[kmail2] [Bug 323184] New: LDAP Search w/GSSAPI yields 'Unknown API Error'

[Paul Sobey]

https://bugs.kde.org/show_bug.cgi?id=323184

            Bug ID: 323184
           Summary: LDAP Search w/GSSAPI yields 'Unknown API Error'
    Classification: Unclassified
           Product: kmail2
           Version: 4.10.5
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: composer
          Assignee: kdepim-bugs at kde.org
          Reporter: buddha at the-annexe.net

When searching a Microsoft Active Directory (v. 2008) for addresses using
kerberos/sasl bindings, any searches yield 'unknown api error'. I have good
kerberos credentials on the machine, and other kerberised ldap elements of the
stack (nslcd/ldapsearch) work.

Reproducible: Always

Steps to Reproduce:
1. Configure LDAP address source with GSSAPI/SASL bindings via
kaddressbook/settings/ldap server settings
2. From new email dialogue in kmail, select new recipient, 'search directory
service', enter any name
3.
Actual Results:  
Search gives an error. Full text (redacted as best I can):

LDAP server returned the error: Unknown API error 
Additional info: 
The LDAP URL was:
ldap://ldap.server:389DC=foo,DC=bar,DC=com??sub?%28%26%28%7C%28objectclass%3Dperson%29%28objectclass%3Dgroupofnames%29%28mail%3D%2A%29%29%28%7C%28cn%3D%2Asearchterm%2A%29%28sn%3D%2Asearchterm%2A%29%29%29?!bindname,x-mech=GSS-SPNEGO,x-sasl

Expected Results:  
LDAP search showing results with the name 'searchterm'

This works at home on my openldap server, leading me to believe it's an ldap
service interop issue.

Are there steps I can take to debug this? I'm not familiar with C++ but I have
good knowledge of the linux stack from a sysadmin perspective.

Note that this used to work on an older KDE (until 4.8 from memory) - I recall
that the ldap subsystem was reworked around that time.

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