nextcloud/apps/files_sharing/lib/share/file.php

201 lines
6.1 KiB
PHP

<?php
/**
* ownCloud
*
* @author Bjoern Schiessle, Michael Gapczynski
* @copyright 2012 Michael Gapczynski <mtgap@owncloud.com>
* 2014 Bjoern Schiessle <schiessle@owncloud.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 Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
class OC_Share_Backend_File implements OCP\Share_Backend_File_Dependent {
const FORMAT_SHARED_STORAGE = 0;
const FORMAT_GET_FOLDER_CONTENTS = 1;
const FORMAT_FILE_APP_ROOT = 2;
const FORMAT_OPENDIR = 3;
const FORMAT_GET_ALL = 4;
const FORMAT_PERMISSIONS = 5;
const FORMAT_TARGET_NAMES = 6;
private $path;
public function isValidSource($itemSource, $uidOwner) {
$path = \OC\Files\Filesystem::getPath($itemSource);
if ($path) {
// FIXME: attributes should not be set here,
// keeping this pattern for now to avoid unexpected
// regressions
$this->path = basename($path);
return true;
}
return false;
}
public function getFilePath($itemSource, $uidOwner) {
if (isset($this->path)) {
$path = $this->path;
$this->path = null;
return $path;
}
return false;
}
/**
* create unique target
* @param string $filePath
* @param string $shareWith
* @param string $exclude
* @return string
*/
public function generateTarget($filePath, $shareWith, $exclude = null) {
$target = '/'.basename($filePath);
// for group shares we return the target right away
if ($shareWith === false) {
return $target;
}
\OC\Files\Filesystem::initMountPoints($shareWith);
$view = new \OC\Files\View('/' . $shareWith . '/files');
$excludeList = \OCP\Share::getItemsSharedWithUser('file', $shareWith, self::FORMAT_TARGET_NAMES);
if (is_array($exclude)) {
$excludeList = array_merge($excludeList, $exclude);
}
return \OCA\Files_Sharing\Helper::generateUniqueTarget($target, $excludeList, $view);
}
public function formatItems($items, $format, $parameters = null) {
if ($format == self::FORMAT_SHARED_STORAGE) {
// Only 1 item should come through for this format call
return array(
'parent' => $items[key($items)]['parent'],
'path' => $items[key($items)]['path'],
'storage' => $items[key($items)]['storage'],
'permissions' => $items[key($items)]['permissions'],
'uid_owner' => $items[key($items)]['uid_owner'],
);
} else if ($format == self::FORMAT_GET_FOLDER_CONTENTS) {
$files = array();
foreach ($items as $item) {
$file = array();
$file['fileid'] = $item['file_source'];
$file['storage'] = $item['storage'];
$file['path'] = $item['file_target'];
$file['parent'] = $item['file_parent'];
$file['name'] = basename($item['file_target']);
$file['mimetype'] = $item['mimetype'];
$file['mimepart'] = $item['mimepart'];
$file['mtime'] = $item['mtime'];
$file['encrypted'] = $item['encrypted'];
$file['etag'] = $item['etag'];
$file['uid_owner'] = $item['uid_owner'];
$file['displayname_owner'] = $item['displayname_owner'];
$storage = \OC\Files\Filesystem::getStorage('/');
$cache = $storage->getCache();
if ($item['encrypted'] or ($item['unencrypted_size'] > 0 and $cache->getMimetype($item['mimetype']) === 'httpd/unix-directory')) {
$file['size'] = $item['unencrypted_size'];
$file['encrypted_size'] = $item['size'];
} else {
$file['size'] = $item['size'];
}
$files[] = $file;
}
return $files;
} else if ($format == self::FORMAT_OPENDIR) {
$files = array();
foreach ($items as $item) {
$files[] = basename($item['file_target']);
}
return $files;
} else if ($format == self::FORMAT_GET_ALL) {
$ids = array();
foreach ($items as $item) {
$ids[] = $item['file_source'];
}
return $ids;
} else if ($format === self::FORMAT_PERMISSIONS) {
$filePermissions = array();
foreach ($items as $item) {
$filePermissions[$item['file_source']] = $item['permissions'];
}
return $filePermissions;
} else if ($format === self::FORMAT_TARGET_NAMES) {
$targets = array();
foreach ($items as $item) {
$targets[] = $item['file_target'];
}
return $targets;
}
return array();
}
/**
* resolve reshares to return the correct source item
* @param array $source
* @return array source item
*/
protected static function resolveReshares($source) {
if (isset($source['parent'])) {
$parent = $source['parent'];
while (isset($parent)) {
$query = \OC_DB::prepare('SELECT `parent`, `uid_owner` FROM `*PREFIX*share` WHERE `id` = ?', 1);
$item = $query->execute(array($parent))->fetchRow();
if (isset($item['parent'])) {
$parent = $item['parent'];
} else {
$fileOwner = $item['uid_owner'];
break;
}
}
} else {
$fileOwner = $source['uid_owner'];
}
if (isset($fileOwner)) {
$source['fileOwner'] = $fileOwner;
} else {
\OCP\Util::writeLog('files_sharing', "No owner found for reshare", \OCP\Util::ERROR);
}
return $source;
}
/**
* @param string $target
* @param string $mountPoint
* @param string $itemType
* @return array|false source item
*/
public static function getSource($target, $mountPoint, $itemType) {
if ($itemType === 'folder') {
$source = \OCP\Share::getItemSharedWith('folder', $mountPoint, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
if ($source && $target !== '') {
$source['path'] = $source['path'].'/'.$target;
}
} else {
$source = \OCP\Share::getItemSharedWith('file', $mountPoint, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
}
if ($source) {
return self::resolveReshares($source);
}
\OCP\Util::writeLog('files_sharing', 'File source not found for: '.$target, \OCP\Util::DEBUG);
return false;
}
}