nextcloud / server

			if (!($node instanceof \OCP\Files\File)) {

				return new DataResponse(['data' => ['message' => $this->l->t('Please select a file.')]], Http::STATUS_OK, $headers);

			}

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

				return new DataResponse(

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

					Http::STATUS_BAD_REQUEST,

					$headers

				);

			}

			if ($node->getMimeType() !== 'image/jpeg' && $node->getMimeType() !== 'image/png') {

				return new JSONResponse(

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

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

			) {

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

					return new DataResponse(

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

						Http::STATUS_BAD_REQUEST,

						$headers

					);

				}

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

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

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