From challman at gmail.com  Wed Aug  1 20:54:44 2007
From: challman at gmail.com (Chris Hallman)
Date: Wed, 1 Aug 2007 23:54:44 -0400
Subject: [paramiko] Fwd: paramiko mailing list
In-Reply-To: <18e3f33d0707270746o24abc187n2f902c1ec573340b@mail.gmail.com>
References: <18e3f33d0707270746o24abc187n2f902c1ec573340b@mail.gmail.com>
Message-ID: <9f68812f0708012054m15ae7635n97675d924cbb68cf@mail.gmail.com>

fyi....


---------- Forwarded message ----------
From: Eli Criffield <elicriffield at gmail.com>
Date: Jul 27, 2007 10:46 AM
Subject: paramiko mailing list
To: Chris Hallman <challman at gmail.com>

Hey can you email the paramiko mailing list and let them know there
having problems with there mailman page. I can't seem to get signed up
I never get the confirmation email.

Eli
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From craig.strait at pnl.gov  Thu Aug  2 09:27:11 2007
From: craig.strait at pnl.gov (Strait, Craig)
Date: Thu, 2 Aug 2007 09:27:11 -0700
Subject: [paramiko] Fwd: paramiko mailing list
References: <18e3f33d0707270746o24abc187n2f902c1ec573340b@mail.gmail.com>
	<9f68812f0708012054m15ae7635n97675d924cbb68cf@mail.gmail.com>
Message-ID: <7ABADDD065D41B419B4B46076D4F44A2431A48@EMAIL01.pnl.gov>

And I can't unsubscribe.
 

________________________________

From: paramiko-bounces at lag.net on behalf of Chris Hallman
Sent: Wed 8/1/2007 8:54 PM
To: paramiko at lag.net
Subject: [paramiko] Fwd: paramiko mailing list


fyi....


---------- Forwarded message ----------
From: Eli Criffield <elicriffield at gmail.com>
Date: Jul 27, 2007 10:46 AM 
Subject: paramiko mailing list
To: Chris Hallman <challman at gmail.com>

Hey can you email the paramiko mailing list and let them know there
having problems with there mailman page. I can't seem to get signed up 
I never get the confirmation email.

Eli


From titleistfour at gmail.com  Mon Aug  6 07:13:34 2007
From: titleistfour at gmail.com (jay)
Date: Mon, 6 Aug 2007 09:13:34 -0500
Subject: [paramiko] Testing an exception
Message-ID: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>

Hello,

Like to start off saying paramiko is fantastic and has been a huge time
saver for me at work.  Thanks for the hard work!

I got the following traceback and am unsure what the problem is.

Traceback (most recent call last):
  File "ATM.py", line 115, in <module>
    t.connect(username=sftpRemoteUser, password=sftpRemotePassword)
  File
"/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
line 931, in connect
    self.start_client()
  File
"/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
line 398, in start_client
    raise e
SSHException: Error reading SSH protocol banner

I thought my code would catch all exceptions, but apparently not.  This
particular problem showed up inside this

try:
except Exception, e:

So, I would like to try and duplicate it, but I'm not even sure what the
problem was.  Any suggestions on how to duplicate this problem and make sure
the code catches it?  Thanks

 Jay
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From toddw at activestate.com  Tue Aug  7 10:43:28 2007
From: toddw at activestate.com (Todd Whiteman)
Date: Tue, 07 Aug 2007 10:43:28 -0700
Subject: [paramiko] Testing an exception
In-Reply-To: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>
References: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>
Message-ID: <46B8AF40.5030003@activestate.com>

Hi Jay,

You get this exception from connecting to a remote machine on a non-ssh 
port, so when Paramiko tries to read in the relevant SSH information, it 
fails and raises the SSHException you received.

A simple repro example is to try and connect to the ftp port (port 21) 
instead of the SSH port (port 22).

Cheers,
Todd

jay wrote:
> Hello,
>  
> Like to start off saying paramiko is fantastic and has been a huge time 
> saver for me at work.  Thanks for the hard work!
>  
> I got the following traceback and am unsure what the problem is.
>  
> Traceback (most recent call last):
>   File "ATM.py", line 115, in <module>
>     t.connect(username=sftpRemoteUser, password=sftpRemotePassword)
>   File 
> "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py", 
> line 931, in connect
>     self.start_client()
>   File 
> "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py", 
> line 398, in start_client
>     raise e
> SSHException: Error reading SSH protocol banner
>  
> I thought my code would catch all exceptions, but apparently not.  This 
> particular problem showed up inside this
>  
> try:
> except Exception, e:
>  
> So, I would like to try and duplicate it, but I'm not even sure what the 
> problem was.  Any suggestions on how to duplicate this problem and make 
> sure the code catches it?  Thanks
> 
>  Jay
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> paramiko mailing list
> paramiko at lag.net
> http://mail.lag.net/mailman/listinfo/paramiko



From titleistfour at gmail.com  Tue Aug  7 10:44:59 2007
From: titleistfour at gmail.com (jay)
Date: Tue, 7 Aug 2007 12:44:59 -0500
Subject: [paramiko] Testing an exception
In-Reply-To: <46B8AF40.5030003@activestate.com>
References: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>
	<46B8AF40.5030003@activestate.com>
Message-ID: <7c25bb490708071044h1cc186cdsc65eb5fccc973dc@mail.gmail.com>

Thanks Todd.  Its interesting that I was connected to an ssh server on port
22.  Nothing non standard about that.  Could this also be a timeout related
exception?  If the remote server is slow to respond?

Jay

On 8/7/07, Todd Whiteman <toddw at activestate.com> wrote:
>
> Hi Jay,
>
> You get this exception from connecting to a remote machine on a non-ssh
> port, so when Paramiko tries to read in the relevant SSH information, it
> fails and raises the SSHException you received.
>
> A simple repro example is to try and connect to the ftp port (port 21)
> instead of the SSH port (port 22).
>
> Cheers,
> Todd
>
> jay wrote:
> > Hello,
> >
> > Like to start off saying paramiko is fantastic and has been a huge time
> > saver for me at work.  Thanks for the hard work!
> >
> > I got the following traceback and am unsure what the problem is.
> >
> > Traceback (most recent call last):
> >   File "ATM.py", line 115, in <module>
> >     t.connect(username=sftpRemoteUser, password=sftpRemotePassword)
> >   File
> >
> "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
> > line 931, in connect
> >     self.start_client()
> >   File
> >
> "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
> > line 398, in start_client
> >     raise e
> > SSHException: Error reading SSH protocol banner
> >
> > I thought my code would catch all exceptions, but apparently not.  This
> > particular problem showed up inside this
> >
> > try:
> > except Exception, e:
> >
> > So, I would like to try and duplicate it, but I'm not even sure what the
> > problem was.  Any suggestions on how to duplicate this problem and make
> > sure the code catches it?  Thanks
> >
> >  Jay
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > paramiko mailing list
> > paramiko at lag.net
> > http://mail.lag.net/mailman/listinfo/paramiko
>
>
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From toddw at activestate.com  Tue Aug  7 18:32:38 2007
From: toddw at activestate.com (Todd Whiteman)
Date: Tue, 07 Aug 2007 18:32:38 -0700
Subject: [paramiko] Testing an exception
In-Reply-To: <7c25bb490708071044h1cc186cdsc65eb5fccc973dc@mail.gmail.com>
References: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>	<46B8AF40.5030003@activestate.com>
	<7c25bb490708071044h1cc186cdsc65eb5fccc973dc@mail.gmail.com>
Message-ID: <46B91D36.3050501@activestate.com>

Hi Jay,

Yes, after looking at the code, a timeout is a case that generates the 
exception you describe. The timeout works like by reading the first line 
from the server (waiting up to 15 seconds by default) and then every 
subsequent banner line must be received within 2 seconds, otherwise you 
get that exception. The relevant code is below:


     def _check_banner(self):
         # this is slow, but we only have to do it once
         for i in range(5):
             # give them 15 seconds for the first line, then just 2 seconds
             # each additional line.  (some sites have very high latency.)
             if i == 0:
                 timeout = self.banner_timeout
             else:
                 timeout = 2
             try:
                 buf = self.packetizer.readline(timeout)
             except Exception, x:
                 raise SSHException('Error reading SSH protocol banner' 
+ str(x))
             if buf[:4] == 'SSH-':
                 break


