* Jörgen Persson <[EMAIL PROTECTED]> [010320 09:27]:
> On Tue, Mar 20, 2001 at 06:26:35AM -0500, Peter Green wrote:
> [snip]
> > Sure, but the mycheckpasswd part is hanging me up. Specifically, writing to
> > the numbered FDs is hanging me up, and I didn't have a lot of time to figure
> > this out, so I was hoping something already existed.
> >
> > If anyone could whip up the important bits (the IO redirection and the
> > execution string), I could easily figure out the rest. And I'd be extremely
> > grateful. :-)
> >
> > Thanks,
>
> Sorry for the delay but I'm at work... Well, here's some help with the
> file descriptors, I tested the following successfully under bash-2.03.
>
> # checkpassword echo $? 3< /tmp/dummypwd
> 0
> # od -c /tmp/dummypwd
> 0000000 d u m m y \0 d u m m y d u m m y
> 0000020 \0 9 8 5 0 9 3 2 3 9 004
>
> Check out http://cr.yp.to/checkpwd/interface.html
Thanks for the help, Jörgen! However, it wasn't the format of the string
checkpassword (and friends) expects; it's the IO. For example, let's say I
wanted to do this in bash2. I might do, simply:
#!/bin/bash2
# check vmailmgr first; save the environment
# /tmp/scr just executes /usr/bin/id
ENVIRON = $(/usr/bin/checkvpw /tmp/scr Maildir/)
rc=$?
if [ $rc -ne 0 ]; then
# failed; try vpopmail
ENVIRON = $(/usr/local/vpopmail/bin/vchkpw /tmp/scr Maildir/)
rc=$?
if [ $rc -ne 0 ]; then
# failed all
echo "-ERR Authorization failed"
exit $rc
else
export $ENVIRON
exec qmail-pop3d "$@"
fi
else
export $ENVIRON
exec qmail-pop3d "$MAILDIR"
fi
It mostly works, since all child processes inherit FD 3 properly. However,
if the first method fails, it cannot try the second method, since FD 3 has
already hit EOF; how can I rewind this from bash? Also, if it succeeds, the
exec line simply does not work; the error is always ``-ERR this user has no
$HOME/Maildir''. I have double-checked the environment with
``env>>/tmp/debug'' after the export call, and home get set properly.
This is simply out of my league, I think. Any additional thoughts before I
throw in the towel? Would this be useful for other situations?
Thanks for the continued help!
/pg
--
Peter Green : Gospel Communications Network, SysAdmin : [EMAIL PROTECTED]
---
If Bill Gates is the Devil then Linus Torvalds must be the Messiah.
(Unknown source)
