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add late delivery handler
[etc/mailfilter.git] / bin / process-tickler
1 #!/usr/bin/python2.5
2 # -*- coding: utf-8 -*-
3 #
4 # process-tickler – process message in tickler maildir
5 #
6 # Copyright © martin f. krafft <madduck@debian.org>
7 # Released under the terms of the Artistic Licence 2.0
8 #
9
10 import mailbox
11 import os
12 import sys
13 import time
14
15 HOME = os.getenv('HOME')
16 MAILDIR = os.path.join(HOME, '.maildir')
17 TICKLER_DIR = os.path.join(MAILDIR, '.tickler')
18 DEST_DIR = os.path.join(MAILDIR, '.resubmit')
19
20 tmd = mailbox.Maildir(TICKLER_DIR)
21 dmd = mailbox.Maildir(DEST_DIR)
22 msgids = dict()
23
24 def resubmit(key):
25     msg = tmd.get_message(key)
26     print >>sys.stdout, 'I: resubmit message %s' % key
27     if msg.has_key('X-Tickle-Delivered'):
28         msg.replace_header('X-Tickle-Delivered', time.strftime('%c'))
29     else:
30         msg.add_header('X-Tickle-Delivered', time.strftime('%c'))
31     dmd.add(msg)
32     tmd.discard(key)
33
34 for key, msg in tmd.iteritems():
35     msgid = msg.get('Message-Id')
36     if msgid is None:
37         print >>sys.stderr, 'W: message without ID: ' + key
38         resubmit(key)
39
40     tickle = msg.get('X-Tickle')
41     if tickle is None:
42         print >>sys.stderr, 'W: message without tickle information: ' + key
43         resubmit(key)
44
45     if msgids.get(msgid, None) is None:
46         msgids[msgid] = list()
47     msgids[msgid].append((int(tickle.split(' ', 1)[0]), key, msg))
48
49 for msgid, msgs in msgids.iteritems():
50     msgs.sort()
51     prev_tickle = None
52     for tickle, key, msg in msgs:
53         if tickle == prev_tickle:
54             print >>sys.stderr, 'I: discarding duplicate %s of message %s' % (key, msgid)
55             tmd.discard(key)
56             continue
57         prev_tickle = tickle
58
59         t = time.time()
60         if t >= tickle:
61             resubmit(key)
62         else:
63             print >>sys.stdout, 'I: message %s still has %d seconds' % (key,
64                     int(tickle - t))