From bd44fc0f49a48fcc3d49e09252b7f12a3b80a954 Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Thu, 28 Jun 2018 15:16:37 +0200
Subject: [PATCH] ma hub: init

---
 makefu/2configs/hub.nix | 102 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 makefu/2configs/hub.nix

diff --git a/makefu/2configs/hub.nix b/makefu/2configs/hub.nix
new file mode 100644
index 000000000..a121157d4
--- /dev/null
+++ b/makefu/2configs/hub.nix
@@ -0,0 +1,102 @@
+{ config, lib, pkgs, ... }:
+
+# search also generates ddclient entries for all other logs
+
+with import <stockholm/lib>;
+let
+  ddclientUser = "ddclient";
+  sec = toString <secrets>;
+  nsupdate = import "${sec}/nsupdate-hub.nix";
+  stateDir = "/var/spool/ddclient";
+  cfg = "${stateDir}/cfg";
+  ext-if = config.makefu.server.primary-itf;
+  ddclientPIDFile = "${stateDir}/ddclient.pid";
+
+  # TODO: correct cert generation requires a `real` internet ip address
+
+  gen-cfg = dict: ''
+    ssl=yes
+    cache=${stateDir}/ddclient.cache
+    pid=${ddclientPIDFile}
+    ${concatStringsSep "\n" (mapAttrsToList (user: pass: ''
+
+      protocol=dyndns2
+      use=web, web=http://ipv4.nsupdate.info/myip
+      ssl=yes
+      server=ipv4.nsupdate.info
+      login=${user}
+      password='${pass}'
+      ${user}
+
+    '') dict)}
+  '';
+
+in {
+  users.extraUsers = singleton {
+    name = ddclientUser;
+    uid = genid "ddclient";
+    description = "ddclient daemon user";
+    home = stateDir;
+    createHome = true;
+  };
+
+  systemd.services = {
+    redis.serviceConfig.LimitNOFILE=10032;
+    ddclient-nsupdate-uhub = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "ip-up.target" ];
+      serviceConfig = {
+        Type = "forking";
+        User = ddclientUser;
+        PIDFile = ddclientPIDFile;
+        ExecStartPre = pkgs.writeDash "init-nsupdate" ''
+          cp -vf ${pkgs.writeText "ddclient-config" (gen-cfg nsupdate)} ${cfg}
+          chmod 700 ${cfg}
+        '';
+        ExecStart = "${pkgs.ddclient}/bin/ddclient -verbose -daemon 1 -noquiet -file ${cfg}";
+      };
+    };
+  };
+
+  networking.firewall.extraCommands = ''
+    iptables -A PREROUTING -t nat -i ${ext-if} -p tcp --dport 411 -j REDIRECT --to-port 1511
+  '';
+  systemd.services.uhub.serviceConfig = {
+    PrivateTmp = true;
+    PermissionsStartOnly = true;
+    ExecStartPre = pkgs.writeDash "uhub-pre" ''
+      cp ${toString <secrets/wildcard.krebsco.de.crt>} /tmp/uhub.crt
+      cp ${toString <secrets/wildcard.krebsco.de.key>} /tmp/uhub.key
+      cp ${toString <secrets/uhub.sql>} /tmp/uhub.sql
+      chown uhub /tmp/*
+    '';
+
+  };
+  services.uhub = {
+    enable = true;
+    port = 1511;
+    enableTLS = true;
+    hubConfig = ''
+      hub_name = "krebshub"
+      tls_certificate = /tmp/uhub.crt
+      tls_private_key = /tmp/uhub.key
+      registered_users_only  = true
+    '';
+    plugins = {
+      welcome = {
+        enable = true;
+        motd = "shareit";
+        rules = "1. Don't be an asshole";
+      };
+      history = {
+        enable = true;
+      };
+      authSqlite = {
+        enable = true;
+        file = "/tmp/uhub.sql";
+      };
+
+    };
+  };
+  networking.firewall.allowedTCPPorts = [ 411 1511 ];
+}