[Samba] Help for ber_printf(ber, "N}" in pdb_ldap.c

[Li, Ying (ESG)]

Thanks a lot.
-Ying 

> -----Original Message-----
> From: Volker Lendecke [mailto:Volker.Lendecke at SerNet.DE] 
> Sent: Monday, June 04, 2007 11:01 PM
> To: Li, Ying (ESG)
> Cc: samba at lists.samba.org
> Subject: Re: [Samba] Help for ber_printf(ber, "N}" in pdb_ldap.c
> 
> On Mon, Jun 04, 2007 at 09:14:24PM -0000, Li, Ying (ESG) wrote:
> > definition of the "N" format character either. I only saw the lower 
> > case format character "n"(Null). Therefore, I'd like to 
> know what is 
> > the meaning of the encoding format character "N".
> > 
> >  ber_printf( ber, "N}" );
> > 
> > Could somebody run into the problem, or can help me?
> 
> From encode.c:
> 
> /* N tag */
> static ber_tag_t lber_int_null = 0;
> 
> ....
> 
>                 case 'n':       /* null */
>                         rc = ber_put_null( ber, ber->ber_tag);
>                         break;
> 
>                 case 'N':       /* Debug NULL */
>                         if( lber_int_null != 0 ) {
>                                 /* Insert NULL to ensure * 
> peer ignores unknown tags */
>                                 rc = ber_put_null( ber, 
> lber_int_null );
>                         } else {
>                                 rc = 0;
>                         }
>                         break;
> 
> So it seems this is just something to confuse readers in this case...
> 
> Volker
>