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https://github.com/DeeJanuz/frametop.git
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DeeJanuzandClaude Opus 5.5
d5c2ec65d7
The local RDP login between krdp and the VNC bridge uses the account's own name instead of "steamos", its certificate the hostname instead of "steam-frame", and the ft_pointer driver installs under the user's home instead of /home/steamos. The remote-access address already came from the tailnet (tailscale0 and tailscaled's local API). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
102 lines
4.0 KiB
Bash
Executable File
102 lines
4.0 KiB
Bash
Executable File
#!/bin/bash
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# Runs on the Frame host. Serves the Frametop desktop's primary screen (the one with the
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# taskbar) over VNC for clients like RealVNC Viewer or macOS Screen Sharing. No VNC server
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# here can capture KWin directly, so this bridges through krdp: Xvnc (a virtual X screen
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# served over VNC) runs a FreeRDP client connected to krdpserver on 127.0.0.1. Both run in
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# the dev container. VNC listens on the tailnet address only.
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# Started by frametop-session.sh when REMOTE=1, after remote-desktop.sh.
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#
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# krdp streams the whole workspace (every screen). Its --monitor would stream one screen,
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# but krdp 6.7 then maps the pointer as if that screen sat at 0,0, so clicks miss on a
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# screen placed lower or further right. Instead the VNC screen is the primary's size, and
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# the workspace-sized RDP window inside it is shifted so the primary fills it. The pointer
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# maps 1:1. When the layout changes, the VNC screen resizes and the RDP client reconnects.
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set -eu
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here=$(dirname "$(readlink -f "$0")")
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vnc_port=${VNC_PORT:-5900}
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rdp_port=${RDP_PORT:-3390}
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display=:20
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creds=$HOME/.config/frametop-remote
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addr=$(ip -4 -o addr show tailscale0 2>/dev/null | awk '{print $4}' | cut -d/ -f1)
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if [ -z "$addr" ]; then
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echo "tailscale0 has no address, not starting VNC" >&2
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exit 1
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fi
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# The VNC password is limited to 8 characters by the protocol. The traffic is
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# still encrypted by the tailnet (WireGuard).
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if [ ! -s "$creds/vnc-password" ]; then
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(umask 077; head -c 12 /dev/urandom | base64 | tr -d '/+=' | cut -c1-8 > "$creds/vnc-password")
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fi
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# Wait for krdpserver (started by remote-desktop.sh).
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for _ in $(seq 60); do
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ss -ltn | grep -q "127.0.0.1:$rdp_port " && break
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sleep 1
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done
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# "x y width height workspace_width workspace_height" of the primary screen, once Plasma is up.
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view() { "$here/../layout/ft-layout" remote-view 2>/dev/null | grep -xE '[0-9]+( [0-9]+){5}'; }
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v=
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for _ in $(seq 90); do
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v=$(view) && [ -n "$v" ] && break
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v=
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sleep 1
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done
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if [ -z "$v" ]; then
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echo "couldn't read the desktop's screens, not starting VNC" >&2
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exit 1
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fi
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read -r _ _ w h _ _ <<< "$v"
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export XDG_RUNTIME_DIR=/run/user/$(id -u)
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box() { "$HOME/.local/bin/distrobox" enter dev -- "$@"; }
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stop_rdp() { pkill -f "[x]freerdp /v:127.0.0.1:$rdp_port " 2>/dev/null || true; }
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trap 'stop_rdp; pkill -f "[X]vnc $display " 2>/dev/null || true' EXIT
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box bash -c 'vncpasswd -f < "$1/vnc-password" > "$1/vnc-passwd.bin" && chmod 600 "$1/vnc-passwd.bin"' - "$creds"
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box Xvnc "$display" -geometry "${w}x${h}" -depth 24 \
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-interface "$addr" -rfbport "$vnc_port" \
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-SecurityTypes VncAuth -PasswordFile "$creds/vnc-passwd.bin" \
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-AlwaysShared -desktop "Steam Frame (Frametop)" &
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xvnc=$!
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sleep 2
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# Keep an RDP connection open inside the VNC screen. Reconnect if it drops or the layout changes.
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# /cert:ignore is fine here: the connection never leaves this host.
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while kill -0 $xvnc 2>/dev/null; do
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read -r x y w h ww wh <<< "$v"
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box env DISPLAY=$display bash -c '
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size=$1 x=$2 y=$3 ww=$4 wh=$5 creds=$6 rdp_port=$7
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if [ "$(xrandr | sed -n "s/.*current \([0-9]*\) x \([0-9]*\),.*/\1x\2/p")" != "$size" ]; then
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xrandr --newmode "$size" 0 "${size%x*}" 0 0 0 "${size#*x}" 0 0 0 2>/dev/null || true
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xrandr --addmode VNC-0 "$size" 2>/dev/null || true
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xrandr --fb "$size" --output VNC-0 --mode "$size"
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fi
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xfreerdp /v:127.0.0.1:"$rdp_port" /u:"$(id -un)" /p:"$(cat "$creds/password")" \
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/cert:ignore /size:"${ww}x${wh}" -decorations +clipboard >/dev/null 2>&1 &
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rdp=$!
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# FreeRDP takes no negative position, so move its window once it is up.
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for _ in $(seq 60); do
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win=$(xdotool search --class xfreerdp 2>/dev/null | tail -1)
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[ -n "$win" ] && break
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sleep 0.5
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done
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[ -n "$win" ] && xdotool windowmove "$win" "$((-x))" "$((-y))"
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wait $rdp
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' vnc-rdp "${w}x$h" "$x" "$y" "$ww" "$wh" "$creds" "$rdp_port" || true &
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rdp=$!
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while kill -0 $rdp 2>/dev/null; do
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sleep 5
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now=$(view) || continue
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[ -n "$now" ] && [ "$now" != "$v" ] || continue
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echo "layout changed: $v -> $now"
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v=$now
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stop_rdp
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done
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wait $rdp 2>/dev/null || true
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sleep 2
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done
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