nixos/mycelium: init

nixos/modules/module-list.nix

@@ -1034,6 +1034,7 @@
   ./services/networking/multipath.nix
   ./services/networking/murmur.nix
   ./services/networking/mxisd.nix
+  ./services/networking/mycelium.nix
   ./services/networking/namecoind.nix
   ./services/networking/nar-serve.nix
   ./services/networking/nat.nix

nixos/modules/services/networking/mycelium.nix

@@ -0,0 +1,126 @@
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.services.mycelium;
+in
+{
+  options.services.mycelium = {
+    enable = lib.mkEnableOption "mycelium network";
+    peers = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      description = ''
+        List of peers to connect to in the format quic://1.2.3.4:9651.
+        If addHostedPublicNodes is set to true, the hosted public nodes will be added to this list.
+      '';
+      default = [];
+    };
+    keyFile = lib.mkOption {
+      type = lib.types.nullOr lib.types.path;
+      default = null;
+      description = ''
+        optional path to a keyFile, if unset the default location (/var/lib/mycelium/key) will be used
+        If this key does not exist, it will be generated
+      '';
+    };
+    openFirewall = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Open the firewall for mycelium";
+    };
+    package = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.mycelium;
+      defaultText = lib.literalExpression ''"''${pkgs.mycelium}"'';
+      description = "The mycelium package to use";
+    };
+    addHostedPublicNodes = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = ''
+        add the hosted peers from https://github.com/threefoldtech/mycelium#hosted-public-nodes
+      '';
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    networking.firewall.allowedTCPPorts = lib.optionals cfg.openFirewall [ 9651 ];
+    networking.firewall.allowedUDPPorts = lib.optionals cfg.openFirewall [ 9650 9651 ];
+
+    systemd.services.mycelium = {
+      description = "Mycelium network";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      restartTriggers = [
+        cfg.keyFile
+      ];
+
+      unitConfig.Documentation = "https://github.com/threefoldtech/mycelium";
+
+      serviceConfig = {
+        User = "mycelium";
+        DynamicUser = true;
+        StateDirectory = "mycelium";
+        ProtectHome = true;
+        ProtectSystem = true;
+        LoadCredential = lib.mkIf (cfg.keyFile != null) "keyfile:${cfg.keyFile}";
+        SyslogIdentifier = "mycelium";
+        AmbientCapabilities = [ "CAP_NET_ADMIN" ];
+        MemoryDenyWriteExecute = true;
+        ProtectControlGroups = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        RestrictAddressFamilies = "AF_UNIX AF_INET AF_INET6 AF_NETLINK";
+        RestrictNamespaces = true;
+        RestrictRealtime = true;
+        SystemCallArchitectures = "native";
+        SystemCallFilter = [ "@system-service" "~@privileged @keyring" ];
+        ExecStart = lib.concatStringsSep " " ([
+          (lib.getExe cfg.package)
+          (if (cfg.keyFile != null) then
+            "--key-file \${CREDENTIALS_DIRECTORY}/keyfile" else
+            "--key-file %S/mycelium/key.bin"
+          )
+          "--tun-name" "mycelium"
+        ] ++
+          (lib.optional (cfg.addHostedPublicNodes || cfg.peers != []) "--peers")
+        ++ cfg.peers ++ (lib.optionals cfg.addHostedPublicNodes [
+          "tcp://188.40.132.242:9651" # DE 01
+          "tcp://[2a01:4f8:221:1e0b::2]:9651"
+          "quic://188.40.132.242:9651"
+          "quic://[2a01:4f8:221:1e0b::2]:9651"
+
+          "tcp://136.243.47.186:9651" # DE 02
+          "tcp://[2a01:4f8:212:fa6::2]:9651"
+          "quic://136.243.47.186:9651"
+          "quic://[2a01:4f8:212:fa6::2]:9651"
+
+          "tcp://185.69.166.7:9651" # BE 03
+          "tcp://[2a02:1802:5e:0:8478:51ff:fee2:3331]:9651"
+          "quic://185.69.166.7:9651"
+          "quic://[2a02:1802:5e:0:8478:51ff:fee2:3331]:9651"
+
+          "tcp://185.69.166.8:9651" # BE 04
+          "tcp://[2a02:1802:5e:0:8c9e:7dff:fec9:f0d2]:9651"
+          "quic://185.69.166.8:9651"
+          "quic://[2a02:1802:5e:0:8c9e:7dff:fec9:f0d2]:9651"
+
+          "tcp://65.21.231.58:9651" # FI 05
+          "tcp://[2a01:4f9:6a:1dc5::2]:9651"
+          "quic://65.21.231.58:9651"
+          "quic://[2a01:4f9:6a:1dc5::2]:9651"
+
+          "tcp://65.109.18.113:9651" # FI 06
+          "tcp://[2a01:4f9:5a:1042::2]:9651"
+          "quic://65.109.18.113:9651"
+          "quic://[2a01:4f9:5a:1042::2]:9651"
+        ]));
+        Restart = "always";
+        RestartSec = 5;
+        TimeoutStopSec = 5;
+      };
+    };
+  };
+  meta = {
+    maintainers = with lib.maintainers; [ flokli lassulus ];
+  };
+}
+