namespace directives from userdb not being applied

[Aki Tuomi]

> On 14/07/2022 04:56 EEST Brendan Braybrook <brendan at tucows.com> wrote:
> 
>  
> hi all,
> 
> i'm having a strange issue. i have a few dovecot instances running:
> 
> 1- debian 10 with debian's dovecot-core 1:2.3.4.1-5+deb10u5
> 2- debian 10 with debian's dovecot-core 1:2.3.4.1-5+deb10u6
> 3- debian 11 with dovecot's dovecot-core 2:2.3.19.1-2+debian11
> 
> for all these, i've just been testing with a static userdb (ignore if
> the login user was different; they all had the same userdb data..
> various different passdb configs were tried (none do any userdb
> prefetching):
> 
> userdb {
>   driver = static
>   args =
> mail=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> home=/mail/mailstore03/492/177/b at b.com/ namespace=inbox,share
> namespace/inbox/separator=/ namespace/share/separator=/
> namespace/share/prefix=boop/
> }
> 
> instance #2 and #3 don't seem to pass all the namespace directives i'm
> passing through to the imap process.
> 
> (i originally found it happening with a lua userdb script then noticed
> it with a dict userdb, but the simpler static userdb still shows it
> happening so i don't think it's related to the different userdb
> mechanisms themselves)
> 
> debug looks like:
> 
> auth: Debug: master userdb out: USER	3466461185	b at b.com
> mail=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> home=/mail/mailstore03/492/177/b at b.com/	namespace=inbox,share
> namespace/inbox/separator=/	namespace/share/separator=/
> namespace/share/prefix=boop/	auth_mech=PLAIN
> auth_token=bcdb366d56f4fceee83775a1b28ca89ccdf881fd
> script-login(b at b.com)<56895><>: Debug: Added userdb setting:
> mail=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> script-login(b at b.com)<56895><>: Debug: Added userdb setting:
> namespace=inbox,share
> script-login(b at b.com)<56895><>: Debug: Added userdb setting:
> namespace/inbox/separator=/
> script-login(b at b.com)<56895><>: Debug: Added userdb setting:
> namespace/share/prefix=boop/
> script-login(b at b.com)<56895><>: Debug: Added userdb setting:
> namespace/share/separator=/
> imap(b at b.com)<56894><9mFyornjaMcKyAUI>: Debug: Added userdb setting:
> mail=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> imap(b at b.com)<56894><9mFyornjaMcKyAUI>: Debug: Added userdb setting:
> namespace=inbox,share
> imap(b at b.com)<56894><9mFyornjaMcKyAUI>: Debug: Namespace inbox:
> type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes,
> subscriptions=yes
> location=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> imap(b at b.com)<56894><9mFyornjaMcKyAUI>: Debug: Namespace : type=private,
> prefix=, sep=, inbox=no, hidden=no, list=yes, subscriptions=yes
> location=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> 
> the script-login task notes that these userdb settings are being added:
> namespace=inbox,share
> namespace/inbox/separator=/
> namespace/share/prefix=boop/
> namespace/share/separator=/
> 
> but the imap task only notes one:
> namespace=inbox,share
> 
> both of these two instances end up getting an error because the imap
> task didn't pick up the prefix:
> Error: namespace configuration error: Duplicate namespace prefix: ""
> 
> instance #1 behaves differently. it's script-login task debug is the
> same, but the imap debug notes:
> imap(bigip-imap at nagios.tucows.com)<2146><s3ctO7njd6cKBS39>: Debug: Added
> userdb setting:
> mail=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> imap(bigip-imap at nagios.tucows.com)<2146><s3ctO7njd6cKBS39>: Debug: Added
> userdb setting: namespace=inbox,share
> imap(bigip-imap at nagios.tucows.com)<2146><s3ctO7njd6cKBS39>: Debug: Added
> userdb setting: namespace/inbox/separator=/
> imap(bigip-imap at nagios.tucows.com)<2146><s3ctO7njd6cKBS39>: Debug:
> tc_empty_notify_plugin init
> imap(bigip-imap at nagios.tucows.com)<2146><s3ctO7njd6cKBS39>: Debug:
> Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no,
> list=yes, subscriptions=yes
> location=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> imap(bigip-imap at nagios.tucows.com)<2146><s3ctO7njd6cKBS39>: Debug:
> Namespace : type=private, prefix=, sep=, inbox=no, hidden=no, list=yes,
> subscriptions=yes
> location=maildir:/mail/mailstore03/492/177/b at b.com/:INDEX=/mail/index03/492/177/b at b.com/
> 
> on this one, the imap task notes that it added ALL the namespace
> directives, and consequently doesn't have any namespace prefix collisions.
> 
> the difference between 1:2.3.4.1-5+deb10u5 and 1:2.3.4.1-5+deb10u6
> doesn't seem that great, and the bug tracker for it doesn't indicate
> anything around userdb would be patched
> (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970386)
> 
> but the problem still seems to exist in 2.3.19 - can anyone else see the
> same thing happening with the current builds?
> 
> thanks!
> -brendan

Hi!

Can you also provide doveconf -n? You are missing location for namespace/share the least, so it ends up in same location...

Other than that, this config seems to work for me at least, with my simple config.

Aki