CWebDavDiskDispatcher::processActionUpdate

public function processActionUpdate(array $params)
{
	$this->checkRequiredParams($params, array('storageExtra', 'storageId', 'name'));

	$tmpFile = $parentFolderId = $targetSectionId = $elementId = null;
	$storage = $this->getStorageObject($params['storageExtra'], $params['storageId']);
	$filename = $params['name'];
	$token = empty($params['token'])? null : $params['token'];
	$inRoot = (bool)$params['inRoot'];
	$isUpdate = (bool)$params['update'];

	if($token && !($tmpFile = CWebDavTmpFile::buildByName($token)))
	{
		throw new Exception('Not found file by token');
	}

	if(!$storage->isCorrectName($filename, $msg))
	{
		$tmpFile && ($tmpFile->delete());
		return $this->sendResponse(array(
			'status' => static::STATUS_DENIED,
			'message' => $msg,
		));
	}

	if($inRoot)
	{
		$storageExtra = $storage->getStorageExtra();
		$targetSectionId = $storageExtra['sectionId'];
		$parentFolderId = $storageExtra['sectionId'];
	}
	else
	{
		$this->checkRequiredParams($params, array('parentExtra'));

		$parentFolderExtra = $storage->parseElementExtra($params['parentExtra']);
		$targetSectionId = $parentFolderExtra['id'];
		$parentFolderId = $parentFolderExtra['id'];
	}

	if($isUpdate)
	{
		$this->checkRequiredParams($params, array('id', 'version'));
		$version = $params['version'];
		$fileExtra = $storage->parseElementExtra($params['extra']);
		$elementId = $fileExtra['id'];

		$file = $storage->getFile($params['id'], $fileExtra);
		if(empty($file))
		{
			return $this->sendResponse(array(
				'status' => static::STATUS_NOT_FOUND,
			));
		}
		if($storage::compareVersion($file['version'], $version) > 0)
		{
			$file['status'] = static::STATUS_OLD_VERSION;
			return $this->sendResponse($file);
		}

		//todo simple check for move/rename
		if($filename != $file['extra']['name'] || $parentFolderId != $file['extra']['sectionId'])
		{
			if(!$storage->isUnique($filename, $parentFolderId))
			{
				$file['status'] = static::STATUS_OLD_VERSION;
				return $this->sendResponse($file);
			}

			if($filename != $file['extra']['name'])
			{
				$file = $storage->renameFile($filename, $elementId, $parentFolderId);
				if(!$file)
				{
					return $this->sendError('Error in rename (update) file');
				}
			}

			if($parentFolderId != $file['extra']['sectionId'])
			{
				$file = $storage->moveFile($filename, $elementId, $parentFolderId);
			}

			if(!$file)
			{
				return $this->sendError('Error in move/rename (update) file');
			}

			if(!$tmpFile)
			{
				return $this->sendSuccess($file);
			}
		}
		unset($file);

		if($tmpFile) //update content
		{
			$file = $storage->updateFile($filename, $elementId, $tmpFile);
			if($file)
			{
				CWebDavTools::runEvent(static::ON_AFTER_DISK_FILE_UPDATE, array($file['extra']['id'], $file));
				return $this->sendSuccess($file);
			}
			return $this->sendResponse(array(
				'status' => static::STATUS_DENIED,
				'message'=> 'Error in updateFile',
			));
		}
	}
	else
	{
		if(!$storage->isUnique($filename, $targetSectionId, $opponentId))
		{
			$opponentFile = array();
			if($opponentId)
			{
				$opponentFile = $storage->getFile(null, array('id' => $opponentId), true);
			}
			$opponentFile['status'] = static::STATUS_OLD_VERSION;

			return $this->sendResponse($opponentFile);
		}
		$newFile = $storage->addFile($filename, $targetSectionId, $tmpFile);
		if($newFile)
		{
			CWebDavTools::runEvent(static::ON_AFTER_DISK_FILE_ADD, array($newFile['extra']['id'], $newFile));
			return $this->sendSuccess($newFile);
		}
		//else denied
	}

	return $this->sendResponse(array(
		'status' => static::STATUS_DENIED,
		'message'=> 'Error in add/update file',
	));
}