1 files changed, 127 insertions, 0 deletions
diff --git a/nixos/modules/services/networking/mxisd.nix b/nixos/modules/services/networking/mxisd.nix
new file mode 100644
index 00000000000..803f0689d1f
--- /dev/null
+++ b/nixos/modules/services/networking/mxisd.nix
@@ -0,0 +1,127 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  isMa1sd =
+    package:
+    lib.hasPrefix "ma1sd" package.name;
+
+  isMxisd =
+    package:
+    lib.hasPrefix "mxisd" package.name;
+
+  cfg = config.services.mxisd;
+
+  server = optionalAttrs (cfg.server.name != null) { inherit (cfg.server) name; }
+        // optionalAttrs (cfg.server.port != null) { inherit (cfg.server) port; };
+
+  baseConfig = {
+    matrix.domain = cfg.matrix.domain;
+    key.path = "${cfg.dataDir}/signing.key";
+    storage = {
+      provider.sqlite.database = if isMa1sd cfg.package
+                                 then "${cfg.dataDir}/ma1sd.db"
+                                 else "${cfg.dataDir}/mxisd.db";
+    };
+  } // optionalAttrs (server != {}) { inherit server; };
+
+  # merges baseConfig and extraConfig into a single file
+  fullConfig = recursiveUpdate baseConfig cfg.extraConfig;
+
+  configFile = if isMa1sd cfg.package
+               then pkgs.writeText "ma1sd-config.yaml" (builtins.toJSON fullConfig)
+               else pkgs.writeText "mxisd-config.yaml" (builtins.toJSON fullConfig);
+
+in {
+  options = {
+    services.mxisd = {
+      enable = mkEnableOption "matrix federated identity server";
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.ma1sd;
+        defaultText = literalExpression "pkgs.ma1sd";
+        description = "The mxisd/ma1sd package to use";
+      };
+
+      dataDir = mkOption {
+        type = types.str;
+        default = "/var/lib/mxisd";
+        description = "Where data mxisd/ma1sd uses resides";
+      };
+
+      extraConfig = mkOption {
+        type = types.attrs;
+        default = {};
+        description = "Extra options merged into the mxisd/ma1sd configuration";
+      };
+
+      matrix = {
+
+        domain = mkOption {
+          type = types.str;
+          description = ''
+            the domain of the matrix homeserver
+          '';
+        };
+
+      };
+
+      server = {
+
+        name = mkOption {
+          type = types.nullOr types.str;
+          default = null;
+          description = ''
+            Public hostname of mxisd/ma1sd, if different from the Matrix domain.
+          '';
+        };
+
+        port = mkOption {
+          type = types.nullOr types.int;
+          default = null;
+          description = ''
+            HTTP port to listen on (unencrypted)
+          '';
+        };
+
+      };
+
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.users.mxisd =
+      {
+        group = "mxisd";
+        home = cfg.dataDir;
+        createHome = true;
+        shell = "${pkgs.bash}/bin/bash";
+        uid = config.ids.uids.mxisd;
+      };
+
+    users.groups.mxisd =
+      {
+        gid = config.ids.gids.mxisd;
+      };
+
+    systemd.services.mxisd = {
+      description = "a federated identity server for the matrix ecosystem";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      serviceConfig = let
+        executable = if isMa1sd cfg.package then "ma1sd" else "mxisd";
+      in {
+        Type = "simple";
+        User = "mxisd";
+        Group = "mxisd";
+        ExecStart = "${cfg.package}/bin/${executable} -c ${configFile}";
+        WorkingDirectory = cfg.dataDir;
+        Restart = "on-failure";
+      };
+    };
+  };
+}