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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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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 $keys = false; |
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public function __construct($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('ssh2_php_requirement', __('The ssh2 PHP extension is available, however, we require the PHP5 function <code>stream_get_contents()</code>')); |
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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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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', sprintf(__('Failed to connect to SSH2 Server %1$s:%2$s'), $this->options['hostname'], $this->options['port'])); |
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return false; |
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} |
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if ( !$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', sprintf(__('Username/Password incorrect for %s'), $this->options['username'])); |
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return false; |
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} |
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} else { |
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if ( ! @ssh2_auth_pubkey_file($this->link, $this->options['username'], $this->options['public_key'], $this->options['private_key'], $this->options['password'] ) ) { |
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$this->errors->add('auth', sprintf(__('Public and Private keys incorrect for %s'), $this->options['username'])); |
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return false; |
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} |
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} |
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$this->sftp_link = ssh2_sftp($this->link); |
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return true; |
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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 |
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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', sprintf(__('Unable to perform command: %s'), $command)); |
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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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* @param string $file |
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* @return string|false |
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*/ |
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public function get_contents( $file ) { |
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$file = ltrim($file, '/'); |
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return file_get_contents('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
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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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$file = ltrim($file, '/'); |
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return file('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
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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( 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $file, '/' ), $contents ); |
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if ( $ret !== strlen( $contents ) ) |
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return false; |
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$this->chmod($file, $mode); |
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return true; |
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} |
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public function cwd() { |
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$cwd = $this->run_command('pwd'); |
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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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* @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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* @param string $file |
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* @param string $group |
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* @param bool $recursive |
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*/ |
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public function chgrp($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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* @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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* @since Unknown |
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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. Defaults to False. |
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* @return bool|string Returns 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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* @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('ssh2.sftp://' . $this->sftp_link . '/' . ltrim($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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* @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( 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $file, '/' ) ) ), -3 ); |
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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('ssh2.sftp://' . $this->sftp_link . '/' . ltrim($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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* @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) |
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return false; |
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return $this->put_contents($destination, $content, $mode); |
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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 $overwrite |
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* @return bool |
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*/ |
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public function move($source, $destination, $overwrite = false) { |
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return @ssh2_sftp_rename( $this->sftp_link, $source, $destination ); |
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} |
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/** |
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* @param string $file |
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* @param bool $recursive |
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* @param string|bool $type |
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* @return bool |
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*/ |
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public function delete($file, $recursive = false, $type = false) { |
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if ( 'f' == $type || $this->is_file($file) ) |
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return ssh2_sftp_unlink($this->sftp_link, $file); |
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if ( ! $recursive ) |
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return ssh2_sftp_rmdir($this->sftp_link, $file); |
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$filelist = $this->dirlist($file); |
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if ( is_array($filelist) ) { |
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foreach ( $filelist as $filename => $fileinfo) { |
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$this->delete($file . '/' . $filename, $recursive, $fileinfo['type']); |
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} |
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} |
