Re: [Ssh-sftp-perl-users] Device does not support shell request not preceded by pty request

[DonKiShoot <don...@wa...>]

Hello all,

I'm trying to send some commands to my switch HP Procurve 2650 in ssh2 
with Net::SSH::Perl with user 'operator' and pubkey authentification.
It appears that i have a problem when starting to send command but 
authentification seems good.

This is sample of my perl script and next debug trace with error i receive:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
foreach my $addr (keys %Switch) {
#    print "$addr, $Switch{$addr}{'login'} :\n";
   my $ssh = Net::SSH::Perl->new($addr,'debug' => 1, 'use_pty' => 1, 
'protocol' => 2, 'interactive' => 0, options => ["RhostsAuthentication 
no"]);

#$ssh->register_handler("stdout", sub {
#        my($channel, $buffer) = @_;
#        print "I received this: ", $buffer->bytes;
#    });

   $ssh->login($Switch{$addr}{'login'});

   my($stdout, $stderr, $exit) = $ssh->cmd("\n");
   print "$stdout $stderr $exit\n";
   ($stdout, $stderr, $exit) = $ssh->cmd("ping $ip");
   print "$stdout $stderr $exit\n";
}
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
srv78supervision: Reading configuration data /root/.ssh/config
srv78supervision: Reading configuration data /etc/ssh_config
srv78supervision: Allocated local port 1023.
srv78supervision: Connecting to 10.1.2.22, port 22.
srv78supervision: Remote version string: SSH-2.0-OpenSSH_3.7.1p2

srv78supervision: Remote protocol version 2.0, remote software version 
OpenSSH_3.7.1p2
srv78supervision: Net::SSH::Perl Version 1.30, protocol version 2.0.
srv78supervision: No compat match: OpenSSH_3.7.1p2.
srv78supervision: Connection established.
srv78supervision: Sent key-exchange init (KEXINIT), wait response.
srv78supervision: Algorithms, c->s: 3des-cbc hmac-sha1 none
srv78supervision: Algorithms, s->c: 3des-cbc hmac-sha1 none
srv78supervision: Entering Diffie-Hellman Group 1 key exchange.
srv78supervision: Sent DH public key, waiting for reply.
srv78supervision: Received host key, type 'ssh-rsa'.
srv78supervision: Host '10.1.2.22' is known and matches the host key.
srv78supervision: Computing shared secret key.
srv78supervision: Verifying server signature.
srv78supervision: Waiting for NEWKEYS message.
srv78supervision: Enabling incoming encryption/MAC/compression.
srv78supervision: Send NEWKEYS, enable outgoing encryption/MAC/compression.
srv78supervision: Sending request for user-authentication service.
srv78supervision: Service accepted: ssh-userauth.
srv78supervision: Trying empty user-authentication request.
srv78supervision: Authentication methods that can continue: 
publickey,password.
srv78supervision: Next method to try is publickey.
srv78supervision: Trying pubkey authentication with key file 
'/root/.ssh/id_dsa'
srv78supervision: Login completed, opening dummy shell channel.
srv78supervision: channel 0: new [client-session]
srv78supervision: Requesting channel_open for channel 0.
srv78supervision: channel 0: open confirm rwindow 0 rmax 32768
srv78supervision: Got channel open confirmation, requesting shell.
srv78supervision: Requesting service shell on channel 0.
srv78supervision: channel 1: new [client-session]
srv78supervision: Requesting channel_open for channel 1.
srv78supervision: Entering interactive session.
/*Received disconnect message: Device does not support shell request not 
preceded by pty request.
at /usr/lib/perl5/vendor_perl/5.8.8/Net/SSH/Perl/SSH2.pm line 284*/

What can i do to resolve this problem ?

Thx all