105 lines
2.7 KiB
Nix
105 lines
2.7 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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inherit (lib)
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escapeShellArgs
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getExe
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lists
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literalExpression
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maintainers
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mkEnableOption
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mkIf
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mkOption
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mkPackageOption
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types;
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cfg = config.services.dnsproxy;
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yaml = pkgs.formats.yaml { };
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configFile = yaml.generate "config.yaml" cfg.settings;
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finalFlags = (lists.optional (cfg.settings != { }) "--config-path=${configFile}") ++ cfg.flags;
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in
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{
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options.services.dnsproxy = {
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enable = mkEnableOption "dnsproxy";
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package = mkPackageOption pkgs "dnsproxy" { };
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settings = mkOption {
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type = yaml.type;
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default = { };
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example = literalExpression ''
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{
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bootstrap = [
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"8.8.8.8:53"
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];
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listen-addrs = [
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"0.0.0.0"
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];
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listen-ports = [
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53
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];
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upstream = [
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"1.1.1.1:53"
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];
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}
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'';
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description = ''
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Contents of the `config.yaml` config file.
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The `--config-path` argument will only be passed if this set is not empty.
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See <https://github.com/AdguardTeam/dnsproxy/blob/master/config.yaml.dist>.
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'';
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};
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flags = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "--upstream=1.1.1.1:53" ];
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description = ''
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A list of extra command-line flags to pass to dnsproxy. For details on the
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available options, see <https://github.com/AdguardTeam/dnsproxy#usage>.
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Keep in mind that options passed through command-line flags override
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config 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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systemd.services.dnsproxy = {
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description = "Simple DNS proxy with DoH, DoT, DoQ and DNSCrypt support";
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after = [ "network.target" "nss-lookup.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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ExecStart = "${getExe cfg.package} ${escapeShellArgs finalFlags}";
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Restart = "always";
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RestartSec = 10;
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DynamicUser = true;
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AmbientCapabilities = "CAP_NET_BIND_SERVICE";
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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NoNewPrivileges = true;
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ProtectClock = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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RemoveIPC = true;
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RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
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RestrictNamespaces = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SystemCallArchitectures = "native";
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SystemCallErrorNumber = "EPERM";
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SystemCallFilter = [ "@system-service" "~@privileged @resources" ];
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};
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};
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};
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meta.maintainers = with maintainers; [ diogotcorreia ];
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}
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