Description:
------------
ldap_sasl_bind() sends bind DN as sasl authz id.

This is wrong ;)



Reproduce code:
---------------
<?php
        $host = "ldap://ldap.example.org";
        $dn = "uid=bfg,ou=users,ou=unix,ou=production,dc=noviforum,dc=si";
        $pw = "test";
        $realm = "PROD.EXAMPLE.ORG";
        $mech = "PLAIN";
        $authz_id = "bfg";
        $props = null;

        $r = ldap_connect($host);

        if (! $r) {
                echo "Unable to connect: \n";
                exit(1);
        }

        ldap_set_option($r, LDAP_OPT_PROTOCOL_VERSION, 3);
        echo "Connected, trying to bind...\n";

        $b = ldap_sasl_bind($r, $dn, $pw, $mech, $realm, $authz_id, $props);
        echo "LDAP bind: " . (($b) ? "OK" : "FAILED") . "\n";

?>


Expected result:
----------------
OK

... i've written php patch which i've sent to jani.

Actual result:
--------------
Dec  8 11:31:34 orion slapd[5404]: conn=113 fd=15 ACCEPT from 
IP=192.168.2.232:55217 (IP=0.0.0.0:389)


LDAP: Dec  8 11:31:12 orion slapd[5404]: conn=112 op=0 BIND 
dn="uid=bfg,ou=users,ou=unix,ou=production,dc=example,dc=si" method=163
PHP:  Dec  8 11:31:34 orion slapd[5404]: conn=113 op=0 BIND 
dn="uid=bfg,ou=users,ou=unix,ou=production,dc=example,dc=si" method=163



LDAP: Dec  8 11:31:12 orion saslauthd[17532]: rel_accept_lock : released 
accept lock
PHP:  Dec  8 11:31:34 orion saslauthd[17533]: rel_accept_lock : released 
accept lock


LDAP: Dec  8 11:31:12 orion saslauthd[17533]: get_accept_lock : acquired 
accept lock
PHP:  Dec  8 11:31:34 orion saslauthd[17531]: get_accept_lock : acquired 
accept lock
FAILED

Kerberos logs (ldap server authenticates against kerberos)

LDAP marked lines are produced when connecting to ldap server with ldapsearch(1), PHP marked lines are produced with php interpreter running script above.

LDAP: Dec  8 11:31:12 orion krb5kdc[5468]: AS_REQ (1 etypes {18}) 
195.250.198.144: NEEDED_PREAUTH: bfg@PROD.EXAMPLE.ORG for 
krbtgt/PROD.EXAMPLE.ORG@PROD.EXAMPLE.ORG, Additional pre-authentication 
required
PHP:  Dec  8 11:31:34 orion krb5kdc[5468]: AS_REQ (1 etypes {18}) 
195.250.198.144: CLIENT_NOT_FOUND: 
uid=bfg,ou=users,ou=unix,ou=production,dc=examle,dc=si@PROD.EXAMPLE.ORG 
for krbtgt/PROD.EXAMPLE.ORG@PROD.EXAMPLE.ORG, Client not found in Kerberos 
database