nixpkgs/modules/services/networking/avahi-daemon.nix
Eelco Dolstra 87e06b97a3 * Don't include the hostname in option default values. Default values
are included in the manual, so this causes a different manual to be
  built for each machine.
* Clean up indentation of cntlm module.

svn path=/nixos/trunk/; revision=34387
2012-06-08 14:29:31 +00:00

138 lines
3.1 KiB
Nix

# Avahi daemon.
{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.services.avahi;
inherit (pkgs) avahi;
avahiDaemonConf = with cfg; pkgs.writeText "avahi-daemon.conf" ''
[server]
host-name=${hostName}
browse-domains=${concatStringsSep ", " browseDomains}
use-ipv4=${if ipv4 then "yes" else "no"}
use-ipv6=${if ipv6 then "yes" else "no"}
[wide-area]
enable-wide-area=${if wideArea then "yes" else "no"}
[publish]
disable-publishing=${if publishing then "no" else "yes"}
'';
in
{
###### interface
options = {
services.avahi = {
enable = mkOption {
default = false;
description = ''
Whether to run the Avahi daemon, which allows Avahi clients
to use Avahi's service discovery facilities and also allows
the local machine to advertise its presence and services
(through the mDNS responder implemented by `avahi-daemon').
'';
};
hostName = mkOption {
type = types.uniq types.string;
description = ''Host name advertised on the LAN.'';
};
browseDomains = mkOption {
default = [ "0pointer.de" "zeroconf.org" ];
description = ''
List of non-local DNS domains to be browsed.
'';
};
ipv4 = mkOption {
default = true;
description = ''Whether to use IPv4'';
};
ipv6 = mkOption {
default = false;
description = ''Whether to use IPv6'';
};
wideArea = mkOption {
default = true;
description = ''Whether to enable wide-area service discovery.'';
};
publishing = mkOption {
default = true;
description = ''Whether to allow publishing.'';
};
nssmdns = mkOption {
default = false;
description = ''
Whether to enable the mDNS NSS (Name Service Switch) plug-in.
Enabling it allows applications to resolve names in the `.local'
domain by transparently querying the Avahi daemon.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
services.avahi.hostName = mkDefault config.networking.hostName;
users.extraUsers = singleton
{ name = "avahi";
uid = config.ids.uids.avahi;
description = "`avahi-daemon' privilege separation user";
home = "/var/empty";
};
users.extraGroups = singleton
{ name = "avahi";
gid = config.ids.gids.avahi;
};
system.nssModules = optional cfg.nssmdns pkgs.nssmdns;
environment.systemPackages = [ avahi ];
jobs.avahi_daemon =
{ name = "avahi-daemon";
startOn = "ip-up";
script =
''
export PATH="${avahi}/bin:${avahi}/sbin:$PATH"
# Make NSS modules visible so that `avahi_nss_support ()' can
# return a sensible value.
export LD_LIBRARY_PATH="${config.system.nssModules.path}"
mkdir -p /var/run/avahi-daemon
exec ${avahi}/sbin/avahi-daemon --syslog -f "${avahiDaemonConf}"
'';
};
services.dbus.enable = true;
services.dbus.packages = [avahi];
};
}