Cheers,
Todd

jay wrote:
> Thanks Todd.  Its interesting that I was connected to an ssh server on 
> port 22.  Nothing non standard about that.  Could this also be a timeout 
> related exception?  If the remote server is slow to respond?
> 
> Jay
> 
> On 8/7/07, *Todd Whiteman* <toddw at activestate.com 
> <mailto:toddw at activestate.com>> wrote:
> 
>     Hi Jay,
> 
>     You get this exception from connecting to a remote machine on a non-ssh
>     port, so when Paramiko tries to read in the relevant SSH information, it
>     fails and raises the SSHException you received.
> 
>     A simple repro example is to try and connect to the ftp port (port 21)
>     instead of the SSH port (port 22).
> 
>     Cheers,
>     Todd
> 
>     jay wrote:
>      > Hello,
>      >
>      > Like to start off saying paramiko is fantastic and has been a
>     huge time
>      > saver for me at work.  Thanks for the hard work!
>      >
>      > I got the following traceback and am unsure what the problem is.
>      >
>      > Traceback (most recent call last):
>      >   File "ATM.py", line 115, in <module>
>      >     t.connect(username=sftpRemoteUser, password=sftpRemotePassword)
>      >   File
>      >
>     "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
>      > line 931, in connect
>      >     self.start_client()
>      >   File
>      >
>     "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
>      > line 398, in start_client
>      >     raise e
>      > SSHException: Error reading SSH protocol banner
>      >
>      > I thought my code would catch all exceptions, but apparently
>     not.  This
>      > particular problem showed up inside this
>      >
>      > try:
>      > except Exception, e:
>      >
>      > So, I would like to try and duplicate it, but I'm not even sure
>     what the
>      > problem was.  Any suggestions on how to duplicate this problem
>     and make
>      > sure the code catches it?  Thanks
>      >
>      >  Jay
>      >
>      >
>      >
>     ------------------------------------------------------------------------
> 
>      >
>      > _______________________________________________
>      > paramiko mailing list
>      > paramiko at lag.net <mailto:paramiko at lag.net>
>      > http://mail.lag.net/mailman/listinfo/paramiko
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> paramiko mailing list
> paramiko at lag.net
> http://mail.lag.net/mailman/listinfo/paramiko



From titleistfour at gmail.com  Wed Aug  8 06:05:10 2007
From: titleistfour at gmail.com (jay)
Date: Wed, 8 Aug 2007 08:05:10 -0500
Subject: [paramiko] Testing an exception
In-Reply-To: <46B91D36.3050501@activestate.com>
References: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>
	<46B8AF40.5030003@activestate.com>
	<7c25bb490708071044h1cc186cdsc65eb5fccc973dc@mail.gmail.com>
	<46B91D36.3050501@activestate.com>
Message-ID: <7c25bb490708080605u1ca27cacg623469be3b75d741@mail.gmail.com>

That makes more sense.  The remote SSH server is VEEERY slow and login times
can exceed 1 minute sometimes.  Unfortunately, that server is out of my
control.

Thanks

Jason

On 8/7/07, Todd Whiteman <toddw at activestate.com> wrote:
>
> Hi Jay,
>
> Yes, after looking at the code, a timeout is a case that generates the
> exception you describe. The timeout works like by reading the first line
> from the server (waiting up to 15 seconds by default) and then every
> subsequent banner line must be received within 2 seconds, otherwise you
> get that exception. The relevant code is below:
>
>
>      def _check_banner(self):
>          # this is slow, but we only have to do it once
>          for i in range(5):
>              # give them 15 seconds for the first line, then just 2
> seconds
>              # each additional line.  (some sites have very high latency.)
>              if i == 0:
>                  timeout = self.banner_timeout
>              else:
>                  timeout = 2
>              try:
>                  buf = self.packetizer.readline(timeout)
>              except Exception, x:
>                  raise SSHException('Error reading SSH protocol banner'
> + str(x))
>              if buf[:4] == 'SSH-':
>                  break
>
>
> Cheers,
> Todd
>
> jay wrote:
> > Thanks Todd.  Its interesting that I was connected to an ssh server on
> > port 22.  Nothing non standard about that.  Could this also be a timeout
> > related exception?  If the remote server is slow to respond?
> >
> > Jay
> >
> > On 8/7/07, *Todd Whiteman* <toddw at activestate.com
> > <mailto:toddw at activestate.com>> wrote:
> >
> >     Hi Jay,
> >
> >     You get this exception from connecting to a remote machine on a
> non-ssh
> >     port, so when Paramiko tries to read in the relevant SSH
> information, it
> >     fails and raises the SSHException you received.
> >
> >     A simple repro example is to try and connect to the ftp port (port
> 21)
> >     instead of the SSH port (port 22).
> >
> >     Cheers,
> >     Todd
> >
> >     jay wrote:
> >      > Hello,
> >      >
> >      > Like to start off saying paramiko is fantastic and has been a
> >     huge time
> >      > saver for me at work.  Thanks for the hard work!
> >      >
> >      > I got the following traceback and am unsure what the problem is.
> >      >
> >      > Traceback (most recent call last):
> >      >   File "ATM.py", line 115, in <module>
> >      >     t.connect(username=sftpRemoteUser,
> password=sftpRemotePassword)
> >      >   File
> >      >
> >
> "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
> >      > line 931, in connect
> >      >     self.start_client()
> >      >   File
> >      >
> >
> "/usr/local/python251/lib/python2.5/site-packages/paramiko/transport.py",
> >      > line 398, in start_client
> >      >     raise e
> >      > SSHException: Error reading SSH protocol banner
> >      >
> >      > I thought my code would catch all exceptions, but apparently
> >     not.  This
> >      > particular problem showed up inside this
> >      >
> >      > try:
> >      > except Exception, e:
> >      >
> >      > So, I would like to try and duplicate it, but I'm not even sure
> >     what the
> >      > problem was.  Any suggestions on how to duplicate this problem
> >     and make
> >      > sure the code catches it?  Thanks
> >      >
> >      >  Jay
> >      >
> >      >
> >      >
> >
> ------------------------------------------------------------------------
> >
> >      >
> >      > _______________________________________________
> >      > paramiko mailing list
> >      > paramiko at lag.net <mailto:paramiko at lag.net>
> >      > http://mail.lag.net/mailman/listinfo/paramiko
> >
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > paramiko mailing list
> > paramiko at lag.net
> > http://mail.lag.net/mailman/listinfo/paramiko
>
>
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From robey at lag.net  Sun Aug 12 22:39:39 2007
From: robey at lag.net (Robey Pointer)
Date: Sun, 12 Aug 2007 22:39:39 -0700
Subject: [paramiko] test message
Message-ID: <B0783B0E-71AD-44F7-98C1-68120C7B154F@lag.net>

I moved the mailing list over to a new machine.  Nothing should be  
different, except things might work better now. :)  I know some  
people were saying they were having trouble subscribing or  
unsubscribing.  If that's still true, please let me know and I'll  
debug it some more.

robey



From toon at warmerbythelake.com  Sun Aug 12 23:57:49 2007
From: toon at warmerbythelake.com (Tod D. Ihde)
Date: Mon, 13 Aug 2007 01:57:49 -0500
Subject: [paramiko] test message
In-Reply-To: <B0783B0E-71AD-44F7-98C1-68120C7B154F@lag.net>
References: <B0783B0E-71AD-44F7-98C1-68120C7B154F@lag.net>
Message-ID: <46C000ED.5070902@warmerbythelake.com>

Robey Pointer wrote:
> I moved the mailing list over to a new machine.
>  Nothing should be different, except things might work better now. :)

Oh, do I know THAT feeling! :)

>  I know some
> people were saying they were having trouble subscribing or  
> unsubscribing.  If that's still true, please let me know and I'll  
> debug it some more.
> 
> robey
> 

Yeah, I replied just to say that. Sorry. Hate me if you like :)

 Tod.


From caleb at szatan.net  Sat Aug 18 10:40:45 2007
From: caleb at szatan.net (caleb at szatan.net)
Date: Sat, 18 Aug 2007 19:40:45 +0200 (CEST)
Subject: [paramiko] simple ssh server
Message-ID: <54525.157.158.0.30.1187458845.squirrel@jeremy.reps.pl>

Hello

i've got a simple problem. Just i wrote a simple client with paramiko like
this:


> import paramiko , getpass
> user=raw_input('username: ')
> pass=getpass.getpass('password: ')
> client = paramiko.SSHClient()
> client.load_system_host_keys()
> client.connect('localhost',port=2200,username=user,password=pass)
command=""
> while command != 'exit':
>         command=raw_input('prompt: ')
>         stdin,stdout,stderr=client.exec_command(command)
>         for line in stdout:
>                 print line.strip('\n')
>         for line in stderr:
>                 if line:
>                         print line.strip('\n')
> client.close()
>
It works perfectly with standard OpenSSH server and similar. But I have to
write my simple ssh server
which it'll be working with this client. Examples included in Paramiko
package maybe are too complicated for me,
because i went to the dead end.. :)
Is there any possibilities to someone show me a solution of this problem?

please Help...

