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