Re: Should rolpassword be toastable?

Nathan Bossart <nathandbossart@gmail.com> writes:
> Oh, actually, I see that we are already validating the hash, but you can
> create valid SCRAM-SHA-256 hashes that are really long.  So putting an
> arbitrary limit (patch attached) is probably the correct path forward.  I'd
> also remove pg_authid's TOAST table while at it.

Shouldn't we enforce the limit in every case in encrypt_password,
not just this one?  (I do agree that encrypt_password is an okay
place to enforce it.)

I think you will get pushback from a limit of 256 bytes --- I seem
to recall discussion of actual use-cases where people were using
strings of a couple of kB.  Whatever the limit is, the error message
had better cite it explicitly.

Also, the ereport call needs an errcode.
ERRCODE_PROGRAM_LIMIT_EXCEEDED is probably suitable.

            regards, tom lane