ldap_put_filter
if (ldap_put_filter(ber, filter) < 0)
extern int ldap_put_filter(BerElement *ber, char *);
int ldap_put_filter( BerElement *ber, char *str );
err = ldap_put_filter( ber, fdup );
if ( ldap_put_filter( ber, str ) == -1 )