Caleb








From caleb at szatan.net  Sat Aug 18 10:36:12 2007
From: caleb at szatan.net (caleb at szatan.net)
Date: Sat, 18 Aug 2007 19:36:12 +0200 (CEST)
Subject: [paramiko] simple ssh server
Message-ID: <58976.157.158.0.30.1187458572.squirrel@jeremy.reps.pl>

Hello

i've got a simple problem. Just i wrote a simple client with paramiko like
this:


> import paramiko , getpass
> user=raw_input('username: ')
> pass=getpass.getpass('password: ')
> client = paramiko.SSHClient()
> client.load_system_host_keys()
> client.connect('localhost',port=2200,username=user,password=pass)
command=""
> while command != 'exit':
>         command=raw_input('prompt: ')
>         stdin,stdout,stderr=client.exec_command(command)
>         for line in stdout:
>                 print line.strip('\n')
>         for line in stderr:
>                 if line:
>                         print line.strip('\n')
> client.close()
>
It works perfectly with standard OpenSSH server and similar. But I have to
write my simple ssh server
which it'll be working with this client. Examples included in Paramiko
package maybe are too complicated for me,
because i went to the dead end.. :)
Is there any possibilities to someone show me a solution of this problem?

please Help...

Caleb






From toddw at activestate.com  Mon Aug 20 10:25:37 2007
From: toddw at activestate.com (Todd Whiteman)
Date: Mon, 20 Aug 2007 10:25:37 -0700
Subject: [paramiko] simple ssh server
In-Reply-To: <58976.157.158.0.30.1187458572.squirrel@jeremy.reps.pl>
References: <58976.157.158.0.30.1187458572.squirrel@jeremy.reps.pl>
Message-ID: <46C9CE91.3080507@activestate.com>

Hi Caleb,

It's likely because your trying to use the Python keyword "pass" when 
trying to store the password, which would give a "Syntax Error", use:

password=getpass.getpass('password: ')
client.connect('localhost',port=2200,username=user,password=password)

Cheers,
Todd

caleb at szatan.net wrote:
> Hello
> 
> i've got a simple problem. Just i wrote a simple client with paramiko like
> this:
> 
> 
>> import paramiko , getpass
>> user=raw_input('username: ')
>> pass=getpass.getpass('password: ')
>> client = paramiko.SSHClient()
>> client.load_system_host_keys()
>> client.connect('localhost',port=2200,username=user,password=pass)
> command=""
>> while command != 'exit':
>>         command=raw_input('prompt: ')
>>         stdin,stdout,stderr=client.exec_command(command)
>>         for line in stdout:
>>                 print line.strip('\n')
>>         for line in stderr:
>>                 if line:
>>                         print line.strip('\n')
>> client.close()
>>
> It works perfectly with standard OpenSSH server and similar. But I have to
> write my simple ssh server
> which it'll be working with this client. Examples included in Paramiko
> package maybe are too complicated for me,
> because i went to the dead end.. :)
> Is there any possibilities to someone show me a solution of this problem?
> 
> please Help...
> 
> Caleb
> 



From caleb at szatan.net  Mon Aug 20 15:44:39 2007
From: caleb at szatan.net (caleb at szatan.net)
Date: Tue, 21 Aug 2007 00:44:39 +0200 (CEST)
Subject: [paramiko] simple ssh server
Message-ID: <46429.157.158.0.30.1187649879.squirrel@jeremy.reps.pl>

Hi.

You misunderstood me :) unfortunately.

i know that "pass" word is a Python word.
My version of client working with OpenSSH server and similar.
I've got problems with writing simple paramiko ssh server which it'll be
compatible with this client. Please give me an example or a hint to solve.


cheers.

Caleb



From toddw at activestate.com  Mon Aug 20 16:24:33 2007
From: toddw at activestate.com (Todd Whiteman)
Date: Mon, 20 Aug 2007 16:24:33 -0700
Subject: [paramiko] simple ssh server
In-Reply-To: <46429.157.158.0.30.1187649879.squirrel@jeremy.reps.pl>
References: <46429.157.158.0.30.1187649879.squirrel@jeremy.reps.pl>
Message-ID: <46CA22B1.5030201@activestate.com>

Hi Caleb,

You still do not state what the problem is with writing the ssh server?

Paramiko does provide many examples for writing your own SSH server 
(demos and test cases). Download the paramiko package, extract the files 
and take a look at the following:
   demos/demo_server.py
   tests/*

Basically, you'll need to create a socket server that accepts 
connections and implements the "paramiko.ServerInterface" interface.

Cheers,
Todd

caleb at szatan.net wrote:
> Hi.
> 
> You misunderstood me :) unfortunately.
> 
> i know that "pass" word is a Python word.
> My version of client working with OpenSSH server and similar.
> I've got problems with writing simple paramiko ssh server which it'll be
> compatible with this client. Please give me an example or a hint to solve.
> 
> 
> cheers.
> 
> Caleb
> 


From jdsw2002 at yahoo.com  Mon Aug 27 12:05:20 2007
From: jdsw2002 at yahoo.com (jd)
Date: Mon, 27 Aug 2007 12:05:20 -0700 (PDT)
Subject: [paramiko] Intermittent problem (no attachments)
Message-ID: <789083.6587.qm@web35815.mail.mud.yahoo.com>

Hi
  I had sent this email, but is waiting for approval
as the attached sources seems to cross the limit of
the distribution list. 
  Can the owner kindly approve the message with files.
  does anyone have tips/pointers to resolve this ?
Thanks
/Jd

--- jd <jdsw2002 at yahoo.com> wrote:

