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.

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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