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Edit File : class-wp-filesystem-ssh2.php \| Size : 15.07 KB
<?php /** * WordPress Filesystem Class for implementing SSH2 * * To use this class you must follow these steps for PHP 5.2.6+ * * @contrib http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes * * Complie libssh2 (Note: Only 0.14 is officaly working with PHP 5.2.6+ right now, But many users have found the latest versions work) * * cd /usr/src * wget http://surfnet.dl.sourceforge.net/sourceforge/libssh2/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 utilises the PHP5+ function 'stream_get_contents' * * @since 2.7.0 * * @package WordPress * @subpackage Filesystem / class WP_Filesystem_SSH2 extends WP_Filesystem_Base { /* / public $link = false; /* * @var resource / public $sftp_link; public $keys = false; /* * @param array $opt / public function __construct( $opt = '' ) { $this->method = 'ssh2'; $this->errors = new WP_Error(); //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 ( ! function_exists( 'stream_get_contents' ) ) { $this->errors->add( 'ssh2_php_requirement', sprintf( / translators: %s: stream_get_contents() / __( 'The ssh2 PHP extension is available, however, we require the PHP5 function %s' ), '<code>stream_get_contents()</code>' ) ); return; } // Set defaults: if ( empty( $opt['port'] ) ) { $this->options['port'] = 22; } else { $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' ); $this->keys = true; } elseif ( empty( $opt['username'] ) ) { $this->errors->add( 'empty_username', __( 'SSH2 username is required' ) ); } if ( ! empty( $opt['username'] ) ) { $this->options['username'] = $opt['username']; } if ( empty( $opt['password'] ) ) { // Password can be blank if we are using keys. if ( ! $this->keys ) { $this->errors->add( 'empty_password', __( 'SSH2 password is required' ) ); } } else { $this->options['password'] = $opt['password']; } } /* * @return bool / public function connect() { if ( ! $this->keys ) { $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', / translators: %s: hostname:port / sprintf( __( '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', / translators: %s: username / sprintf( __( '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', / translators: %s: username / sprintf( __( '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', / translators: %s: hostname:port / sprintf( __( '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, '/' ); } /* * @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. / public function run_command( $command, $returnbool = false ) { if ( ! $this->link ) { return false; } if ( ! ( $stream = ssh2_exec( $this->link, $command ) ) ) { $this->errors->add( 'command', / translators: %s: command / sprintf( __( '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 ( $data === false ) ? false : '' != trim( $data ); } else { return $data; } } return false; } /* * @param string $file * @return string\|false / public function get_contents( $file ) { return file_get_contents( $this->sftp_path( $file ) ); } /* * @param string $file * @return array / public function get_contents_array( $file ) { return file( $this->sftp_path( $file ) ); } /* * @param string $file * @param string $contents * @param bool\|int $mode * @return bool / public function put_contents( $file, $contents, $mode = false ) { $ret = file_put_contents( $this->sftp_path( $file ), $contents ); if ( $ret !== strlen( $contents ) ) { return false; } $this->chmod( $file, $mode ); return true; } /* * @return bool / public function cwd() { $cwd = ssh2_sftp_realpath( $this->sftp_link, '.' ); if ( $cwd ) { $cwd = trailingslashit( trim( $cwd ) ); } return $cwd; } /* * @param string $dir * @return bool\|string / public function chdir( $dir ) { return $this->run_command( 'cd ' . $dir, true ); } /* * @param string $file * @param string $group * @param bool $recursive * * @return bool / 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( $group ), escapeshellarg( $file ) ), true ); } return $this->run_command( sprintf( 'chgrp -R %s %s', escapeshellarg( $group ), escapeshellarg( $file ) ), true ); } /* * @param string $file * @param int $mode * @param bool $recursive * @return bool\|string / 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 ); } /* * Change the ownership of a file / folder. * * @param string $file Path to the file. * @param string\|int $owner A user name or number. * @param bool $recursive Optional. If set True changes file owner recursivly. Default False. * @return bool True on success or 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( $owner ), escapeshellarg( $file ) ), true ); } return $this->run_command( sprintf( 'chown -R %s %s', escapeshellarg( $owner ), escapeshellarg( $file ) ), true ); } /* * @param string $file * @return string\|false / 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 ); return $ownerarray['name']; } /* * @param string $file * @return string / public function getchmod( $file ) { return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 ); } /* * @param string $file * @return string\|false / 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 ); return $grouparray['name']; } /* * @param string $source * @param string $destination * @param bool $overwrite * @param int\|bool $mode * @return bool / 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 ); } /* * @param string $source * @param string $destination * @param bool $overwrite * @return bool / public function move( $source, $destination, $overwrite = false ) { return @ssh2_sftp_rename( $this->sftp_link, $source, $destination ); } /* * @param string $file * @param bool $recursive * @param string\|bool $type * @return bool / public function delete( $file, $recursive = false, $type = 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 ); } /* * @param string $file * @return bool / public function exists( $file ) { return file_exists( $this->sftp_path( $file ) ); } /* * @param string $file * @return bool / public function is_file( $file ) { return is_file( $this->sftp_path( $file ) ); } /* * @param string $path * @return bool / public function is_dir( $path ) { return is_dir( $this->sftp_path( $path ) ); } /* * @param string $file * @return bool / public function is_readable( $file ) { return is_readable( $this->sftp_path( $file ) ); } /* * @param string $file * @return bool / public function is_writable( $file ) { // PHP will base it's writable checks on system_user === file_owner, not ssh_user === file_owner return true; } /* * @param string $file * @return int / public function atime( $file ) { return fileatime( $this->sftp_path( $file ) ); } /* * @param string $file * @return int / public function mtime( $file ) { return filemtime( $this->sftp_path( $file ) ); } /* * @param string $file * @return int / public function size( $file ) { return filesize( $this->sftp_path( $file ) ); } /* * @param string $file * @param int $time * @param int $atime / public function touch( $file, $time = 0, $atime = 0 ) { //Not implemented. } /* * @param string $path * @param mixed $chmod * @param mixed $chown * @param mixed $chgrp * @return bool / public function mkdir( $path, $chmod = false, $chown = false, $chgrp = 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; } if ( $chown ) { $this->chown( $path, $chown ); } if ( $chgrp ) { $this->chgrp( $path, $chgrp ); } return true; } /* * @param string $path * @param bool $recursive * @return bool / public function rmdir( $path, $recursive = false ) { return $this->delete( $path, $recursive ); } /* * @param string $path * @param bool $include_hidden * @param bool $recursive * @return bool\|array */ 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 ) ) { return false; } $ret = array(); $dir = @dir( $this->sftp_path( $path ) ); if ( ! $dir ) { return false; } 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'] = date( 'M j', $struc['lastmodunix'] ); $struc['time'] = date( 'h:i:s', $struc['lastmodunix'] ); $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; } } Back

