Implements mouse input by speaking the RFB protocol directly to Weston's
neatvnc server (localhost:HIVE_GUI_VNC_PORT, default 5900) — the VNC
backend's native remote-input path. No /dev/uinput, no kernel bypass;
the compositor mediates all input just as it does for the browser VNC viewer.
Changes:
- rfb_handshake(): RFB 3.8 handshake with security type None (auth-method=none
in weston.ini); shared-session ClientInit keeps the browser viewer connected
- rfb_pointer_event(): encodes a 6-byte RFB PointerEvent (type=5, button-mask,
x/y big-endian)
- rfb_send_pointer_events(): connects, handshakes, sends an event slice,
flushes — all in one TCP connection
- mouse_move(x, y): sends a single PointerEvent(mask=0, x, y)
- mouse_click(x, y, button): sends move → button-down → button-up sequence
(left/middle/right via RFB button-mask bits 0/1/2)
- vnc_port(): reads HIVE_GUI_VNC_PORT from env, falls back to 5900
No new packages or nix options — HIVE_GUI_VNC_PORT is already set by the
harness when gui.enable = true; grim/wtype are the only runtime deps.
Closes#2618.
228a5bacca