *
	 * This method also works around a PHP bug where the root directory (/) cannot
	 * be opened by PHP functions, causing a false failure. In order to work around
	 * this, the path is converted to /./ which is semantically the same as /
	 * See https://bugs.php.net/bug.php?id=64169 for more details.
	 *
	 * @since 4.4.0
	 *
	 * @param string $path The File/Directory path on the remote server to return
	 * @return string The ssh2.sftp:// wrapped path to use.
	 */
	public function sftp_path( $path ) {
		if ( '/' === $path ) {
			$path = '/./';
		}

return 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $path, '/' );
	}

/**
	 * @since 2.7.0
	 *
	 * @param string $command
	 * @param bool   $returnbool
	 * @return bool|string True on success, false on failure. String if the command was executed, `$returnbool`
	 *                     is false (default), and data from the resulting stream was retrieved.
	 *
	 * @phpstan-return ( $returnbool is true ? bool : string )
	 */
	public function run_command( $command, $returnbool = false ) {
		if ( ! $this->link ) {
			return false;
		}

$stream = ssh2_exec( $this->link, $command );

if ( ! $stream ) {
			$this->errors->add(
				'command',
				sprintf(
					/* translators: %s: Command. */
					__( 'Unable to perform command: %s' ),
					$command
				)
			);
		} else {
			stream_set_blocking( $stream, true );
			stream_set_timeout( $stream, FS_TIMEOUT );
			$data = stream_get_contents( $stream );
			fclose( $stream );

if ( $returnbool ) {
				return ( false === $data ) ? false : '' !== trim( $data );
			} else {
				return $data;
			}
		}

return false;
	}

/**
	 * Reads entire file into a string.
	 *
	 * @since 2.7.0
	 *
	 * @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 ) {
		return file_get_contents( $this->sftp_path( $file ) );
	}

/**
	 * Reads entire file into an array.
	 *
	 * @since 2.7.0
	 *
	 * @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 ) {
		return file( $this->sftp_path( $file ) );
	}

/**
	 * Writes a string to a file.
	 *
	 * @since 2.7.0
	 *
	 * @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 ) {
		$ret = file_put_contents( $this->sftp_path( $file ), $contents );

if ( strlen( $contents ) !== $ret ) {
			return false;
		}

$this->chmod( $file, $mode );

return true;
	}

/**
	 * Gets the current working directory.
	 *
	 * @since 2.7.0
	 *
	 * @return string|false The current working directory on success, false on failure.
	 */
	public function cwd() {
		if ( ! $this->sftp_link ) {
			return false;
		}

$cwd = ssh2_sftp_realpath( $this->sftp_link, '.' );

if ( ! is_string( $cwd ) ) {
			return false;
		}

return trailingslashit( trim( $cwd ) );
	}

/**
	 * Changes current directory.
	 *
	 * @since 2.7.0
	 *
	 * @param string $dir The new current directory.
	 * @return bool True on success, false on failure.
	 */
	public function chdir( $dir ) {
		return $this->run_command( 'cd ' . $dir, true );
	}

/**
	 * Changes the file group.
	 *
	 * @since 2.7.0
	 *
	 * @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 ) {
		if ( ! $this->exists( $file ) ) {
			return false;
		}

if ( ! $recursive || ! $this->is_dir( $file ) ) {
			return $this->run_command( sprintf( 'chgrp %s %s', escapeshellarg( (string) $group ), escapeshellarg( $file ) ), true );
		}

return $this->run_command( sprintf( 'chgrp -R %s %s', escapeshellarg( (string) $group ), escapeshellarg( $file ) ), true );
	}

/**
	 * Changes filesystem permissions.
	 *
	 * @since 2.7.0
	 *
	 * @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 ( ! $this->exists( $file ) ) {
			return false;
		}

if ( ! $mode ) {
			if ( $this->is_file( $file ) ) {
				$mode = FS_CHMOD_FILE;
			} elseif ( $this->is_dir( $file ) ) {
				$mode = FS_CHMOD_DIR;
			} else {
				return false;
			}
		}

if ( ! $recursive || ! $this->is_dir( $file ) ) {
			return $this->run_command( sprintf( 'chmod %o %s', $mode, escapeshellarg( $file ) ), true );
		}

return $this->run_command( sprintf( 'chmod -R %o %s', $mode, escapeshellarg( $file ) ), true );
	}