Edit File : class-wp-filesystem-ssh2.php | Size : 15.07 KB

<?php
/**
 * WordPress Filesystem Class for implementing SSH2
 *
 * To use this class you must follow these steps for PHP 5.2.6+
 *
 * @contrib http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes
 *
 * Complie libssh2 (Note: Only 0.14 is officaly working with PHP 5.2.6+ right now, But many users have found the latest versions work)
 *
 * cd /usr/src
 * wget http://surfnet.dl.sourceforge.net/sourceforge/libssh2/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 utilises the PHP5+ function 'stream_get_contents'
 *
 * @since 2.7.0
 *
 * @package WordPress
 * @subpackage Filesystem
 */
class WP_Filesystem_SSH2 extends WP_Filesystem_Base {

/**
	 */
	public $link = false;

/**
	 * @var resource
	 */
	public $sftp_link;
	public $keys = false;

/**
	 * @param array $opt
	 */
	public function __construct( $opt = '' ) {
		$this->method = 'ssh2';
		$this->errors = new WP_Error();

//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 ( ! function_exists( 'stream_get_contents' ) ) {
			$this->errors->add(
				'ssh2_php_requirement',
				sprintf(
					/* translators: %s: stream_get_contents() */
					__( 'The ssh2 PHP extension is available, however, we require the PHP5 function %s' ),
					'<code>stream_get_contents()</code>'
				)
			);
			return;
		}

// Set defaults:
		if ( empty( $opt['port'] ) ) {
			$this->options['port'] = 22;
		} else {
			$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' );

$this->keys = true;
		} elseif ( empty( $opt['username'] ) ) {
			$this->errors->add( 'empty_username', __( 'SSH2 username is required' ) );
		}

if ( ! empty( $opt['username'] ) ) {
			$this->options['username'] = $opt['username'];
		}

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

/**
	 * @return bool
	 */
	public function connect() {
		if ( ! $this->keys ) {
			$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',
				/* translators: %s: hostname:port */
				sprintf(
					__( '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',
					/* translators: %s: username */
					sprintf(
						__( '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',
					/* translators: %s: username */
					sprintf(
						__( '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',
				/* translators: %s: hostname:port */
				sprintf(
					__( '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, '/' );
	}

/**
	 * @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.
	 */
	public function run_command( $command, $returnbool = false ) {
		if ( ! $this->link ) {
			return false;
		}

if ( ! ( $stream = ssh2_exec( $this->link, $command ) ) ) {
			$this->errors->add(
				'command',
				/* translators: %s: command */
				sprintf(
					__( '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 ( $data === false ) ? false : '' != trim( $data );
			} else {
				return $data;
			}
		}
		return false;
	}

/**
	 * @param string $file
	 * @return string|false
	 */
	public function get_contents( $file ) {
		return file_get_contents( $this->sftp_path( $file ) );
	}

/**
	 * @param string $file
	 * @return array
	 */
	public function get_contents_array( $file ) {
		return file( $this->sftp_path( $file ) );
	}

/**
	 * @param string   $file
	 * @param string   $contents
	 * @param bool|int $mode
	 * @return bool
	 */
	public function put_contents( $file, $contents, $mode = false ) {
		$ret = file_put_contents( $this->sftp_path( $file ), $contents );

