600 lines
15 KiB
PHP
600 lines
15 KiB
PHP
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<?php
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/**
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* WordPress Filesystem Class for implementing SSH2
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*
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* To use this class you must follow these steps for PHP 5.2.6+
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*
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* @contrib http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes
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*
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* 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)
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*
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* cd /usr/src
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* wget http://surfnet.dl.sourceforge.net/sourceforge/libssh2/libssh2-0.14.tar.gz
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* tar -zxvf libssh2-0.14.tar.gz
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* cd libssh2-0.14/
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* ./configure
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* make all install
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*
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* Note: Do not leave the directory yet!
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*
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* Enter: pecl install -f ssh2
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*
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* Copy the ssh.so file it creates to your PHP Module Directory.
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* Open up your PHP.INI file and look for where extensions are placed.
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* Add in your PHP.ini file: extension=ssh2.so
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*
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* Restart Apache!
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* Check phpinfo() streams to confirm that: ssh2.shell, ssh2.exec, ssh2.tunnel, ssh2.scp, ssh2.sftp exist.
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*
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* Note: as of WordPress 2.8, This utilises the PHP5+ function 'stream_get_contents'
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*
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* @since 2.7.0
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*
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* @package WordPress
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* @subpackage Filesystem
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*/
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class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
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/**
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*/
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public $link = false;
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/**
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* @var resource
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*/
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public $sftp_link;
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public $keys = false;
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/**
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*
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* @param array $opt
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*/
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public function __construct( $opt = '' ) {
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$this->method = 'ssh2';
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$this->errors = new WP_Error();
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//Check if possible to use ssh2 functions.
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if ( ! extension_loaded('ssh2') ) {
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$this->errors->add('no_ssh2_ext', __('The ssh2 PHP extension is not available'));
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return;
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}
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if ( !function_exists('stream_get_contents') ) {
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$this->errors->add(
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'ssh2_php_requirement',
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sprintf(
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/* translators: %s: stream_get_contents() */
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__( 'The ssh2 PHP extension is available, however, we require the PHP5 function %s' ),
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'<code>stream_get_contents()</code>'
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)
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);
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return;
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}
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// Set defaults:
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if ( empty($opt['port']) )
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$this->options['port'] = 22;
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else
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$this->options['port'] = $opt['port'];
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if ( empty($opt['hostname']) )
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$this->errors->add('empty_hostname', __('SSH2 hostname is required'));
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else
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$this->options['hostname'] = $opt['hostname'];
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// Check if the options provided are OK.
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if ( !empty ($opt['public_key']) && !empty ($opt['private_key']) ) {
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$this->options['public_key'] = $opt['public_key'];
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$this->options['private_key'] = $opt['private_key'];
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$this->options['hostkey'] = array('hostkey' => 'ssh-rsa');
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$this->keys = true;
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} elseif ( empty ($opt['username']) ) {
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$this->errors->add('empty_username', __('SSH2 username is required'));
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}
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if ( !empty($opt['username']) )
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$this->options['username'] = $opt['username'];
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if ( empty ($opt['password']) ) {
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// Password can be blank if we are using keys.
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if ( !$this->keys )
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$this->errors->add('empty_password', __('SSH2 password is required'));
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} else {
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$this->options['password'] = $opt['password'];
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}
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}
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/**
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*
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* @return bool
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*/
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public function connect() {
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if ( ! $this->keys ) {
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$this->link = @ssh2_connect($this->options['hostname'], $this->options['port']);
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} else {
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$this->link = @ssh2_connect($this->options['hostname'], $this->options['port'], $this->options['hostkey']);
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}
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if ( ! $this->link ) {
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$this->errors->add( 'connect',
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/* translators: %s: hostname:port */
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sprintf( __( 'Failed to connect to SSH2 Server %s' ),
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$this->options['hostname'] . ':' . $this->options['port']
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)
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);
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return false;
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}
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if ( !$this->keys ) {
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if ( ! @ssh2_auth_password($this->link, $this->options['username'], $this->options['password']) ) {
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$this->errors->add( 'auth',
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/* translators: %s: username */
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sprintf( __( 'Username/Password incorrect for %s' ),
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$this->options['username']
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)
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);
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return false;
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}
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} else {
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if ( ! @ssh2_auth_pubkey_file($this->link, $this->options['username'], $this->options['public_key'], $this->options['private_key'], $this->options['password'] ) ) {
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$this->errors->add( 'auth',
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/* translators: %s: username */
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sprintf( __( 'Public and Private keys incorrect for %s' ),
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$this->options['username']
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)
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);
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return false;
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}
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}
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$this->sftp_link = ssh2_sftp( $this->link );
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if ( ! $this->sftp_link ) {
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$this->errors->add( 'connect',
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/* translators: %s: hostname:port */
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sprintf( __( 'Failed to initialize a SFTP subsystem session with the SSH2 Server %s' ),
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$this->options['hostname'] . ':' . $this->options['port']
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)
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);
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return false;
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}
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return true;
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}
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/**
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* Gets the ssh2.sftp PHP stream wrapper path to open for the given file.
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*
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* This method also works around a PHP bug where the root directory (/) cannot
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* be opened by PHP functions, causing a false failure. In order to work around
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* this, the path is converted to /./ which is semantically the same as /
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* See https://bugs.php.net/bug.php?id=64169 for more details.
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*
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*
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* @since 4.4.0
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*
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* @param string $path The File/Directory path on the remote server to return
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* @return string The ssh2.sftp:// wrapped path to use.
