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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.dnsmasq;
mapA = f: attrs: with builtins; attrValues (mapAttrs f attrs);
in
{
options = {
services.dnsmasq.enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable DNSmasq.";
};
services.dnsmasq.package = mkOption {
type = types.path;
default = pkgs.dnsmasq;
defaultText = "pkgs.dnsmasq";
description = "This option specifies the dnsmasq package to use.";
};
services.dnsmasq.bind = mkOption {
type = types.str;
default = "127.0.0.1";
description = "This option specifies the interface on which DNSmasq will listen.";
};
services.dnsmasq.port = mkOption {
type = types.int;
default = 53;
description = "This option specifies port on which DNSmasq will listen.";
};
services.dnsmasq.addresses = mkOption {
type = types.attrs;
default = {};
description = "List of domains that will be redirected by the DNSmasq.";
example = literalExpression ''
{ localhost = "127.0.0.1"; }
'';
};
services.dnsmasq.servers = mkOption {
type = types.listOf types.str;
default = [];
description = ''
List of upstream DNS servers to forward queries to.
If empty, dnsmasq will use the servers from /etc/resolv.conf.
Each entry can be:
- An IP address (e.g., "1.2.3.4")
- A domain-specific server (e.g., "/example.com/1.2.3.4")
- A server with port (e.g., "1.2.3.4#5353")
See dnsmasq(8) man page for --server option for full syntax.
'';
example = literalExpression ''
[
"8.8.8.8"
"8.8.4.4"
"/internal.example.com/192.168.1.1"
]
'';
};
};
config = mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
launchd.daemons.dnsmasq = {
command = let
args = [
"--listen-address=${cfg.bind}"
"--port=${toString cfg.port}"
"--keep-in-foreground"
] ++ (mapA (domain: addr: "--address=/${domain}/${addr}") cfg.addresses)
++ (map (server: "--server=${server}") cfg.servers);
in
"${cfg.package}/bin/dnsmasq ${concatStringsSep " " args}";
serviceConfig.KeepAlive = true;
serviceConfig.RunAtLoad = true;
};
environment.etc = builtins.listToAttrs (builtins.map (domain: {
name = "resolver/${domain}";
value = {
enable = true;
text = ''
port ${toString cfg.port}
nameserver ${cfg.bind}
'';
};
}) (builtins.attrNames cfg.addresses));
};
}
|
