search

kvspb / nginx-auth-ldap

LDAP authentication module for nginx
BSD 2-Clause "Simplified" License
735 stars 252 forks source link

handle NULL search result for group dn #195

Closed gouzhuang closed 5 years ago

gouzhuang commented 6 years ago

The LDAP server could return NULL for dn when there was no match, in this case the original code would act as if there was a match.

davama commented 6 years ago

I see that it's been sitting since 12/2017 but if it helps, i've tested this and works as intended

$ slapd -V
@(#) $OpenLDAP: slapd 2.4.44 (May 16 2018 09:55:53) $
    mockbuild@c1bm.rdu2.centos.org:/builddir/build/BUILD/openldap-2.4.44/openldap-2.4.44/servers/slapd

Thanks for providing this @gouzhuang

Roemer commented 6 years ago

Any news on that PR?

landryb commented 5 years ago

I've also tested it (against an openldap server, with nginx 1.16.0) and it solves #194 for me, which is quite awkward when you expect users to get denied while they're silently allowed access....

Looked at the logic of the code, and the fix makes sense to me. Maybe the check against NULL could be completely avoided, as it seems the outcome only relies on the return code (ie LDAP_SUCCESS or LDAP_NO_RESULTS_RETURNED) and doesnt even look at the returned values. But that would require much more interop testing....