<?php

/**

 * WordPress FTP Filesystem.

 *

 * @package WordPress

 * @subpackage Filesystem

 */

/**

 * WordPress Filesystem Class for implementing FTP.

 *

 * @since 2.5

 * @package WordPress

 * @subpackage Filesystem

 * @uses WP_Filesystem_Base Extends class

 */

class WP_Filesystem_FTPext extends WP_Filesystem_Base {

	var $link;

	var $errors = null;

	var $options = array();

	function __construct($opt='') {

		$this->method = 'ftpext';

		$this->errors = new WP_Error();

		//Check if possible to use ftp functions.

		if ( ! extension_loaded('ftp') ) {

			$this->errors->add('no_ftp_ext', __('The ftp PHP extension is not available'));

			return false;

		}

		// Set defaults:

		//This Class uses the timeout on a per-connection basis, Others use it on a per-action basis.

		if ( ! defined('FS_TIMEOUT') )

			define('FS_TIMEOUT', 240);

		if ( empty($opt['port']) )

			$this->options['port'] = 21;

		else

			$this->options['port'] = $opt['port'];

		if ( empty($opt['hostname']) )

			$this->errors->add('empty_hostname', __('FTP hostname is required'));

		else

			$this->options['hostname'] = $opt['hostname'];

		if ( ! empty($opt['base']) )

			$this->wp_base = $opt['base'];

		// Check if the options provided are OK.

		if ( empty($opt['username']) )

			$this->errors->add('empty_username', __('FTP username is required'));

		else

			$this->options['username'] = $opt['username'];

		if ( empty($opt['password']) )

			$this->errors->add('empty_password', __('FTP password is required'));

		else

			$this->options['password'] = $opt['password'];

		$this->options['ssl'] = false;

		if ( isset($opt['connection_type']) && 'ftps' == $opt['connection_type'] )

			$this->options['ssl'] = true;

	}

	function connect() {

		if ( isset($this->options['ssl']) && $this->options['ssl'] && function_exists('ftp_ssl_connect') )

			$this->link = @ftp_ssl_connect($this->options['hostname'], $this->options['port'], FS_CONNECT_TIMEOUT);

		else

			$this->link = @ftp_connect($this->options['hostname'], $this->options['port'], FS_CONNECT_TIMEOUT);

		if ( ! $this->link ) {

			$this->errors->add('connect', sprintf(__('Failed to connect to FTP Server %1$s:%2$s'), $this->options['hostname'], $this->options['port']));

			return false;

		}

		if ( ! @ftp_login($this->link,$this->options['username'], $this->options['password']) ) {

			$this->errors->add('auth', sprintf(__('Username/Password incorrect for %s'), $this->options['username']));

			return false;

		}

		//Set the Connection to use Passive FTP

		@ftp_pasv( $this->link, true );

		if ( @ftp_get_option($this->link, FTP_TIMEOUT_SEC) < FS_TIMEOUT )

			@ftp_set_option($this->link, FTP_TIMEOUT_SEC, FS_TIMEOUT);

		return true;

	}

	function get_contents($file, $type = '', $resumepos = 0 ) {

		if ( empty($type) )

			$type = FTP_BINARY;

		$tempfile = wp_tempnam($file);

		$temp = fopen($tempfile, 'w+');

		if ( ! $temp )

			return false;

		if ( ! @ftp_fget($this->link, $temp, $file, $type, $resumepos) )

			return false;

		fseek($temp, 0); //Skip back to the start of the file being written to

		$contents = '';

		while ( ! feof($temp) )

			$contents .= fread($temp, 8192);

		fclose($temp);

		unlink($tempfile);

		return $contents;

	}

	function get_contents_array($file) {

		return explode("\n", $this->get_contents($file));

	}

	function put_contents($file, $contents, $mode = false ) {

		$tempfile = wp_tempnam($file);

		$temp = fopen($tempfile, 'w+');

		if ( ! $temp )

			return false;

		fwrite($temp, $contents);

		fseek($temp, 0); //Skip back to the start of the file being written to

		$type = $this->is_binary($contents) ? FTP_BINARY : FTP_ASCII;

