From 522c8a27dbde0d337c40aa05597c43df05f5ff8f Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Thu, 24 Feb 2022 20:59:41 +0100
Subject: surtr: synapse.li: ...

---
 hosts/surtr/default.nix  | 12 ++++++-
 hosts/surtr/http.nix     |  4 ++-
 hosts/surtr/matrix.nix   | 85 ++++++++++++++++++++++++++++++++++++++++++++++++
 hosts/surtr/postgres.nix | 20 ++++++++++++
 hosts/surtr/zfs.nix      | 24 +++++++++++---
 5 files changed, 138 insertions(+), 7 deletions(-)
 create mode 100644 hosts/surtr/matrix.nix
 create mode 100644 hosts/surtr/postgres.nix

diff --git a/hosts/surtr/default.nix b/hosts/surtr/default.nix
index add50653..7ab3199b 100644
--- a/hosts/surtr/default.nix
+++ b/hosts/surtr/default.nix
@@ -2,7 +2,7 @@
 {
   imports = with flake.nixosModules.systemProfiles; [
     qemu-guest openssh rebuild-machines zfs
-    ./zfs.nix ./dns ./tls ./http.nix ./bifrost
+    ./zfs.nix ./dns ./tls ./http.nix ./bifrost ./matrix.nix ./postgres.nix
   ];
 
   config = {
@@ -139,5 +139,15 @@
       automatic = true;
       options = "--delete-older-than 30d";
     };
+
+    security.dhparams = {
+      enable = true;
+      defaultBitSize = 4096;
+      params = {
+        nginx = {};
+        matrix-synapse = {};
+      };
+      stateful = true;
+    };
   };
 }
diff --git a/hosts/surtr/http.nix b/hosts/surtr/http.nix
index fb22492f..a7b61d81 100644
--- a/hosts/surtr/http.nix
+++ b/hosts/surtr/http.nix
@@ -14,6 +14,7 @@
       recommendedGzipSettings = true;
       recommendedProxySettings = true;
       recommendedTlsSettings = true;
+      sslDhparam = config.security.dhparams.params.nginx.path;
       commonHttpConfig = ''
         ssl_ecdh_curve X25519:prime256v1:secp521r1:secp384r1;
 
@@ -25,6 +26,8 @@
 
         access_log syslog:server=unix:/dev/log main;
         error_log syslog:server=unix:/dev/log info;
+
+        client_body_temp_path   /run/nginx-client-bodies;
       '';
       additionalModules = with pkgs.nginxModules; [ dav pam ];
       virtualHosts = {
@@ -45,7 +48,6 @@
             dav_access      user:rw;
             autoindex on;
 
-            client_body_temp_path   /run/nginx-client-bodies;
             client_max_body_size    0;
             create_full_put_path    on;
 
