New subject: Client App and STARTLS auth

10 Jun 2011

      Hi Rich,
to provide a better vision, I am trying to use openldap to connect to a server
and ignoring errors in authentication of the certificates. I am working on a
*client*.
In particular the code I wrote is like this:
ldap_initialize(&ld, url);
if(crypto_api == LDAP_CRYPTO_API_OPENSSL)
   {
     // This Works..
     SSL_CTX *ctx = NULL;
...
   }
   else
   {
     int opt_val = 0;
if(ldap_set_option(ld, LDAP_OPT_X_TLS_NEWCTX, &opt_val) != LDAP_OPT_SUCCESS)
     {
       /// ERROR if here (does not happen)
     }
// This works till now
opt_val = LDAP_OPT_X_TLS_TRY;
     if(ldap_set_option(ld, LDAP_OPT_X_TLS_REQUIRE_CERT, &opt_val) !=
         LDAP_OPT_SUCCESS)
     {
       if(ldap_set_option(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT, &opt_val) !=
         LDAP_OPT_SUCCESS)
       {
         // Error
         ..
       }
     }
m_error = ldap_start_tls_s(corePnt->m_ldap, NULL, NULL);
...
Note that m_error gets a -11...
On the server the output (-d 1) is:
connection_get(14): got connid=1007
connection_read(14): checking for input on id=1007
TLS: error: accept - force handshake failure: errno 11 - moznss error -5938
TLS: can't accept: (unknown).
I have no clue why this is not working.
Another thing which is interesting.. on Ubuntu I tried to change the TLS_CERTREQ
option to "allow" ... and the code works - but I can not have it working by
using the ldap_set_option().. (on Fedora 14/15 setting the option in the
ldap.conf file - in /etc/openldap/ - does not work..).
Heeeeeellp!!! :D
Cheers,
Max
On 06/10/2011 10:50 PM, Rich Megginson wrote:
...
On Fri, Jun 10, 2011 at 4:19 PM, Massimiliano Palapala@isis.poly.edu  wrote:
...
Hi Philip, all,
thanks for the advice. I have changed the code.. and the option is set
correctly. Question, do you think it is safe to do this as a fallback:
if(ldap_set_option(ld, LDAP_OPT_X_TLS_REQUIRE_CERT,&level) !=
    LDAP_OPT_SUCCESS)
{
  if(ldap_set_option(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,&level) !=
    LDAP_OPT_SUCCESS)
  {
    /// Total Failure
  }
}

Still.. although I set the option, I still get the -11 error when
trying to bind.
What -11 error?  Client or server?  Can you run with -d 1 to get
detailed trace information?
...
Is there any other option I have to set to "disable" certificate
verification for non-openssl crypto api ?
Cheers,
Max
On 06/10/2011 05:23 PM, Philip Guenther wrote:
[..]
...
Howard has already pointed out that the value must be an LDAP_OPT_X_TLS_*
constant and not a string; I just wanted to add that in version 2.3 and
earlier, that option (and most of the other TLS options) could only be set
globally: ldap_set_option() would fail for them if the first argument
wasn't NULL.  So, make sure you're building against a current version.
Philip Guenther
--
http://member.acm.org/~openca/
Massimiliano Pala, Ph.D.
Director, OpenCA Labs
Professor, NYU Poly
-- 

http://member.acm.org/~openca/

Massimiliano Pala, Ph.D.
Director, OpenCA Labs
Professor, NYU Poly

Re: Client App and STARTLS auth