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*/
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public function sftp_path( $path ) {
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if ( '/' === $path ) {
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$path = '/./';
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}
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return 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $path, '/' );
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}
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/**
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*
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* @param string $command
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* @param bool $returnbool
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* @return bool|string True on success, false on failure. String if the command was executed, `$returnbool`
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* is false (default), and data from the resulting stream was retrieved.
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*/
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public function run_command( $command, $returnbool = false ) {
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if ( ! $this->link )
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return false;
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if ( ! ($stream = ssh2_exec($this->link, $command)) ) {
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$this->errors->add( 'command',
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/* translators: %s: command */
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sprintf( __( 'Unable to perform command: %s'),
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$command
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)
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);
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} else {
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stream_set_blocking( $stream, true );
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stream_set_timeout( $stream, FS_TIMEOUT );
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$data = stream_get_contents( $stream );
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fclose( $stream );
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if ( $returnbool )
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return ( $data === false ) ? false : '' != trim($data);
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else
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return $data;
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}
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return false;
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}
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/**
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*
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* @param string $file
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* @return string|false
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*/
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public function get_contents( $file ) {
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return file_get_contents( $this->sftp_path( $file ) );
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}
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/**
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*
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* @param string $file
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* @return array
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*/
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public function get_contents_array($file) {
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return file( $this->sftp_path( $file ) );
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}
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/**
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*
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* @param string $file
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* @param string $contents
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* @param bool|int $mode
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* @return bool
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*/
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public function put_contents($file, $contents, $mode = false ) {
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$ret = file_put_contents( $this->sftp_path( $file ), $contents );
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if ( $ret !== strlen( $contents ) )
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return false;
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$this->chmod($file, $mode);
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return true;
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}
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/**
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*
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* @return bool
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*/
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public function cwd() {
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$cwd = ssh2_sftp_realpath( $this->sftp_link, '.' );
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if ( $cwd ) {
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$cwd = trailingslashit( trim( $cwd ) );
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}
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return $cwd;
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}
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/**
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*
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* @param string $dir
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* @return bool|string
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*/
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public function chdir($dir) {
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return $this->run_command('cd ' . $dir, true);
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}
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/**
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*
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* @param string $file
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* @param string $group
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* @param bool $recursive
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*
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* @return bool
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*/
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public function chgrp($file, $group, $recursive = false ) {
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if ( ! $this->exists($file) )
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return false;
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if ( ! $recursive || ! $this->is_dir($file) )
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return $this->run_command(sprintf('chgrp %s %s', escapeshellarg($group), escapeshellarg($file)), true);
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return $this->run_command(sprintf('chgrp -R %s %s', escapeshellarg($group), escapeshellarg($file)), true);
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}
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/**
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*
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* @param string $file
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* @param int $mode
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* @param bool $recursive
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* @return bool|string
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*/
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public function chmod($file, $mode = false, $recursive = false) {
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if ( ! $this->exists($file) )
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return false;
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if ( ! $mode ) {
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if ( $this->is_file($file) )
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$mode = FS_CHMOD_FILE;
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elseif ( $this->is_dir($file) )
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$mode = FS_CHMOD_DIR;
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else
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return false;
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}
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if ( ! $recursive || ! $this->is_dir($file) )
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return $this->run_command(sprintf('chmod %o %s', $mode, escapeshellarg($file)), true);
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return $this->run_command(sprintf('chmod -R %o %s', $mode, escapeshellarg($file)), true);
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}
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/**
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* Change the ownership of a file / folder.
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*
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*
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* @param string $file Path to the file.
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* @param string|int $owner A user name or number.
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* @param bool $recursive Optional. If set True changes file owner recursivly. Default False.
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* @return bool True on success or false on failure.
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*/
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public function chown( $file, $owner, $recursive = false ) {
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if ( ! $this->exists($file) )
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return false;
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if ( ! $recursive || ! $this->is_dir($file) )
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return $this->run_command(sprintf('chown %s %s', escapeshellarg($owner), escapeshellarg($file)), true);
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return $this->run_command(sprintf('chown -R %s %s', escapeshellarg($owner), escapeshellarg($file)), true);
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}
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/**
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*
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* @param string $file
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* @return string|false
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*/
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public function owner($file) {
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$owneruid = @fileowner( $this->sftp_path( $file ) );
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if ( ! $owneruid )
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return false;
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if ( ! function_exists('posix_getpwuid') )
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return $owneruid;
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$ownerarray = posix_getpwuid($owneruid);
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return $ownerarray['name'];
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}
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/**
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*
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* @param string $file
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* @return string
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*/
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public function getchmod($file) {
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return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 );
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}
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/**
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*
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* @param string $file
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* @return string|false
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*/
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public function group($file) {
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$gid = @filegroup( $this->sftp_path( $file ) );
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if ( ! $gid )
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return false;
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if ( ! function_exists('posix_getgrgid') )
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return $gid;
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$grouparray = posix_getgrgid($gid);
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return $grouparray['name'];
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}
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/**
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*
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* @param string $source
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* @param string $destination
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* @param bool $overwrite
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* @param int|bool $mode
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* @return bool
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*/
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public function copy($source, $destination, $overwrite = false, $mode = false) {
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if ( ! $overwrite && $this->exists($destination) )
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return false;
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$content = $this->get_contents($source);
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||
|
|
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;
|
||
|
|
}
|
||
|
|
}
|