> Hi Everyone.
>    I have written a ssh tunnel transport for
> XML-RPC.
> It seems to work pretty good, but has intermittent
> failures. 
> 
>  It seems that the client/parser missed the first
> chunk of data from the server.
> 
>   This does not happen when I use the normal xml-rpc
> over http. so I am assuming that the server is ok.
> 
>  Attached is test program that reproduces the
> problem.
> Environment is  FC7, python 2.5,
> python-paramiko-1.6.4-1.fc7, Xen 3.1
> 
> Can someone spot something wrong which might be
> causing this ? Or some paramiko tweak that might be
> useful in this scenario.
> 
> Any other ideas on how to narrow down the problem
> are
> welcome. 
> 
> Thanks
> /Jd
> 
> === Attached description of files ===
> phelper.py : Just some utility wrapper over paramiko
> lib.
> test_proxy.py : simple driver program that
> reproduces
> the problem. 
> test_output : output : 2 out of N tries succeed.
> XenServreProxy.py : Proxy that implements the
> paramiko
> transport for XML-RPC.
> 
> 
> 
> 
> 
>        
>
____________________________________________________________________________________
> Sick sense of humor? Visit Yahoo! TV's 
> Comedy with an Edge to see what's on, when. 
> http://tv.yahoo.com/collections/222> #!/usr/bin/env
python
> #
> #   XenMan   -  Copyright (c) 2007 Jd & Hap Hazard
> #   ======
> #
> # XenMan is a Xen management tool with a GTK based
> graphical interface
> # that allows for performing the standard set of
> domain operations
> # (start, stop, pause, kill, shutdown, reboot,
> snapshot, etc...). It
> # also attempts to simplify certain aspects such as
> the creation of
> # domains, as well as making the consoles available
> directly within the
> # tool's user interface.
> #
> #
> # This software is subject to the GNU Lesser General
> Public License (LGPL)
> # and for details, please consult it at:
> #
> #    http://www.fsf.org/licensing/licenses/lgpl.txt
> #
> # author : Jd <jd_jedi at users.sourceforge.net>
> #
> 
> import paramiko
> from paramiko import SSHException
> import os, sys
> import getpass
> import socket
> 
> """Paramiko helper class. Provides common functions
> as
>    -- validating host keys,
>    -- initializing a new transport,
>    -- agent based and password based authentication
> etc.
> """
> class HostValidationException(Exception):
>     def __init__(self, errno, description):
>         self.errno = errno
>         self.description = description
> 
>     def __repr__(self):
>         return "[Error %s], %s" % (self.errno,
> self.description)
> 
>     def __str__(self):
>         return self.__repr__()
> 
> class AuthenticationException(Exception):
>     def __init__(self, errno, description):
>         self.errno = errno
>         self.description = description
> 
>     def __repr__(self):
>         return "[Error %s], %s" % (self.errno,
> self.description)
>     
>     def __str__(self):
>         return self.__repr__()
> 
> 
> class CommunicationException(Exception):
>     def __init__(self, errno, description):
>         self.errno = errno
>         self.description = description
> 
>     def __repr__(self):
>         return "[Error %s], %s" % (self.errno,
> self.description)
> 
>     def __str__(self):
>         return self.__repr__()
>     
> 
> 
> class PHelper:
>     
>     host_keys = {}
> 
>     # credential helper
>     credentials_helper = None
> 
>     ## The credendital helper needs to
> get_credentials(hostname) method
>     ## to return credentials
>     ## the object returned should:
>     ##    get_username() and get_password() methods
>     ## This would be used when the transport can not
> be initialized
>     ## using given methods
>     
>     @classmethod
>     def set_credentials_helper(cls, cred_helper):
>         """ Set the helper class"""
>         cls.credentials_helper = cred_helper
> 
>         
>     @classmethod
>     def load_keys(cls):
>         # TODO : May be we need to load
> /etc/ssh/known_hosts and merge it here.
>         try:
>             path =
> os.path.expanduser('~/.ssh/known_hosts')
>             cls.host_keys =
> paramiko.util.load_host_keys(path)
>         except IOError:
>             try:
>                 path =
> os.path.expanduser('~/ssh/known_hosts')
>                 cls.host_keys =
> paramiko.util.load_host_keys(path)
>             except IOError:
>                 pass
> 
> 
>     @classmethod
>     def init_log(cls,log_file_name):
>         paramiko.util.log_to_file(log_file_name)
> 
> 
>     @classmethod
>     def validate_host_key(cls, transport, hostname):
>         """
>         get the remote hosts key and validate
> against known host keys
>         throws exception with errno, reason
>         errno - reason
>         1  - Host not found
>         2. - Host found but key not found
>         3  - Authentication failed (wrong password?)
>         4  - Host found, key found, but keys do not
> match
>              (server changed/spoofed)
>         """
>         # check server's host key -- this is
> important.
>         key = transport.get_remote_server_key()
>         if not PHelper.host_keys.has_key(hostname):
>             print "Warning : Host not found ! ",
> hostname
>             #raise HostValidationException(1, "Host
> not found")
>         elif not
> PHelper.host_keys[hostname].has_key(key.get_name()):
>             print "Warning: Key not found ! ",
> hostname
>             #raise HostValidationException(2, "Key
> not found.")
>         elif
> PHelper.host_keys[hostname][key.get_name()] != key:
>             raise HostValidationException(3, "Keys
> mismatch for " + hostname)
>         
>         return True
> 
> 
>     ## TODO : only for testing purpose
>     @classmethod        
>     def interactive_auth(cls, transport, username,
> hostname):
>         default_auth = 'p'
>         auth = raw_input('Auth by (p)assword, (r)sa
> key, or (d)ss key? [%s] ' % default_auth)
>         if len(auth) == 0:
>             auth = default_auth
> 
>         if auth == 'r':
>             default_path =
> os.path.join(os.environ['HOME'], '.ssh', 'id_rsa')
>             path = raw_input('RSA key [%s]: ' %
> default_path)
>             if len(path) == 0:
>                 path = default_path
>             try:
>                 key =
> paramiko.RSAKey.from_private_key_file(path)
>             except
> paramiko.PasswordRequiredException:
>                 password = getpass.getpass('RSA key
> password: ')
>                 key =
> paramiko.RSAKey.from_private_key_file(path,
> password)
>             transport.auth_publickey(username, key)
>         elif auth == 'd':
>             default_path =
> os.path.join(os.environ['HOME'], '.ssh', 'id_dsa')
>             path = raw_input('DSS key [%s]: ' %
> default_path)
>             if len(path) == 0:
>                 path = default_path
>             try:
>                 key =
> paramiko.DSSKey.from_private_key_file(path)
>             except
> paramiko.PasswordRequiredException:
> 
=== message truncated ===> # This is a test program
that reproduces the xml-rpc
> over ssh_tunnel using
> # paramiko.
> 
> # The program works always when the protocol is
> 'http' (python xml-rpc) 
> # but produces parsing errors when 'ssh_tunnel' is
> used.
> 
> # It seems that the client/parser is missing
> first/some chunks 
> # and tries to parse from somewhere in the middle
> producing the exception.
> 
> # requires xen-utils / xen setup on the client
> # requires xen setup on the server.
> 
> from XenServerProxy import ServerProxy,
> SSHTunnelTransport 
> from phelper import PHelper
> import sys, traceback
> 
> host = "192.168.12.103"
> port = 8006
> username = 'root'
> password = "password"
> protocol = "ssh_tunnel"  # "http" or "ssh_tunnel"
> 
> if True: # interactive
>     print "Host name : [" ,  host , "]"
>     res = sys.stdin.readline()    
>     if (res.strip() != ''):
>         host = res.strip()
> 
> 
> 
>     print "Port to tunnel to  : [" ,  port , "]"
>     res = sys.stdin.readline()    
>     if (res.strip() != ''):
>         port = int(res.strip())
> 
> 
>     print "User name : [" ,  username , "]"
>     res = sys.stdin.readline()    
>     if (res.strip() != ''):
>         username = res.strip()
> 
> 
>     print "Password : " 
>     res = sys.stdin.readline()    
>     if (res.strip() != ''):
>         password = res.strip()
> 
> 
>     print "Protocol : ssh_tunnel or http [" +
> protocol + "] " 
>     res = sys.stdin.readline()    
>     if (res.strip() != ''):
>         protocol = res.strip()
> 
> 
> ssh_transport = PHelper.init_ssh_transport(host,
>                                           
> username=username,
>                                           
> password=password)
> if protocol == "ssh_tunnel":
>     tunnel_transport = SSHTunnelTransport(host,
> port,
>                                          
> ssh_transport = ssh_transport,
>                                           ssh_port =
> 22)
> else:
>     tunnel_transport = None
> vmm = ServerProxy(protocol + '://' + username +
>                   '@' +
>                   host + ":" +
>                   str(port) +
>                   "/RPC2",
>                   password=password,
>                   transport=tunnel_transport
>                                       )    
> 
> while True:
>     try:
>         info = vmm.xend.domains()
>         print info
>     except Exception, ex:
>         print traceback.print_exc()
>         
>     print "Type q to quit, any other key to request
> again"
>     res = sys.stdin.readline()    
>     if (res.strip() == 'q'):
>         break
> 
> ssh_transport.close()
> 
> 
> 
>     
> > #!/usr/bin/env python
> #
> #   XenMan   -  Copyright (c) 2007 Jd & Hap Hazard
> #   ======
> #
> # XenMan is a Xen management tool with a GTK based
> graphical interface
> # that allows for performing the standard set of
> domain operations
> # (start, stop, pause, kill, shutdown, reboot,
> snapshot, etc...). It
> # also attempts to simplify certain aspects such as
> the creation of
> # domains, as well as making the consoles available
> directly within the
> # tool's user interface.
> #
> #
> # This software is subject to the GNU Lesser General
> Public License (LGPL)
> # and for details, please consult it at:
> #
> #    http://www.fsf.org/licensing/licenses/lgpl.txt
> #
> # author : Jd <jd_jedi at users.sourceforge.net>
> #
> 
> from  httplib import HTTPConnection, HTTP
> from  xmlrpclib import Transport
> 
> from SimpleXMLRPCServer import SimpleXMLRPCServer,
> SimpleXMLRPCRequestHandler
> import xmlrpclib, socket, os, stat
> import SocketServer
> 
> 
> import xen.xend.XendClient
> from xen.xend.XendLogging import log
> 
> 
> 
> try:
>    from xen.util.xmlrpcclient import ServerProxy
>    base_pkg = xen.util.xmlrpcclient
> except ImportError,e:
>    from xen.util.xmlrpclib2 import ServerProxy
>    base_pkg = xen.util.xmlrpclib2
>    
> from getpass import getuser
> 
> from phelper import PHelper
> import xml.parsers.expat   
> # A new ServerProxy that also supports ssh tunneling
> using paramiko. 
> # The ssh_tunnel URL comes in the
> # form:
> #
> # ssh_tunnel://user at host:port/RPC2
> #
> # It assumes that the RPC handler is /RPC2.  
> # This is implemented in a fashion similar to other
> transports in xmlrpcclient.
> # Note : This one does not require corresponding
> server side implementation
> #        as it uses the ssh tunneling mechanism. It
> would be nice though to
> #        have another paramiko based server
> implemeted and shipped by Xen
> #        to which we can directly connect.
> 
> 
> DEFAULT_LOCAL_PORT_START = 2000
> DEFAULT_LOCAL_PORT_END   = 2000
> 
> class SSHTunnelConnection(HTTPConnection):
>    def set_ssh_transport(self, ssh_transport):
>       self.ssh_transport = ssh_transport
> 
>    def set_local_port(self, localport):
>       self.localport = localport
> 
>    def connect(self):
>       # We already have a transport to the remote
> machine.
>       # lets create a tunnel on the remote node to
> forward traffic from
>       # localhost, localport  ==> localhost, xen
> port
>       # (NOTE : localhost is interpreted on the
> remote node.)
>       self.sock = 
> PHelper.open_channel(self.ssh_transport,
> "direct-tcpip",
>                                        
> ("localhost",self.port),
>                                        
> ("localhost",self.localport))
> 
> class SSHTunnel(HTTP):
>    
>     _connection_class = SSHTunnelConnection
>     
>     def __init__(self, ssh_transport, host='',
> port=None, strict=None,
>                 
> localport=DEFAULT_LOCAL_PORT_START):
>        self.localport = localport
>        self.ssh_transport = ssh_transport
>        HTTP.__init__(self, host, port, strict)
> 
>     # take this oppertunity to associate transport
> with the connection.
>     def _setup(self, conn):
>         HTTP._setup(self, conn)
>         conn.set_ssh_transport(self.ssh_transport)
>         conn.set_local_port(self.localport)
>     
> 
> 
> class SSHTunnelTransport(Transport):
> 
>     current_local_port = DEFAULT_LOCAL_PORT_START
>     _use_datetime = False
>       
>     def __init__(self,hostname,port,user=None,
> password=None,
>                  ssh_transport=None, ssh_port=22):
>        """ constructor, takes in host and port to
> which the tunnel
>            is to be opened. Assumes ssh on 22 for
> now.
>            An already authenticated paramiko
> transport can be passed.
>            It is assumed that the transport is to
> the same host as specified
>            by hostname.
>        """
>        self.hostname = hostname
>        self.ssh_port = ssh_port
>        self.username = user
>        self.port = port
>        self.transport_created=False
>        if ssh_transport == None:
>           self.transport =
> PHelper.init_ssh_transport(self.hostname,
>                                                     
>  self.ssh_port,
>                                                     
>  username=self.username,
>                                                     
>  password = password)
>           self.transport_created=True
>        else:
>           self.transport = ssh_transport
> 
>           
>     def request(self, host, handler, request_body,
> verbose=0):
>         self.__handler = handler
>         return Transport.request(self, host,
> '/RPC2', request_body, verbose)
> 
>     def make_connection(self, host):
>        """ return the connection paramiko connection
> object """
>        SSHTunnelTransport.current_local_port += 1
>        if SSHTunnelTransport.current_local_port >=
> DEFAULT_LOCAL_PORT_END:
>           SSHTunnelTransport.current_local_port =
> DEFAULT_LOCAL_PORT_START
>           
>        return SSHTunnel(self.transport,host,
>                        
> localport=SSHTunnelTransport.current_local_port)
> 
> 
>     def cleanup(self):
>        """ clean up transport if we created it."""
>        if self.transport != None and
> self.transport_created:
>           self.transport.close()
>             
> 
> 
> ## copied _Method from xmlrpc and 
> class _Dispatcher:
>   # some magic to bind an XML-RPC method to an RPC
> server.
>   # supports "nested" methods (e.g.
> examples.getStateName)
>   def __init__(self, orig_object, send, name):
>      self.__send = send
>      self.__name = name
>      self.__orig_object = orig_object
>   def __getattr__(self, name):
>      return _Dispatcher(self.__orig_object,
>                         self.__send, "%s.%s" %
> (self.__name, name))
>   def __call__(self, *args):
>      try:
>         ret = self.__send(self.__name, args)
> 
=== message truncated ===



