server/apps/files_trashbin/ajax/preview.php
Morris Jobke f56ae37e8f
Opening the trashbin causes errors in log for files without preview
* put a file without a generated preview in the trashbin
  (e.g. a *.docx file)
* open the trashbin
* following errors will show up in the nextcloud.log:
	- filesize(): stat failed for ...
	- fopen(...): failed to open stream: No such file or directory at ...
	- fread() expects parameter 1 to be resource, boolean given at ...
	- fclose() expects parameter 1 to be resource, boolean given at ...
	- imagecreatefromstring(): Empty string or invalid image at ...

This is because the preview code tries to load an SVG image, which
is obviously only text.

The fix simply handles this before the loading happens and the web UI
keeps showing the default mimetype icon.
2016-09-09 13:53:06 +02:00

80 lines
2.6 KiB
PHP

<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Björn Schießle <bjoern@schiessle.org>
* @author Georg Ehrke <georg@owncloud.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @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/>
*
*/
\OC_Util::checkLoggedIn();
\OC::$server->getSession()->close();
if(!\OC_App::isEnabled('files_trashbin')){
exit;
}
$file = array_key_exists('file', $_GET) ? (string) $_GET['file'] : '';
$maxX = array_key_exists('x', $_GET) ? (int) $_GET['x'] : '44';
$maxY = array_key_exists('y', $_GET) ? (int) $_GET['y'] : '44';
$scalingUp = array_key_exists('scalingup', $_GET) ? (bool) $_GET['scalingup'] : true;
if($file === '') {
\OC_Response::setStatus(400); //400 Bad Request
\OCP\Util::writeLog('core-preview', 'No file parameter was passed', \OCP\Util::DEBUG);
exit;
}
if($maxX === 0 || $maxY === 0) {
\OC_Response::setStatus(400); //400 Bad Request
\OCP\Util::writeLog('core-preview', 'x and/or y set to 0', \OCP\Util::DEBUG);
exit;
}
try{
$preview = new \OC\Preview(\OC_User::getUser(), 'files_trashbin/files', $file);
$view = new \OC\Files\View('/'.\OC_User::getUser(). '/files_trashbin/files');
if ($view->is_dir($file)) {
$mimetype = 'httpd/unix-directory';
} else {
$pathInfo = pathinfo(ltrim($file, '/'));
$fileName = $pathInfo['basename'];
// if in root dir
if ($pathInfo['dirname'] === '.') {
// cut off the .d* suffix
$i = strrpos($fileName, '.');
if ($i !== false) {
$fileName = substr($fileName, 0, $i);
}
}
$mimetype = \OC::$server->getMimeTypeDetector()->detectPath($fileName);
}
$preview->setMimetype($mimetype);
$preview->setMaxX($maxX);
$preview->setMaxY($maxY);
$preview->setScalingUp($scalingUp);
$preview->showPreview();
} catch (\OC\PreviewNotAvailableException $e) {
\OC_Response::setStatus(404);
}catch(\Exception $e) {
\OC_Response::setStatus(500);
\OCP\Util::writeLog('core', $e->getmessage(), \OCP\Util::DEBUG);
}