Paramiko X11 mode with python programming

Question

I do not manage to use the Paramiko python module passing through its ssh X11 management functionality.
I would like to use it as if I used the ssh -X option.
I have tried several solution but nothing work on my system.

Here is the code I tried:

client = paramiko.SSHClient()   
client.set_missing_host_key_policy(AutoAddPolicy())   
client.connect(machineName, username=xxx, password=xxx)  
t = client.get_transport ()  
chan = t.open_session ()  
chan.request_x11 ()  
chan.set_combine_stderr (True)  
chan.exec_command (xxxxx)  # the command that should display a X11 window  
bufsize = -1  
stdin = chan.makefile('wb', bufsize)  
stdout = chan.makefile('rb', bufsize)  
stderr = chan.makefile_stderr('rb', bufsize)  
for line in stdout:   
    print '... ' + line.strip('\n')  
client.close()

I also tried (instead of the exec_command) :

chan.get_pty("vt100", 80, 50)  
chan.invoke_shell()  
chan.send(xxxxx) # the command that should display a X11 window

Unfortunately, my application freezes at the moment that the X11 window should normally appear. Remark : If I launch a command without a X11 window displaying, it works perfectly.

Thank you for your help,
Regards

Is your DISPLAY environment variable set on the remote shell? If so what is it set to? — kevpie
– kevpie, Commented Dec 15, 2010 at 10:48

kwuTW · Accepted Answer · 2011-10-06 19:17:36Z

1

I needed to use paramiko to run the GUI in another X11 window and found this post. I think you may need to add few lines to make it work. It's all about the handler parameter.

Here, assign a function for incoming X11 connections.

chan.request_x11 (handler=testFunc())

And write a simple one.

import commands
def testFunc():
    cmd = "xterm"
    result = commands.getoutput(cmd)

It should pop out a new window after that. At least it works for me.

edited Oct 6, 2011 at 19:17

answered Oct 6, 2011 at 18:45

kwuTW

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2 Comments

oaimac Over a year ago

Yes it works under Linux. Congratulation. Thanks for your answer.

jcollado Over a year ago

With the code above, testFunc is executed locally (note that it's called before request_x11 and that its return value is used as the handler parameter), so it doesn't seem to be correct.

Community · Accepted Answer · 2017-05-23 12:04:40Z

1

Reading the paramiko code, I realized that paramiko only implements a way to establish an x11 channel. It does not connect the channel to the local x11 display. That is left to you.

Please see this answer for a working example of how to do this: https://stackoverflow.com/a/12903844/72911

edited May 23, 2017 at 12:04

CommunityBot

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answered Oct 15, 2012 at 21:11

Gary van der Merwe

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