74 lines
2 KiB
Nix
74 lines
2 KiB
Nix
# Portions of this file are sourced from
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# https://github.com/NickCao/flakes/blob/3b03efb676ea602575c916b2b8bc9d9cd13b0d85/modules/gravity/default.nix
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{
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config,
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lib,
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pkgs,
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...
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}:
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with lib;
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let
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cfg = config.services.enthalpy;
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birdPrefix = filter (p: p.type == "bird") cfg.exit.prefix;
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staticPrefix = subtractLists birdPrefix cfg.exit.prefix;
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staticRoutes = map (
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p: "${p.destination} from ${p.source} via fe80::ff:fe00:1 dev enthalpy"
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) staticPrefix;
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in
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{
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options.services.enthalpy.exit = {
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enable = mkEnableOption "netns route leaking";
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prefix = mkOption {
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type = types.listOf (
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types.submodule {
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options = {
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type = mkOption {
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type = types.enum [
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"bird"
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"static"
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];
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default = "static";
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};
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destination = mkOption { type = types.str; };
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source = mkOption {
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type = types.str;
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default = "::/0";
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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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description = ''
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Prefixes to be announced from the default netns to the enthalpy network.
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'';
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};
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};
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config = mkIf (cfg.enable && cfg.exit.enable) {
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services.enthalpy.bird.config = ''
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protocol static {
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ipv6 sadr;
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${
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concatMapStringsSep "\n" (p: ''
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route ${p.destination} from ${p.source} via fe80::ff:fe00:1 dev "enthalpy";
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'') birdPrefix
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}
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}
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'';
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systemd.services.enthalpy-exit = mkIf (staticRoutes != [ ]) {
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = builtins.map (route: "${pkgs.iproute2}/bin/ip -6 route add ${route}") staticRoutes;
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ExecStop = builtins.map (route: "${pkgs.iproute2}/bin/ip -6 route del ${route}") staticRoutes;
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};
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after = [ "network.target" ];
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wants = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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};
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services.enthalpy.services.enthalpy-exit = mkIf (staticRoutes != [ ]) { };
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};
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}
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