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Subject: Bug#1348: ssh key discovery doesn't work with python-x2go
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From: Bill Carpenter <wjcarpenter@gmail.com>
Date: Sat, 24 Nov 2018 20:02:36 -0800
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Package: python-x2go
Version: 0.6.0.1-0~1415~ubuntu18.04.1


If a profile enables "Discover SSH keys or use SSH agent for X2Go
authentication" (that's from the PyHoca-GUI profile editor), then neither
pyhaca-gui nor pyhoca-cli can connect. The result is "pyhoca-cli: error: No
existing session". Explicitly specifying the SSH private key works. The
x2goclient (non-python) does not have this problem.

Here is some debug output of the failure.

wjc@nyuknyuk:~$ pyhoca-cli --libdebug -P stormy
pyhoca-cli[3957] NOTICE: preparing requested X2Go session
pyhoca-cli[3957] (PyHocaCLI) NOTICE: preparing requested X2Go session
pyhoca-cli[3957] (x2goinifiles-pylib) INFO: proposed config files are ['
*/home/wjc/*.x2goclient/sessions']
pyhoca-cli[3957] (x2goinifiles-pylib) INFO: config files found: ['
*/home/wjc/*.x2goclient/sessions']
pyhoca-cli[3957] (x2goinifiles-pylib) INFO: proposed config files are ['
*/home/wjc/*.x2goclient/settings']
pyhoca-cli[3957] (x2goinifiles-pylib) INFO: config files found: ['
*/home/wjc/*.x2goclient/settings']
pyhoca-cli[3957] (x2goinifiles-pylib) INFO: proposed config files are ['
*/home/wjc/*.x2goclient/printing']
pyhoca-cli[3957] (x2goinifiles-pylib) INFO: config files found: ['
*/home/wjc/*.x2goclient/printing']
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: X2Go control session parameters
for profile stormy:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     username: wjc
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     key_filename:
*/home/wjc/*.ssh/id_rsa

pyhoca-cli[3957] (x2gosession-pylib) DEBUG: unique_hostkey_aliases: False
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     look_for_keys: True
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     allow_agent: True
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: X2Go terminal session
parameters for profile stormy:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     client_encoding: ISO8859-1
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     set_session_title: False
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     snd_system: pulse
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     xinerama: False
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     server_encoding: UTF-8
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     kbtype: auto
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     rdp_server:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     snd_port: 4713
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     applications:
[u'WWWBROWSER', u'MAILCLIENT', u'OFFICE', u'TERMINAL']
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: published_applications: False
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     cmd: XFCE
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     link: lan
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     xdmcp_server: localhost
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     kbvariant: null
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     geometry: 1440x900
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     rdp_options:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     session_type: desktop
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     convert_encoding: False
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     clipboard: both
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     kblayout: us
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     session_title:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     dpi: 96
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     pack: 16m-jpeg-9
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: X2Go sshproxy parameters for
profile stormy:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: sshproxy_look_for_keys: False
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     sshproxy_host:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: sshproxy_key_filename:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     sshproxy_user:
pyhoca-cli[3957] (x2gosession-pylib) DEBUG:     sshproxy_port: 22
pyhoca-cli[3957] (x2gosession-pylib) DEBUG: initializing X2GoControlSession
pyhoca-cli[3957] (x2gosessregistry-pylib) NOTICE: registering X2Go session
stormy...
pyhoca-cli[3957] (x2gosessregistry-pylib) DEBUG: registering X2Go session
with UUID 3902ce3c-f052-11e8-8b86-94c6911c02ca
pyhoca-cli[3957] (x2goclient-pylib) NOTICE: initializing X2Go session...
pyhoca-cli[3957] (x2gocontrolsession-pylib) NOTICE: connecting to [
stormy.carpenter.org]:22
pyhoca-cli[3957] (x2gocontrolsession-pylib) DEBUG: trying SSH key discovery
or agent authentication with server
No handlers could be found for logger "paramiko.transport"
pyhoca-cli: error: No existing session
pyhoca-cli[3957] (x2goguardian-pylib) DEBUG: X2Go session guardian thread
waking up after 1 seconds
pyhoca-cli[3957] (x2goguardian-pylib) DEBUG: calling session cleanup on
profile stormy for terminal session:

