Lua Auth

[Mark Moseley]

On Thu, Dec 21, 2017 at 9:51 PM, Aki Tuomi <aki.tuomi at dovecot.fi> wrote:

>
> > On December 22, 2017 at 6:43 AM Mark Moseley <moseleymark at gmail.com>
> wrote:
> >
> >
> > >
> > >
> > >
> > >
> > > 2) Is there an appropriate way to return data with spaces in it (or
> > > presumably other non-alphanum chars. My quota name had a space in it,
> > > which
> > > somehow got interpreted as 'yes' , i.e.:
> > >
> > > imap: Error: Failed to initialize quota: Invalid quota root quota:
> Unknown
> > > quota backend: yes
> > >
> > > I simply changed the space to an underscore as a workaround, but I'm
> > > curious if there's a better way. I tried various quoting without
> success.
> > > Didn't try escaping yet.
> > >
> > >
> > > 2) Instead of string, return a key value table. you can have spaces in
> > > values.
> > >
> > >
> > >
> > Does this work for auth_passdb_lookup too, or just auth_userdb_lookup?
> I've
> > been returning a table with auth_userdb_lookup just fine. But when I try
> > using it with passdb (and despite being very very sure that a 'password'
> > key exists in the table I'm returning from auth_passdb_lookup() -- I'm
> > logging it one line above the return), the passdb auth fails with this
> log
> > entry:
> >
> > Dec 21 23:29:22 auth-worker(7779): Info:
> > lua(test1 at test.com,10.20.103.32,<dSvLQuZg+uIKFGcg>):
> > No password returned (and no nopassword)
> >
> > I guess it's not seeing the password key in the table I'm returning. If I
> > return a concat'd string ("password=... user=...") from
> > auth_passdb_lookup(), it works just fine.
> >
> > I was also curious if there's a way to pass info between
> auth_userdb_lookup
> > and auth_passdb_lookup. I was trying to use a table with
> > auth_passdb_lookup() so I could take advantage of prefetch and thought
> that
> > if auth_passdb_lookup didn't take a table, I could stash data away and
> then
> > un-stash it in auth_userdb_lookup
> >
> > Thanks!
> >
> >
>
> Yeah, this is a bug we have fixed =)
>
> https://github.com/dovecot/core/commit/c86575ac9776d0995355d03719c82e
> 7ceac802e6#diff-83374eeaee91d90e848390ba3c7b264a
>
>

I'm on rc1, so I appear to already have that git commit (as part of rc1).

# /usr/sbin/dovecot  --version
2.3.0.rc1 (12aba5948)

For testing this, I tried replacing my passdb lookup with this:

function auth_passdb_lookup(req)
        passdb_table = {}
        passdb_table[ 'password' ] = 'test'
        passdb_table[ 'user' ] = 'test1 at test.com'

        return dovecot.auth.PASSDB_RESULT_OK, passdb_table
end

and still get:

Dec 22 01:17:17 auth-worker(9711): Info:
lua(test1 at test.com,10.20.103.32,<f2O5xOdgFoYKFGcg>):
No password returned (and no nopassword)

Replacing that return statement with this:

return dovecot.auth.PASSDB_RESULT_OK, 'password=test user=test1 at test.com'

authenticates successfully.