162 lines
4.5 KiB
Nix
162 lines
4.5 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.dae;
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assets = cfg.assets;
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genAssetsDrv = paths: pkgs.symlinkJoin {
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name = "dae-assets";
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inherit paths;
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};
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in
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{
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meta.maintainers = with lib.maintainers; [ pokon548 oluceps ];
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options = {
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services.dae = with lib;{
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enable = mkEnableOption
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(mdDoc "A Linux high-performance transparent proxy solution based on eBPF");
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package = mkPackageOptionMD pkgs "dae" { };
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assets = mkOption {
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type = with types;(listOf path);
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default = with pkgs; [ v2ray-geoip v2ray-domain-list-community ];
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defaultText = literalExpression "with pkgs; [ v2ray-geoip v2ray-domain-list-community ]";
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description = mdDoc ''
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Assets required to run dae.
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'';
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};
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assetsPath = mkOption {
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type = types.str;
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default = "${genAssetsDrv assets}/share/v2ray";
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defaultText = literalExpression ''
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(symlinkJoin {
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name = "dae-assets";
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paths = assets;
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})/share/v2ray
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'';
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description = mdDoc ''
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The path which contains geolocation database.
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This option will override `assets`.
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'';
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};
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openFirewall = mkOption {
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type = with types; submodule {
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options = {
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enable = mkEnableOption "enable";
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port = mkOption {
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type = types.int;
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description = ''
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Port to be opened. Consist with field `tproxy_port` in config file.
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'';
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};
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};
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};
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default = {
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enable = true;
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port = 12345;
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};
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defaultText = literalExpression ''
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{
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enable = true;
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port = 12345;
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}
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'';
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description = mdDoc ''
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Open the firewall port.
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'';
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};
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configFile = mkOption {
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type = types.path;
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default = "/etc/dae/config.dae";
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example = "/path/to/your/config.dae";
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description = mdDoc ''
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The path of dae config file, end with `.dae`.
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'';
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};
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config = mkOption {
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type = types.str;
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default = ''
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global{}
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routing{}
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'';
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description = mdDoc ''
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Config text for dae.
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See <https://github.com/daeuniverse/dae/blob/main/example.dae>.
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'';
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};
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disableTxChecksumIpGeneric =
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mkEnableOption (mdDoc "See <https://github.com/daeuniverse/dae/issues/43>");
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};
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};
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config = lib.mkIf cfg.enable
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{
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environment.systemPackages = [ cfg.package ];
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systemd.packages = [ cfg.package ];
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environment.etc."dae/config.dae" = {
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mode = "0400";
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source = pkgs.writeText "config.dae" cfg.config;
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};
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networking = lib.mkIf cfg.openFirewall.enable {
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firewall =
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let portToOpen = cfg.openFirewall.port;
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in
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{
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allowedTCPPorts = [ portToOpen ];
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allowedUDPPorts = [ portToOpen ];
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};
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};
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systemd.services.dae =
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let
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daeBin = lib.getExe cfg.package;
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TxChecksumIpGenericWorkaround = with lib;(getExe pkgs.writeShellApplication {
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name = "disable-tx-checksum-ip-generic";
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text = with pkgs; ''
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iface=$(${iproute2}/bin/ip route | ${lib.getExe gawk} '/default/ {print $5}')
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${lib.getExe ethtool} -K "$iface" tx-checksum-ip-generic off
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'';
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});
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in
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{
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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ExecStartPre = [ "" "${daeBin} validate -c ${cfg.configFile}" ]
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++ (with lib; optional cfg.disableTxChecksumIpGeneric TxChecksumIpGenericWorkaround);
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ExecStart = [ "" "${daeBin} run --disable-timestamp -c ${cfg.configFile}" ];
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Environment = "DAE_LOCATION_ASSET=${cfg.assetsPath}";
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};
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};
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assertions = [
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{
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assertion = lib.pathExists (toString (genAssetsDrv cfg.assets) + "/share/v2ray");
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message = ''
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Packages in `assets` has no preset paths included.
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Please set `assetsPath` instead.
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'';
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}
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{
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assertion = !((config.services.dae.config != "global{}\nrouting{}\n")
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&& (config.services.dae.configFile != "/etc/dae/config.dae"));
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message = ''
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Option `config` and `configFile` could not be set
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at the same time.
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'';
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}
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];
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};
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}
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