115 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			115 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg = config.services.physlock;
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in
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{
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  ###### interface
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  options = {
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    services.physlock = {
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      enable = mkOption {
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        type = types.bool;
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        default = false;
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        description = ''
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          Whether to enable the <command>physlock</command> screen locking mechanism.
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          Enable this and then run <command>systemctl start physlock</command>
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          to securely lock the screen.
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          This will switch to a new virtual terminal, turn off console
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          switching and disable SysRq mechanism (when
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          <option>services.physlock.disableSysRq</option> is set)
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          until the root or <option>services.physlock.user</option>
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          password is given.
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        '';
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      };
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      user = mkOption {
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        type = types.nullOr types.str;
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        default = null;
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        description = ''
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          User whose password will be used to unlock the screen on par
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          with the root password.
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        '';
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      };
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      disableSysRq = mkOption {
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        type = types.bool;
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        default = true;
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        description = ''
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          Whether to disable SysRq when locked with physlock.
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        '';
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      };
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      lockOn = {
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        suspend = mkOption {
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          type = types.bool;
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          default = true;
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          description = ''
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            Whether to lock screen with physlock just before suspend.
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          '';
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        };
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        hibernate = mkOption {
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          type = types.bool;
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          default = true;
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          description = ''
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            Whether to lock screen with physlock just before hibernate.
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          '';
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        };
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        extraTargets = mkOption {
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          type = types.listOf types.str;
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          default = [];
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          example = [ "display-manager.service" ];
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          description = ''
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            Other targets to lock the screen just before.
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            Useful if you want to e.g. both autologin to X11 so that
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            your <filename>~/.xsession</filename> gets executed and
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            still to have the screen locked so that the system can be
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            booted relatively unattended.
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          '';
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        };
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      };
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    };
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  };
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  ###### implementation
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  config = mkIf cfg.enable {
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    # for physlock -l and physlock -L
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    environment.systemPackages = [ pkgs.physlock ];
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    systemd.services."physlock" = {
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      enable = true;
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      description = "Physlock";
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      wantedBy = optional cfg.lockOn.suspend   "suspend.target"
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              ++ optional cfg.lockOn.hibernate "hibernate.target"
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              ++ cfg.lockOn.extraTargets;
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      before   = optional cfg.lockOn.suspend   "systemd-suspend.service"
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              ++ optional cfg.lockOn.hibernate "systemd-hibernate.service"
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              ++ cfg.lockOn.extraTargets;
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      serviceConfig.Type = "forking";
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      script = ''
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        ${pkgs.physlock}/bin/physlock -d${optionalString cfg.disableSysRq "s"}${optionalString (cfg.user != null) " -u ${cfg.user}"}
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      '';
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    };
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  };
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}
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