scp library

From: Hari S (catchhs_at_yahoo.com)
Date: 12/08/04

  • Next message: Alexander Klimov: "Re: scp library" 
    Date: Tue, 7 Dec 2004 15:49:55 -0800 (PST)
To: secureshell@securityfocus.com

    Hello,

    I've some doubts regarding the scp
    protocol/implementation, which I thought I should get
    clarified. I'm trying to develop a scp client library
    using the openssh, with the following requirements /
    features.

    - client side library for scp
    - no password invokation (API for providing password
    to the lib)
    - no control over the scp/ssh server
    - localhost to remotehost functionality (at the
    minimum)
    - openssh doesnt provide a library/API for scp.

    I though I should make sure what I understand from the
    scp.c (I couldnt find any good docs for scp :-)) is
    true. For copy from localhost tpo remotehost,
    - "scp file user@server:" at the client
    - client tries to establish "ssh" with the server
    - local "ssh" client asks the user for passwd
    - "ssh" session is established
    - "scp -t file user@server" is executed at the server
    end.
    - both the scps' cooperate together to transfer the
    file (using the same ssh session)

    Now,
    a. Can I eliminate the password invocation in my
    library? (I believe the local ssh client asks for the
    passwd. So, do I need any tweaks in the "ssh" client
    code as well)?
    b. I wouldnt have any control over the "scp" program
    running at the server end. Will this have any effect n
    my library?
    c. Are there any other things I should know before
    staring off with the lib?

    Thanks for any help,
    Hari

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  • Next message: Alexander Klimov: "Re: scp library"

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