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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Lukas Reschke <lukas@statuscode.ch>
* @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/>
*
*/
namespace OCA\DAV\SystemTag;
use Sabre\DAV\Exception\Forbidden;
use Sabre\DAV\Exception\NotFound;
use Sabre\DAV\Exception\MethodNotAllowed;
use Sabre\DAV\Exception\Conflict;
use OCP\SystemTag\ISystemTag;
use OCP\SystemTag\ISystemTagManager;
use OCP\SystemTag\TagNotFoundException;
use OCP\SystemTag\TagAlreadyExistsException;
use OCP\IUser;
/**
* DAV node representing a system tag, with the name being the tag id.
*/
class SystemTagNode implements \Sabre\DAV\INode {
/**
* @var ISystemTag
*/
protected $tag;
/**
* @var ISystemTagManager
*/
protected $tagManager;
/**
* User
*
* @var IUser
*/
protected $user;
/**
* Whether to allow permissions for admins
*
* @var bool
*/
protected $isAdmin;
/**
* Sets up the node, expects a full path name
*
* @param ISystemTag $tag system tag
* @param IUser $user user
* @param bool $isAdmin whether to allow operations for admins
* @param ISystemTagManager $tagManager tag manager
*/
public function __construct(ISystemTag $tag, IUser $user, $isAdmin, ISystemTagManager $tagManager) {
$this->tag = $tag;
$this->user = $user;
$this->isAdmin = $isAdmin;
$this->tagManager = $tagManager;
}
/**
* Returns the id of the tag
*
* @return string
*/
public function getName() {
return $this->tag->getId();
}
/**
* Returns the system tag represented by this node
*
* @return ISystemTag system tag
*/
public function getSystemTag() {
return $this->tag;
}
/**
* Renames the node
*
* @param string $name The new name
*
* @throws MethodNotAllowed not allowed to rename node
*/
public function setName($name) {
throw new MethodNotAllowed();
}
/**
* Update tag
*
* @param string $name new tag name
* @param bool $userVisible user visible
* @param bool $userAssignable user assignable
* @throws NotFound whenever the given tag id does not exist
* @throws Forbidden whenever there is no permission to update said tag
* @throws Conflict whenever a tag already exists with the given attributes
*/
public function update($name, $userVisible, $userAssignable) {
try {
if (!$this->tagManager->canUserSeeTag($this->tag, $this->user)) {
throw new NotFound('Tag with id ' . $this->tag->getId() . ' does not exist');
}
if (!$this->tagManager->canUserAssignTag($this->tag, $this->user)) {
throw new Forbidden('No permission to update tag ' . $this->tag->getId());
}
// only admin is able to change permissions, regular users can only rename
if (!$this->isAdmin) {
// only renaming is allowed for regular users
if ($userVisible !== $this->tag->isUserVisible()
|| $userAssignable !== $this->tag->isUserAssignable()
) {
throw new Forbidden('No permission to update permissions for tag ' . $this->tag->getId());
}
}
$this->tagManager->updateTag($this->tag->getId(), $name, $userVisible, $userAssignable);
} catch (TagNotFoundException $e) {
throw new NotFound('Tag with id ' . $this->tag->getId() . ' does not exist');
} catch (TagAlreadyExistsException $e) {
throw new Conflict(
'Tag with the properties "' . $name . '", ' .
$userVisible . ', ' . $userAssignable . ' already exists'
);
}
}
/**
* Returns null, not supported
*
*/
public function getLastModified() {
return null;
}
public function delete() {
try {
if (!$this->isAdmin) {
throw new Forbidden('No permission to delete tag ' . $this->tag->getId());
}
if (!$this->tagManager->canUserSeeTag($this->tag, $this->user)) {
throw new NotFound('Tag with id ' . $this->tag->getId() . ' not found');
}
$this->tagManager->deleteTags($this->tag->getId());
} catch (TagNotFoundException $e) {
// can happen if concurrent deletion occurred
throw new NotFound('Tag with id ' . $this->tag->getId() . ' not found', 0, $e);
}
}
}
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