Dear All,
I have made the attached patch to try and make offlineimap a bit more
stable in challenging situations. It's extremely useful in slow
connection environments - but sometimes if one account had the wrong
password or the connection went down then unfortunately the whole
program would crash.
I have tested this on our connection and tried throwing at it just about
every situation - connection, up down, up, down again, change password,
error whilst copying one message, etc. I have been running this patch
for the last 5 days or so syncing 6 accounts at the moment... It seems
to work and stay alive nicely (even if your connection does not)...
Hope that this can go in for the next release... Please let me know if
anyone notices any problems with this...
Regards,
-Mike
-- Attached file included as plaintext by Ecartis --
-- File: submit
From 1d6777cab23637eb830031c7cab0ae9b8589afd6 Mon Sep 17 00:00:00 2001
From: mike <mike@mikelaptop.(none)>
Date: Mon, 24 Aug 2009 19:37:59 +0430
Subject: [PATCH] This patch attempts to introduce a little more error handling - e.g.
if one account has an error because of a changed password or something
that should not affect the other accounts.
Specifically:
If one sync run has an issue this is in a try-except clause - if it
has an auto refresh period the thread will sleep and try again - this
could be quite useful in the event of the connection going down for a
little while, changed password etc.
If one folder cannot be created an error message will be displayed through
the UI and the program will continue (e.g. permission denied to create a folder)
If one message does not want to copy for whatever resaon an error message
will be displayed through the UI and at least the other messages will
be copied
If one folder run has an exception then the others will still run
Dear All,
Attached is the patch that I have developed to provide maxage and
maxsize options. You can thus sync only the last x days of messages and
exclude large messages. All details in the attached git file.
Regards,
-Mike
-- Attached file included as plaintext by Ecartis --
-- File: submit
From 04fead2b46a79675a5b29de6f2b4088b9c9448e5 Mon Sep 17 00:00:00 2001
From: mike <mike@mikelaptop.(none)>
Date: Sun, 16 Aug 2009 17:00:49 +0430
Subject: [PATCH] Patch to provide maxage and maxsize account options to exclude old/large messages
This is designed to make offlineimap even better for low bandwidth connections.
maxage allows you to specify a number of days and only messages within
that range will be considered by offlineimap for the sync. This can be
useful if you would like to start using offlineimap with a large
existing account and do not want to import large archives of mail.
maxsize allows you to specify the maximum size of a message to consider so
that you can exclude messages with large attachments etc.
In both cases the cachemessagelist function of the folder was modified to ignore
messages that do not meet the criteria. If the criteria are not specified
then the existing code will be executed the same as before. If a message
does not meet the criteria it will be as though this message does not exist
- offlineimap will completely ignore it. It will not have flags updated,
it will not be deleted, it will not be considered at all.
When operating against an IMAP repository a server side search function
is used. This of course requires support for server side search.
I have tested this with either option, no options etc. against IMAP, Maildir
and Gmail. I have run variations of this patch here for the last 3 weeks or
so syncing about 4 accounts normally.
This reverts commit 220db8a77d.
From: Daniel Jacobowitz
Date: July 17, 2009
The documentation may have been unclear, but quick never worked the
way this patch changes it. My installed offlineimap does one sync
every $autorefresh minutes, and the $quick'th one is a full sync. All
the others are quick. Now it's going to do a full sync every
$autorefresh minutes and a ludicrous number of $quick syncs.
-- Daniel Jacobowitz CodeSourcery
Hello John,
The attached patch makes quick synchronization work again (according to
the documentation), so there are <quick> quick synchronizations
performed between full synchronizations.
Thanks,
Michal
* fixes rh bz #510036
Signed-off-by: Christoph Höger <choeger@cs.tu-berlin.de>
[ per jgoerzen: rh bz #510036 is Kerberos issue. also Closes: #535794 in Debian ]
Closes: #535160
Bug#535160: offlineimap fails on encfs (FUSE) due to hard linking
Package: offlineimap
Version: 6.0.3
Severity: normal
Tags: patch
Hi,
if the localrepository is stored on an encfs, offlineimap fails as follows:
OfflineIMAP 6.0.3
Copyright (C) 2002 - 2008 John Goerzen <jgoerzen@complete.org>
This software comes with ABSOLUTELY NO WARRANTY; see the file
COPYING for details. This is free software, and you are welcome
to distribute it under the conditions laid out in COPYING.
***** Processing account pleione
Copying folder structure from IMAP to Maildir
Establishing connection to tunnel:eval `keychain --quiet --eval` && ssh -q mymailhost /usr/sbin/dovecot --exec-mail imap.
