[qmtest] SSH Password Dialog Box?

[Nathaniel Smith]

On Wed, Jan 07, 2004 at 04:52:06PM -0500, Scott Lowrey wrote:
>    If I run the exact same script in QMTest as a python.ExecTest, a small
>    dialog box pops up asking me the password for "user at host".  Why?  I'm
>    raising an exception and catching it in my script!  Is there something
>    else going on here?

Are you sure you're raising an exception and catching it?  I would
hazard a guess that something different about your environment is
causing ssh to not even both prompting for a password directly.

>    - oh wait.  Let me guess: there's no pseudo-terminal associated with the
>    process, so OpenSSH is talking to KDE or something like that?  I know some
>    apps write directly to /dev/tty if they can - is that somehow
>    circumventing Pexpect and causing the underlying ssh process to try to
>    talk to the window manager?

ssh(1):

  If ssh needs a passphrase, it will read the passphrase from the
  current terminal if it was run from a terminal.  If ssh does not
  have a terminal associated with it but DISPLAY and SSH_ASKPASS are
  set, it will execute the program specified by SSH_ASKPASS and open
  an X11 window to read the passphrase.

I would hazard a guess that yeah, somehow ssh is not hooked up to a
terminal, and that's triggering the above check.  I have no idea _why_
ssh wouldn't be hooked up to a terminal -- shouldn't pexpect be taking
care of that? -- but that's probably what's going on.  I certainly
don't know what QMTest would be doing to break pexpect.

-- Nathaniel

-- 
Details are all that matters; God dwells there, and you never get to
see Him if you don't struggle to get them right. -- Stephen Jay Gould