From: unbewusst.sein@... (=?ISO-8859-1?Q?Une_B=E9v?= =?ISO-8859-1?Q?ue?=)
Date: 2008-07-22T17:04:41+09:00
Subject: Re: interacting with a shell script (ssh)

ara.t.howard <ara.t.howard@gmail.com> wrote:

> 
> not easily.
> 
> - use ssh keys and specify only key auth so it fails otherwise
> - use net/ssh
> - use a pty to provide the password
> - rely on ssh-agent
> - do *hairly* io operations to enter the passprase yourself

first thanks for your reply.

firstly, i've tried without ruby, from zsh shell.

if i don't use ssh-agent like :
$  ssh -p 2222 root@169.254.0.2
Enter passphrase for key '/Users/yt/.ssh/id_dsa': 
Permission denied (publickey).

NO access in that case.

however using ssh-agent that way :

$ eval `ssh-agent -s`
Agent pid 2044

$ ssh-add ~/.ssh/id_dsa
Enter passphrase for /Users/yt/.ssh/id_dsa: 
Identity added: /Users/yt/.ssh/id_dsa (/Users/yt/.ssh/id_dsa)
$ echo $SSH_AUTH_SOCK
/tmp/ssh-kbqXlJAxOy/agent.2043
$   ssh -p 2222 root@169.254.0.2
   _______  _______      _______  _______  _______  __       _______
  |       ||       |    |__   __||   _   ||   _   ||  |     |   ____|
  |__   __||__   __| ___   | |   |  |_|  ||  |_|  ||  |____ |____   |
     | |      | |   |___|  |_|   |_______||_______||_______||_______|
     |_|      |_|               Bienvenue sur le Twin Tact !!!
Last login: Tue Jul 22 08:31:35 UTC 2008
# exit
Connection to 169.254.0.2 closed.

$scp -P 2222 Sun_URLs.txt root@169.254.0.2:/mnt/fat 
Sun_URLs.txt  100%  307     0.3KB/s   00:00

then, using ssh-agent, i can do what i want.

why such a difference ?


obviously have tried also using net/ssh and net/scp (+Highline) with
ruby :

require 'net/ssh'
require 'net/scp'

Net::SSH.start("169.254.0.2", "root", :password => "<my pass phrase>",
:port => 2222) do |ssh|
  ssh.scp.upload! "/mnt/fat", "/Users/yt/Desktop/scp_ESSAIS.txt"
end


here i got :

Enter passphrase for /Users/yt/.ssh/id_dsa: 
/opt/local/lib/ruby/gems/1.8/gems/net-ssh-2.0.3/lib/net/ssh.rb:195:in
`start': root (Net::SSH::AuthenticationFailed)
        from ./net-scp.rb:15


then net/ssh is asking for the pass phrase althought it's given by
:password

may be there is another option for the passphrase not being the same as
:password ?

-- 
Une B�vue