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

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<?php
/**
* ownCloud
*
* @author Michael Gapczynski
* @copyright 2012 Michael Gapczynski mtgap@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/>.
*/
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class OC_Share_Backend_File implements OCP\Share_Backend_File_Dependent {
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const FORMAT_SHARED_STORAGE = 0;
const FORMAT_GET_FOLDER_CONTENTS = 1;
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const FORMAT_FILE_APP_ROOT = 2;
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const FORMAT_OPENDIR = 3;
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const FORMAT_GET_ALL = 4;
const FORMAT_PERMISSIONS = 5;
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private $path;
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public function isValidSource($itemSource, $uidOwner) {
$query = \OC_DB::prepare('SELECT `name` FROM `*PREFIX*filecache` WHERE `fileid` = ?');
$result = $query->execute(array($itemSource));
if ($row = $result->fetchRow()) {
$this->path = $row['name'];
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return true;
}
return false;
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}
public function getFilePath($itemSource, $uidOwner) {
if (isset($this->path)) {
$path = $this->path;
$this->path = null;
return $path;
}
return false;
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}
public function generateTarget($filePath, $shareWith, $exclude = null) {
$target = '/'.basename($filePath);
if (isset($exclude)) {
if ($pos = strrpos($target, '.')) {
$name = substr($target, 0, $pos);
$ext = substr($target, $pos);
} else {
$name = $target;
$ext = '';
}
$i = 2;
$append = '';
while (in_array($name.$append.$ext, $exclude)) {
$append = ' ('.$i.')';
$i++;
}
$target = $name.$append.$ext;
}
return $target;
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}
public function formatItems($items, $format, $parameters = null) {
if ($format == self::FORMAT_SHARED_STORAGE) {
// Only 1 item should come through for this format call
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return array(
'parent' => $items[key($items)]['parent'],
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'path' => $items[key($items)]['path'],
'storage' => $items[key($items)]['storage'],
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'permissions' => $items[key($items)]['permissions'],
'uid_owner' => $items[key($items)]['uid_owner']
);
} else if ($format == self::FORMAT_GET_FOLDER_CONTENTS) {
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$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'] = $item['mimetype'];
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$file['mimepart'] = $item['mimepart'];
$file['mtime'] = $item['mtime'];
$file['encrypted'] = $item['encrypted'];
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$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;
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}
return $files;
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} else if ($format == self::FORMAT_FILE_APP_ROOT) {
$mtime = 0;
$size = 0;
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foreach ($items as $item) {
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if ($item['mtime'] > $mtime) {
$mtime = $item['mtime'];
}
$size += (int)$item['size'];
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}
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return array(
'fileid' => -1,
'name' => 'Shared',
'mtime' => $mtime,
'mimetype' => 'httpd/unix-directory',
'size' => $size
);
} else if ($format == self::FORMAT_OPENDIR) {
$files = array();
foreach ($items as $item) {
$files[] = basename($item['file_target']);
}
return $files;
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} else if ($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 $filePermissions;
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}
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return array();
}
public static function getSource($target) {
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if ($target == '') {
return false;
}
$target = '/'.$target;
$target = rtrim($target, '/');
$pos = strpos($target, '/', 1);
// Get shared folder name
if ($pos !== false) {
$folder = substr($target, 0, $pos);
$source = \OCP\Share::getItemSharedWith('folder', $folder, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
if ($source) {
$source['path'] = $source['path'].substr($target, strlen($folder));
}
} else {
$source = \OCP\Share::getItemSharedWith('file', $target, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
}
if ($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'];
}
$source['fileOwner'] = $fileOwner;
return $source;
}
\OCP\Util::writeLog('files_sharing', 'File source not found for: '.$target, \OCP\Util::DEBUG);
return false;
}
}