Am Donnerstag, 12. Juni 2014, 11:53:26 schrieb Christoph Bußenius:
Hi,
I think I found a bug in Dovecot 2.1.17 and 2.2.13.
In our setup, sometimes ACLs stop working because dovecot-acl-list is
replaced by an empty file. We found that lazy_expunge is connected to
this.
To reproduce, create ACLs for user1 in a folder. Put a mail in that
folder and expunge it, so that the folder will be created in the
expunged namespace.
For instance,
# cat user1/mail/mailboxes/folder/dbox-Mails/dovecot-acl
user=user2 keilrwts
# cat user1/mail/dovecot-acl-list
1350914868 folder
# doveadm -f user1w fetch -u user1 'guid' mailbox _EXPUNGED.\*
# ls -l user1/mail/dovecot-acl-list
-rw--- 1 vmail vmail 0 2014-06-12 11:40 user1/mail/dovecot-acl-list
You see that we have used doveadm to list the expunged namespace, which
has emptied the dovecot-acl-list file.
Hi,
tried it with dovecot-ee-2.1.17.7-1.el6 and can confirm exactly the
behaviour!
Interestingly a doveadm acl debug recreates dovecot-acl-list:
doveadm acl debug -u user2 user/user1/Folder
...
doveadm(user2): Info: User user2 has rights: ...
doveadm(user2): Error: Mailbox not found from dovecot-acl-list, rebuilding
doveadm(user2): Info: User user1 found from ACL shared dict
doveadm(user2): Info: Retrying after rebuilds:
...
A question because you mention 2.2.13, is acl + lazy_expunge working for you
with 2.2.13???
2.2.13 fails for me completely with unknown namespace .EXPUNGED as soon as a
user shares a folder. (as long as nothing is shared everything is file)
Reproducible with: doveadm acl set -u user1 Folder user=user2 rights...
2.1.17: doveadm acl debug -u user2 user/user1/Folder everything is fine.
2.2.13: unknown namespace .EXPUNGED, user2 cannot login anymore.
Unfortunately I never got any feedback to this issue and therefore stick
with 2.1.17 :-(
Florian
Cheers,
Christoph
# 2.2.13: /usr/local/dovecot/etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-57-server x86_64 Ubuntu 10.04.4 LTS
disable_plaintext_auth = no
mail_gid = vmail
mail_location = mdbox:~/mail
mail_plugins = acl
mail_uid = vmail
namespace {
inbox = no
list = children
location = mdbox:%%h/mail
prefix = INBOX.shared.%%u.
separator = .
subscriptions = no
type = shared
}
namespace default {
inbox = yes
location =
prefix = INBOX.
separator = .
type = private
}
namespace expunged {
hidden = yes
list = no
location =
mdbox:~/mail:MAILBOXDIR=expunged:SUBSCRIPTIONS=expunged-subscriptions
prefix = _EXPUNGED.
separator = .
subscriptions = yes
}
passdb {
args = scheme=CRYPT username_format=%u
/usr/local/dovecot/etc/dovecot/users
driver = passwd-file
}
plugin {
acl = vfile
acl_shared_dict = file:/mail/shared-mailboxes
lazy_expunge = _EXPUNGED.
}
protocols = imap pop3
service auth {
unix_listener auth-userdb {
group = vmail
mode = 0660
}
}
ssl_cert = /etc/ssl/certs/dovecot.pem
ssl_key = /etc/ssl/private/dovecot.pem
userdb {
args = /usr/local/dovecot/etc/dovecot/users
driver = passwd-file
}
protocol imap {
imap_client_workarounds = tb-extra-mailbox-sep
mail_max_userip_connections = 20
mail_plugins = acl imap_acl acl
}
--
Florian Tischler
System Administrator
*Johann Radon Institute for Computational and Applied Mathematics (RICAM)
http://www.ricam.oeaw.ac.at/
florian.tisch...@oeaw.ac.at
*Industrial Mathematics Institute
http://www.indmath.uni-linz.ac.at/
tisch...@indmath.uni-linz.ac.at
http://www.ricam.oeaw.ac.at/people/page.cgi?firstn=Florian;lastn=Tischler
GPG-Key: http://www.ricam.oeaw.ac.at/gpg/florian_tischler.asc
tel: +43 732 2468 5250
fax: +43 732 2468 5212