/**
	 * Changes the owner of a file or directory.
	 *
	 * @since 2.7.0
	 *
	 * @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 ) {
		if ( ! $this->exists( $file ) ) {
			return false;
		}

if ( ! $recursive || ! $this->is_dir( $file ) ) {
			return $this->run_command( sprintf( 'chown %s %s', escapeshellarg( (string) $owner ), escapeshellarg( $file ) ), true );
		}

return $this->run_command( sprintf( 'chown -R %s %s', escapeshellarg( (string) $owner ), escapeshellarg( $file ) ), true );
	}

/**
	 * Gets the file owner.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to the file.
	 * @return string|int<1, max>|false Username of the owner on success, or UID of file owner if not available; false on failure.
	 */
	public function owner( $file ) {
		$owneruid = @fileowner( $this->sftp_path( $file ) );

if ( ! $owneruid ) {
			return false;
		}

if ( ! function_exists( 'posix_getpwuid' ) ) {
			return $owneruid;
		}

$ownerarray = posix_getpwuid( $owneruid );

if ( ! $ownerarray ) {
			return false;
		}

return $ownerarray['name'];
	}

/**
	 * Gets the permissions of the specified file or filepath in their octal format.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to the file.
	 * @return string Mode of the file (the last 3 digits). Empty string on failure.
	 */
	public function getchmod( $file ) {
		$file_perms = @fileperms( $this->sftp_path( $file ) );
		if ( ! is_int( $file_perms ) ) {
			return '';
		}
		return substr( decoct( $file_perms ), -3 );
	}

/**
	 * Gets the file's group.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to the file.
	 * @return string|int<1, max>|false Group name on success, or GID of the file's group if not available; false on failure.
	 */
	public function group( $file ) {
		$gid = @filegroup( $this->sftp_path( $file ) );

if ( ! $gid ) {
			return false;
		}

if ( ! function_exists( 'posix_getgrgid' ) ) {
			return $gid;
		}

$grouparray = posix_getgrgid( $gid );

if ( ! $grouparray ) {
			return false;
		}

return $grouparray['name'];
	}

/**
	 * Copies a file.
	 *
	 * @since 2.7.0
	 *
	 * @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 2.7.0
	 *
	 * @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 ) {
		if ( $this->exists( $destination ) ) {
			if ( $overwrite ) {
				// We need to remove the destination before we can rename the source.
				$this->delete( $destination, false, 'f' );
			} else {
				// If we're not overwriting, the rename will fail, so return early.
				return false;
			}
		}

if ( ! $this->sftp_link ) {
			return false;
		}
		return ssh2_sftp_rename( $this->sftp_link, $source, $destination );
	}

/**
	 * Deletes a file or directory.
	 *
	 * @since 2.7.0
	 *
	 * @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 ( ! $this->sftp_link ) {
			return false;
		}
		if ( 'f' === $type || $this->is_file( $file ) ) {
			return ssh2_sftp_unlink( $this->sftp_link, $file );
		}

if ( ! $recursive ) {
			return ssh2_sftp_rmdir( $this->sftp_link, $file );
		}

$filelist = $this->dirlist( $file );

if ( is_array( $filelist ) ) {
			foreach ( $filelist as $filename => $fileinfo ) {
				$this->delete( $file . '/' . $filename, $recursive, $fileinfo['type'] );
			}
		}

return ssh2_sftp_rmdir( $this->sftp_link, $file );
	}

/**
	 * Checks if a file or directory exists.
	 *
	 * @since 2.7.0
	 *
	 * @param string $path Path to file or directory.
	 * @return bool Whether $path exists or not.
	 */
	public function exists( $path ) {
		return file_exists( $this->sftp_path( $path ) );
	}

/**
	 * Checks if resource is a file.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file File path.
	 * @return bool Whether $file is a file.
	 */
	public function is_file( $file ) {
		return is_file( $this->sftp_path( $file ) );
	}

/**
	 * Checks if resource is a directory.
	 *
	 * @since 2.7.0
	 *
	 * @param string $path Directory path.
	 * @return bool Whether $path is a directory.
	 */
	public function is_dir( $path ) {
		return is_dir( $this->sftp_path( $path ) );
	}

/**
	 * Checks if a file is readable.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to file.
	 * @return bool Whether $file is readable.
	 */
	public function is_readable( $file ) {
		return is_readable( $this->sftp_path( $file ) );
	}

