X user application fails come up but xclock and xterm come up

[Raju, Narendra]

   Thank you for your response. I did set X11UseLocalhost to yes. It work
only
if login as "spsy" user who is owner of user X application(the mode of
application is "
-rwsrwsr-x". If login as other user(who are have permission to exe) I ma not
able run X application.

Is SSH lose efffective user ID(EUID) of login user? 
I am using Hummingbird SSH client.


Thanks

Naren

 
-----Original Message-----
From: Ben Lindstrom [mailto:mouring at etoh.eviladmin.org]
Sent: Friday, June 25, 2004 2:02 PM
To: Raju, Narendra
Cc: 'openssh-unix-dev at mindrot.org'
Subject: RE: X user application fails come up but xclock and xterm come
up




On Fri, 25 Jun 2004, Raju, Narendra wrote:

>
> Hi ,
>
>    I open secure Session with X11 forwarding. when run any standard X
> applicattion like xterm xclock
> it come up without any error. I start my user X application it fails. On
> User application side it fails when
> "xtOpenDisplay" system call with localhost:10.0.
>

One of two things may be coming into play:

1. In your sshd_config:

     X11UseLocalhost
             Specifies whether sshd should bind the X11 forwarding server to
             the loopback address or to the wildcard address.

Which is defualted to 'yes'

2. In your ssh_config:

     ForwardX11Trusted
             If this option is set to ``yes'' then remote X11 clients will
             have full access to the original X11 display.

Which is defaulted to 'no'.

I suspect the former.. but the latter may soon follow.

- Ben


>  
> 
> Hi ,
> 
>    I open secure Session with X11 forwarding. when run any standard X
> applicattion like xterm xclock
> it come up without any error. I start my user X application it fails. On
> User application side it fails when
> "xtOpenDisplay" system call with localhost:10.0.
> 
> On SSH server debug message are :
> 
> 	debug1: X11 connection requested.
> 	debug2: fd 20 setting TCP_NODELAY
> 	debug2: fd 20 is O_NONBLOCK
> 	debug2: fd 20 is O_NONBLOCK
> 	debug1: channel 3: new [X11 connection from 127.0.0.1 port 47773]
> 	debug1: channel 3: open confirm rwindow 3000 rmax 35840
> 	debug1: server_input_channel_req: channel 3 request exit-status
> reply 0
> 	debug1: session_by_channel: unknown channel 3
> 	debug1: dump: used 1 session 0 2001c300 channel 0 pid 80374
> 	debug1: dump: used 0 session 0 2001c398 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c430 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c4c8 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c560 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c5f8 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c690 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c728 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c7c0 channel 0 pid 0
> 	debug1: dump: used 0 session 0 2001c858 channel 0 pid 0
> 	session_input_channel_req: no session 3 req exit-status
> 	debug1: channel 3: rcvd close
> 	debug1: channel 3: output open -> drain
> 	debug1: channel 3: close_read
> 	debug1: channel 3: input open -> closed
> 	debug3: channel 3: will not send data after close
> 	debug1: channel 3: obuf empty
> 	debug1: channel 3: close_write
> 	debug1: channel 3: output drain -> closed
> 	debug1: channel 3: send close
> 	debug1: channel 3: is dead
> 	debug1: channel 3: garbage collecting
> 	debug1: channel_free: channel 3: X11 connection from 127.0.0.1 port
> 47773, nchan
> 	nels 5
> 	debug3: channel_free: status: The following connections are
> open:\015
> 	  #0 server-session (t4 r0 i0/0 o0/0 fd 16/15)\015
> 	  #2 X11 connection from 127.0.0.1 port 47764 (t4 r1 i0/0 o0/0 fd
> 18/18)\015
> 	  #3 X11 connection from 127.0.0.1 port 47773 (t4 r7 i3/0 o3/0 fd
> 20/20)\015
> 	  #4 X11 connection from 127.0.0.1 port 47766 (t4 r3 i0/0 o0/0 fd
> 21/21)
> 
> 
> 
> 
> 	xClock  debug on SSH server
> 
> 	debug2: channel 4: rcvd adjust 3000
> 	debug2: channel 2: rcvd adjust 3000
> 	debug1: X11 connection requested.
> 	debug2: fd 20 setting TCP_NODELAY
> 	debug2: fd 20 is O_NONBLOCK
> 	debug2: fd 20 is O_NONBLOCK
> 	debug1: channel 3: new [X11 connection from 127.0.0.1 port 47828]
> 	debug1: channel 3: open confirm rwindow 3000 rmax 35840
> 	debug2: channel 2: rcvd adjust 3000
> 
> 	Thank you for your help 
> 	[Raju, Narendra]