vueko/coturn: Use upstream module

Fixes #53.

machines/vueko/secrets.yaml

@@ -1,16 +1,17 @@
 murmur-superuser: ENC[AES256_GCM,data:jTVEa1KmbGAIxxFS2/uIlDCnnJTtGmKFZQ==,iv:YJIfcXlgKEwIRzFEY94dgReNjWZqLAqL0Rb6TG4IHIE=,tag:MVzaRkb24QyyNyFCEMwmzQ==,type:str]
 wg-home-private-key: ENC[AES256_GCM,data:/RHNF6Zw6CTWa9ahUhGWRfkR8KIj+HdqUIojA1w6HQBFbZ/+Vo+CcYTYO5I=,iv:2sDH1P3VRjmLw6Ilkq0rw/hossHrNWP5uRvX9yr5fLE=,tag:KIT5GCfXuhg6RjA8+Nmtnw==,type:str]
-turn-static-auth-secret: ENC[AES256_GCM,data:+E3Fa4X9uXg58xB7lukEdWQeW4Wj+gAKt54FSqL80+k3C/R2AGc0BC/ThP2we5lSY/kfz8W1Wk67ExEDthqlCaG84gbRRnkZ2CkFOe3QQGknHx/n,iv:MwxVxQJHiqrps0eKiXl+OxSrL1Zfo3q5zQXOeR0JofA=,tag:EUC+ZOSJMIb4QEHEFvsyZA==,type:str]
+turn-static-auth-secret: ENC[AES256_GCM,data:Nz94xw5sBuAgEqVpwiV44Rd3km16H46X6jVf2gzE+mbbVt2TXExv/7yegQtXI++eBo6q4wbpOfxwl0b1Pvsa/A==,iv:HSdqj43Vmq5McWAbMoxeNUa38UD75Xe4PJEwY5mKjOQ=,tag:cFpFsVwhisWt7JMMzJemCA==,type:str]
 sops:
     kms: []
     gcp_kms: []
     azure_kv: []
     hc_vault: []
-    lastmodified: '2021-04-07T10:20:05Z'
-    mac: ENC[AES256_GCM,data:xfNk5YRfiQSSSxc/br7ncVSdmuDfbHandwXsLDZlIrh3QWc4DjZ1rqCRiLV8XbRntWGywRRwes6iRn2bT0MCXN+ewrcs0HOS2YjT+g8iDf2fsqZAIU34y0aXMwJTYyHyghO/naWGwb3aGAHPfuWbPg3d4xaCHwnej+nMplTkdQs=,iv:QvisjybnpHaoBdc87MPRQuu5JVPMRNV6UX19oOljv3o=,tag:E9d5/Sa5EOvqTxNYk4NxkA==,type:str]
+    age: []
+    lastmodified: "2021-12-01T16:49:21Z"
+    mac: ENC[AES256_GCM,data:wLy9If4/YdAVILwz1vSzCQsjG0U8Z2GvpME/+xW9pS/xmKoXTwaxP2QQpy8ReTmtikpbKS327j5pz2dSMiweqaUFSVb1nIEvUFxV4PKnxf5ubJalPZAGa82Cw0aassMKz0IAd8rDF/xK9RoB3ayRluYKAP/qnbEcFrys0BokGE0=,iv:Yw3tG1J135QImJqXEGrpSq3k8Lo++uUXfEKmCCNCpDg=,tag:FChnsJ1qIzalpVypMIilrg==,type:str]
     pgp:
-    -   created_at: '2021-04-06T11:13:54Z'
-        enc: |
+        - created_at: "2021-04-06T11:13:54Z"
+          enc: |
             -----BEGIN PGP MESSAGE-----
 
             hQIMAwDgSONkM+d4ARAAxn8UVtRKn0s+wpuUBpk3cCwSSa3te4BjHshyNrI3TyZ9
@@ -28,9 +29,9 @@ sops:
             XDcaU74seCR/EeiuMWfEeNasu6EULEG+AKOnG9s8zoPp5730EG9v8r4q7ma89jc=
             =JlIF
             -----END PGP MESSAGE-----
-        fp: 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
-    -   created_at: '2021-04-06T11:13:54Z'
-        enc: |
+          fp: 47E7559E037A35652DBBF8AA8D3C82F9F309F8EC
+        - created_at: "2021-04-06T11:13:54Z"
+          enc: |
             -----BEGIN PGP MESSAGE-----
 
             hQIMAzy5uO/X/tdJAQ/9Hx6h7IIjr4vwFPC3UCx07rt/lljWHwqA8d8bN3VIcVWJ
@@ -48,6 +49,6 @@ sops:
             mSfsOU6k+KcWtXYpurZr31zUVK626Re0fsr5XbPSj+9G
             =Grqu
             -----END PGP MESSAGE-----
-        fp: BB046D773F54739757553A053CB9B8EFD7FED749
+          fp: BB046D773F54739757553A053CB9B8EFD7FED749
     unencrypted_suffix: _unencrypted
-    version: 3.6.0
+    version: 3.7.1

machines/vueko/services/coturn.nix

@@ -1,68 +1,10 @@
-# The NixOS module does not support extending the configuration with secrets.
 { config, lib, pkgs, ... }:
 let
+  cfg = config.services.coturn;
+
   fqdn = "turn.sbruder.de";
 
