Difference between revisions of "OpenVistA-CIS client package"

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(→‎SSH tunnel using a key pair)
(→‎SSH tunnel using a key pair)
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:*Uncomment the line (i.e. remove the # at the beginning of the line):
 
:*Uncomment the line (i.e. remove the # at the beginning of the line):
−
  #AuthorizedKeysFile %h/.ssh/authorized_keys
+
  #AuthorizedKeysFile %h/.ssh/authorized_keys
  
 
*Remove the ability to login to the OpenSSH server using a password:
 
*Remove the ability to login to the OpenSSH server using a password:
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:*Change the appropriate line to:
 
:*Change the appropriate line to:
−
  AuthorizedKeysFile /home/client9260/.ssh/authorized_keys
+
  AuthorizedKeysFile /home/client9260/.ssh/authorized_keys
  
 
:and restart the OpenSSH server ( sudo /etc/init.d/ssh restart ).
 
:and restart the OpenSSH server ( sudo /etc/init.d/ssh restart ).

Revision as of 20:23, 2 March 2010

The Medsphere OpenVista-CIS package is a modification of CPRS which has image viewing and other commercial ehancements added. (See this for a list of all Medsphere projects.)

It uses the .NET framework in Windows or the MONO framework in Linux. (There are versions for both platforms. Mac users may be able to adapt the Linux version.) OpenVistA-CIS was developed on the Gtk platform (a widely-used Linux development platform).

Installation on Windows

  • If using an Astronaut OpenVistA server package, it is easiest to start OpenVistA-CIS using the Astronaut shortcut.

Installation on Linux

(These instructions are oriented towards Ubuntu/Kubuntu users). For more information about the required dependencies see this Medsphere forum page.

  • Install the Mono platform and other required dependencies in Ubuntu 9.10 (Karmic):
  • mono-runtime
  • libmono-corlib2.0-cil
  • libgtk2.0-cil
  • libglade2.0-cil
  • libmono-cairo2.0-cil
  • libmono-winforms2.0-cil
  • libmono-system-runtime2.0-cil

You can install all of the dependencies at once: 

sudo apt-get install mono-runtime libmono-corlib2.0-cil libgtk2.0-cil libglade2.0-cil libmono-cairo2.0-cil libmono-winforms2.0-cil libmono-system-runtime2.0-cil
  • Create directories and download the OpenVistA-CIS binaries into them:
mkdir ~/openvistacisclient
cd ~/openvistacisclient
wget http://sourceforge.net/projects/openvista/files/OpenVista%20CIS/1.0%20RC2/openvistacis-0.9.96-client.zip/download
mkdir ~/openvistacisvitals
cd ~/openvistacisvitals
wget http://sourceforge.net/projects/openvista/files/OpenVista%20CIS/1.0%20RC2/openvistacis-0.9.96-vitals.zip/download
  • Unzip the binaries into their respective folders:
cd ~/openvistacisclient
unzip openvistacis-0.9.96-client.zip
cd ~/openvistacisvitals
unzip openvistacis-0.9.96-vitals.zip

Note: In Linux, the symbol ~ stands for /home/user (where user is your username). You can use /home/user in place of ~ , if you wish.

  • Run (or create a shortcut to run) the OpenVistA-CIS client:
cd ~/openvistacisclient
mono OpenVistaCIS.exe --server=myserver.mydomain.org --port=9260
and the OpenVistA-CIS Vitals module:
cd ~/openvistacisvitals
mono OpenVistaVitals.exe --server=myserver.mydomain.org --port=9260

The options --server=myserver.mydomain.org and --port=9260 are not required, but if they are not included in the command-line, the user will be prompted to enter them. (Medsphere uses default port 9201, but Astronaut OpenVistA server uses default port 9260.)

Note: If running from a menu item shortcut, make sure you set the directory as the workpath:

Menu Editor -> New item
-> General -> Name: OpenVistA-CIS Client
-> Command: mono OpenVistaCIS.exe --server=myserver.mydomain.org --port=9260
-> Advanced -> Work path: /home/user/openvistacisclient
and
Menu Editor -> New item
-> General -> Name: OpenVistA-CIS Vitals
-> Command: mono OpenVistaVitals.exe --server=myserver.mydomain.org --port=9260
-> Advanced -> Work path: /home/user/openvistacisvitals

Note: Menu items and shortcuts do not allow the use of the ~ symbol. You must use the full name of the directory.

Connect OpenVistA-CIS to a server through an SSH tunnel

These instructions are for Linux. If using Windows, use the Astronaut CPRS package (after installing OpenVistA-CIS separately), which has a PuTTY SSH utility and Astronaut SSH shortcut to initiate the SSH tunnel, as well as a shortcut (stub) to start the OpenVistA-CIS Client. A full list of SSH commands is here.

  • Start the SSH tunnel to the remote server. (remoteserver.computer.xyz can be either a URL or an IP address.)
ssh -l client9260 -L 9201:127.0.0.1:9260 remoteserver.computer.xyz -p 22

This command uses the client9260 SSH user (the default on the Astronaut OpenVistA server), the local 9201 port (default on OpenVistA-CIS clients), the remote 9260 port (the default on the Astronaut OpenVistA server), and the SSH 22 port (the default). Any of these can be changed, of course (depending on your configuration).

Note: This method requires a password authentication manually in a command-line terminal, so if a corresponding Menu item / shortcut for this command is created, make sure the Advanced -> Run in terminal option is ticked.

