Re: Re: bug in pgcrypto 0.3

Applied for 7.1.X and 7.2.

> On Mon, May 14, 2001 at 01:15:59PM -0700, Ian Lance Taylor wrote:
> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > > Applied to 7.1.X and 7.2.
> > 
> > But, but...
> 
> ;)
> 
> > > > -    return srclen + (srclen / 3) + (srclen / (76 / 2));
> > > > +    return srclen + (srclen + 2 / 3) + (srclen / (76 / 2)) + 2;
> > 
> > (srclen + 2 / 3) is always the same as (srclen).
> > 
> > Perhaps this was meant to be ((srclen + 2) / 3)?
> 
> I guess too...  Its no good to create patches half-asleep...
> 
> > The current code is safe, but weird.
> 
> But I got very good response time :)
> 
> Well, the correct code - that corresponds to current
> encode - is below.  I even got the linefeed stuff wrong.
> 
> -- 
> marko
> 
> 
> 
> Index: contrib/pgcrypto/encode.c
> ===================================================================
> RCS file: /home/projects/pgsql/cvsroot/pgsql/contrib/pgcrypto/encode.c,v
> retrieving revision 1.5
> diff -u -r1.5 encode.c
> --- contrib/pgcrypto/encode.c    2001/05/13 02:17:09    1.5
> +++ contrib/pgcrypto/encode.c    2001/05/14 21:29:43
> @@ -349,7 +349,8 @@
>  uint
>  b64_enc_len(uint srclen)
>  {
> -    return srclen + (srclen + 2 / 3) + (srclen / (76 / 2)) + 2;
> +    /* 3 bytes will be converted to 4, linefeed after 76 chars */
> +    return (srclen + 2) * 4 / 3 + srclen / (76 * 3 / 4);
>  }
>  
>  uint
> 

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