Syncing Drafts: IMAP -> Maildir
Syncing INBOX: IMAP -> Maildir
----------8<----------
Syncing net: IMAP -> Maildir
Copy message 360 IMAP[net] -> Maildir[net], LocalStatus[net]
Syncing personal: IMAP -> Maildir
Thread 'Copy message 360 from net' terminated with exception:
Traceback (most recent call last):
File "/var/lib/python-support/python2.4/offlineimap/threadutil.py", line 149, in run
Thread.run(self)
File "threading.py", line 422, in run
self.__target(*self.__args, **self.__kwargs)
File "/var/lib/python-support/python2.4/offlineimap/folder/Base.py", line 282, in copymessageto
newuid = object.savemessage(uid, message, flags, rtime)
File "/var/lib/python-support/python2.4/offlineimap/folder/Maildir.py", line 198, in savemessage
os.path.join(tmpdir, messagename))
OSError: [Errno 1] Operation not permitted
Last 4 debug messages logged for Copy message 360 from net prior to exception:
----------8<----------
As encfs does not support hard linking, the rename of the temporary
message file fails.
This is the only occurrence of hard linking in offlineimap and can be
fixed by using an atomic `os.rename` instead of `os.link`+`os.unlink`.
I have been using the attached patch for more than 1.5 years and have
never again had any problems with offlineimap on encfs.
Regards,
Peter
On Tue, Apr 21, 11:19:00 -0500, John Goerzen wrote:
> I think the one loss of functionality we have here is that it doesn't
> check if a given account has already been listed before adding to the
> list. Should be a simple tweak. If you could tweak that and test, I'd
> apply a new patch.
Good catch. I attach an updated patch which I've tested and it appears
to work fine, including not syncing two accounts twice.
Thanks,
--
Jonny Lamb, UK
jonny@debian.org
From 7f348ee116bba64f7330e28d4e7b2c015910a890 Mon Sep 17 00:00:00 2001
From: Jonny Lamb <jonny@debian.org>
Date: Tue, 05 May 2009 20:45:17 +0100
Subject: [PATCH] Respect order of general.accounts config setting.
This makes the order of account synchronisation the same as the order of
the general.accounts setting by using a list instead of a dict, which
was actually pointless as the value of each dict item was never even
looked at.
Signed-off-by: Jonny Lamb <jonny@debian.org>
Patch from Eric Dorland
Closes: #470875
From: Wouter Verhelst
Subject: kerberos authentication works only the first time
Date: Fri, 14 Mar 2008 09:28:37 +0100
Package: offlineimap
Version: 5.99.8
Severity: normal
Hi,
I have the "autorefresh" configuration option specified in my
.offlineimaprc, and am now using the kerberos authentication.
However, this kerberos authentication seems to work only the first
time
offlineimap tries to fetch mails. The next time, it fails with this
output:
Thread 'Account sync Test' terminated with exception:
Traceback (most recent call last):
File "/var/lib/python-support/python2.4/offlineimap/threadutil.py",
line 153, in run
Thread.run(self)
File "/usr/lib/python2.4/threading.py", line 422, in run
self.__target(*self.__args, **self.__kwargs)
File "/var/lib/python-support/python2.4/offlineimap/accounts.py",
line 119, in syncrunner
self.sync()
File "/var/lib/python-support/python2.4/offlineimap/accounts.py",
line 148, in sync
remoterepos.syncfoldersto(localrepos, [statusrepos])
File
"/var/lib/python-support/python2.4/offlineimap/repository/Base.py",
line 135, in syncfoldersto
srcfolders = src.getfolders()
File
"/var/lib/python-support/python2.4/offlineimap/repository/IMAP.py",
line 192, in getfolders
listresult = imapobj.list(directory =
self.imapserver.reference)[1]
File "/usr/lib/python2.4/imaplib.py", line 469, in list
typ, dat = self._simple_command(name, directory, pattern)
File "/usr/lib/python2.4/imaplib.py", line 1028, in _simple_command
return self._command_complete(name, self._command(name, *args))
File "/usr/lib/python2.4/imaplib.py", line 787, in _command
raise self.error(
error: command LIST illegal in state NONAUTH
Paul Hinze <paul.t.hinze@gmail.com> on 2008-12-22 at 19:16:
> I did a bit of debugging and asking around in #python and it turns out
> that because Maildir.py uses a conditional import of md5 from either
> hashlib or the md5 module, the md5.new() call is not always correct.
> The attached patch should fix this problem.
Thanks to Daniel Rall for pointing out that the attachment got stripped
off my last message. Patch follows.
