[Dovecot] Annoying "feature" in dovecot/pidgeonhole - include depth limitation

[Stephan Bosch]

On 9/10/2011 4:36 AM, Mihai Moldovan wrote:
> Hi all,
>
> I'm using dovecot 2.0.14 build on Debian.
>
> The maintainers obviously patch the dovecot source so that it uses the
> pidgeonhole sieve system.
>
> Today I ran into a very annoying issue: I created several sieve scripts
> and interlinked via the include command, only to find dovecot spewing
> this error message at me:
> SWREG Newsletter: line 14: error: cannot nest includes deeper than 10
> levels.
>
> As far as I could see this limitation is hardcoded to a depth of 10 and
> can only be changed at compile time.

Yes, it is.

> Why is it in place? I understand that you CAN create loops via the
> include command and limiting the inclusion depth is a way to circumvent
> loops - but ten is a very low value and the fact that you can't change
> it via a config file or sorta is even worse.

True. This is one of those typical 'this aught to be enough for every 
one' issues.  Up until now, this was true :)

> My "fix" so far has been ignoring this, i.e. not returning false. I'm
> pretty sure that's not the best way to do it but it seems to be working
> so far.
>
> I'd really like to hear your opinion on this issue.

I've made the limits for the include extension configurable now. This 
will be included in the next release.

Regards,

Stephan.