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<?php
/**
* @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\WorkflowEngine\Check;
use OCA\WorkflowEngine\Entity\File;
use OCP\IL10N;
use OCP\IRequest;
use OCP\Util;
use OCP\WorkflowEngine\ICheck;
class FileSize implements ICheck {
/** @var int */
protected $size;
/** @var IL10N */
protected $l;
/** @var IRequest */
protected $request;
/**
* @param IL10N $l
* @param IRequest $request
*/
public function __construct(IL10N $l, IRequest $request) {
$this->l = $l;
$this->request = $request;
}
/**
* @param string $operator
* @param string $value
* @return bool
*/
public function executeCheck($operator, $value) {
$size = $this->getFileSizeFromHeader();
$value = Util::computerFileSize($value);
if ($size !== false) {
switch ($operator) {
case 'less':
return $size < $value;
case '!less':
return $size >= $value;
case 'greater':
return $size > $value;
case '!greater':
return $size <= $value;
}
}
return false;
}
/**
* @param string $operator
* @param string $value
* @throws \UnexpectedValueException
*/
public function validateCheck($operator, $value) {
if (!in_array($operator, ['less', '!less', 'greater', '!greater'])) {
throw new \UnexpectedValueException($this->l->t('The given operator is invalid'), 1);
}
if (!preg_match('/^[0-9]+[ ]?[kmgt]?b$/i', $value)) {
throw new \UnexpectedValueException($this->l->t('The given file size is invalid'), 2);
}
}
/**
* @return string
*/
protected function getFileSizeFromHeader() {
if ($this->size !== null) {
return $this->size;
}
$size = $this->request->getHeader('OC-Total-Length');
if ($size === '') {
if (in_array($this->request->getMethod(), ['POST', 'PUT'])) {
$size = $this->request->getHeader('Content-Length');
}
}
if ($size === '') {
$size = false;
}
$this->size = $size;
return $this->size;
}
public function supportedEntities(): array {
return [ File::class ];
}
public function isAvailableForScope(int $scope): bool {
return true;
}
}
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