--00000000000011b386057b754ae1
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Package: python-x2go
<br>Version: 0.6.0.1-0~1415~ubuntu18.04.1
<br>
<br>
<br>If a profile enables &quot;Discover SSH keys or use SSH agent for X2Go=
=20
authentication&quot; (that&#39;s from the PyHoca-GUI profile editor), then=
=20
neither pyhaca-gui nor pyhoca-cli can connect. The result is=20
&quot;pyhoca-cli: error: No existing session&quot;. Explicitly specifying t=
he SSH=20
private key works. The x2goclient (non-python) does not have this problem.
<br>
<br>Here is some debug output of the failure.
<br>
<br>wjc@nyuknyuk:~$ pyhoca-cli --libdebug -P stormy
<br>pyhoca-cli[3957] NOTICE: preparing requested X2Go session
<br>pyhoca-cli[3957] (PyHocaCLI) NOTICE: preparing requested X2Go session
<br>pyhoca-cli[3957] (x2goinifiles-pylib) INFO: proposed config files are=
=20
[&#39;<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/<=
/span>home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.x2goclient/ses=
sions&#39;]
<br>pyhoca-cli[3957] (x2goinifiles-pylib) INFO: config files found:=20
[&#39;<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/<=
/span>home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.x2goclient/ses=
sions&#39;]
<br>pyhoca-cli[3957] (x2goinifiles-pylib) INFO: proposed config files are=
=20
[&#39;<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/<=
/span>home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.x2goclient/set=
tings&#39;]
<br>pyhoca-cli[3957] (x2goinifiles-pylib) INFO: config files found:=20
[&#39;<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/<=
/span>home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.x2goclient/set=
tings&#39;]
<br>pyhoca-cli[3957] (x2goinifiles-pylib) INFO: proposed config files are=
=20
[&#39;<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/<=
/span>home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.x2goclient/pri=
nting&#39;]
<br>pyhoca-cli[3957] (x2goinifiles-pylib) INFO: config files found:=20
[&#39;<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/<=
/span>home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.x2goclient/pri=
nting&#39;]
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: X2Go control session=20
parameters for profile stormy:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 use=
rname: wjc
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 key=
_filename:=20
<i class=3D"gmail-moz-txt-slash"><span class=3D"gmail-moz-txt-tag">/</span>=
home/wjc<span class=3D"gmail-moz-txt-tag">/</span></i>.ssh/id_rsa
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: unique_hostkey_aliases: Fal=
se
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 loo=
k_for_keys: True
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 all=
ow_agent: True
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: X2Go terminal session=20
parameters for profile stormy:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 cli=
ent_encoding: ISO8859-1
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 set=
_session_title: False
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 snd=
_system: pulse
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 xin=
erama: False
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 ser=
ver_encoding: UTF-8
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 kbt=
ype: auto
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 rdp=
_server:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 snd=
_port: 4713
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 app=
lications:=20
[u&#39;WWWBROWSER&#39;, u&#39;MAILCLIENT&#39;, u&#39;OFFICE&#39;, u&#39;TER=
MINAL&#39;]
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: published_applications: Fal=
se
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 cmd=
: XFCE
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 lin=
k: lan
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 xdm=
cp_server: localhost
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 kbv=
ariant: null
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 geo=
metry: 1440x900
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 rdp=
_options:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 ses=
sion_type: desktop
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 con=
vert_encoding: False
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 cli=
pboard: both
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 kbl=
ayout: us
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 ses=
sion_title:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 dpi=
: 96
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 pac=
k: 16m-jpeg-9
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: X2Go sshproxy parameters fo=
r=20
profile stormy:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: sshproxy_look_for_keys: Fal=
se
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 ssh=
proxy_host:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: sshproxy_key_filename:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 ssh=
proxy_user:
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG:=C2=A0=C2=A0=C2=A0=C2=A0 ssh=
proxy_port: 22
<br>pyhoca-cli[3957] (x2gosession-pylib) DEBUG: initializing X2GoControlSes=
sion
<br>pyhoca-cli[3957] (x2gosessregistry-pylib) NOTICE: registering X2Go=20
session stormy...
<br>pyhoca-cli[3957] (x2gosessregistry-pylib) DEBUG: registering X2Go=20
session with UUID 3902ce3c-f052-11e8-8b86-94c6911c02ca
<br>pyhoca-cli[3957] (x2goclient-pylib) NOTICE: initializing X2Go session..=
.
<br>pyhoca-cli[3957] (x2gocontrolsession-pylib) NOTICE: connecting to=20
[<a href=3D"http://stormy.carpenter.org">stormy.carpenter.org</a>]:22
<br>pyhoca-cli[3957] (x2gocontrolsession-pylib) DEBUG: trying SSH key=20
discovery or agent authentication with server
<br>No handlers could be found for logger &quot;paramiko.transport&quot;
<br>pyhoca-cli: error: No existing session
<br>pyhoca-cli[3957] (x2goguardian-pylib) DEBUG: X2Go session guardian=20
thread waking up after 1 seconds
<br>pyhoca-cli[3957] (x2goguardian-pylib) DEBUG: calling session cleanup on=
=20
profile stormy for terminal session:=C2=A0<br><div><br></div></div>

--00000000000011b386057b754ae1--