johnslattery
8/25/2016 - 5:27 PM

Create an automatically closing ssh tunnel to a host running VirtualBox and connect to a VirtualBox VRDE or internal Windows VM RDP server u

Create an automatically closing ssh tunnel to a host running VirtualBox and connect to a VirtualBox VRDE or internal Windows VM RDP server using freerdp, modifying window size to suit display and ssh and freerdp to suit network speed. Example of building up command line arguments in arrays and the properly expanding them on the command line of the program.

xfreerdp-over-ssh.bash
content_copyfile_download
declare -a ssh_opts=(-f "-L $port:127.0.0.1:$port" -N)
declare -a ssh_non_opts=("$hostname")
declare -a xfreerdp_opts=("/u:$user" /cert-ignore +clipboard)
declare -a xfreerdp_non_opts=("/v:localhost:$port")

case "$display_scheme" in
  '1920x1080_display' )
    xfreerdp_opts+=(/size:1900x1000)
    ;;
  '1600x1200_display' )
    xfreerdp_opts+=(/size:1550x1100)
    ;;
  * )
    printf "Unrecognized display scheme '%b'.\n" "$display_scheme" >&2
    exit 1
    ;;
esac

case "$network" in
  'lan' )
    ;;
  'wan' )
    ssh_opts+=(-C)
    xfreerdp_opts+=(/bpp:16 /network:modem /compression)
    ;;
  * )
    printf "Unrecognized network '%b'.\n" "$network" >&2
    exit 1
    ;;
esac

ssh ${ssh_opts[*]} ${ssh_non_opts[*]} || (
  printf "ssh failed creating tunnel.\n" >&2
  exit )

xfreerdp ${xfreerdp_opts[*]} ${xfreerdp_non_opts[*]}