nextcloud / server

			if (!($node instanceof File)) {

				return new JSONResponse(['data' => ['message' => $this->l->t('Please select a file.')]]);

			}

			if ($node->getSize() > 20*1024*1024) {

				return new JSONResponse(

					['data' => ['message' => $this->l->t('File is too big')]],

					Http::STATUS_BAD_REQUEST

				);

			}

			$content = $node->getContent();

		} elseif (!is_null($files)) {

			if (

				 is_uploaded_file($files['tmp_name'][0]) &&

				!\OC\Files\Filesystem::isFileBlacklisted($files['tmp_name'][0])

			) {

				if ($files['size'][0] > 20*1024*1024) {

					return new JSONResponse(

						['data' => ['message' => $this->l->t('File is too big')]],

						Http::STATUS_BAD_REQUEST

					);

				}

				$this->cache->set('avatar_upload', file_get_contents($files['tmp_name'][0]), 7200);

				$content = $this->cache->get('avatar_upload');

				unlink($files['tmp_name'][0]);