Re: NEW: chasing referrals

[Roland S. <rol...@ep...>]

Hi,

Chris Ridd wrote:

> > (We are using Net::LDAP 0.22 and OpenLDAP 1.2.11)
> > It seems that my configuration doesn't return any referrals. I have
> > configured two servers, one holding o=epigenomics, the other on
> > c=us,o=epigenomics. Via PHP and ldapsearch tools, the inserted referrals
> > even seem to transparently redirect the client to the second server when
> > accessing/searching the c=us,epigenomics substructure. But with my
> > Net::LDAP code:

> You are binding using LDAPv2. LDAPv2 did not have referrals.
> 
> Some vendors have 'patched in' some support for referrals in LDAPv2, but
> this is completely non-standard and not supported by Net::LDAP.
> 
> Try binding with LDAPv3 instead and see what you get. Hint: pass version =>
> 3 in the bind call.

I already tried that:
-----
$ldap = Net::LDAP->new("wilson");
$ldap->bind(version => 3);
print "LDAP Version: ",$ldap->version,"\n";
$mesg = $ldap->search( base => "o=epigenomics",
                       filter => '(cn=*)',
                       deref => 3,
                     );

@referrals = $mesg->referrals;
foreach $ref (@referrals) {
  print "Referral: ",$ref,"\n";
}

print "Return code: ",$mesg->code,"\n";
print "Error message: \"",$mesg->error,"\"\n";

$n = $mesg->all_entries;
print "Number of Entries: ".$n."\n";

foreach $entry ($mesg->entries) {
  print "dn: ",$entry->dn,"\n";
}
----- 

but got the same result:
-----
LDAP Version: 3
Return code: 9
Error message: "Referral:
ldap://deledda/c=gdr,o=epigenomics
ldap://deledda/c=us,o=epigenomics"
Number of Entries: 2
dn: cn=admin,o=epigenomics
dn: cn=updated,o=epigenomics
-----

Even with LDAPv3, I get the same result. "Real" referrals seem to be
suppressed (in the array). Instead, the error message (!) contains the
referral. As you see, I added a referral. So even multiple referrals are
displayed in the error message.

Is this the desired behavior of Net::LDAP? I don't like the idea to
parse error strings instead of being able to use the native referrals in
$mesg->referrals.

Thanks in advance.

bye,

-- 
Roland Stigge
 
Epigenomics AG                              Kastanienallee 24
www.epigenomics.com                              10435 Berlin