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<?php
/**
* SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OCP\Files;
use OCP\Constants;
use OCP\Files\Mount\IMovableMount;
/**
* This class provides different helper functions related to WebDAV protocol
*
* @since 25.0.0
*/
class DavUtil {
/**
* Compute the fileId to use for dav responses
*
* @param int $id Id of the file returned by FileInfo::getId
* @since 25.0.0
*/
public static function getDavFileId(int $id): string {
$instanceId = \OC_Util::getInstanceId();
$id = sprintf('%08d', $id);
return $id . $instanceId;
}
/**
* Compute the format needed for returning permissions for dav
*
* @since 25.0.0
*/
public static function getDavPermissions(FileInfo $info): string {
$permissions = $info->getPermissions();
$p = '';
if ($info->isShared()) {
$p .= 'S';
}
if ($permissions & Constants::PERMISSION_SHARE) {
$p .= 'R';
}
if ($info->isMounted()) {
$p .= 'M';
}
if ($permissions & Constants::PERMISSION_READ) {
$p .= 'G';
}
if ($permissions & Constants::PERMISSION_DELETE) {
$p .= 'D';
}
if ($permissions & Constants::PERMISSION_UPDATE) {
$p .= 'NV'; // Renameable, Movable
}
// since we always add update permissions for the root of movable mounts
// we need to check the shared cache item directly to determine if it's writable
$storage = $info->getStorage();
if ($info->getInternalPath() === '' && $info->getMountPoint() instanceof IMovableMount) {
$rootEntry = $storage->getCache()->get('');
$isWritable = $rootEntry->getPermissions() & Constants::PERMISSION_UPDATE;
} else {
$isWritable = $permissions & Constants::PERMISSION_UPDATE;
}
if ($info->getType() === FileInfo::TYPE_FILE) {
if ($isWritable) {
$p .= 'W';
}
} else {
if ($permissions & Constants::PERMISSION_CREATE) {
$p .= 'CK';
}
}
return $p;
}
}
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