Re: [exim] SMTP AUTH via LDAP

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Autor: Alexander A. Kapralov
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CC: exim-users
Assumpte: Re: [exim] SMTP AUTH via LDAP

> Hello all,
>
> LDAP makes me feel really stupid.
>
> With that out of the way, perhaps you can forgive what's likely
> an obvious question. I hate to raise it here for that reason, but
> my forehead is bleeding from the numerous collisions it has had
> with the brick wall the last two days.
>
> Here is the recipe I'm trying to get to work:
>
> LDAPCFG = user=cn=Manager,dc=blah,dc=com pass=xxxxxxx connect=5
>
> plain:
>    driver = plaintext 
>    public_name = PLAIN
>    server_prompts = :
>     server_condition = ${if ldapauth \
>      {user=${lookup ldapdn \
>      {LDAPCFG ldap:///ou=Employees,dc=blah,dc=com?dn?sub?(uid=$2)}} \
>      pass=$3 connect=5 ldap:///} {true} {fail}}
>    server_set_id = $2

>
> The problem here is that the DN's in this directory include
> CN's, which have spaces. My DN, for instance, would be:
>
>    cn=Chris Bellomy,ou=Employees,dc=blah,dc=com

>
> This causes exim to barf thusly:
>
>    2007-01-17 15:37:51 plain authenticator failed for
>    adsl-209-30-181-167.dsl.rcsntx.swbell.net ([192.168.0.7]) [209.30.181.167]:
>    435 Unable to authenticate at present (set_id=cbellomy): unknown parameter
>    "Bellomy,ou=" precedes LDAP URL

>
> I keep thinking that quote_ldap_dn, properly placed, will solve
> this, but I just can't figure out the right iteration for that
> (if in fact quote_ldap_dn is the right function here).
>
> So, problem one: submitting the DN with the space accounted for
> such that the above error is eliminated.
>
> Problem two, if it can be solved, is that I'd prefer to do the
> search with an anonymous bind, and the authentication with the
> authenticated bind (of course). As far as I can tell, though,
> one can never do anonymous binds from exim. Am I right?
>
> Thanks in advance for any and all pointers,
>
> cb
>

if "uid" contain email address or login. try this.

plain:
    driver = plaintext
    public_name = PLAIN
    server_prompts = :
    server_condition = ${if ldapauth \     
{user="uid=${quote:$2},ou=Employees,dc=blah,dc=com" \
    pass=${quote:$3} \
    ldap:///ou=Employees,dc=blah,dc=com/}{yes}{no}}    
    server_set_id = $2