John Goerzen [Mon, 1 Dec 2008 22:13:16 +0000 (16:13 -0600)]
Patch for signal handling to start a sync by Jim Pryor
Here's the way I'd like to use offlineimap on my laptop:
1. Have a regular cron job running infrequently. The cron job
checks to see
if I'm online, plugged in, and that no other copy of offlineimap is
running. If
all of these conditions are satisfied, it runs offlineimap just once:
"offlineimap -o -u Noninteractive.Quiet"
2. When I start up mutt, I do it by calling a wrapper script that
delays
until cron-started copies of offlineimap have finished, then starts
offlineimap
on its regular, stay-alive and keep checking schedule. When I quit
mutt, the
wrapper script tells offlineimap to stop.
This way I get frequent regular checks while I have mutt running, but
I don't
waste my battery/cpu checking frequently for mail when I'm not
interested in
it.
To make this work, though, it'd be nicer if it were easier to tell
offlineimap,
from the outside, things like "terminate cleanly now" and "when you've
finished
synching, then terminate instead of sleeping and synching again."
OK, to put my money where my mouth is, I attach two patches against
offlineimap
6.0.3.
The first, "cleanup.patch", cleans up a few spots that tend to throw
exceptions
for me as offlineimap is exiting from a KeyboardInterrupt.
The second adds signaling capabilities to offlineimap.
* sending a SIGTERM tells offlineimap to terminate immediately but
cleanly,
just as if "q" had been pressed in the GUI interface
* sending a SIGUSR1 tells every account to do a full sync asap: if
it's
sleeping, then wake up and do the sync now. If it's mid-sync, then
re-synch
any folders whose syncing has already been started or completed, and
continue
to synch the other, queued but not-yet-synched folders.
* sending a SIGHUP tells every account to die as soon as it can (but
not
immediately: only after finishing any synch it's now engaged in)
* sending a SIGUSR2 tells every account to do a full sync asap (as
with
SIGUSR1), then die
It's tricky to mix signals with threads, but I think I've done this
correctly.
I've been using it now for a few weeks without any obvious
problems. But I'm passing it
on so that others can review the code and test it out on their
systems. I developed the
patch when I was running Python 2.5.2, but to my knowledge I don't use
any Python 2.5-specific
code. Now I'm using the patch with Python 2.6.
Although I said "without any obvious problems," let me confess that
I'm
seeing offlineimap regularly choke when I do things like this: start
up
my offlineimap-wrapped copy of mutt, wait a while, put the machine to
sleep (not sure if offlineimap is active in the background or idling),
move to a different spot, wake the machine up again and it acquires a
new network, sometimes a wired network instead of wifi. Offlineimap
doesn't like that so much. I don't yet have any reason to think the
problems here come from my patches. But I'm just acknowledging them,
so
that if others are able to use offlineimap without any difficulty in
situations like I described, then maybe the fault is with my patches.
Mark Hymers [Fri, 23 May 2008 19:58:18 +0000 (14:58 -0500)]
Add support for ssl client certificates
This patch adds sslclientcert and sslclientkey configuration
options which are passed through to imaplib in order to allow
the use of client certificates for authentication.
Tue Nov 13 14:44:17 CST 2007 Mark Hymers <mhy@debian.org>
John Goerzen [Thu, 1 May 2008 20:20:56 +0000 (15:20 -0500)]
Apply darwin.patch from Vincent Beffara
fixes #20
04/27/2008 09:34 AM - Vincent Beffara
* File darwin.patch added
OK, I finally installed an IMAPS server on my iMac, so I could test a
little further. For some reason, fixing the read() method in
imaplibutil.py did not seem to work (it hung on connecting to the
server) - however, modifying the file imapserver.py similarly to the
non-SSL case fixed the crash.
I also reduced the chunk size to 100k instead of 1M, as 1M seemed to
still trigger the memory error in some cases. Ah, and I added a
platform test, so that the patch does essentially nothing on
non-Darwin machines ...
So, still no guarantee, but the attached patch works for me. Any
comments ?
(If noone here screams in horror at my code, I will include the patch
into the Fink package and see what happens there.)
Florian Friesdorf [Thu, 20 Mar 2008 12:15:37 +0000 (13:15 +0100)]
Ignore empty LocalStatus files
I created new IMAP folders on my server. In some moment I found offlineimap
crashed. The reason were empty LocalStatus files. From looking at the code I
have no explanation how those files came into existence.
