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# This module implements a terminal service based on ‘x11vnc’. It
# listens on port 5900 for VNC connections. It then presents a login
# screen to the user. If the user successfully authenticates, x11vnc
# checks to see if a X server is already running for that user. If
# not, a X server (Xvfb) is started for that user. The Xvfb instances
# persist across VNC sessions.
{ lib, pkgs, ... }:
{
config = {
services.xserver.enable = true;
services.xserver.videoDrivers = [ ];
# Enable GDM. Any display manager will do as long as it supports XDMCP.
services.displayManager.gdm.enable = true;
systemd.sockets.terminal-server = {
description = "Terminal Server Socket";
wantedBy = [ "sockets.target" ];
before = [ "multi-user.target" ];
socketConfig.Accept = true;
socketConfig.ListenStream = 5900;
};
systemd.services."terminal-server@" = {
description = "Terminal Server";
path = [
pkgs.xorg-server.out
pkgs.gawk
pkgs.which
pkgs.openssl
pkgs.xauth
pkgs.net-tools
pkgs.shadow
pkgs.procps
pkgs.util-linux
pkgs.bash
];
environment.FD_GEOM = "1024x786x24";
environment.FD_XDMCP_IF = "127.0.0.1";
#environment.FIND_DISPLAY_OUTPUT = "/tmp/foo"; # to debug the "find display" script
serviceConfig = {
StandardInput = "socket";
StandardOutput = "socket";
StandardError = "journal";
ExecStart = "@${pkgs.x11vnc}/bin/x11vnc x11vnc -inetd -display WAIT:1024x786:cmd=FINDCREATEDISPLAY-Xvfb.xdmcp -unixpw -ssl SAVE";
# Don't kill the X server when the user quits the VNC
# connection. FIXME: the X server should run in a
# separate systemd session.
KillMode = "process";
};
};
};
}
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