ldap_rename() returns Protocol error?

[John Morrissey <jwm@horde.net>]

I'm unsure of exactly where my problem lies; I've read the PHP code where it
calls ldap_modrdn2_s() (IIRC) and it seems pretty straightforward. If this
sounds like a problem in the PHP code, though, please feel free to point me
in their direction.

I'm calling PHP's ldap_rename() function, which is returning Protocol error
(LDAP_PROTOCOL_ERROR). Before calling ldap_rename(), I set the protocol
version to 3:

ldap_set_option($this->link, LDAP_OPT_PROTOCOL_VERSION, 3);

which completes successfully. If I then ldap_get_option() to find the
protocol version, it returns version 3 (as expected).

This is where things get interesting. From servers/slapd/modrdn.c, line ~82:

if ( ber_peek_tag( op->o_ber, &length ) == LDAP_TAG_NEWSUPERIOR ) {
        if ( op->o_protocol < LDAP_VERSION3 ) {
        	/* Conection record indicates v2 but field
                 * newSuperior is present: report error.
                 */
                Debug( LDAP_DEBUG_ANY,
                       "modrdn(v2): invalid field newSuperior!\n",
                       0, 0, 0 );
                send_ldap_disconnect( conn, op,   
                        LDAP_PROTOCOL_ERROR, "newSuperior requires LDAPv3" );
                rc = SLAPD_DISCONNECT;
                goto cleanup;
        }
[...]

If I turn up debugging on the slapd in question it is, in fact, logging
"modrdn(v2) invalid field newSuperior!", so this is where I'm getting
LDAP_PROTOCOL_ERROR from. This seems to indicate that PHP isn't setting the
protocol version properly, even though ldap_get_option() returns protocol
version 3.

Anyone have thoughts on this? I'm really at a loss at this point.

thanks,
john
-- 
John Morrissey          _o            /\         ----  __o
jwm@horde.net        _-< \_          /  \       ----  <  \,
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