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sources/apps/documents/lib/genesis.php
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<?php
/**
* ownCloud - Documents App
*
* @author Victor Dubiniuk
* @copyright 2013 Victor Dubiniuk victor.dubiniuk@gmail.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Documents;
class Genesis {
const DOCUMENTS_DIRNAME='/documents';
protected $view;
protected $path;
protected $hash;
/**
* Create new genesis document
* @param OCA\Documents\View $view Filesystem view with root '/user/files'
* @param string $path relative path
* @param string $owner file owner
* */
public function __construct(\OCA\Documents\View $view, $path, $owner){
$this->view = new View('/' . $owner);
if (!$this->view->file_exists(self::DOCUMENTS_DIRNAME)){
$this->view->mkdir(self::DOCUMENTS_DIRNAME );
}
$this->hash = $this->getDocumentHash($view, $path);
$this->path = self::DOCUMENTS_DIRNAME . '/' . $this->hash . '.odt';
if (!$this->view->file_exists($this->path)){
//copy new genesis to /user/documents/{hash}.odt
// get decrypted content
$content = $view->file_get_contents($path);
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$this->view->file_put_contents($this->path, $content);
\OC_FileProxy::$enabled = $proxyStatus;
}
try {
$this->validate($this->view, $this->path);
} catch (\Exception $e){
throw new \Exception('Failed to copy genesis');
}
}
public function getPath(){
return $this->path;
}
public function getHash(){
return $this->hash;
}
public static function getHashByPath($path){
return preg_replace('|([a-zA-Z0-9])*\..*$|', '\1', $path);
}
protected function getDocumentHash($view, $path){
$this->validate($view, $path);
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$hash = sha1($view->file_get_contents($path));
\OC_FileProxy::$enabled = $proxyStatus;
return $hash;
}
/**
* Check if genesis is valid
* @param OCA\Documents\View $view
* @param string $path relative to the view
* @throws \Exception
*/
protected function validate($view, $path){
if (!$view->file_exists($path)){
throw new \Exception('Document not found ' . $path);
}
if (!$view->is_file($path)){
throw new \Exception('Object ' . $path . ' is not a file.');
}
//TODO check if it is a valid odt
}
}
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