Eric Dorland [Sun, 9 Mar 2008 05:46:51 +0000 (00:46 -0500)]
Bug#359213: Kerberos
* John Goerzen (jgoerzen@complete.org) wrote:
> tages 359213 help
> thanks
>
> Hi folks,
>
> Unfortunately, I lack both the expertise to add Kerberos
> authentication and a way to test this. A patch would be very welcome
> :-)
Well it was a bit unclear but there's a patch for offlineimap attached
to Guido's message:
I've tried it out and it works great! Except that if the Kerberos
layer throws an exception it wouldn't fail over to plain
authentication properly. Attached is a slightly reworked patch that I
tested it in the following situations:
1. python-kerberos uninstalled, with kerberos credentials.
Prompted for password authentication as expected.
2. python-kerberos installed, with kerberos credentials.
Keberos authentication was successful and my mail was fetched
without password prompting. Yeehaw!
3. python-kerberos installed, with no kerberos credentials.
Prompted for password authentication as expected.
I think those are all the interesting situations. So I think this is
ready to go in, with a Suggest on python-kerberos (>=
1.0+mk080218-1).
--
Eric Dorland <eric@kuroneko.ca>
ICQ: #61138586, Jabber: hooty@jabber.com
John Goerzen [Sat, 8 Mar 2008 13:47:53 +0000 (07:47 -0600)]
Attempt to fix a crashing bug in Gmail driver
refs deb#469598
Bug report received in Debian. User is having occasional trouble with Gmail
driver crashing, indicates problem may have started after switching to Gmail.
Gmail driver merged to tree in 81b86fb74 on 2008-01-03 and recently released
in beta tarballs.
BT shows:
File "/var/lib/python-support/python2.4/offlineimap/folder/Gmail.py", line 102, in processmessagesflags
attributehash = imaputil.flags2hash(imaputil.imapsplit(result)[1])
File "/var/lib/python-support/python2.4/offlineimap/imaputil.py", line 88, in imapsplit
for i in range(len(imapstring)):
TypeError: len() of unsized object
imap debug log shows:
imap: 29:58.16 > BEAL75 UID STORE 4887 +FLAGS (\Deleted)
imap: 29:58.47 < BEAL75 OK Success
imap: 29:58.47 matched r'(?P<tag>BEAL\d+) (?P<type>[A-Z]+) (?P<data>.*)' => ('BEAL75', 'OK', 'Success')
imap: imapsplit() called with input: None
imap: imapsplit() got a non-string input; working around.
looking at code for Gmail.py processmessagesflags, comments from Ricardo
indicate it was copied from the same function in folder/IMAP.py.
However, folder/IMAP.py has checks for this, added 2002-07-12 in 5342dacc & 817a10ce. Suspect that Gmail author believed those checks
superfluous for Gmail.
Copied checks from folder/IMAP.py to folder/Gmail.py.
self.processmessagesflags('+', uidlist, flags)
File "/usr/lib/python2.5/site-packages/offlineimap/folder/IMAP.py",
line 372, in processmessagesflags
myrights = imapobj.myrights(self.getfullname())[1][0].split()[1]
IndexError: list index out of range
John Goerzen [Mon, 3 Mar 2008 14:22:44 +0000 (08:22 -0600)]
Fix performance for SSL
Added WrappedIMAP4_SSL class to help fix up performance of SSL
Standard imaplib.py is really bad with this, since it reads one
character at a time.
Reported by Aaron Kaplan at
http://lists.complete.org/offlineimap@complete.org/2008/01/msg00012.html.gz
He wrote:
I just noticed that the version of offlineimap I've been using
(3.99.17) is well over four years old. How time flies. I haven't
had any problems with it, but out of curiosity I decided to pull in
5.99.2 from the fedora repository. It turns out to take
consistently over twice as long as the old version to sync the same
account. Is this expected?
He tracked it down at
http://lists.complete.org/offlineimap@complete.org/2008/02/msg00012.html.gz
The following changeset is the one responsible for the difference in
speed I was noticing between the imaplib.py that was packaged with
older versions of offlineimap and the one that comes with python:
* /offlineimap/head: changeset 169
More optimizations -- this time fix readline() to not work
character-by-character!
