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#
# 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 <http://www.gnu.org/licenses/>.
import cgi
import io
import re
from twisted.internet import defer
from twisted.protocols.basic import FileSender
from twisted.python.log import msg
from twisted.web import server
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from pixelated.resources import respond_json_deferred
class AttachmentResource(Resource):
isLeaf = True
def __init__(self, mail_service, attachment_id):
Resource.__init__(self)
self.attachment_id = attachment_id
self.mail_service = mail_service
def render_GET(self, request):
def error_handler(failure):
msg(failure, 'attachment not found')
request.code = 404
request.finish()
encoding = request.args.get('encoding', [None])[0]
filename = request.args.get('filename', [self.attachment_id])[0]
request.setHeader(b'Content-Type', b'application/force-download')
request.setHeader(b'Content-Disposition', bytes('attachment; filename=' + filename))
d = self._send_attachment(encoding, filename, request)
d.addErrback(error_handler)
return server.NOT_DONE_YET
@defer.inlineCallbacks
def _send_attachment(self, encoding, filename, request):
attachment = yield self.mail_service.attachment(self.attachment_id)
bytes_io = io.BytesIO(attachment['content'])
try:
request.code = 200
yield FileSender().beginFileTransfer(bytes_io, request)
finally:
bytes_io.close()
request.finish()
def _extract_mimetype(self, content_type):
match = re.compile('([A-Za-z-]+\/[A-Za-z-]+)').search(content_type)
return match.group(1)
class AttachmentsResource(Resource):
BASE_URL = 'attachment'
def __init__(self, mail_service):
Resource.__init__(self)
self.mail_service = mail_service
def getChild(self, attachment_id, request):
return AttachmentResource(self.mail_service, attachment_id)
def render_POST(self, request):
fields = cgi.FieldStorage(fp=request.content, headers=(request.getAllHeaders()),
environ={'REQUEST_METHOD': 'POST'})
_file = fields['attachment']
deferred = self.mail_service.save_attachment(_file.value, _file.type)
def send_location(attachment_id):
request.headers['Location'] = '/%s/%s' % (self.BASE_URL, attachment_id)
response_json = {"ident": attachment_id,
"content-type": _file.type,
"encoding": "base64", # hard coded for now -- not really used
"name": _file.filename,
"size": len(_file.value)}
respond_json_deferred(response_json, request, status_code=201)
def error_handler(error):
print error
respond_json_deferred({"message": "Something went wrong. Attachment not saved."}, request, status_code=500)
deferred.addCallback(send_location)
deferred.addErrback(error_handler)
return NOT_DONE_YET
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