Cyrille Lefevre a écrit :
sorry, repost to -standards w/ an s !
jhell a écrit :
On Sun, 24 Jan 2010 21:57, glen.j.barber@ wrote:
Cyrille Lefevre wrote:
su password prompt is displayed to *stdout* instead of */dev/tty*.
# su user
$ su root -c date > /tmp/date 2>&1
(nothing displayed)
$ cat /tmp/date
Password:su: Sorry
$ uname -a
FreeBSD freebsd8.my.domain 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov
21 15:48:17 UTC 2009
r...@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
I suppose this is a getpass() problem ?
This is intended operation as su(1) may not always be affiliated with
a TTY. This leaves it open for a script to chat with much like what
samba does with its passwd chat mechanism.
just to feed the debate :
aix 5.2 : prompt to tty
hp-ux : prompt to stderr
netbsd : prompt to tty
solaris 9 : prompt to stderr
solaris 10 : prompt to tty
openbsd : prompt to tty
ubuntu : prompt to stderr
freebsd is the only one which prompt to stdout !
IMHO, it should at least prompt to stderr if not tty...
and report errors to stderr as usually.
CC -standards
found it, the guilty is prompt() in
src/contrib/openpam/lib/openpam_ttyconv.c and not getpass() as usual...
=> fputs(msg, stdout);
which should be, IMHO, something like :
FILE *ttyp;
ttyp = fopen("/dev/tty", "w")
if (!stdtty)
ttyp = isatty(fileno(stderr)) ? stderr : stdout;
fputs(msg, ttyp);
or, at least :
fputs(msg, stderr);
Regards,
Cyrille Lefevre
--
mailto:cyrille.lefevre-li...@laposte.net
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