WSLg Standalone on RHEL10 with RDP+RAIL

[rar222]

Acknowledgements

A starting point came from https://blog.jacobstoner.com/wayweston-rdp/

Package List

As I've experimented with various different build configurations, I'm not sure if all of these are necessary.

I have both Code Ready and EPEL repos enabled.

 sudo yum install meson nasm dbus-devel  pkg-config cmake xorg-x11-server-Xwayland libxkbcommon-devel  wayland-protocols-devel wayland-devel libinput-devel libevdev-devel libdrm-devel mesa-libEGL-devel systemd-devel pam-devel  libXcursor-devel lcms2-devel colord-devel mesa-libgbm-devel librsvg2-devel 

Building

Here are the basic building blocks for compilation and installation (into a local directory)

#!/bin/bash

cd $(dirname $0)

BASE=$(readlink -f base)
PREFIX=$BASE/install

mkdir -p $BASE

# OPENH264
SRC_OPENH264=$BASE/openh264
BLD_OPENH264=$BASE/build/openh264

cd $BASE
git clone https://github.com/cisco/openh264

mkdir -p $BLD_OPENH264
cd $SRC_OPENH264

meson setup -Dprefix=$PREFIX $BLD_OPENH264
ninja -C $BLD_OPENH264 install


# FreeRDP
SRC_FREERDP=$BASE/FreeRDP-mirror
BLD_FREERDP=$BASE/build/FreeRDP-mirror

cd $BASE
git clone https://github.com/microsoft/FreeRDP-mirror.git

mkdir -p $BLD_FREERDP

cmake -GNinja -DCMAKE_INSTALL_PREFIX=$PREFIX -DWITH_SERVER=ON -DWITH_X11=OFF  -DWITH_OPENH264=ON -DWITH_FFMPEG=OFF -DCHANNEL_URBDRC=OFF -H$SRC_FREERDP -B$BLD_FREERDP
cmake --build $BLD_FREERDP --target install


# Weston
SRC_WESTON=$BASE/weston-mirror
BLD_WESTON=$BASE/build/weston-mirror

cd $BASE
git clone https://github.com/microsoft/weston-mirror.git

perl -p -i -e 's/RemoteFxCodec = FALSE/RemoteFxCodec = TRUE/' $SRC_WESTON/libweston/backend-rdp/rdp.c
perl -p -i -e 's/context->SetVolume/\/\/context->SetVolume/' $SRC_WESTON/compositor/rdpaudio.c

mkdir -p $BLD_WESTON
cd $SRC_WESTON

export PKG_CONFIG_PATH=$PREFIX/lib64/pkgconfig
meson setup -Dprefix=$PREFIX -Dpipewire=false -Dbackend-fbdev=false -Dbackend-x11=false -Dbackend-wayland=false -Dbackend-headless=false -Dbackend-drm-screencast-vaapi=false -Dbackend-drm=false -Dbackend-default=rdp -Dremoting=false $BLD_WESTON
ninja -C $BLD_WESTON install

Creating the TLS Certificates

As per: https://man.archlinux.org/man/extra/weston/weston-rdp.7.en#Generating_cryptographic_material_for_the_RDP_backend

$ openssl genrsa -out tls.key 2048
Generating RSA private key, 2048 bit long modulus
[...]
$ openssl req -new -key tls.key -out tls.csr
[...]
$ openssl x509 -req -days 365 -signkey tls.key -in tls.csr -out tls.crt
[...]

Startup

Given we haven't installed it into a known location, we'll need to update the environment

#!/bin/bash

BASE=/path/to/base/as/above
export LD_LIBRARY_PATH=$BASE/install/lib64
export PATH=$BASE/install/bin:$PATH

weston --backend=rdp-backend.so --xwayland --shell=rdprail-shell.so --rdp-tls-cert=tls.crt --rdp-tls-key=tls.key --logger-scopes=rdp-backend,log

Firewall Configuration

Example firewall command

sudo firewall-cmd --permanent --add-port=3389/tcp
sudo firewall-cmd --reload

Example .rdp file from windows

Here's an example which runs xterm from windows.

You will probably need to update "full address:s:192.168.0.1"

xterm.rdp

screen mode id:i:2
use multimon:i:1
desktopwidth:i:1920
desktopheight:i:1080
session bpp:i:32
winposstr:s:0,1,269,155,1920,1032
compression:i:1
keyboardhook:i:2
audiocapturemode:i:0
videoplaybackmode:i:1
connection type:i:7
networkautodetect:i:1
bandwidthautodetect:i:1
displayconnectionbar:i:1
enableworkspacereconnect:i:0
remoteappmousemoveinject:i:1
disable wallpaper:i:0
allow font smoothing:i:0
allow desktop composition:i:0
disable full window drag:i:1
disable menu anims:i:1
disable themes:i:0
disable cursor setting:i:0
bitmapcachepersistenable:i:1
full address:s:192.168.0.1
audiomode:i:0
redirectprinters:i:1
redirectlocation:i:0
redirectcomports:i:0
redirectsmartcards:i:1
redirectwebauthn:i:1
redirectclipboard:i:1
redirectposdevices:i:0
autoreconnection enabled:i:1
authentication level:i:2
prompt for credentials:i:1
negotiate security layer:i:1
alternate shell:s:
shell working directory:s:
gatewayhostname:s:
gatewayusagemethod:i:4
gatewaycredentialssource:i:4
gatewayprofileusagemethod:i:0
promptcredentialonce:i:0
gatewaybrokeringtype:i:0
use redirection server name:i:0
rdgiskdcproxy:i:0
kdcproxyname:s:
enablerdsaadauth:i:0
remoteapplicationmode:i:1
remoteapplicationname:s:xterm
remoteapplicationprogram:s:/usr/bin/xterm
remoteapplicationcmdline:s:

[rar222]

Running glxgears from the package glx-utils on my laptop with integrated GPU shows

2687 frames in 5.0 seconds = 537.078 FPS