   ipAddresses = [ "195.201.139.15" "2a01:4f8:1c1c:4397::" ];
-
-  cfg = {
-    # config adapted from synapse’s turn howto:
-    # https://github.com/matrix-org/synapse/blob/develop/docs/turn-howto.md
-    use-auth-secret = true;
-    realm = fqdn;
-
-    # not needed for VoIP
-    no-tcp-relay = true;
-
-    no-cli = true;
-
-    listening-port = 3478;
-
-    tls-listening-port = 5349;
-    cert = "/run/turnserver/fullchain.pem";
-    pkey = "/run/turnserver/key.pem";
-
-    min-port = 49160;
-    max-port = 49200;
-
-    listening-ip = ipAddresses;
-    relay-ip = ipAddresses;
-
-    pidfile = "/run/turnserver/turnserver.pid";
-
-    # logging
-    no-stdout-log = true;
-    syslog = true;
-
-    denied-peer-ip = [
-      "10.0.0.0-10.255.255.255"
-      "172.16.0.0-172.31.255.255"
-      "192.168.0.0-192.168.255.255"
-    ];
-
-    user-quota = 12;
-    total-quota = 1200;
-  };
-
-  extraConfigFiles = with config.sops.secrets; [
-    turn-static-auth-secret.path
-  ];
-
-  configToText = config: lib.concatStrings
-    (lib.mapAttrsToList
-      (name: value:
-        if lib.isList value
-        then
-          lib.concatMapStrings
-            (value: "${name}=${toString value}\n")
-            value
-        else
-          (if lib.isBool value
-          then "${name}\n"
-          else "${name}=${toString value}\n"))
-      config);
-
-  configFile = pkgs.writeText "turnserver.conf" (configToText cfg);
 in
 {
   sops.secrets.turn-static-auth-secret = {
@@ -70,37 +12,46 @@ in
     sopsFile = ../secrets.yaml;
   };
 
-  users.users.turnserver = {
-    uid = config.ids.uids.turnserver;
-  };
-  users.groups.turnserver = {
-    gid = config.ids.gids.turnserver;
-    members = [ "turnserver" ];
+  services.coturn = {
+    enable = true;
+
+    # config adapted from synapse’s turn howto:
+    # https://github.com/matrix-org/synapse/blob/develop/docs/turn-howto.md
+    use-auth-secret = true;
+    realm = fqdn;
+    # the NixOS module does not support loading the secret from a dedicated file
+    static-auth-secret-file = config.sops.secrets.turn-static-auth-secret.path;
+
+    no-tcp-relay = true;
+
+    cert = "/run/turnserver/fullchain.pem";
+    pkey = "/run/turnserver/key.pem";
+
+    min-port = 49160;
+    max-port = 49200;
+
+    listening-ips = ipAddresses;
+    relay-ips = ipAddresses;
+
+    no-cli = true;
+
+    extraConfig = ''
+      denied-peer-ip=10.0.0.0-10.255.255.255
+      denied-peer-ip=192.168.0.0-192.168.255.255
+      denied-peer-ip=172.16.0.0-172.31.255.255
+
+      user-quota=12
+      total-quota=1200
+    '';
   };
 
   systemd.services.coturn = {
-    after = [ "network-online.target" "acme-finished-${fqdn}.target" ];
-    wants = [ "network-online.target" ];
-    wantedBy = [ "multi-user.target" ];
-
+    after = [ "acme-finished-${fqdn}.target" ];
     serviceConfig = {
-      Type = "simple";
-      ExecStartPre = [
-        ("!" + (pkgs.writeShellScript "coturn-setup-tls" ''
-          cp ${config.security.acme.certs."${fqdn}".directory}/{fullchain,key}.pem /run/turnserver/
-          chgrp turnserver /run/turnserver/{fullchain,key}.pem
-        ''))
-        (pkgs.writeShellScript "coturn-setup-config" ''
-          ${pkgs.coreutils}/bin/cat ${configFile} ${lib.concatStringsSep " " extraConfigFiles} > /run/turnserver/turnserver.conf
-        '')
-      ];
-      ExecStart = "${pkgs.coturn}/bin/turnserver -c /run/turnserver/turnserver.conf";
-      Restart = "on-abort";
-      RuntimeDirectory = "turnserver";
-      RuntimeDirectoryMode = "0750";
-      User = "turnserver";
-      Group = "turnserver";
-      SupplementaryGroups = lib.singleton "keys";
+      ExecStartPre = lib.singleton "!${pkgs.writeShellScript "coturn-setup-tls" ''
+        cp ${config.security.acme.certs."${fqdn}".directory}/{fullchain,key}.pem /run/turnserver/
+        chgrp turnserver /run/turnserver/{fullchain,key}.pem
+      ''}";
     };
   };
 
@@ -116,8 +67,8 @@ in
   };
 
   networking.firewall = {
-    allowedTCPPorts = [ cfg.listening-port cfg.tls-listening-port ];
-    allowedUDPPorts = [ cfg.listening-port cfg.tls-listening-port ];
+    allowedTCPPorts = with cfg; [ listening-port alt-listening-port tls-listening-port ];
+    allowedUDPPorts = with cfg; [ listening-port alt-listening-port tls-listening-port ];
 
     allowedUDPPortRanges = lib.singleton {
       from = cfg.min-port;