		$ret = @ftp_fput($this->link, $file, $temp, $type);

		fclose($temp);

		unlink($tempfile);

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

		return $ret;

	}

	function cwd() {

		$cwd = @ftp_pwd($this->link);

		if ( $cwd )

			$cwd = trailingslashit($cwd);

		return $cwd;

	}

	function chdir($dir) {

		return @ftp_chdir($this->link, $dir);

	}

	function chgrp($file, $group, $recursive = false ) {

		return false;

	}

	function chmod($file, $mode = false, $recursive = false) {

		if ( ! $mode ) {

			if ( $this->is_file($file) )

				$mode = FS_CHMOD_FILE;

			elseif ( $this->is_dir($file) )

				$mode = FS_CHMOD_DIR;

			else

				return false;

		}

		// chmod any sub-objects if recursive.

		if ( $recursive && $this->is_dir($file) ) {

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

			foreach ( (array)$filelist as $filename => $filemeta )

				$this->chmod($file . '/' . $filename, $mode, $recursive);

		}

		// chmod the file or directory

		if ( ! function_exists('ftp_chmod') )

			return (bool)@ftp_site($this->link, sprintf('CHMOD %o %s', $mode, $file));

		return (bool)@ftp_chmod($this->link, $mode, $file);

	}

	function chown($file, $owner, $recursive = false ) {

		return false;

	}

	function owner($file) {

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

		return $dir[$file]['owner'];

	}

	function getchmod($file) {

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

		return $dir[$file]['permsn'];

	}

	function group($file) {

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

		return $dir[$file]['group'];

	}

	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);

	}

	function move($source, $destination, $overwrite = false) {

		return ftp_rename($this->link, $source, $destination);

	}

	function delete($file, $recursive = false, $type = false) {

		if ( empty($file) )

			return false;

		if ( 'f' == $type || $this->is_file($file) )

			return @ftp_delete($this->link, $file);

		if ( !$recursive )

			return @ftp_rmdir($this->link, $file);

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

		if ( !empty($filelist) )

			foreach ( $filelist as $delete_file )

				$this->delete( trailingslashit($file) . $delete_file['name'], $recursive, $delete_file['type'] );

		return @ftp_rmdir($this->link, $file);

	}

	function exists($file) {

		$list = @ftp_nlist($this->link, $file);

		return !empty($list); //empty list = no file, so invert.

	}

	function is_file($file) {

		return $this->exists($file) && !$this->is_dir($file);

	}

	function is_dir($path) {

		$cwd = $this->cwd();

		$result = @ftp_chdir($this->link, trailingslashit($path) );

		if ( $result && $path == $this->cwd() || $this->cwd() != $cwd ) {

			@ftp_chdir($this->link, $cwd);

			return true;

		}

		return false;

	}

	function is_readable($file) {

		//Get dir list, Check if the file is readable by the current user??

		return true;

	}

	function is_writable($file) {

		//Get dir list, Check if the file is writable by the current user??

		return true;

	}

	function atime($file) {

		return false;

	}

	function mtime($file) {

		return ftp_mdtm($this->link, $file);

	}

	function size($file) {

		return ftp_size($this->link, $file);

	}

	function touch($file, $time = 0, $atime = 0) {

		return false;

	}

	function mkdir($path, $chmod = false, $chown = false, $chgrp = false) {

		$path = untrailingslashit($path);

		if ( empty($path) )

			return false;

		if ( !@ftp_mkdir($this->link, $path) )

			return false;

		$this->chmod($path, $chmod);

		if ( $chown )

			$this->chown($path, $chown);

		if ( $chgrp )

			$this->chgrp($path, $chgrp);

		return true;

	}

	function rmdir($path, $recursive = false) {

		return $this->delete($path, $recursive);

	}

	function parselisting($line) {

		static $is_windows;

		if ( is_null($is_windows) )

			$is_windows = stripos( ftp_systype($this->link), 'win') !== false;

		if ( $is_windows && preg_match('/([0-9]{2})-([0-9]{2})-([0-9]{2}) +([0-9]{2}):([0-9]{2})(AM|PM) +([0-9]+|<DIR>) +(.+)/', $line, $lucifer) ) {

