Hello again!
i wrote:
|Afan <[email protected]> wrote:
||> If you use the -u command line option or set the $USER environment
||> variable, then we fetch that specified user identity, instead of
||> deducing the one that is implied by "you" as the person who is
||> running the script.
||
||I tested -u and got this error:
||
|| The -u option cannot be used in send mode
|
|Oh! Indeed we yet follow the POSIX standard which defines -u only
|for receive mode (as «Read the system mailbox of the login name
|user»), which is of course wrong. (It was always more in the BSD
|Mail codebase.) I'll fix that in a minute!
So that finally made me think and i've spent the day redefining
what this MUA does. In the future:
. "-u USER" is exactly the same as "-f %USER".
. upon startup we verify that $LOGNAME is set to the name of the
active user, and correct as necessary, and complain, then.
. shall $USER be set, we do the same [with it].
. $LOGNAME and $USER are now readonly [thereafter].
Well, the problem of the BSD Mail codebase has always been that
the argument to -u is used for quite a lot of internal things
(like the so-called From_ line of MBOX mailboxes and, yes...,
a consideration of who YOU are). Until now i dragged this along,
only added verification code that ensures that the given user was
a valid one.
I really think you pointed out something important here, and
i hope the new situation reflects more what the standard really
means. Really "impersonating" as the -u USER would be something
really, really different and is possibly better accomplished with
su(1) or similar.
Once more: thanks -- this will be in v14.9!
Ciao!
--steffen
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