      ____________________________________________________________________________________
Fussy? Opinionated? Impossible to please? Perfect.  Join Yahoo!'s user panel and lay it on us. http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 



From toddw at activestate.com  Mon Aug 27 13:07:48 2007
From: toddw at activestate.com (Todd Whiteman)
Date: Mon, 27 Aug 2007 13:07:48 -0700
Subject: [paramiko] Intermittent problem (no attachments)
In-Reply-To: <789083.6587.qm@web35815.mail.mud.yahoo.com>
References: <789083.6587.qm@web35815.mail.mud.yahoo.com>
Message-ID: <46D32F14.8070506@activestate.com>

Hi Jd,

First off, does this problem also exist when using the latest paramiko 
release (1.7.1):
http://www.lag.net/paramiko/

Todd.

jd wrote:
> Hi
>   I had sent this email, but is waiting for approval
> as the attached sources seems to cross the limit of
> the distribution list. 
>   Can the owner kindly approve the message with files.
>   does anyone have tips/pointers to resolve this ?
> Thanks
> /Jd
> 
> --- jd <jdsw2002 at yahoo.com> wrote:
> 
>> Hi Everyone.
>>    I have written a ssh tunnel transport for
>> XML-RPC.
>> It seems to work pretty good, but has intermittent
>> failures. 
>>
>>  It seems that the client/parser missed the first
>> chunk of data from the server.
>>
>>   This does not happen when I use the normal xml-rpc
>> over http. so I am assuming that the server is ok.
>>
>>  Attached is test program that reproduces the
>> problem.
>> Environment is  FC7, python 2.5,
>> python-paramiko-1.6.4-1.fc7, Xen 3.1
>>
>> Can someone spot something wrong which might be
>> causing this ? Or some paramiko tweak that might be
>> useful in this scenario.
>>
>> Any other ideas on how to narrow down the problem
>> are
>> welcome. 
>>
>> Thanks
>> /Jd
>>
>> === Attached description of files ===
>> phelper.py : Just some utility wrapper over paramiko
>> lib.
>> test_proxy.py : simple driver program that
>> reproduces
>> the problem. 
>> test_output : output : 2 out of N tries succeed.
>> XenServreProxy.py : Proxy that implements the
>> paramiko
>> transport for XML-RPC.
>>
>>
>>
>>
>>
>>        
>>
> ____________________________________________________________________________________
>> Sick sense of humor? Visit Yahoo! TV's 
>> Comedy with an Edge to see what's on, when. 
>> http://tv.yahoo.com/collections/222> #!/usr/bin/env
> python
>> #
>> #   XenMan   -  Copyright (c) 2007 Jd & Hap Hazard
>> #   ======
>> #
>> # XenMan is a Xen management tool with a GTK based
>> graphical interface
>> # that allows for performing the standard set of
>> domain operations
>> # (start, stop, pause, kill, shutdown, reboot,
>> snapshot, etc...). It
>> # also attempts to simplify certain aspects such as
>> the creation of
>> # domains, as well as making the consoles available
>> directly within the
>> # tool's user interface.
>> #
>> #
>> # This software is subject to the GNU Lesser General
>> Public License (LGPL)
>> # and for details, please consult it at:
>> #
>> #    http://www.fsf.org/licensing/licenses/lgpl.txt
>> #
>> # author : Jd <jd_jedi at users.sourceforge.net>
>> #
>>
>> import paramiko
>> from paramiko import SSHException
>> import os, sys
>> import getpass
>> import socket
>>
>> """Paramiko helper class. Provides common functions
>> as
>>    -- validating host keys,
>>    -- initializing a new transport,
>>    -- agent based and password based authentication
>> etc.
>> """
>> class HostValidationException(Exception):
>>     def __init__(self, errno, description):
>>         self.errno = errno
>>         self.description = description
>>
>>     def __repr__(self):
>>         return "[Error %s], %s" % (self.errno,
>> self.description)
>>
>>     def __str__(self):
>>         return self.__repr__()
>>
>> class AuthenticationException(Exception):
>>     def __init__(self, errno, description):
>>         self.errno = errno
>>         self.description = description
>>
>>     def __repr__(self):
>>         return "[Error %s], %s" % (self.errno,
>> self.description)
>>     
>>     def __str__(self):
>>         return self.__repr__()
>>
>>
>> class CommunicationException(Exception):
>>     def __init__(self, errno, description):
>>         self.errno = errno
>>         self.description = description
>>
>>     def __repr__(self):
>>         return "[Error %s], %s" % (self.errno,
>> self.description)
>>
>>     def __str__(self):
>>         return self.__repr__()
>>     
>>
>>
>> class PHelper:
>>     
>>     host_keys = {}
>>
>>     # credential helper
>>     credentials_helper = None
>>
>>     ## The credendital helper needs to
>> get_credentials(hostname) method
>>     ## to return credentials
>>     ## the object returned should:
>>     ##    get_username() and get_password() methods
>>     ## This would be used when the transport can not
>> be initialized
>>     ## using given methods
>>     
>>     @classmethod
>>     def set_credentials_helper(cls, cred_helper):
>>         """ Set the helper class"""
>>         cls.credentials_helper = cred_helper
>>
>>         
>>     @classmethod
>>     def load_keys(cls):
>>         # TODO : May be we need to load
>> /etc/ssh/known_hosts and merge it here.
>>         try:
>>             path =
>> os.path.expanduser('~/.ssh/known_hosts')
>>             cls.host_keys =
>> paramiko.util.load_host_keys(path)
>>         except IOError:
>>             try:
>>                 path =
>> os.path.expanduser('~/ssh/known_hosts')
>>                 cls.host_keys =
>> paramiko.util.load_host_keys(path)
>>             except IOError:
>>                 pass
>>
>>
>>     @classmethod
>>     def init_log(cls,log_file_name):
>>         paramiko.util.log_to_file(log_file_name)
>>
>>
>>     @classmethod
>>     def validate_host_key(cls, transport, hostname):
>>         """
>>         get the remote hosts key and validate
>> against known host keys
>>         throws exception with errno, reason
>>         errno - reason
>>         1  - Host not found
>>         2. - Host found but key not found
>>         3  - Authentication failed (wrong password?)
>>         4  - Host found, key found, but keys do not
>> match
>>              (server changed/spoofed)
>>         """
>>         # check server's host key -- this is
>> important.
>>         key = transport.get_remote_server_key()
>>         if not PHelper.host_keys.has_key(hostname):
>>             print "Warning : Host not found ! ",
>> hostname
>>             #raise HostValidationException(1, "Host
>> not found")
>>         elif not
>> PHelper.host_keys[hostname].has_key(key.get_name()):
>>             print "Warning: Key not found ! ",
>> hostname
>>             #raise HostValidationException(2, "Key
>> not found.")
>>         elif
>> PHelper.host_keys[hostname][key.get_name()] != key:
>>             raise HostValidationException(3, "Keys
>> mismatch for " + hostname)
>>         
>>         return True
>>
>>
>>     ## TODO : only for testing purpose
>>     @classmethod        
>>     def interactive_auth(cls, transport, username,
>> hostname):
>>         default_auth = 'p'
>>         auth = raw_input('Auth by (p)assword, (r)sa
>> key, or (d)ss key? [%s] ' % default_auth)
>>         if len(auth) == 0:
>>             auth = default_auth
>>
>>         if auth == 'r':
>>             default_path =
>> os.path.join(os.environ['HOME'], '.ssh', 'id_rsa')
>>             path = raw_input('RSA key [%s]: ' %
>> default_path)
>>             if len(path) == 0:
>>                 path = default_path
>>             try:
>>                 key =
>> paramiko.RSAKey.from_private_key_file(path)
>>             except
>> paramiko.PasswordRequiredException:
>>                 password = getpass.getpass('RSA key
>> password: ')
>>                 key =
>> paramiko.RSAKey.from_private_key_file(path,
>> password)
>>             transport.auth_publickey(username, key)
>>         elif auth == 'd':
>>             default_path =
>> os.path.join(os.environ['HOME'], '.ssh', 'id_dsa')
>>             path = raw_input('DSS key [%s]: ' %
>> default_path)
>>             if len(path) == 0:
>>                 path = default_path
>>             try:
>>                 key =
>> paramiko.DSSKey.from_private_key_file(path)
>>             except
>> paramiko.PasswordRequiredException:
>>
> === message truncated ===> # This is a test program
> that reproduces the xml-rpc
>> over ssh_tunnel using
>> # paramiko.
>>
>> # The program works always when the protocol is
>> 'http' (python xml-rpc) 
>> # but produces parsing errors when 'ssh_tunnel' is
>> used.
>>
>> # It seems that the client/parser is missing
>> first/some chunks 
>> # and tries to parse from somewhere in the middle
>> producing the exception.
>>
>> # requires xen-utils / xen setup on the client
>> # requires xen setup on the server.
>>