diff --git a/hosts/surtr/matrix.nix b/hosts/surtr/matrix.nix
new file mode 100644
index 00000000..315490cb
--- /dev/null
+++ b/hosts/surtr/matrix.nix
@@ -0,0 +1,85 @@
+{ config, ... }:
+{
+  config = {
+    services.matrix-synapse = {
+      enable = true;
+      enable_metrics = true;
+
+      enable_registration = false;
+      allow_guest_access = false;
+
+      server_name = "synapse.li";
+
+      listeners = [
+        { bind_address = "localhost";
+          port = 8008;
+          resources = [
+            { names = [ "client" ];
+              compress = true;
+            }
+            { names = [ "federation" ];
+              compress = false;
+            }
+          ];
+          tls = false;
+          type = "http";
+          x_forwarded = true;
+        }
+      ];
+
+      tls_certificate_path = "/run/credentials/matrix-synapse/synapse.li.pem";
+      tls_private_key_path = "/run/credentials/matrix-synapse/synapse.li.key.pem";
+      tls_dh_params_path = config.security.dhparams.params.matrix-synapse.path;
+    };
+
+    systemd.services.matrix-synapse = {
+      serviceConfig = {
+        LoadCredential = [
+          "synapse.li.key.pem:${config.security.acme.certs."synapse.li".directory}/key.pem"
+          "synapse.li.pem:${config.security.acme.certs."synapse.li".directory}/fullchain.pem"
+        ];
+      };
+    };
+
+    services.nginx = {
+      recommendedProxySettings = true;
+
+      upstreams."matrix-synapse" = {
+        servers = {
+          "127.0.0.1:8008" = {};
+        };
+      };
+
+      virtualHosts."synapse.li" = {
+        forceSSL = true;
+        sslCertificate = "/run/credentials/nginx.service/synapse.li.pem";
+        sslCertificateKey = "/run/credentials/nginx.service/synapse.li.key.pem";
+        sslTrustedCertificate = "/run/credentials/nginx.service/synapse.li.chain.pem";
+        listen = [
+          { addr = "0.0.0.0"; port = 443; ssl = true; }
+          { addr = "[::]"; port = 443; ssl = true; }
+          { addr = "0.0.0.0"; port = 8448; ssl = true; }
+          { addr = "[::]"; port = 8448; ssl = true; }
+        ];
+        locations = let
+          synapse = {
+            proxyPass = "http://matrix-synapse";
+            extraConfig = ''
+              add_header Strict-Transport-Security "max-age=63072000" always;
+            '';
+          };
+        in { "/_matrix" = synapse; "/_synapse/client" = synapse; };
+      };
+    };
+
+    systemd.services.nginx = {
+      serviceConfig = {
+        LoadCredential = [
+          "synapse.li.key.pem:${config.security.acme.certs."synapse.li".directory}/key.pem"
+          "synapse.li.pem:${config.security.acme.certs."synapse.li".directory}/fullchain.pem"
+          "synapse.li.chain.pem:${config.security.acme.certs."synapse.li".directory}/chain.pem"
+        ];
+      };
+    };
+  };
+}
diff --git a/hosts/surtr/postgres.nix b/hosts/surtr/postgres.nix
new file mode 100644
index 00000000..e8ea73be
--- /dev/null
+++ b/hosts/surtr/postgres.nix
@@ -0,0 +1,20 @@
+{ pkgs, ... }:
+{
+  config = {
+    services.postgresql = {
+      enable = true;
+      package = pkgs.postgresql_14;
+      ensureDatabases = [
+        "matrix-synapse"
+      ];
+      ensureUsers = [
+        { name = "matrix-synapse";
+          ensurePermissions = {
+            "DATABASE \"matrix-synapse\"" = "ALL PRIVILEGES";
+            "ALL TABLES IN SCHEMA public" = "ALL PRIVILEGES";
+          };
+        }
+      ];
+    };
+  };
+}
diff --git a/hosts/surtr/zfs.nix b/hosts/surtr/zfs.nix
index 3a69fd96..736d5cc9 100644
--- a/hosts/surtr/zfs.nix
+++ b/hosts/surtr/zfs.nix
@@ -35,11 +35,25 @@
           fsType = "zfs";
         };
 
-      "/srv" =
-        { device = "surtr/safe/srv";
-          fsType = "zfs";
-          options = [ "zfsutil" ];
-        };
+      # "/srv" =
+      #   { device = "surtr/safe/srv";
+      #     fsType = "zfs";
+      #     options = [ "zfsutil" ];
+      #   };
+    };
+
+    boot.postBootCommands = ''
+      echo "=== STARTING ZPOOL IMPORT ==="
+      ${pkgs.zfs}/bin/zpool import -a -N -d /dev
+      ${pkgs.zfs}/bin/zpool status
+      ${pkgs.zfs}/bin/zfs mount -a
+      echo "=== ZPOOL IMPORT COMPLETE ==="
+    '';
+
+    system.activationScripts = {
+      zfsMount.text = ''
+        ${pkgs.zfs}/bin/zfs mount -a
+      '';
     };
 
     services.zfssnap.enable = true;
-- 
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