Persistent X - Revision history

Ajwt3 at 18:06, 16 June 2020

2020-06-16T18:06:57Z

← Older revision		Revision as of 18:06, 16 June 2020
Line 44:		Line 44:

	#First we need to call xauth which is no longer called when there's a .ssh/rc file. This allows X-forwarding, passing the cookie that ssh puts into STDIN into the ~/.Xauthority file.		#First we need to call xauth which is no longer called when there's a .ssh/rc file. This allows X-forwarding, passing the cookie that ssh puts into STDIN into the ~/.Xauthority file.
	~~xauth add $DISPLAY~~ `cat`		cookie=`cat`
			if [ "$DISPLAY" != "" -a "$cookie" != "" ]; then
			xauth add $DISPLAY $cookie
			fi

2020-06-16T17:50:49Z

← Older revision		Revision as of 17:50, 16 June 2020
Line 40:		Line 40:
	First, create (or append to) a <code>.ssh/rc</code> file with		First, create (or append to) a <code>.ssh/rc</code> file with

			<pre>
	#!/bin/bash		#!/bin/bash

	#First we need to call xauth which is no longer called when there's a .ssh/rc file. This allows X-forwarding, passing the cookie that ssh puts into STDIN into the ~/.Xauthority file.		#First we need to call xauth which is no longer called when there's a .ssh/rc file. This allows X-forwarding, passing the cookie that ssh puts into STDIN into the ~/.Xauthority file.
	xauth add $DISPLAY `cat`		xauth add $DISPLAY `cat`


	#Make a persistent ssh_auth socket		#Make a persistent ssh_auth socket
	if test "$SSH_AUTH_SOCK"; then		if test "$SSH_AUTH_SOCK"; then
	if [ ! -e "$SSH_AUTH_SOCK" ]; then		if [ ! -e "$SSH_AUTH_SOCK" ]; then
	ln -sf "SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock		ln -sf "SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock
	fi		fi
	fi		fi
			</pre>

	This will create a new link in <code>~/.ssh/ssh_auth_sock</code> which is updated whenever a new ssh logs in as you with agent forwarding, AND the existing link no longer exists.		This will create a new link in <code>~/.ssh/ssh_auth_sock</code> which is updated whenever a new ssh logs in as you with agent forwarding, AND the existing link no longer exists.

2020-06-16T17:44:28Z

← Older revision		Revision as of 17:44, 16 June 2020
Line 42:		Line 42:
	#!/bin/bash		#!/bin/bash

	#First we need to call xauth which is no-longer called when there's a .ssh/rc file. This allows x-forwarding, passing the cookie that ssh puts into STDIN into the ~/.~~XAuthority~~ file.		#First we need to call xauth which is no longer called when there's a .ssh/rc file. This allows X-forwarding, passing the cookie that ssh puts into STDIN into the ~/.Xauthority file.
	xauth add $DISPLAY `cat`		xauth add $DISPLAY `cat`

2020-06-16T17:42:17Z

← Older revision		Revision as of 17:42, 16 June 2020
Line 40:		Line 40:
	First, create (or append to) a <code>.ssh/rc</code> file with		First, create (or append to) a <code>.ssh/rc</code> file with

	#!/bin/bash		#!/bin/bash

	#First we need to call xauth which is no-longer called when there's a .ssh/rc file. This allows x-forwarding, passing the cookie that ssh puts into STDIN into the ~/.XAuthority file.		#First we need to call xauth which is no-longer called when there's a .ssh/rc file. This allows x-forwarding, passing the cookie that ssh puts into STDIN into the ~/.XAuthority file.
	xauth add $DISPLAY `cat`		xauth add $DISPLAY `cat`


	#Make a persistent ssh_auth socket		#Make a persistent ssh_auth socket
	if test "$SSH_AUTH_SOCK"; then		if test "$SSH_AUTH_SOCK"; then
	if [ ! -e "$SSH_AUTH_SOCK" ]; then		if [ ! -e "$SSH_AUTH_SOCK" ]; then
	ln -sf "SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock		ln -sf "SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock
	fi		fi
	fi		fi

	This will create a new link in <code>~/.ssh/ssh_auth_sock</code> which is updated whenever a new ssh logs in as you with agent forwarding, AND the existing link no longer exists.		This will create a new link in <code>~/.ssh/ssh_auth_sock</code> which is updated whenever a new ssh logs in as you with agent forwarding, AND the existing link no longer exists.