>> from XenServerProxy import ServerProxy,
>> SSHTunnelTransport 
>> from phelper import PHelper
>> import sys, traceback
>>
>> host = "192.168.12.103"
>> port = 8006
>> username = 'root'
>> password = "password"
>> protocol = "ssh_tunnel"  # "http" or "ssh_tunnel"
>>
>> if True: # interactive
>>     print "Host name : [" ,  host , "]"
>>     res = sys.stdin.readline()    
>>     if (res.strip() != ''):
>>         host = res.strip()
>>
>>
>>
>>     print "Port to tunnel to  : [" ,  port , "]"
>>     res = sys.stdin.readline()    
>>     if (res.strip() != ''):
>>         port = int(res.strip())
>>
>>
>>     print "User name : [" ,  username , "]"
>>     res = sys.stdin.readline()    
>>     if (res.strip() != ''):
>>         username = res.strip()
>>
>>
>>     print "Password : " 
>>     res = sys.stdin.readline()    
>>     if (res.strip() != ''):
>>         password = res.strip()
>>
>>
>>     print "Protocol : ssh_tunnel or http [" +
>> protocol + "] " 
>>     res = sys.stdin.readline()    
>>     if (res.strip() != ''):
>>         protocol = res.strip()
>>
>>
>> ssh_transport = PHelper.init_ssh_transport(host,
>>                                           
>> username=username,
>>                                           
>> password=password)
>> if protocol == "ssh_tunnel":
>>     tunnel_transport = SSHTunnelTransport(host,
>> port,
>>                                          
>> ssh_transport = ssh_transport,
>>                                           ssh_port =
>> 22)
>> else:
>>     tunnel_transport = None
>> vmm = ServerProxy(protocol + '://' + username +
>>                   '@' +
>>                   host + ":" +
>>                   str(port) +
>>                   "/RPC2",
>>                   password=password,
>>                   transport=tunnel_transport
>>                                       )    
>>
>> while True:
>>     try:
>>         info = vmm.xend.domains()
>>         print info
>>     except Exception, ex:
>>         print traceback.print_exc()
>>         
>>     print "Type q to quit, any other key to request
>> again"
>>     res = sys.stdin.readline()    
>>     if (res.strip() == 'q'):
>>         break
>>
>> ssh_transport.close()
>>
>>
>>
>>     
>>> #!/usr/bin/env python
>> #
>> #   XenMan   -  Copyright (c) 2007 Jd & Hap Hazard
>> #   ======
>> #
>> # XenMan is a Xen management tool with a GTK based
>> graphical interface
>> # that allows for performing the standard set of
>> domain operations
>> # (start, stop, pause, kill, shutdown, reboot,
>> snapshot, etc...). It
>> # also attempts to simplify certain aspects such as
>> the creation of
>> # domains, as well as making the consoles available
>> directly within the
>> # tool's user interface.
>> #
>> #
>> # This software is subject to the GNU Lesser General
>> Public License (LGPL)
>> # and for details, please consult it at:
>> #
>> #    http://www.fsf.org/licensing/licenses/lgpl.txt
>> #
>> # author : Jd <jd_jedi at users.sourceforge.net>
>> #
>>
>> from  httplib import HTTPConnection, HTTP
>> from  xmlrpclib import Transport
>>
>> from SimpleXMLRPCServer import SimpleXMLRPCServer,
>> SimpleXMLRPCRequestHandler
>> import xmlrpclib, socket, os, stat
>> import SocketServer
>>
>>
>> import xen.xend.XendClient
>> from xen.xend.XendLogging import log
>>
>>
>>
>> try:
>>    from xen.util.xmlrpcclient import ServerProxy
>>    base_pkg = xen.util.xmlrpcclient
>> except ImportError,e:
>>    from xen.util.xmlrpclib2 import ServerProxy
>>    base_pkg = xen.util.xmlrpclib2
>>    
>> from getpass import getuser
>>
>> from phelper import PHelper
>> import xml.parsers.expat   
>> # A new ServerProxy that also supports ssh tunneling
>> using paramiko. 
>> # The ssh_tunnel URL comes in the
>> # form:
>> #
>> # ssh_tunnel://user at host:port/RPC2
>> #
>> # It assumes that the RPC handler is /RPC2.  
>> # This is implemented in a fashion similar to other
>> transports in xmlrpcclient.
>> # Note : This one does not require corresponding
>> server side implementation
>> #        as it uses the ssh tunneling mechanism. It
>> would be nice though to
>> #        have another paramiko based server
>> implemeted and shipped by Xen
>> #        to which we can directly connect.
>>
>>
>> DEFAULT_LOCAL_PORT_START = 2000
>> DEFAULT_LOCAL_PORT_END   = 2000
>>
>> class SSHTunnelConnection(HTTPConnection):
>>    def set_ssh_transport(self, ssh_transport):
>>       self.ssh_transport = ssh_transport
>>
>>    def set_local_port(self, localport):
>>       self.localport = localport
>>
>>    def connect(self):
>>       # We already have a transport to the remote
>> machine.
>>       # lets create a tunnel on the remote node to
>> forward traffic from
>>       # localhost, localport  ==> localhost, xen
>> port
>>       # (NOTE : localhost is interpreted on the
>> remote node.)
>>       self.sock = 
>> PHelper.open_channel(self.ssh_transport,
>> "direct-tcpip",
>>                                        
>> ("localhost",self.port),
>>                                        
>> ("localhost",self.localport))
>>
>> class SSHTunnel(HTTP):
>>    
>>     _connection_class = SSHTunnelConnection
>>     
>>     def __init__(self, ssh_transport, host='',
>> port=None, strict=None,
>>                 
>> localport=DEFAULT_LOCAL_PORT_START):
>>        self.localport = localport
>>        self.ssh_transport = ssh_transport
>>        HTTP.__init__(self, host, port, strict)
>>
>>     # take this oppertunity to associate transport
>> with the connection.
>>     def _setup(self, conn):
>>         HTTP._setup(self, conn)
>>         conn.set_ssh_transport(self.ssh_transport)
>>         conn.set_local_port(self.localport)
>>     
>>
>>
>> class SSHTunnelTransport(Transport):
>>
>>     current_local_port = DEFAULT_LOCAL_PORT_START
>>     _use_datetime = False
>>       
>>     def __init__(self,hostname,port,user=None,
>> password=None,
>>                  ssh_transport=None, ssh_port=22):
>>        """ constructor, takes in host and port to
>> which the tunnel
>>            is to be opened. Assumes ssh on 22 for
>> now.
>>            An already authenticated paramiko
>> transport can be passed.
>>            It is assumed that the transport is to
>> the same host as specified
>>            by hostname.
>>        """
>>        self.hostname = hostname
>>        self.ssh_port = ssh_port
>>        self.username = user
>>        self.port = port
>>        self.transport_created=False
>>        if ssh_transport == None:
>>           self.transport =
>> PHelper.init_ssh_transport(self.hostname,
>>                                                     
>>  self.ssh_port,
>>                                                     
>>  username=self.username,
>>                                                     
>>  password = password)
>>           self.transport_created=True
>>        else:
>>           self.transport = ssh_transport
>>
>>           
>>     def request(self, host, handler, request_body,
>> verbose=0):
>>         self.__handler = handler
>>         return Transport.request(self, host,
>> '/RPC2', request_body, verbose)
>>
>>     def make_connection(self, host):
>>        """ return the connection paramiko connection
>> object """
>>        SSHTunnelTransport.current_local_port += 1
>>        if SSHTunnelTransport.current_local_port >=
>> DEFAULT_LOCAL_PORT_END:
>>           SSHTunnelTransport.current_local_port =
>> DEFAULT_LOCAL_PORT_START
>>           
>>        return SSHTunnel(self.transport,host,
>>                        
>> localport=SSHTunnelTransport.current_local_port)
>>
>>
>>     def cleanup(self):
>>        """ clean up transport if we created it."""
>>        if self.transport != None and
>> self.transport_created:
>>           self.transport.close()
>>             
>>
>>
>> ## copied _Method from xmlrpc and 
>> class _Dispatcher:
>>   # some magic to bind an XML-RPC method to an RPC
>> server.
>>   # supports "nested" methods (e.g.
>> examples.getStateName)
>>   def __init__(self, orig_object, send, name):
>>      self.__send = send
>>      self.__name = name
>>      self.__orig_object = orig_object
>>   def __getattr__(self, name):
>>      return _Dispatcher(self.__orig_object,
>>                         self.__send, "%s.%s" %
>> (self.__name, name))
>>   def __call__(self, *args):
>>      try:
>>         ret = self.__send(self.__name, args)
>>
> === message truncated ===
> 
> 
> 
>       ____________________________________________________________________________________
> Fussy? Opinionated? Impossible to please? Perfect.  Join Yahoo!'s user panel and lay it on us. http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 
> 
> 
> _______________________________________________
> paramiko mailing list
> paramiko at www.lag.net
> http://www.lag.net/cgi-bin/mailman/listinfo/paramiko
> 