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return ssh2_sftp_rmdir($this->sftp_link, $file); |
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} |
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/** |
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* @param string $file |
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* @return bool |
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*/ |
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public function exists($file) { |
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$file = ltrim($file, '/'); |
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return file_exists('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
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} |
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/** |
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* @param string $file |
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* @return bool |
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*/ |
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public function is_file($file) { |
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$file = ltrim($file, '/'); |
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return is_file('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
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} |
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5
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/** |
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* @param string $path |
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* @return bool |
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*/ |
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public function is_dir($path) { |
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0
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$path = ltrim($path, '/'); |
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return is_dir('ssh2.sftp://' . $this->sftp_link . '/' . $path); |
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} |
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5
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361 |
/** |
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* @param string $file |
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* @return bool |
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*/ |
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365 |
public function is_readable($file) { |
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0
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366 |
$file = ltrim($file, '/'); |
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367 |
return is_readable('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
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} |
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5
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369 |
/** |
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370 |
* @param string $file |
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371 |
* @return bool |
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372 |
*/ |
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373 |
public function is_writable($file) { |
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0
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374 |
$file = ltrim($file, '/'); |
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375 |
return is_writable('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
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} |
|
5
|
377 |
/** |
|
|
378 |
* @param string $file |
|
|
379 |
* @return int |
|
|
380 |
*/ |
|
|
381 |
public function atime($file) { |
|
0
|
382 |
$file = ltrim($file, '/'); |
|
|
383 |
return fileatime('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
|
|
384 |
} |
|
|
385 |
|
|
5
|
386 |
/** |
|
|
387 |
* @param string $file |
|
|
388 |
* @return int |
|
|
389 |
*/ |
|
|
390 |
public function mtime($file) { |
|
0
|
391 |
$file = ltrim($file, '/'); |
|
|
392 |
return filemtime('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
|
|
393 |
} |
|
|
394 |
|
|
5
|
395 |
/** |
|
|
396 |
* @param string $file |
|
|
397 |
* @return int |
|
|
398 |
*/ |
|
|
399 |
public function size($file) { |
|
0
|
400 |
$file = ltrim($file, '/'); |
|
|
401 |
return filesize('ssh2.sftp://' . $this->sftp_link . '/' . $file); |
|
|
402 |
} |
|
|
403 |
|
|
5
|
404 |
/** |
|
|
405 |
* @param string $file |
|
|
406 |
* @param int $time |
|
|
407 |
* @param int $atime |
|
|
408 |
*/ |
|
|
409 |
public function touch($file, $time = 0, $atime = 0) { |
|
0
|
410 |
//Not implemented. |
|
|
411 |
} |
|
|
412 |
|
|
5
|
413 |
/** |
|
|
414 |
* @param string $path |
|
|
415 |
* @param mixed $chmod |
|
|
416 |
* @param mixed $chown |
|
|
417 |
* @param mixed $chgrp |
|
|
418 |
* @return bool |
|
|
419 |
*/ |
|
|
420 |
public function mkdir($path, $chmod = false, $chown = false, $chgrp = false) { |
|
0
|
421 |
$path = untrailingslashit($path); |
|
|
422 |
if ( empty($path) ) |
|
|
423 |
return false; |
|
|
424 |
|
|
|
425 |
if ( ! $chmod ) |
|
|
426 |
$chmod = FS_CHMOD_DIR; |
|
|
427 |
if ( ! ssh2_sftp_mkdir($this->sftp_link, $path, $chmod, true) ) |
|
|
428 |
return false; |
|
|
429 |
if ( $chown ) |
|
|
430 |
$this->chown($path, $chown); |
|
|
431 |
if ( $chgrp ) |
|
|
432 |
$this->chgrp($path, $chgrp); |
|
|
433 |
return true; |
|
|
434 |
} |
|
|
435 |
|
|
5
|
436 |
/** |
|
|
437 |
* @param string $path |
|
|
438 |
* @param bool $recursive |
|
|
439 |
* @return bool |
|
|
440 |
*/ |
|
|
441 |
public function rmdir($path, $recursive = false) { |
|
0
|
442 |
return $this->delete($path, $recursive); |
|
|
443 |
} |
|
|
444 |
|
|
5
|
445 |
/** |
|
|
446 |
* @param string $path |
|
|
447 |
* @param bool $include_hidden |
|
|
448 |
* @param bool $recursive |
|
|
449 |
* @return bool|array |
|
|
450 |
*/ |
|
|
451 |
public function dirlist($path, $include_hidden = true, $recursive = false) { |
|
0
|
452 |
if ( $this->is_file($path) ) { |
|
|
453 |
$limit_file = basename($path); |
|
|
454 |
$path = dirname($path); |
|
|
455 |
} else { |
|
|
456 |
$limit_file = false; |
|
|
457 |
} |
|
|
458 |
|
|
|
459 |
if ( ! $this->is_dir($path) ) |
|
|
460 |
return false; |
|
|
461 |
|
|
|
462 |
$ret = array(); |
|
|
463 |
$dir = @dir('ssh2.sftp://' . $this->sftp_link .'/' . ltrim($path, '/') ); |
|
|
464 |
|
|
|
465 |
if ( ! $dir ) |
|
|
466 |
return false; |
|
|
467 |
|
|
|
468 |
while (false !== ($entry = $dir->read()) ) { |
|
|
469 |
$struc = array(); |
|
|
470 |
$struc['name'] = $entry; |
|
|
471 |
|
|
|
472 |
if ( '.' == $struc['name'] || '..' == $struc['name'] ) |
|
|
473 |
continue; //Do not care about these folders. |
|
|
474 |
|
|
|
475 |
if ( ! $include_hidden && '.' == $struc['name'][0] ) |
|
|
476 |
continue; |
|
|
477 |
|
|
|
478 |
if ( $limit_file && $struc['name'] != $limit_file ) |
|
|
479 |
continue; |
|
|
480 |
|
|
|
481 |
$struc['perms'] = $this->gethchmod($path.'/'.$entry); |
|
|
482 |
$struc['permsn'] = $this->getnumchmodfromh($struc['perms']); |
|
|
483 |
$struc['number'] = false; |
|
|
484 |
$struc['owner'] = $this->owner($path.'/'.$entry); |
|
|
485 |
$struc['group'] = $this->group($path.'/'.$entry); |
|
|
486 |
$struc['size'] = $this->size($path.'/'.$entry); |
|
|
487 |
$struc['lastmodunix']= $this->mtime($path.'/'.$entry); |
|
|
488 |
$struc['lastmod'] = date('M j',$struc['lastmodunix']); |
|
|
489 |
$struc['time'] = date('h:i:s',$struc['lastmodunix']); |
|
|
490 |
$struc['type'] = $this->is_dir($path.'/'.$entry) ? 'd' : 'f'; |
|
|
491 |
|
|
|
492 |
if ( 'd' == $struc['type'] ) { |
|
|
493 |
if ( $recursive ) |
|
|
494 |
$struc['files'] = $this->dirlist($path . '/' . $struc['name'], $include_hidden, $recursive); |
|
|
495 |
else |
|
|
496 |
$struc['files'] = array(); |
|
|
497 |
} |
|
|
498 |
|
|
|
499 |
$ret[ $struc['name'] ] = $struc; |
|
|
500 |
} |
|
|
501 |
$dir->close(); |
|
|
502 |
unset($dir); |
|
|
503 |
return $ret; |
|
|
504 |
} |
|
|
505 |
} |