#
# Googled for gucamole ubuntu 20
#

# Followed instuctions in
  https://www.linuxbabe.com/ubuntu/apache-guacamole-remote-desktop-ubuntu-20-04


# Some additional useful details in:
  https://www.tecmint.com/guacamole-access-remote-linux-windows-machines-via-web-browser/
  https://www.teknotut.com/en/install-vnc-server-with-gnome-display-on-ubuntu-18-04/

#
# Worked with the newer source code version available (1.3.0), rather than the 1.20 in article
#
  https://apache.org/dyn/closer.cgi?action=download&filename=guacamole/1.3.0/source/guacamole-server-1.3.0.tar.gz


 wget -O guacamole-server-1.3.0.tar.gz "https://apache.org/dyn/closer.cgi?action=download&filename=guacamole/1.3.0/source/guacamole-server-1.3.0.tar.gz"

wget -O guacamole-client-1.3.0.tar.gz "https://apache.org/dyn/closer.cgi?action=download&filename=guacamole/1.3.0/source/guacamole-client-1.3.0.tar.gz"



# Opted to compile up the client from soure:

  sudo apt-get install locate # for convenience (optional)
  
  sudo apt-get install maven
  sudo apt install openjdk-11-jdk
  export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64

  mvn package

# If issue to number of licenses comes up, run with:

 mvn  -Drat.numUnapprovedLicenses=100 package

  sudo /bin/cp guacamole/target/guacamole-1.3.0.war /var/lib/tomcat9/webapps/guacamole.war
  (dst war file owned: root:root  -rw-r--r--)
  

# Took a different route than this article over which desktop window manager to use
# => went with the default one for Ubuntu 20
#    and then got an 'ssh' connection via the browser going by following:
#      https://www.tecmint.com/guacamole-access-remote-linux-windows-machines-via-web-browser/
#
#    Also need to adjust sshd_config to allow authenticated login access

sudo apt-get install ubuntu-desktop

# Installs a lot of stuff!
#
# One of the key installs is 'gdm3' the Gnome display manager
# Reboot machine to get the graphical desktop layer up and running

sudo systemctl status gdm



For VNC Server:

  https://www.teknotut.com/en/install-vnc-server-with-gnome-display-on-ubuntu-18-04/

For XRDP Server:

  https://www.e2enetworks.com/help/knowledge-base/how-to-install-remote-desktop-xrdp-on-ubuntu-18-04/




####


File: vncserve@.service

Substitute with your ****USER**** with your username

====
[Unit]
Description=VNC Server
After=syslog.target network.target

[Service]
Type=forking
User=****USER****
Group=****USER****
WorkingDirectory=/home/****USER****

# Clean any existing files in /tmp/.X11-unix environment
#ExecStartPre=/usr/bin/vncserver -kill :%i > /dev/null 2>&1 || :

ExecStartPre=-/usr/bin/vncserver -kill :%i > /dev/null 2>&1

# Another reasonable choice for geometry:
#  1280x1024
ExecStart=/usr/bin/vncserver -localhost yes -geometry 1920x1080 -depth 24 :%i
ExecStop=/usr/bin/vncserver -kill :%i

[Install]
====


# At one stage it looked like I would benefit from having
# systen units installed, but in fact the /etc/init.d step
# in the instructions is already enough to trigger this

# Obsolete adjustment:
# Wanted systemctl service commands, so tweaked configure to:
./configure --with-init-dir=/etc/init.d --with-systemd-dir=/etc/systemd/system