On 2023/08/17 02:21:18 +0000, Klemens Nanni <k...@openbsd.org> wrote:
> On Fri, Aug 11, 2023 at 03:44:46PM +0000, Klemens Nanni wrote:
> > On Wed, Aug 02, 2023 at 10:37:36AM +0000, Klemens Nanni wrote:
> > > Creating new volumes prompts
> > >   Passphrase:
> > >   Re-type passphrase:
> > > which is sane for interative usage, but -s (which omits prompts) to read
> > > from stdin also prompts twice.
> > > 
> > > I think that's neither intuitive nor ergonomical and as intended for
> > > non-interactive scripts, -s should take a new passphase just once.
> > > 
> > > Until a month ago, the manual errorneously said -s could not be used 
> > > during
> > > initial creation anyway, so I worry little about existing scripts like
> > > 
> > >   printf '%s\n%s\n' "$pw" "$pw" | bioctl -s -cC -lsd0a softraid0
> > > 
> > > Diff below makes -s create new volumes with a single passphase:
> > > 
> > >   # echo secret |       bioctl -s -Cforce -cC -lvnd0a softraid0
> > >   bioctl: Passphrases did not match
> > >   # echo secret | ./obj/bioctl -s -Cforce -cC -lvnd0a softraid0
> > >   softraid0: CRYPTO volume attached as sd3
> > > 
> > > Feedback? Objection? OK?
> > 
> > Ping.
> 
> I'll commit this in a few days unless I hear objections.
> 
> The current -s behaviour is stupid;  nothing else I know *silently* prompts
> for passphrase *and* confirmation without anything in between.
> 
> This stuff must be either interactive or quiet and one-shot, not in between.

fwiw I agree, i find it dumb too to read the password twice when
reading from, for e.g., a pipe.  Outside of my comfort zone but it
reads fine so ok op@.

> Index: bioctl.c
> ===================================================================
> RCS file: /cvs/src/sbin/bioctl/bioctl.c,v
> retrieving revision 1.151
> diff -u -p -r1.151 bioctl.c
> --- bioctl.c  18 Oct 2022 07:04:20 -0000      1.151
> +++ bioctl.c  17 Aug 2023 02:16:37 -0000
> @@ -989,7 +989,7 @@ bio_kdf_generate(struct sr_crypto_kdfinf
>       derive_key(kdfinfo->pbkdf.generic.type, kdfinfo->pbkdf.rounds,
>           kdfinfo->maskkey, sizeof(kdfinfo->maskkey),
>           kdfinfo->pbkdf.salt, sizeof(kdfinfo->pbkdf.salt),
> -         "New passphrase: ", 1);
> +         "New passphrase: ", rpp_flag == RPP_REQUIRE_TTY ? 1 : 0);
>  }
>  
>  int


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