1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
#
# 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 io
import re
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.internet import defer
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):
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)
|
