paramiko

[Guilherme Polo]

2008/1/16, Tarun Kapoor <tarun.kap at gmail.com>:
> On Jan 16, 11:38 am, "Guilherme Polo" <ggp... at gmail.com> wrote:
> > 2008/1/16, Tarun Kapoor <tarun.... at gmail.com>:
> >
> >
> >
> > >     # now, connect and use paramiko Transport to negotiate SSH2 across
> > > the connection
> > >     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> > >     sock.connect((hostname, port))
> >
> > >     t = paramiko.Transport(sock)
> > >     t.start_client()
> > >     key = t.get_remote_server_key()
> >
> > >     event = threading.Event()
> > >     t.auth_password(username=username, password=password, event=event)
> > >     event.wait()
> >
> > >     if not t.is_authenticated():
> > >         print "not authenticated"
> >
> > > output:
> > > not authenticated
> >
> > This is a different problem I guess, now you are usin get_remote_server_key.
> > And why are you creating event after calling start_client without
> > specifying it ?
> >
> >
> >
> >
> >
> > > On Jan 16, 11:11 am, "Guilherme Polo" <ggp... at gmail.com> wrote:
> > > > 2008/1/16, Tarun Kapoor <tkap... at wscm.net>:
> >
> > > > > I am using paramiko to do an SFTP file transfer... I was able to connect to
> > > > > the remote server using an SFTP client I have just to make sure that
> > > > > username and password are working.. This is the code.
> >
> > > > >     # now, connect and use paramiko Transport to negotiate SSH2 across the
> > > > > connection
> >
> > > > >     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> >
> > > > >     sock.connect((hostname, port))
> >
> > > > >     t = paramiko.Transport(sock)
> >
> > > > >     event = threading.Event()
> >
> > > > >     t.start_client(event)
> >
> > > > >     event.wait(15)
> >
> > > > >     if not t.is_active():
> >
> > > > >         print 'SSH negotiation failed.'
> >
> > > > >         sys.exit(1)
> >
> > > > >     else:
> >
> > > > >         print "SSH negotiation sucessful"
> >
> > > > >     event.clear()
> >
> > > > >     t.auth_password(username=username, password=password,event=event)
> >
> > > > >     if not t.is_authenticated():
> >
> > > > >         print "not authenticated"
> >
> > > > > output:
> >
> > > > > SSH negotiation successful
> >
> > > > > not authenticated
> >
> > > > > Tarun
> >
> > > > > Waterstone Capital Management
> >
> > > > > 2 Carlson Parkway, Suite 260
> >
> > > > > Plymouth, MN 55447
> >
> > > > > Direct: 952-697-4123
> >
> > > > > Cell:    612-205-2587
> > > > >  Disclaimer This e-mail and any attachments is confidential and intended
> > > > > solely for the use of the individual(s) to whom it is addressed. Any views
> > > > > or opinions presented are solely those of the author and do not necessarily
> > > > > represent those of Waterstone Capital Management, L.P and affiliates. If you
> > > > > are not the intended recipient, be advised that you have received this
> > > > > e-mail in error and that any use, dissemination, printing, forwarding or
> > > > > copying of this email is strictly prohibited. Please contact the sender if
> > > > > you have received this e-mail in error. You should also be aware that
> > > > > e-mails are susceptible to interference and you should not assume that the
> > > > > contents of this e-mail originated from the sender above or that they have
> > > > > been accurately reproduced in their original form. Waterstone Capital
> > > > > Management, L.P. and affiliates accepts no responsibility for information,
> > > > > or errors or omissions in this e-mail or use or misuse thereof. If in doubt,
> > > > > please verify the authenticity with the sender.
> > > > > --
> > > > >http://mail.python.org/mailman/listinfo/python-list
> >
> > > > You are missing an event.wait() after t.auth_password.
> > > > Also, why are you passing this magic value "15" to event.wait() ? That
> > > > parameter is passed to class _Verbose to indicate if debug messages
> > > > should be displayed or not, so typical values would be 0/1 or
> > > > False/True.
> >
> > > > --
> > > > -- Guilherme H. Polo Goncalves
> >
> > > --
> > >http://mail.python.org/mailman/listinfo/python-list
> >
> > --
> > -- Guilherme H. Polo Goncalves
>
>
> ok here is the problem... I don't know what is the correct way... The
> only demos i have from the paramiko library use a hostkeyfile. since i
> don't have that i thought i would use the get_remote_key to get the
> key and then connect it using the code in the demo.. But clearly
> nothing is working...I should not HAVE to use the key since i should
> be able to authenticate using the password...
>
> Can you please suggest the right way to go ?

You don't need to use key to authenticate using username and password,
indeed. And you don't. Your first email was almost correct, you just
needed to add event.wait() after t.auth_password. It worked here after
doing that change. You can check out my version:

import sys
import socket
import paramiko
import threading

if len(sys.argv) != 4:
    print "%s hostname user password" % sys.argv[0]
    sys.exit(1)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((sys.argv[1], 22))

t = paramiko.Transport(sock)
event = threading.Event()
t.start_client(event)

event.wait()

if not t.is_active():
    print 'SSH negotiation failed.'
    sys.exit(1)
else:
    print "SSH negotiation sucessful"

event.clear()
t.auth_password(username=sys.argv[2], password=sys.argv[3], event=event)
event.wait()
if not t.is_authenticated():
    print "Authentication failed."
else:
    print "Authenticated!"

t.close()

>
> Thanks for your time !
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves