behaviour of exit-status in openssh

From: Glen Matthews (Glen_at_montreal.hcl.com)
Date: 09/19/05

  • Next message: Pablo Hauser: "SSH Tunnel - How does it works?" 
    Date: Mon, 19 Sep 2005 14:34:38 -0400
To: <secureshell@securityfocus.com>

    Hi,

      I've noticed that I sometimes get the SSH2_MSG_CHANNEL_REQUEST
    exit-status packet when executing a command with a small amount of text
    output *before* the output. But the connection (draft?) RFC states that:

    "The channel needs to be closed with SSH_MSG_CHANNEL_CLOSE after this
    message."

    which might imply that there should be no more output from the channel,
    clearly as I observe not the way that openssh behaves (seen in 3.9p1 and
    possibly later). The wording might also imply that it is the server
    that needs to send the close message. Regardless, it would seem that
    sending a CHANNEL_DATA message after this is wrong.

    Is this intended behaviour or a bug?

    Glen Matthews

  • Next message: Pablo Hauser: "SSH Tunnel - How does it works?"

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