			$b = array();

			if ( $lucifer[3] < 70 )

				$lucifer[3] +=2000;

			else

				$lucifer[3] += 1900; // 4digit year fix

			$b['isdir'] = ( $lucifer[7] == '<DIR>');

			if ( $b['isdir'] )

				$b['type'] = 'd';

			else

				$b['type'] = 'f';

			$b['size'] = $lucifer[7];

			$b['month'] = $lucifer[1];

			$b['day'] = $lucifer[2];

			$b['year'] = $lucifer[3];

			$b['hour'] = $lucifer[4];

			$b['minute'] = $lucifer[5];

			$b['time'] = @mktime($lucifer[4] + (strcasecmp($lucifer[6], "PM") == 0 ? 12 : 0), $lucifer[5], 0, $lucifer[1], $lucifer[2], $lucifer[3]);

			$b['am/pm'] = $lucifer[6];

			$b['name'] = $lucifer[8];

		} elseif ( !$is_windows && $lucifer = preg_split('/[ ]/', $line, 9, PREG_SPLIT_NO_EMPTY)) {

			//echo $line."\n";

			$lcount = count($lucifer);

			if ( $lcount < 8 )

				return '';

			$b = array();

			$b['isdir'] = $lucifer[0]{0} === 'd';

			$b['islink'] = $lucifer[0]{0} === 'l';

			if ( $b['isdir'] )

				$b['type'] = 'd';

			elseif ( $b['islink'] )

				$b['type'] = 'l';

			else

				$b['type'] = 'f';

			$b['perms'] = $lucifer[0];

			$b['number'] = $lucifer[1];

			$b['owner'] = $lucifer[2];

			$b['group'] = $lucifer[3];

			$b['size'] = $lucifer[4];

			if ( $lcount == 8 ) {

				sscanf($lucifer[5], '%d-%d-%d', $b['year'], $b['month'], $b['day']);

				sscanf($lucifer[6], '%d:%d', $b['hour'], $b['minute']);

				$b['time'] = @mktime($b['hour'], $b['minute'], 0, $b['month'], $b['day'], $b['year']);

				$b['name'] = $lucifer[7];

			} else {

				$b['month'] = $lucifer[5];

				$b['day'] = $lucifer[6];

				if ( preg_match('/([0-9]{2}):([0-9]{2})/', $lucifer[7], $l2) ) {

					$b['year'] = date("Y");

					$b['hour'] = $l2[1];

					$b['minute'] = $l2[2];

				} else {

					$b['year'] = $lucifer[7];

					$b['hour'] = 0;

					$b['minute'] = 0;

				}

				$b['time'] = strtotime( sprintf('%d %s %d %02d:%02d', $b['day'], $b['month'], $b['year'], $b['hour'], $b['minute']) );

				$b['name'] = $lucifer[8];

			}

		}

		return $b;

	}

	function dirlist($path = '.', $include_hidden = true, $recursive = false) {

		if ( $this->is_file($path) ) {

			$limit_file = basename($path);

			$path = dirname($path) . '/';

		} else {

			$limit_file = false;

		}

		$pwd = @ftp_pwd($this->link);

		if ( ! @ftp_chdir($this->link, $path) ) // Cant change to folder = folder doesn't exist

			return false;

		$list = @ftp_rawlist($this->link, '-a', false);

		@ftp_chdir($this->link, $pwd);

		if ( empty($list) ) // Empty array = non-existent folder (real folder will show . at least)

			return false;

		$dirlist = array();

		foreach ( $list as $k => $v ) {

			$entry = $this->parselisting($v);

			if ( empty($entry) )

				continue;

			if ( '.' == $entry['name'] || '..' == $entry['name'] )

				continue;

			if ( ! $include_hidden && '.' == $entry['name'][0] )

				continue;

			if ( $limit_file && $entry['name'] != $limit_file)

				continue;

			$dirlist[ $entry['name'] ] = $entry;

		}