2020-06-16T17:41:10Z

← Older revision		Revision as of 17:41, 16 June 2020
Line 40:		Line 40:
	First, create (or append to) a <code>.ssh/rc</code> file with		First, create (or append to) a <code>.ssh/rc</code> file with

		⚫	#!/bin/bash
	<code>
⚫	\#!/bin/bash

	\#First we need to call xauth which is no-longer called when there's a .ssh/rc file. This allows x-forwarding, passing the cookie that ssh puts into STDIN into the ~/.XAuthority file.		#First we need to call xauth which is no-longer called when there's a .ssh/rc file. This allows x-forwarding, passing the cookie that ssh puts into STDIN into the ~/.XAuthority file.
	xauth add $DISPLAY `cat`		xauth add $DISPLAY `cat`

Line 53:		Line 52:
	fi		fi
	fi		fi
	</code>

	This will create a new link in <code>~/.ssh/ssh_auth_sock</code> which is updated whenever a new ssh logs in as you with agent forwarding, AND the existing link no longer exists.		This will create a new link in <code>~/.ssh/ssh_auth_sock</code> which is updated whenever a new ssh logs in as you with agent forwarding, AND the existing link no longer exists.

2020-06-16T17:33:53Z

@@ Line 41: / Line 41: @@
 <code>
-#!/bin/bash
+\#!/bin/bash
   fi
 </code>

2020-03-30T14:40:46Z

← Older revision		Revision as of 14:40, 30 March 2020
Line 44:		Line 44:
	#Make a persistent ssh_auth socket		#Make a persistent ssh_auth socket
	if test "$SSH_AUTH_SOCK"; then		if test "$SSH_AUTH_SOCK"; then
	if [ ! -L "$SSH_AUTH_SOCK" ]; then		if [ ! -e "$SSH_AUTH_SOCK" ]; then
	ln -sf "SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock		ln -sf "SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock
	fi		fi
Line 60:		Line 60:

	I have customised my sessions a little using:		I have customised my sessions a little using:

	<code>		<code>
	xpra start --ssh=autossh --sharing=yes --desktop-scaling=1446x2560 --border=lime,2 --env="SSH_AUTH_SOCK=/home/ajwt3/ssh-auth_sock" --start-child=xterm ssh:liminal		xpra start --ssh=autossh --sharing=yes --desktop-scaling=1446x2560 --border=lime,2 --env="SSH_AUTH_SOCK=/home/ajwt3/ssh-auth_sock" --start-child=xterm ssh:liminal

2020-03-27T18:16:39Z

← Older revision		Revision as of 18:16, 27 March 2020
Line 42:		Line 42:
	<code>		<code>
	#!/bin/bash		#!/bin/bash

	#Make a persistent ssh_auth socket		#Make a persistent ssh_auth socket
	if test "$SSH_AUTH_SOCK"; then		if test "$SSH_AUTH_SOCK"; then
Line 66:		Line 65:

	==Bugs==		==Bugs==
			Clipboards are not working consistently.
	<code>ssh-agent</code> key forwarding is not persistent currently.

2020-03-27T18:16:00Z

@@ Line 1: / Line 1: @@
 If your internet connection is a bit flaky, it can be a pain to ssh in again and re-create your work environment.  A combination of tmux, autossh and xpra saves the day.  Make sure tmux and xpra are installed on your department workstation, and autossh and xpra (and a shell and an X Server (e.g. if not using a linux box, Windows Subsystem for Linux running Ubuntu and VcXsrv)) are installed at home.
-Replace instances of WORKSTATION with your workstation name (e.g. hypatia).
+Replace instances of WORKSTATION with your workstation name (e.g. hypatia), and USER with your UserID
 This assumes you have setup a tunnel through citadel (via your .ssh/config) along with something like ssh-agent to handle automatic forwarding of keys, such that you can type
@@ Line 37: / Line 37: @@
 </code>
 ==Bugs==

2020-03-20T10:44:15Z

← Older revision		Revision as of 10:44, 20 March 2020
Line 38:		Line 38:

	tmux instructions to follow...		tmux instructions to follow...

			==Bugs==
			<code>ssh-agent</code> key forwarding is not persistent currently.