/**
	 * Checks if a file or directory is writable.
	 *
	 * @since 2.7.0
	 *
	 * @param string $path Path to file or directory.
	 * @return bool Whether $path is writable.
	 */
	public function is_writable( $path ) {
		// PHP will base its writable checks on system_user === file_owner, not ssh_user === file_owner.
		return true;
	}

/**
	 * Gets the file's last access time.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to file.
	 * @return int|false Unix timestamp representing last access time, false on failure.
	 */
	public function atime( $file ) {
		return fileatime( $this->sftp_path( $file ) );
	}

/**
	 * Gets the file modification time.
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to file.
	 * @return int|false Unix timestamp representing modification time, false on failure.
	 */
	public function mtime( $file ) {
		return filemtime( $this->sftp_path( $file ) );
	}

/**
	 * Gets the file size (in bytes).
	 *
	 * @since 2.7.0
	 *
	 * @param string $file Path to file.
	 * @return int|false Size of the file in bytes on success, false on failure.
	 */
	public function size( $file ) {
		return filesize( $this->sftp_path( $file ) );
	}

/**
	 * Sets the access and modification times of a file.
	 *
	 * Note: Not implemented.
	 *
	 * @since 2.7.0
	 *
	 * @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 false Always returns false because not implemented.
	 */
	public function touch( $file, $time = 0, $atime = 0 ) {
		// Not implemented.
		return false;
	}

/**
	 * Creates a directory.
	 *
	 * @since 2.7.0
	 *
	 * @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 ) {
		if ( ! $this->sftp_link ) {
			return false;
		}
		$path = untrailingslashit( $path );

if ( empty( $path ) ) {
			return false;
		}

if ( ! $chmod ) {
			$chmod = FS_CHMOD_DIR;
		}

if ( ! ssh2_sftp_mkdir( $this->sftp_link, $path, $chmod, true ) ) {
			return false;
		}

// Set directory permissions.
		ssh2_sftp_chmod( $this->sftp_link, $path, $chmod );

if ( $chown ) {
			$this->chown( $path, $chown );
		}

if ( $chgrp ) {
			$this->chgrp( $path, $chgrp );
		}

return true;
	}

/**
	 * Deletes a directory.
	 *
	 * @since 2.7.0
	 *
	 * @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 2.7.0
	 *
	 * @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 false            $number      File number. Always false in this context.
	 *         @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.
	 *     }
	 * }
	 * @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;
		}

if ( ! $this->is_dir( $path ) || ! $this->is_readable( $path ) ) {
			return false;
		}

$ret = array();
		$dir = dir( $this->sftp_path( $path ) );

if ( ! $dir ) {
			return false;
		}

$path = trailingslashit( $path );

while ( false !== ( $entry = $dir->read() ) ) {
			$struc         = array();
			$struc['name'] = $entry;

if ( '.' === $struc['name'] || '..' === $struc['name'] ) {
				continue; // Do not care about these folders.
			}

if ( ! $include_hidden && '.' === $struc['name'][0] ) {
				continue;
			}

if ( $limit_file && $struc['name'] !== $limit_file ) {
				continue;
			}

$struc['perms']       = $this->gethchmod( $path . $entry );
			$struc['permsn']      = $this->getnumchmodfromh( $struc['perms'] );
			$struc['number']      = false;
			$struc['owner']       = $this->owner( $path . $entry );
			$struc['group']       = $this->group( $path . $entry );
			$struc['size']        = $this->size( $path . $entry );
			$struc['lastmodunix'] = $this->mtime( $path . $entry );
			$struc['lastmod']     = is_int( $struc['lastmodunix'] ) ? gmdate( 'M j', $struc['lastmodunix'] ) : false;
			$struc['time']        = is_int( $struc['lastmodunix'] ) ? gmdate( 'h:i:s', $struc['lastmodunix'] ) : false;
			$struc['type']        = $this->is_dir( $path . $entry ) ? 'd' : 'f';

if ( 'd' === $struc['type'] ) {
				if ( $recursive ) {
					$struc['files'] = $this->dirlist( $path . $struc['name'], $include_hidden, $recursive );
				} else {
					$struc['files'] = array();
				}
			}

$ret[ $struc['name'] ] = $struc;
		}

$dir->close();
		unset( $dir );

return $ret;
	}
}

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