Paul
----
From e01fdfbf62c61c31b514e826e6cc00fb98d88808 Mon Sep 17 00:00:00 2001
From: Paul Hinze <paul.t.hinze@gmail.com>
Date: Mon, 22 Dec 2008 18:42:44 -0600
Subject: [PATCH] Fixing md5 import when hashlib is available
Thanks to habnabit and Rhamphoryncus in #python for help debugging
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.
From Jim Pryor
The first, "cleanup.patch", cleans up a few spots that tend to throw
exceptions for me as offlineimap is exiting from a KeyboardInterrupt.
Frankly, the original code doesn't even make much sense, and
moreover it's not forward compatible with python 2.6, and
furthermore:
DeprecationWarning: socket.ssl() is deprecated.
So, this commit is just a temporary fix.
Signed-off-by: Michael Witten <mfwitten@mit.edu>
module threading should be taken out back and shot.
Condition.wait() is a busywait loop that has negative implications for
battery consumption on laptops.
Queue.get() in blocking mode blocks SIGINT from being delivered.
Argh, argh, argh.
Closes: #493801.
This should improve power-management abilities some more
The catch is that we can't wait any longer for the kathread to
terminate. We were waiting for this in some cases. This is probably
not a big deal.
fixes deb#434074
fixes#66
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>
Noted thie code:
statusfolder =
statusrepos.getfolder(remotefolder.getvisiblename().\
replace(remoterepos.getsep(),
statusrepos.getsep()))
in accounts.py. Should have been using the sep of the LocalStatus all
along.
refs deb#479798, #68
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.)
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.
* 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:
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=10;filename=support-GSSAPI-via-pykerberos.diff;att=1;bug=359213
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
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.
This reverts commit 71a76d9a61.
Zak Smith reported a problem at:
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
Conflicts:
offlineimap/folder/IMAP.py
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!
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:
21:19.04 > DCKF8 UID STORE 66050,50613,52164,40043,40055,25874 +FLAGS
(\Deleted)
21:19.36 < * 35 FETCH (FLAGS (\Seen \Deleted) UID 25874)
21:19.36 < * 321 FETCH (FLAGS (\Seen \Deleted))
21:19.57 < * 322 FETCH (FLAGS (\Seen \Deleted))
21:19.57 < * 560 FETCH (FLAGS (\Seen \Deleted))
21:19.57 < * 581 FETCH (FLAGS (\Seen \Deleted) UID 52164)
21:19.62 < * 1022 FETCH (FLAGS (\Seen \Deleted))
21:19.62 < DCKF8 OK STORE completed.
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.
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.
This patch maneuvers around python imaplib's mysterious read-only detection
algorithm and correctly calls the UI's deletetoreadonly(), when trying to
delete/expunge in a mailbox without having the necessary rights.
This involves several changes at different places:
- syncfoldersto() takes statusfolder as an argument, and returns the
list of new folders and the list of folders that should be ingnored,
typically those that were deleted. Warns the user about folders that
are present only on one side and are not synced.
- syncfoldersto() is called both ways, and on folder creation
forgetfolders() is used to rebuild the list and take the new creation
into account. Probably not the most efficient, since it involves
talking to the IMAP server again, but it will rarely be used anyway.
- Locally created folders are treated separately in the synchronization,
namely the local messages are uploaded and then the normal sync still
occurs. If the same folder is created on both sides and contains
messages on both sides, a two-way sync occurs.
fixes deb#439384
From: martin f krafft
Subject: race condition in Maildir writing
The offlineimap Maildir code checks for file existence and then
opens a file. That's open to a race condition. It's better to open
the file and fail if it already exists. The following patch does
this. It catches OSError 17 (file exists) and re-raises all others.
I'll leave it up to you to decide whether this is appropriate.
This involves several changes at different places:
- syncfoldersto() takes statusfolder as an argument, and returns the
list of new folders and the list of folders that should be ingnored,
typically those that were deleted. Warns the user about folders that
are present only on one side and are not synced.
- syncfoldersto() is called both ways, and on folder creation
forgetfolders() is used to rebuild the list and take the new creation
into account. Probably not the most efficient, since it involves
talking to the IMAP server again, but it will rarely be used anyway.
- Locally created folders are treated separately in the synchronization,
namely the local messages are uploaded and then the normal sync still
occurs. If the same folder is created on both sides and contains
messages on both sides, a two-way sync occurs.
