100 lines
3.1 KiB
Nix
100 lines
3.1 KiB
Nix
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{ pkgs, lib, config, ... }:
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let
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cfg = config.cloud.conduit.heisenbridge;
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cfgConduit = config.cloud.conduit;
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in
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with lib; {
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options.cloud.conduit.heisenbridge = {
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enable = mkEnableOption "Enable heisenbridge for conduit";
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package = mkPackageOption pkgs "heisenbridge" { };
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appserviceFile = mkOption {
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type = types.str;
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description = "The path to the appservice config file";
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};
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port = mkOption {
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type = types.nullOr types.int;
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description = "The port to listen to. Leave blank to just use the appserviceFile's configuration";
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default = null;
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};
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};
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config = mkIf cfg.enable (
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let
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cfgFile = if cfg.port == null then cfg.appserviceFile else
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pkgs.runCommand "heisenbridge-config" { } ''
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cp ${cfg.appserviceFile} $out
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${pkgs.sd}/bin/sd '^url: .*$' "url: http://127.0.0.1:${cfg.port}"
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'';
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listenArgs = lists.optionals (cfg.port != null) [ "--listen-port" (toString cfg.port) ];
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in
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{
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systemd.services.heisenbridge = {
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description = "Matrix<->IRC bridge";
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before = [ "matrix-synapse.service" ]; # So the registration file can be used by Synapse
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wantedBy = [ "multi-user.target" ];
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serviceConfig = rec {
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Type = "simple";
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ExecStart = lib.concatStringsSep " " (
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[
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"${cfg.package}/bin/heisenbridge"
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"-v"
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"--config"
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cfgFile
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]
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++ listenArgs
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++ [
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# Homeserver
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"https://${toString cfgConduit.host}"
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]
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);
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# Hardening options
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User = "heisenbridge";
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Group = "heisenbridge";
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RuntimeDirectory = "heisenbridge";
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RuntimeDirectoryMode = "0700";
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StateDirectory = "heisenbridge";
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StateDirectoryMode = "0755";
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ProtectSystem = "strict";
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ProtectHome = true;
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PrivateTmp = true;
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PrivateDevices = true;
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ProtectKernelTunables = true;
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ProtectControlGroups = true;
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RestrictSUIDSGID = true;
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PrivateMounts = true;
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ProtectKernelModules = true;
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ProtectKernelLogs = true;
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ProtectHostname = true;
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ProtectClock = true;
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ProtectProc = "invisible";
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ProcSubset = "pid";
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RestrictNamespaces = true;
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RemoveIPC = true;
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UMask = "0077";
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CapabilityBoundingSet = [ "CAP_CHOWN" ] ++ optional (cfg.port != null && cfg.port < 1024) "CAP_NET_BIND_SERVICE";
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AmbientCapabilities = CapabilityBoundingSet;
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NoNewPrivileges = true;
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LockPersonality = true;
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RestrictRealtime = true;
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SystemCallFilter = [ "@system-service" "~@privileged" "@chown" ];
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SystemCallArchitectures = "native";
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RestrictAddressFamilies = "AF_INET AF_INET6";
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};
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};
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users.groups.heisenbridge = { };
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users.users.heisenbridge = {
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description = "Service user for the Heisenbridge";
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group = "heisenbridge";
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isSystemUser = true;
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};
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}
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);
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}
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