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

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

return true;
	}

/**
	 * @return bool
	 */
	public function cwd() {
		$cwd = ssh2_sftp_realpath( $this->sftp_link, '.' );
		if ( $cwd ) {
			$cwd = trailingslashit( trim( $cwd ) );
		}
		return $cwd;
	}

/**
	 * @param string $dir
	 * @return bool|string
	 */
	public function chdir( $dir ) {
		return $this->run_command( 'cd ' . $dir, true );
	}

/**
	 * @param string $file
	 * @param string $group
	 * @param bool   $recursive
	 *
	 * @return bool
	 */
	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( $group ), escapeshellarg( $file ) ), true );
		}
		return $this->run_command( sprintf( 'chgrp -R %s %s', escapeshellarg( $group ), escapeshellarg( $file ) ), true );
	}

/**
	 * @param string $file
	 * @param int    $mode
	 * @param bool   $recursive
	 * @return bool|string
	 */
	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 );
	}

/**
	 * Change the ownership of a file / folder.
	 *
	 * @param string     $file      Path to the file.
	 * @param string|int $owner     A user name or number.
	 * @param bool       $recursive Optional. If set True changes file owner recursivly. Default False.
	 * @return bool True on success or 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( $owner ), escapeshellarg( $file ) ), true );
		}
		return $this->run_command( sprintf( 'chown -R %s %s', escapeshellarg( $owner ), escapeshellarg( $file ) ), true );
	}

/**
	 * @param string $file
	 * @return string|false
	 */
	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 );
		return $ownerarray['name'];
	}

/**
	 * @param string $file
	 * @return string
	 */
	public function getchmod( $file ) {
		return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 );
	}

/**
	 * @param string $file
	 * @return string|false
	 */
	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 );
		return $grouparray['name'];
	}

/**
	 * @param string   $source
	 * @param string   $destination
	 * @param bool     $overwrite
	 * @param int|bool $mode
	 * @return bool
	 */
	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 );
	}

/**
	 * @param string $source
	 * @param string $destination
	 * @param bool   $overwrite
	 * @return bool
	 */
	public function move( $source, $destination, $overwrite = false ) {
		return @ssh2_sftp_rename( $this->sftp_link, $source, $destination );
	}

/**
	 * @param string      $file
	 * @param bool        $recursive
	 * @param string|bool $type
	 * @return bool
	 */
	public function delete( $file, $recursive = false, $type = 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 );
	}

/**
	 * @param string $file
	 * @return bool
	 */
	public function exists( $file ) {
		return file_exists( $this->sftp_path( $file ) );
	}

/**
	 * @param string $file
	 * @return bool
	 */
	public function is_file( $file ) {
		return is_file( $this->sftp_path( $file ) );
	}

/**
	 * @param string $path
	 * @return bool
	 */
	public function is_dir( $path ) {
		return is_dir( $this->sftp_path( $path ) );
	}

/**
	 * @param string $file
	 * @return bool
	 */
	public function is_readable( $file ) {
		return is_readable( $this->sftp_path( $file ) );
	}

/**
	 * @param string $file
	 * @return bool
	 */
	public function is_writable( $file ) {
		// PHP will base it's writable checks on system_user === file_owner, not ssh_user === file_owner
		return true;
	}

/**
	 * @param string $file
	 * @return int
	 */
	public function atime( $file ) {
		return fileatime( $this->sftp_path( $file ) );
	}

/**
	 * @param string $file
	 * @return int
	 */
	public function mtime( $file ) {
		return filemtime( $this->sftp_path( $file ) );
	}

/**
	 * @param string $file
	 * @return int
	 */
	public function size( $file ) {
		return filesize( $this->sftp_path( $file ) );
	}

/**
	 * @param string $file
	 * @param int    $time
	 * @param int    $atime
	 */
	public function touch( $file, $time = 0, $atime = 0 ) {
		//Not implemented.
	}

/**
	 * @param string $path
	 * @param mixed  $chmod
	 * @param mixed  $chown
	 * @param mixed  $chgrp
	 * @return bool
	 */
	public function mkdir( $path, $chmod = false, $chown = false, $chgrp = 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;
		}
		if ( $chown ) {
			$this->chown( $path, $chown );
		}
		if ( $chgrp ) {
			$this->chgrp( $path, $chgrp );
		}
		return true;
	}

/**
	 * @param string $path
	 * @param bool   $recursive
	 * @return bool
	 */
	public function rmdir( $path, $recursive = false ) {
		return $this->delete( $path, $recursive );
	}

/**
	 * @param string $path
	 * @param bool   $include_hidden
	 * @param bool   $recursive
	 * @return bool|array
	 */
	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 ) ) {
			return false;
		}

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

if ( ! $dir ) {
			return false;
		}

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']     = date( 'M j', $struc['lastmodunix'] );
			$struc['time']        = date( 'h:i:s', $struc['lastmodunix'] );
			$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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