# # Copyright (c) 2014 ThoughtWorks, Inc. # # Pixelated 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. # # Pixelated 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 Pixelated. If not, see . import io import re from twisted.protocols.basic import FileSender from twisted.python.log import err class AttachmentsController: def __init__(self, querier): self.querier = querier def attachment(self, request, attachment_id): encoding = request.args.get('encoding', [None])[0] filename = request.args.get('filename', [attachment_id])[0] attachment = self.querier.attachment(attachment_id, encoding) request.setHeader(b'Content-Type', b'application/force-download') request.setHeader(b'Content-Disposition', bytes('attachment; filename=' + filename)) bytes_io = io.BytesIO(attachment['content']) d = FileSender().beginFileTransfer(bytes_io, request) def cbFinished(ignored): bytes_io.close() request.finish() d.addErrback(err).addCallback(cbFinished) return d def _extract_mimetype(self, content_type): match = re.compile('([A-Za-z-]+\/[A-Za-z-]+)').search(content_type) return match.group(1)