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<?php
// $Id$
/*
* Connection class.
*
* This class does file operations on directories not writeable by the
* webserver. It connects back to the server using some backend (for example
* FTP or SSH). To keep security the password should always be asked from the
* user and never stored.
*/
abstract class FileTransfer {
/**
* The constructer for the UpdateConnection class. This method is also called
* from the classes that extend this class and override this method.
*/
function __construct($settings) {
$this->username = $settings['username'];
$this->password = $settings['password'];
$this->hostname = isset($settings['hostname']) ? $settings['hostname'] : 'localhost';
if (isset($settings['port'])) {
$this->port = $settings['port'];
}
}
/**
* Implementation of the magic __get() method. If the connection isn't set to
* anything, this will call the connect() method and set it to and return the
* result; afterwards, the connection will be returned directly without using
* this method.
*/
function __get($name) {
static $connection;
if ($name == 'connection') {
$this->connection = $this->connect();
return $this->connection;
}
}
/**
* Copies a directory.
*
* @param $source
* The source path.
* @param $destination
* The destination path.
*/
protected function copyDirectory($source, $destination) {
$this->createDirectory($destination . basename($source));
foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST) as $filename => $file) {
$relative_path = basename($source) . substr($filename, strlen($source));
if ($file->isDir()) {
$this->createDirectory($destination . $relative_path);
}
else {
$this->copyFile($file->getPathName(), $destination . $relative_path);
}
}
}
/**
* Creates a directory.
*
* @param $directory
* The directory to be created.
*/
abstract function createDirectory($directory);
/**
* Removes a directory.
*
* @param $directory
* The directory to be removed.
*/
abstract function removeDirectory($directory);
/**
* Copies a file.
*
* @param $source
* The source file.
* @param $destination
* The destination file.
*/
abstract function copyFile($source, $destination);
/**
* Removes a file.
*
* @param $destination
* The destination file to be removed.
*/
abstract function removeFile($destination);
}
/**
* FileTransferException class.
*/
class FileTransferException extends Exception {
}
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