125 lines
		
	
	
		
			4.3 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			125 lines
		
	
	
		
			4.3 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg = config.services.samba-wsdd;
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in {
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  options = {
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    services.samba-wsdd = {
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      enable = mkEnableOption ''
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        Enable Web Services Dynamic Discovery host daemon. This enables (Samba) hosts, like your local NAS device,
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        to be found by Web Service Discovery Clients like Windows.
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        <note>
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          <para>If you use the firewall consider adding the following:</para>
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          <programlisting>
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            networking.firewall.allowedTCPPorts = [ 5357 ];
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            networking.firewall.allowedUDPPorts = [ 3702 ];
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          </programlisting>
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        </note>
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      '';
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      interface = mkOption {
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        type = types.nullOr types.str;
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        default = null;
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        example = "eth0";
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        description = "Interface or address to use.";
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      };
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      hoplimit = mkOption {
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        type = types.nullOr types.int;
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        default = null;
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        example = 2;
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        description = "Hop limit for multicast packets (default = 1).";
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      };
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      workgroup = mkOption {
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        type = types.nullOr types.str;
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        default = null;
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        example = "HOME";
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        description = "Set workgroup name (default WORKGROUP).";
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      };
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      hostname = mkOption {
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        type = types.nullOr types.str;
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        default = null;
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        example = "FILESERVER";
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        description = "Override (NetBIOS) hostname to be used (default hostname).";
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      };
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      domain = mkOption {
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        type = types.nullOr types.str;
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        default = null;
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        description = "Set domain name (disables workgroup).";
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      };
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      discovery = mkOption {
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        type = types.bool;
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        default = false;
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        description = "Enable discovery operation mode.";
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      };
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      listen = mkOption {
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        type = types.str;
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        default = "/run/wsdd/wsdd.sock";
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        description = "Listen on path or localhost port in discovery mode.";
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      };
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      extraOptions = mkOption {
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        type = types.listOf types.str;
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        default = [ "--shortlog" ];
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        example = [ "--verbose" "--no-http" "--ipv4only" "--no-host" ];
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        description = "Additional wsdd options.";
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      };
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    };
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  };
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  config = mkIf cfg.enable {
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    environment.systemPackages = [ pkgs.wsdd ];
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    systemd.services.samba-wsdd = {
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      description = "Web Services Dynamic Discovery host daemon";
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      after = [ "network.target" ];
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      wantedBy = [ "multi-user.target" ];
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      serviceConfig = {
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        DynamicUser = true;
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        Type = "simple";
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        ExecStart = ''
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          ${pkgs.wsdd}/bin/wsdd ${optionalString (cfg.interface != null) "--interface '${cfg.interface}'"} \
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                                ${optionalString (cfg.hoplimit != null) "--hoplimit '${toString cfg.hoplimit}'"} \
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                                ${optionalString (cfg.workgroup != null) "--workgroup '${cfg.workgroup}'"} \
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                                ${optionalString (cfg.hostname != null) "--hostname '${cfg.hostname}'"} \
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                                ${optionalString (cfg.domain != null) "--domain '${cfg.domain}'"} \
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                                ${optionalString cfg.discovery "--discovery --listen '${cfg.listen}'"} \
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                                ${escapeShellArgs cfg.extraOptions}
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        '';
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        # Runtime directory and mode
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        RuntimeDirectory = "wsdd";
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        RuntimeDirectoryMode = "0750";
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        # Access write directories
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        UMask = "0027";
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        # Capabilities
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        CapabilityBoundingSet = "";
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        # Security
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        NoNewPrivileges = true;
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        # Sandboxing
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        ProtectSystem = "strict";
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        ProtectHome = true;
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        PrivateTmp = true;
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        PrivateDevices = true;
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        PrivateUsers = false;
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        ProtectHostname = true;
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        ProtectClock = true;
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        ProtectKernelTunables = true;
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        ProtectKernelModules = true;
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        ProtectKernelLogs = true;
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        ProtectControlGroups = true;
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        RestrictAddressFamilies = [ "AF_UNIX" "AF_INET" "AF_INET6" "AF_NETLINK" ];
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        RestrictNamespaces = true;
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        LockPersonality = true;
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        MemoryDenyWriteExecute = true;
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        RestrictRealtime = true;
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        RestrictSUIDSGID = true;
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        PrivateMounts = true;
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        # System Call Filtering
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        SystemCallArchitectures = "native";
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        SystemCallFilter = "~@clock @cpu-emulation @debug @module @mount @obsolete @privileged @raw-io @reboot @resources @swap";
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      };
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    };
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  };
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}
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