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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bart Visscher <bartv@thisnet.nl>
* @author Björn Schießle <bjoern@schiessle.org>
* @author Felix Moeller <mail@felixmoeller.de>
* @author Joas Schilling <coding@schilljs.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Philipp Kapfer <philipp.kapfer@gmx.at>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Senorsen <senorsen.zhang@gmail.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\Files_External\Lib\Storage;
use Icewind\Streams\CallbackWrapper;
use Icewind\Streams\RetryWrapper;
class FTP extends StreamWrapper{
private $password;
private $user;
private $host;
private $secure;
private $root;
private static $tempFiles=array();
public function __construct($params) {
if (isset($params['host']) && isset($params['user']) && isset($params['password'])) {
$this->host=$params['host'];
$this->user=$params['user'];
$this->password=$params['password'];
if (isset($params['secure'])) {
$this->secure = $params['secure'];
} else {
$this->secure = false;
}
$this->root=isset($params['root'])?$params['root']:'/';
if ( ! $this->root || $this->root[0]!=='/') {
$this->root='/'.$this->root;
}
if (substr($this->root, -1) !== '/') {
$this->root .= '/';
}
} else {
throw new \Exception('Creating FTP storage failed');
}
}
public function getId(){
return 'ftp::' . $this->user . '@' . $this->host . '/' . $this->root;
}
/**
* construct the ftp url
* @param string $path
* @return string
*/
public function constructUrl($path) {
$url='ftp';
if ($this->secure) {
$url.='s';
}
$url.='://'.urlencode($this->user).':'.urlencode($this->password).'@'.$this->host.$this->root.$path;
return $url;
}
/**
* Unlinks file or directory
* @param string $path
*/
public function unlink($path) {
if ($this->is_dir($path)) {
return $this->rmdir($path);
}
else {
$url = $this->constructUrl($path);
$result = unlink($url);
clearstatcache(true, $url);
return $result;
}
}
public function fopen($path,$mode) {
switch($mode) {
case 'r':
case 'rb':
case 'w':
case 'wb':
case 'a':
case 'ab':
//these are supported by the wrapper
$context = stream_context_create(array('ftp' => array('overwrite' => true)));
$handle = fopen($this->constructUrl($path), $mode, false, $context);
return RetryWrapper::wrap($handle);
case 'r+':
case 'w+':
case 'wb+':
case 'a+':
case 'x':
case 'x+':
case 'c':
case 'c+':
//emulate these
if (strrpos($path, '.')!==false) {
$ext=substr($path, strrpos($path, '.'));
} else {
$ext='';
}
$tmpFile=\OCP\Files::tmpFile($ext);
if ($this->file_exists($path)) {
$this->getFile($path, $tmpFile);
}
$handle = fopen($tmpFile, $mode);
return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
$this->writeBack($tmpFile, $path);
});
}
return false;
}
public function writeBack($tmpFile, $path) {
$this->uploadFile($tmpFile, $path);
unlink($tmpFile);
}
/**
* check if php-ftp is installed
*/
public static function checkDependencies() {
if (function_exists('ftp_login')) {
return(true);
} else {
return array('ftp');
}
}
}