From: "Mark A. Hershberger"
https://bugs.launchpad.net/ubuntu/+source/offlineimap/+bug/96710
the locked() method isn't implemented for non-interactive UIs, so
exceptions are thrown on cron jobs. Ubuntu's new apport catches these
and ? well, you get the idea.
patch provided.
fixes deb#433732
Date: Sun, 30 Sep 2007 13:54:56 -0400
From: Daniel Jacobowitz <drow@false.org>
To: offlineimap@complete.org
Subject: Assorted patches
Here's the result of a lazy Sunday hacking on offlineimap. Sorry for
not breaking this into multiple patches. They're mostly logically
independent so just ask if that would make a difference.
First, a new -q (quick) option. The quick option means to only update
folders that seem to have had significant changes. For Maildir, any
change to any message UID or flags is significant, because checking
the flags doesn't add a significant cost. For IMAP, only a change to
the total number of messages or a change in the UID of the most recent
message is significant. This should catch everything except for
flags changes.
The difference in bandwidth is astonishing: a quick sync takes 80K
instead of 5.3MB, and 28 seconds instead of 90.
There's a configuration variable that lets you say every tenth sync
should update flags, but let all the intervening ones be lighter.
Second, a fix to the UID validity problems many people have been
reporting with Courier. As discussed in Debian bug #433732, I changed
the UID validity check to use SELECT unless the server complains that
the folder is read-only. This avoids the Courier bug (see the Debian
log for more details). This won't fix existing validity errors, you
need to remove the local status and validity files by hand and resync.
Third, some speedups in Maildir checking. It's still pretty slow
due to a combination of poor performance in os.listdir (never reads
more than 4K of directory entries at a time) and some semaphore that
leads to lots of futex wake operations, but at least this saves
20% or so of the CPU time running offlineimap on a single folder:
Time with quick refresh and md5 in loop: 4.75s user 0.46s system 12%
cpu 41.751 total
Time with quick refresh and md5 out of loop: 4.38s user 0.50s system
14% cpu 34.799 total
Time using string compare to check folder: 4.11s user 0.47s system 13%
cpu 34.788 total
And fourth, some display fixes for Curses.Blinkenlights. I made
warnings more visible, made the new quick sync message cyan, and
made all not explicitly colored messages grey. That last one was
really bugging me. Any time OfflineIMAP printed a warning in
this UI, it had even odds of coming out black on black!
Anyway, I hope these are useful. I'm happy to revise them if you see
a problem.
--
Daniel Jacobowitz
CodeSourcery
patch from Mike Gerber
Two times today I have found my offlineimap to have died with this same
situation. It appears as if certain types of messages (both spam in my
situation), cause offlineimap to choke. When it does it cannot proceed.
This means that when I run offlineimap, it pulls in messages from some
folders, then it hits the folder with the bad message and dies, leaving
undownloaded mail on the server. The only fix to this problem is to find
the problem message on the server and remove it by hand. This isn't such
a huge deal for me, since I run the server, but other people have to
come to me to ask me to delete these messages, and until I do they
cannot download their email.
I have captured the output by running script during one of these
incidents, this has been attached. Additionally, I have also attach the
problematic message.
The patch seems to work for me, might need some Python wizard and better
testing, though.
fixes deb#396443
r[1] is a list. In case it contains more than one 'str' they are concatenated
using '. '. In processmessagesflags the join is tested, for savemessagesflags I
assume that it is also needed.
I have tested this and Dovecot no longer beats offlineimap
to the punch. (-:
I achieved that by keeping the renames in tmp/ until it finally does
one last rename in new/ or cur/.
fsync the Maildir file, its final directory when writing a new message.
fsync the localstatus file and its final directory when writing the
local status cache.
This should reduce duplication in the event of hardware trouble.
fixes#8
see thread at http://lists.complete.org/offlineimap@complete.org/2007/03/threads.html.gz
* Reduced the number of parameters passed to ui.validityproblem() because they were all just method-calls to the folder object, which is already passed as the first parameter (reduction of unnecessary complexity).
* Improved the diagnostic message for an 'UID validity problem' by including the name of the repository in which the folder resides; previously it was not possible to determine from the diagnostic alone on which side the problem was.
* Reduced the number of parameters passed to ui.validityproblem() because they were all just method-calls to the folder object, which is already passed as the first parameter (reduction of unnecessary complexity).
From: Peter Colberg
Hello,
using offlineimap with the preauthtunnel option to start a remote
IMAP daemon via ssh, a zombie process is left behind during the
autorefresh sleep period if not holding the connection open.
Above behaviour is a result of using os.popen2 to spawn the tunnel
process, which makes it impossible waiting for the child process
to terminate when shutting down the tunnel.