From jdsw2002 at yahoo.com  Mon Aug 27 23:13:24 2007
From: jdsw2002 at yahoo.com (jd)
Date: Mon, 27 Aug 2007 23:13:24 -0700 (PDT)
Subject: [paramiko] Intermittent problem (no attachments)
In-Reply-To: <46D32F14.8070506@activestate.com>
Message-ID: <717504.91295.qm@web35812.mail.mud.yahoo.com>

Got the latest 1.7.1 tar ball. Replaced paramiko dir
under python2.4/site-packages/paramiko with the tar
content (on this machine I have python 2.4)

Still the problem reproduces.
/Jd
--- Todd Whiteman <toddw at activestate.com> wrote:

> Hi Jd,
> 
> First off, does this problem also exist when using
> the latest paramiko 
> release (1.7.1):
> http://www.lag.net/paramiko/
> 
> Todd.
> 
> jd wrote:
> > Hi
> >   I had sent this email, but is waiting for
> approval
> > as the attached sources seems to cross the limit
> of
> > the distribution list. 
> >   Can the owner kindly approve the message with
> files.
> >   does anyone have tips/pointers to resolve this ?
> > Thanks
> > /Jd
> > 
> > --- jd <jdsw2002 at yahoo.com> wrote:
> > 
> >> Hi Everyone.
> >>    I have written a ssh tunnel transport for
> >> XML-RPC.
> >> It seems to work pretty good, but has
> intermittent
> >> failures. 
> >>
> >>  It seems that the client/parser missed the first
> >> chunk of data from the server.
> >>
> >>   This does not happen when I use the normal
> xml-rpc
> >> over http. so I am assuming that the server is
> ok.
> >>
> >>  Attached is test program that reproduces the
> >> problem.
> >> Environment is  FC7, python 2.5,
> >> python-paramiko-1.6.4-1.fc7, Xen 3.1
> >>
> >> Can someone spot something wrong which might be
> >> causing this ? Or some paramiko tweak that might
> be
> >> useful in this scenario.
> >>
> >> Any other ideas on how to narrow down the problem
> >> are
> >> welcome. 
> >>
> >> Thanks
> >> /Jd
> >>
> >> === Attached description of files ===
> >> phelper.py : Just some utility wrapper over
> paramiko
> >> lib.
> >> test_proxy.py : simple driver program that
> >> reproduces
> >> the problem. 
> >> test_output : output : 2 out of N tries succeed.
> >> XenServreProxy.py : Proxy that implements the
> >> paramiko
> >> transport for XML-RPC.
> >>
> >>
> >>
> >>
> >>
> >>        
> >>
> >
>
____________________________________________________________________________________
> >> Sick sense of humor? Visit Yahoo! TV's 
> >> Comedy with an Edge to see what's on, when. 
> >> http://tv.yahoo.com/collections/222>
> #!/usr/bin/env
> > python
> >> #
> >> #   XenMan   -  Copyright (c) 2007 Jd & Hap
> Hazard
> >> #   ======
> >> #
> >> # XenMan is a Xen management tool with a GTK
> based
> >> graphical interface
> >> # that allows for performing the standard set of
> >> domain operations
> >> # (start, stop, pause, kill, shutdown, reboot,
> >> snapshot, etc...). It
> >> # also attempts to simplify certain aspects such
> as
> >> the creation of
> >> # domains, as well as making the consoles
> available
> >> directly within the
> >> # tool's user interface.
> >> #
> >> #
> >> # This software is subject to the GNU Lesser
> General
> >> Public License (LGPL)
> >> # and for details, please consult it at:
> >> #
> >> #   
> http://www.fsf.org/licensing/licenses/lgpl.txt
> >> #
> >> # author : Jd <jd_jedi at users.sourceforge.net>
> >> #
> >>
> >> import paramiko
> >> from paramiko import SSHException
> >> import os, sys
> >> import getpass
> >> import socket
> >>
> >> """Paramiko helper class. Provides common
> functions
> >> as
> >>    -- validating host keys,
> >>    -- initializing a new transport,
> >>    -- agent based and password based
> authentication
> >> etc.
> >> """
> >> class HostValidationException(Exception):
> >>     def __init__(self, errno, description):
> >>         self.errno = errno
> >>         self.description = description
> >>
> >>     def __repr__(self):
> >>         return "[Error %s], %s" % (self.errno,
> >> self.description)
> >>
> >>     def __str__(self):
> >>         return self.__repr__()
> >>
> >> class AuthenticationException(Exception):
> >>     def __init__(self, errno, description):
> >>         self.errno = errno
> >>         self.description = description
> >>
> >>     def __repr__(self):
> >>         return "[Error %s], %s" % (self.errno,
> >> self.description)
> >>     
> >>     def __str__(self):
> >>         return self.__repr__()
> >>
> >>
> >> class CommunicationException(Exception):
> >>     def __init__(self, errno, description):
> >>         self.errno = errno
> >>         self.description = description
> >>
> >>     def __repr__(self):
> >>         return "[Error %s], %s" % (self.errno,
> >> self.description)
> >>
> >>     def __str__(self):
> >>         return self.__repr__()
> >>     
> >>
> >>
> >> class PHelper:
> >>     
> >>     host_keys = {}
> >>
> >>     # credential helper
> >>     credentials_helper = None
> >>
> >>     ## The credendital helper needs to
> >> get_credentials(hostname) method
> >>     ## to return credentials
> >>     ## the object returned should:
> >>     ##    get_username() and get_password()
> methods
> >>     ## This would be used when the transport can
> not
> >> be initialized
> >>     ## using given methods
> >>     
> >>     @classmethod
> >>     def set_credentials_helper(cls, cred_helper):
> >>         """ Set the helper class"""
> >>         cls.credentials_helper = cred_helper
> >>
> >>         
> >>     @classmethod
> >>     def load_keys(cls):
> >>         # TODO : May be we need to load
> >> /etc/ssh/known_hosts and merge it here.
> >>         try:
> >>             path =
> >> os.path.expanduser('~/.ssh/known_hosts')
> >>             cls.host_keys =
> >> paramiko.util.load_host_keys(path)
> >>         except IOError:
> 
=== message truncated ===