  • Start the OpenVistA-CIS Client (as in the preceding section):
mono OpenVistaCIS.exe --server=127.0.0.1 --port=9201

Automated SSH password authentication script

  • Install the expect utility:
sudo apt-get install expect
  • If your password is still set at the Astronaut SSH default (i.e. not#1sostrong), then use this command to start the SSH tunnel:
expect -c 'spawn ssh -l client9260 -L 9201:127.0.0.1:9260 remoteserver.computer.xyz -p 22; expect assword ; send "not#1sostrong\n" ; interact'
Obviously use the values that correspond to your own setup.
  • I place this command in a Menu Item / Shortcut that I name Astronaut SSH (to keep it consistent with the Astronaut shortcut-naming scheme used elsewhere). It seems to run for me properly only if the Advanced -> Run in terminal option is also ticked.
  • Start the OpenVistA-CIS Client (as in the preceding section):
mono OpenVistaCIS.exe --server=127.0.0.1 --port=9201

SSH tunnel using a key pair

Password authentication (as in the previous step) is not a preferred method of routine SSH connection, as it leaves the SSH server exposed to brute force password cracking attempts.

The preferred method is to generate a public/private authentication key pair and store the keys on the server and client.

See the OpenSSH instructions for generating and using key pairs, or see the Ubuntu Server manual or the Ubuntuguide simplified instructions. (Remember that an OpenSSH server was installed as a pre-requisite to installing the Astronaut OpenVistA server.)

SSH-agent provides another method of storing a passphrase in a key pair.

  • In brief, on a client machine generate a key pair:
ssh-keygen
  • Accept the default location for the key file ( /home/user/.ssh/id_rsa ).
  • Leave the passphrase empty
  • Copy the public key ( /home/user/.ssh/id_rsa.pub ) to the server that is hosting the VistA server, into the /home/serveruser/.ssh (for whichever user is the administrative user for the server -- generally the user that installed the server initially). If the SSH tunnel is (still) set at default port 22, you can copy the key using the utility:
ssh-copy-id serveruser@remoteserver.computer.xyz
  • The ssh-copy-id utility only works over port 22. An alternative if you have changed your SSH port is to copy the /home/user/.ssh/id_rsa.pub key to the server manually. On the server make sure the directory /home/serveruser/.ssh exists and that there is a file authorized_keys (with write privileges) in that folder. If not, create such a file while logged into the server as serveruser (the touch command creates an empty file):
mkdir ~/.ssh
cd ~/.ssh
touch authorized_keys

Then concatenate the id_rsa.pub key you have copied to the ~/.ssh folder. (Make sure the owner of id_rsa.pub, after copying, is serveruser.): 

cd ~/.ssh
chown serveruser id_rsa.pub
cat authorized_keys id_rsa.pub >> authorized_keys
  • Make sure the OpenSSH server knows to look for the key file. On the VistA server, edit the OpenSSH configuration file:
sudo nano /etc/ssh/sshd_config
  • Uncomment the line (i.e. remove the # at the beginning of the line):
#AuthorizedKeysFile %h/.ssh/authorized_keys
  • Remove the ability to login to the OpenSSH server using a password:
 sudo nano /etc/ssh/sshd_config
  • Change the line
#PasswordAuthentication yes
to
PasswordAuthentication no
  • Restart the OpenSSH server:
sudo /etc/init.d/ssh restart

ssh -l serveruser -L 9201:127.0.0.1:9260 remoteserver.computer.xyz -p 22
  • I prefer to keep the Astronaut structure, so I copy the keys to a folder for client9260. Again on the VistA server:
sudo mkdir /home/client9260
sudo mkdir /home/client9260/.ssh
sudo cp /home/serveruser/.ssh/* /home/client9260/.ssh/
sudo chown -R client9260 /home/client9260
  • This time make sure the OpenSSH server knows the new location to look for the key file. On the VistA server, edit the OpenSSH configuration file:
sudo nano /etc/ssh/sshd_config
  • Change the appropriate line to:
AuthorizedKeysFile /home/client9260/.ssh/authorized_keys
and restart the OpenSSH server ( sudo /etc/init.d/ssh restart ).
 ssh -l client9260 -L 9201:127.0.0.1:9260 remoteserver.computer.xyz -p 22

Connect OpenVistA-CIS Client to an Astronaut OpenVistA server on the same computer

mono OpenVistaCIS.exe --server=127.0.0.1 --port=9260
  • Use your Access Code / Verify Code as the LoginID / Password ( default at installation for Astronaut systems is sys.admin / vista!123 ).

Installation on Mac

Open your firewalls

Don't forget to open your firewalls on both sides of the connection. If you are using an SSH tunnel, the port used for SSH (default is 22) must be open in the firewall on both ends of the connection.

If you are connecting (without an SSH tunnel) using port 9260 or 9201 (or another port), make sure the port(s) used are allowed by the firewalls on each side of the connection.

Connect to a demo server

Connect to the Medsphere Demo server

  • Test your setup by connecting to the Medsphere Demo server. Instructions are here.
  • Connection Information
  • Login ID: PU1234 -> Password: PU1234!!
  • Server: openvista.medsphere.org
  • Port: 9201 for the newer demo database
  • Port: 9202 for the original demo database

Note: if you're not running the latest version of OpenVista-CIS, you must use --proxy-mode=builtin as a command-line option to connect. The demo server no longer runs the bridge.

  • Other OpenVista user accounts include:
  • MANAGER,SYSTEM: -> access/verify/e-sig: SM1234 / SM1234!! / SM1234
  • USER, PHYSICIAN: -> access/verify/e-sig: PU1234 / PU1234!! / PU1234
  • USER,NURSE: -> access/verify/e-sig: NU1234 / NU1234!! / NU1234
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