The patch included below fixes the issue by employing the Popen
class from the subprocess module, which seems to be the preferred
way to spawn processes and connect to their pipes in any case (at
least since python version 2.4.4, which fixes a memory leak in the
subprocess module).
Regards,
Peter
fixes deb#410730
From: Mark Brown <broonie@sirena.org.uk>
Currently offlineimap will attempt to connect to the first address
returned by addrinfo() for the remote system and will fail if that fails
even if another result would have worked. This is particularly common
when the remote system supports both IPv4 and IPv6 - a laptop may in
some environments have no routable IPv6 connectivity so if the IPv6
address is returned first the connect will fail even though IPv4 would
have worked.
This is actually a bug in imaplib, a copy of which is included in
offlineimap. This patch fixes the problem by looping over all the
results returned by getaddrinfo(). Unfortunately it mangles the error
reporting slightly since I couldn't work out how to raise an appropriate
exception, though given that that that was a Python backtrace there was
work to do there anyway.
Note that I have only tested the SSL case.
It looks like I accidentally recorded the wrong version of Curses.py --
originally this code was there, but I moved it over to UIBase so it would
cover the TTY UI also.
From Ben Kibbey
hello,
Attached is a patch to enable evaluation of account credentials with the
remotehosteval, remoteusereval and remotepasseval configuration options.
I needed this because rather than change all my other programs
configuration settings when I change, say a password, I store them in a
file. So I call a function in pythonfile which parses the credential
file and returns the wanted info. Not really very well tested, but not
complex either. Offlineimap is great, thanks.
From: Ben Kibbey
Subject: Re: Removed restoratime from OfflineIMAP
On Wed, May 03, 2006 at 10:08:35PM -0500, John Goerzen wrote:
> Hi Ben,
>
> Thanks for your restoreatime patch.
>
> However, I have received this bug report:
>
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=365933
>
> After looking at the problem, here's what's going on.
>
> The person is using IMAP as the local repository as well.
>
> You really need to move the atime save and restore code from accounts.py
> into the repository/Maildir.py. Then, for any new call you add to the
> Maildir repository (that will be called from outside Maildir.py), you
> need to add a corresponding default function to repository/Base.py, and
> also make sure that on folders (such as IMAP) where atime restoration
> makes no sense, no error is generated.
>
> Let me know if that doesn't make sense to you. If you get it fixed, I'd
> be happy to re-apply it to a future version of OfflineIMAP.
>
> -- John Goerzen
>
Attached is a new diff that should work though not really tested
(v4.0.14). In repository/Base.py restore_atime() will call
self.restore_folder_atimes() only if the folder type is Maildir. Let me
know if it has any more problems.
The attached patch adds syncing the INTERNALDATE of IMAP folders with
the mtime of messages in maildir folders.
I want this to happen, because I'm running a dovecot over the maildirs
synced by offlineimap, and that uses the mtime as the INTERNALDATE.
When using mutt to view messages I generally sort based on the received
date, which for IMAP folders is the INTERNALDATE.
Since this is the first real coding I've done in Python the patch may
need to be cleaned up some, but it's working pretty well for me. I've
added new messages to each side, and the received date has been
preserved going both ways.
From: Ben Kibbey <bjk@luxsci.net>
Attached is a patch to restore the atime of Maildir folders after
syncing. It can be enabled via the 'restoreatime' boolean in the
configuration file. I needed this because offlineimap is run after a
fetchmail and my mail checker breaks.
Patch from Nikita V. Youshchenko
From: "Nikita V. Youshchenko"
To: Debian Bug Tracking System
Subject: offlineimap: exception on mail with broken headers (+fix)
Date: Wed, 24 Aug 2005 13:41:08 +0400
Package: offlineimap
Version: 4.0.10
Severity: normal
Tags: patch
Recently I've got an exception (see below) while using offlineimap.
Exception was probably caused by invalid Date header of (likely spam)
message:
Date: Sat, 20 Aug 2005 4294967295:43:18 -0700
From: "Nikita V. Youshchenko"
I trued to use offlineimap and found that while being quite fast on
small folders, it takes up to several minutes (of 100% busy CPU and
almost no network traffic) to sync a folder with 2000+ messages.
While looking into the code, I found why this happens.
In folder/Base.py, in method BaseFolder.syncmessagesto_copy(),
dest.getmessagelist() is called inside a loop, while being a loop
invariant. Similar thing happens in BaseFolder.syncmessagesto_delete()
for self.getmessagelist().
This causes quadratic complexity over folder size.
Moving these calls out of loops make large folder sync fast (several
seconds instead of several minutes for folder with 2000 messages on
700MHz P3).