John Goerzen [Mon, 3 Mar 2008 04:25:05 +0000 (22:25 -0600)]
Fix handling of servers that return UIDs in some FETCH responses
closes #22
from pistore in OfflineIMAP #22:
When an IMAP flag update is performed for multiple messages, some IMAP
servers (e.g. Exchange) return the UID attribute only for some of the
FETCH untagged responses, as shown in the following log:
Function IMAPFolder.processmessagesflags is able to manage the servers
which return the UID and the servers which do not return it, but is
not able to deal with the mixed behavior shown above.
The problem is that the fragment of function
IMAPFolder.processmessagesflags that handles the responses with UID
attribute uses variable flags to store the list of flags of the
message in the IMAP format ("flags = attributehashFLAGS?"), while the
fragment that handles the responses without UID expects variable
"flags" to contain the list of modified flags passed to the function
in Maildir format ("self.messagelist[uid]flags?.append(flag)").
As a consequence, the wrong list of flags is used for the messages
without UID, leading to the addition of "strange" flags to the Maildir
messages:
Syncing messages IMAP[INBOX] -> Maildir[.]
Adding flags to 4 messages on Maildir[.]
Adding flags e to 4 messages on Maildir[.]
Adding flags d to 4 messages on Maildir[.]
Adding flags ) to 4 messages on Maildir[.]
Adding flags ( to 4 messages on Maildir[.]
Adding flags l to 4 messages on Maildir[.]
Adding flags n to 4 messages on Maildir[.]
Adding flags t to 4 messages on Maildir[.]
Adding flags \ to 4 messages on Maildir[.]
Adding flags D to 4 messages on Maildir[.]
Deleting flags T to 4 messages on Maildir[.]
Adding flags to 4 messages on LocalStatus[.]
Adding flags e to 4 messages on LocalStatus[.]
Adding flags d to 4 messages on LocalStatus[.]
Adding flags ) to 4 messages on LocalStatus[.]
Adding flags ( to 4 messages on LocalStatus[.]
Adding flags l to 4 messages on LocalStatus[.]
Adding flags n to 4 messages on LocalStatus[.]
Adding flags t to 4 messages on LocalStatus[.]
Adding flags \ to 4 messages on LocalStatus[.]
Adding flags D to 4 messages on LocalStatus[.]
Deleting flags T to 4 messages on LocalStatus[.]
Fix: use a different variable to store IMAP flags when managing
messages corresponding to responses with UID attribute, e.g.:
*** IMAP.py.orig Wed Aug 22 18:23:17 2007
--- IMAP.py Wed Aug 22 18:22:38 2007
*************** class IMAPFolder(BaseFolder):
*** 340,348 ****
if not ('UID' in attributehash and 'FLAGS' in
attributehash):
# Compensate for servers that don't return a UID
attribute.
continue
! flags = attributehash['FLAGS']
uid = long(attributehash['UID'])
! self.messagelist[uid]['flags'] =
imaputil.flagsimap2maildir(flags)
try:
needupdate.remove(uid)
except ValueError: # Let it slide if it's not
in the list
--- 340,348 ----
if not ('UID' in attributehash and 'FLAGS' in
attributehash):
# Compensate for servers that don't return a UID
attribute.
continue
! lflags = attributehash['FLAGS']
uid = long(attributehash['UID'])
! self.messagelist[uid]['flags'] =
imaputil.flagsimap2maildir(lflags)
try:
needupdate.remove(uid)
except ValueError: # Let it slide if it's not
in the list
02/03/08 14:04:35 changed by js
* attachment flags-fix.patch added.
Delete 02/03/08 14:05:24 changed by js ¶
Unfortunately I have to fetch some of my mail from an Exchange server
(Microsoft Exchange Server 2003 IMAP4rev1 server version 6.5.7638.1)
and I can confirm that the analysis of the problem is correct, and the
patch given here fixes the problem.
Looking at the code of the processmessagesflags() method I think it
generally is a bug that the "flags" parameter is reused as a local
variable, since the final "for uid in needupdate:" loop needs the
original value of "flags". This only worked by accident.
I'm attaching a unidiff version of the patch which applies cleanly
against Debian unstable's offlineimap 5.99.4.
Riccardo Murri [Thu, 3 Jan 2008 03:56:55 +0000 (04:56 +0100)]
Add Gmail IMAP special support.
New repository/folder classes to support "real deletion" of messages
thorugh Gmail's IMAP interface: to really delete a message in Gmail,
one has to move it to the Trash folder, rather than EXPUNGE it.