       
____________________________________________________________________________________
Choose the right car based on your needs.  Check out Yahoo! Autos new Car Finder tool.
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From robey at tavi.lag.net  Fri Aug 24 11:17:44 2007
From: robey at tavi.lag.net (Robey Pointer)
Date: Fri, 24 Aug 2007 11:17:44 -0700
Subject: [paramiko] Problem with authentification
In-Reply-To: <54e11fe0707250307m42b7c754m8988e695b0fbcf36@mail.gmail.com>
References: <54e11fe0707250307m42b7c754m8988e695b0fbcf36@mail.gmail.com>
Message-ID: <7FCF2DB0-729E-4FBB-8618-D57AFE2A722A@tavi.lag.net>


On 25 Jul 2007, at 3:07, Mykle wrote:

> Hi, I'm french so I apologize for mistakes I'm about to make with  
> english...
>
> I installed Paramiko on a Debian Server for making connections with  
> an SSH Server and here's my issue:
>
> I create a transport connection with the server for getting files  
> from it. The server asks an authentification but the public key is  
> kept by the SSH Server and recognize the computer by his public key  
> username at computername, the server have a username for the public  
> key. There's no password anyway ! Until now, I use a bash script  
> which make an ssh connection with the Server (like 'ssh -x -a  
> username at sshadress'), but I want to change that for some  
> verification reasons. I mustn't have to put any key in the code...  
> What I want is to connect to the Server and that this one accept  
> this connection by only the recognization of the  
> username at computername. The documentation doesn't really help me and  
> I'm not pretty much good in Python (maybe that explains why I'm  
> writing this mail...*sic*).
>
> Here's the begining of my code:
>
> import paramiko
> TR = paramiko.Transport((sshAdress,22))
> ...
>
> ... Yeah I know, it's like there was nothing...
>
> Thank you for your help.

It seems unlikely that you can login with *just* a username, but if  
you can, the call is:

     TR.auth_none('my_username')

More likely, ssh is using your private key to authenticate.  It  
automatically looks in your ~/.ssh/ folder for a private key and if  
it finds one, it uses it.

You may want to just use SSHClient:

     client = SSHClient()
     client.load_system_host_keys()
     client.connect('hostname', username='my_username')

which will look for a private key in the same way that 'ssh' does.   
Look in the docs for SSHClient for more info.

robey



From robey at tavi.lag.net  Fri Aug 24 11:08:25 2007
From: robey at tavi.lag.net (Robey Pointer)
Date: Fri, 24 Aug 2007 11:08:25 -0700
Subject: [paramiko] Testing an exception
In-Reply-To: <7c25bb490708080605u1ca27cacg623469be3b75d741@mail.gmail.com>
References: <7c25bb490708060713p1a5c38c3o9cad0530eac8351f@mail.gmail.com>
	<46B8AF40.5030003@activestate.com>
	<7c25bb490708071044h1cc186cdsc65eb5fccc973dc@mail.gmail.com>
	<46B91D36.3050501@activestate.com>
	<7c25bb490708080605u1ca27cacg623469be3b75d741@mail.gmail.com>
Message-ID: <D76A53CA-0E55-44CA-9156-5B41C83947CC@tavi.lag.net>


On 8 Aug 2007, at 6:05, jay wrote:

> That makes more sense.  The remote SSH server is VEEERY slow and  
> login times can exceed 1 minute sometimes.  Unfortunately, that  
> server is out of my control.

You should be able to extend that timeout by doing:

     t.banner_timeout = 120

(where 't' is your Transport).  120 would be 120 seconds or two  
minutes.  Now THAT is high latency! :)

robey



From robey at tavi.lag.net  Fri Aug 24 11:21:41 2007
From: robey at tavi.lag.net (Robey Pointer)
Date: Fri, 24 Aug 2007 11:21:41 -0700
Subject: [paramiko] Paramiko connection does not react well to sync
In-Reply-To: <067C9A1F6AFEB643895EA4513E116884B23A79@exfp1.Railpowertech.local>
References: <067C9A1F6AFEB643895EA4513E116884B23A79@exfp1.Railpowertech.local>
Message-ID: <EDE50997-2D1D-4A72-98C3-18E0D5A1BC66@tavi.lag.net>

On 24 Jul 2007, at 8:59, Matthews, James wrote:

> Greetings,
>
>             I have been furiously testing a Python (v2.4.3)  
> application built on wx.Python (v) that uses paramiko (v1.7) for an  
> SSH connection to essentially a ?bare-bones? Linux box running  
> dropbear (v0.49).  The setup was working great except for one  
> annoying bug that kept popping up in different locations.  Namely,  
> it appears to happen in very random places during a very long  
> process in which the application connects to the Linux box, moves a  
> few files around, updates the image on the box, and then mounts two  
> particular partitions to restore some files (namely for convenience  
> so I don?t have to do it manually after the image update).  Now the  
> problem appeared after somebody else went in and added some lines  
> of code which they thought would make this process more reliable.   
> I don?t know if this is exactly what was causing the problem, but  
> after weeks of debugging, tracing, and cursing I found what I  
> believe the problem to be.  Apparently, they had added a function  
> to open a new session to execute a Linux command on the box, which  
> just so happened to be the ?sync? command.  They had put this in  
> after every time I mounted a partition in order to access it, and  
> their comments said something along the lines of, ?#Make sure the  
> File System is aware?, or ?#Give the File System time before  
> accessing the file?.  It seems that around this command in the  
> code, the 10 second connection check would sense a downed connection.
>
>             I?m sorry for the length of this email, but basically  
> my question is? Is it even necessary to perform a ?sync? operation  
> after just a simple partition mount?  And further more, would it  
> make any sense for this to cause paramiko to close the Transport  
> unexpectedly?

Sorry for the late reply; I've been on vacation.

I can't think of a reason why a 'sync' would cause paramiko to  
disconnect.  But I also don't think it's necessary.  The 'mount'  
command should not complete until the filesystem is mounted.  Maybe  
someone else can correct me if I'm wrong.

robey



From bogus@does.not.exist.com  Fri Aug 17 14:01:08 2007
From: bogus@does.not.exist.com ()
Date: Fri, 17 Aug 2007 21:01:08 -0000
Subject: No subject
Message-ID: <mailman.0.1190223498.2304.paramiko@www.lag.net>

to execute command on the remote node.





       
____________________________________________________________________________________
Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.
http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow  
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