masarati@aero.polimi.it wrote:

...

Full_Name: Jiri Giesl Version: 2.3.43 OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (212.111.5.220)

We tried to estalish connection to LDAP server by our own (because of proxy usage) and then use "ldap_open_internal_connection" function to initialize internal structures of openldap. After successful SASL binding we realized that the connection to LDAP server has been closed. We found out that there is checking for reference count in "wait4msg" function (result.c file) this way:

if ( lc->lconn_refcnt<= 1 )

During classic initialization and SASL binding we get 2 references, however when using "ldap_open_internal_connection" and SASL binding we get only 1 reference.

We realized that in "ldap_open_defconn" (function which is called for establishing of a new connection) there is reference counter which is increased this way:

++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */

When we added this incrementation also into "ldap_open_internal_connection" (open.c file), everything goes well (it is obvious).

Are we wrong or this is really minor bug (missing incrementation of reference counter in "ldap_open_internal_connection")?

Your comment sounds fine; however, it's hard to judge: that code is essentially untouched since 2000 (Mark Adamson) and it is not (or no longer) used elsewhere in OpenLDAP code. I'd vote for adding a

 ++ld->ld_defconn->lconn_refcnt;

here as well, unless someone else has valid objections.

I'd say they should rewrite their code to use ldap_init_fd() instead; since open_internal_connection does not provide a URL some SASL mechanisms would fail because they don't know the remote hostname.

But yeah, probably adding the refcnt is OK.