Merge branch 'master' of prism:stockholm

20 files changed, 327 insertions, 226 deletions

diff --git a/Makefile b/Makefile
index 0a9b4f29f..f25830789 100644
--- a/Makefile
+++ b/Makefile
@@ -102,7 +102,13 @@ ifneq ($(ssh),)
 populate: populate-flags += --ssh=$(ssh)
 endif
 populate:
-	$(call evaluate,config.krebs.build.source) --json --strict | \
+	nix-instantiate \
+		--eval \
+		--json \
+		--readonly-mode \
+		--show-trace \
+		--strict \
+		$(LOGNAME)/1systems/$(system)/source.nix | \
 	populate $(populate-target) $(populate-flags)
 
 # usage: make pkgs.populate
diff --git a/krebs/1systems/puyak/config.nix b/krebs/1systems/puyak/config.nix
index 5e5f6cdb2..bcf63dc4b 100644
--- a/krebs/1systems/puyak/config.nix
+++ b/krebs/1systems/puyak/config.nix
@@ -5,6 +5,9 @@
     <stockholm/krebs>
     <stockholm/krebs/2configs>
     <stockholm/krebs/2configs/secret-passwords.nix>
+
+    <stockholm/krebs/2configs/repo-sync.nix>
+    <stockholm/krebs/2configs/shared-buildbot.nix>
   ];
 
   krebs.build.host = config.krebs.hosts.puyak;
@@ -27,6 +30,11 @@
     "/boot" = {
       device = "/dev/sda2";
     };
+    "/bku" = {
+      device = "/dev/mapper/pool-bku";
+      fsType = "btrfs";
+      options = ["defaults" "noatime" "ssd" "compress=lzo"];
+    };
     "/home" = {
       device = "/dev/mapper/pool-home";
       fsType = "btrfs";
diff --git a/krebs/1systems/wolf/config.nix b/krebs/1systems/wolf/config.nix
index ba897a26e..32e7bd49d 100644
--- a/krebs/1systems/wolf/config.nix
+++ b/krebs/1systems/wolf/config.nix
@@ -11,7 +11,6 @@ in
     <stockholm/krebs/2configs/central-stats-client.nix>
     <stockholm/krebs/2configs/save-diskspace.nix>
 
-    <stockholm/krebs/2configs/cgit-mirror.nix>
     <stockholm/krebs/2configs/graphite.nix>
     <stockholm/krebs/2configs/repo-sync.nix>
     <stockholm/krebs/2configs/shared-buildbot.nix>
diff --git a/krebs/2configs/backup.nix b/krebs/2configs/backup.nix
new file mode 100644
index 000000000..7ee438784
--- /dev/null
+++ b/krebs/2configs/backup.nix
@@ -0,0 +1,21 @@
+{ config, lib, ... }:
+with import <stockholm/lib>;
+{
+  krebs.backup.plans = {
+  } // mapAttrs (_: recursiveUpdate {
+    snapshots = {
+      daily    = { format = "%Y-%m-%d"; retain =  7; };
+      weekly   = { format = "%YW%W";    retain =  4; };
+      monthly  = { format = "%Y-%m";    retain = 12; };
+      yearly   = { format = "%Y";                    };
+    };
+  }) {
+    wolf-share-puyak = {
+      method = "pull";
+      src = { host = config.krebs.hosts.wolf;  path = "/home/share"; };
+      dst = { host = config.krebs.hosts.puyak; path = "/bku/wolf-share"; };
+      startAt = "03:00";
+    };
+  };
+}
+
diff --git a/krebs/2configs/cgit-mirror.nix b/krebs/2configs/cgit-mirror.nix
deleted file mode 100644
index c2326a5cc..000000000
--- a/krebs/2configs/cgit-mirror.nix
+++ /dev/null
@@ -1,45 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with import <stockholm/lib>;
-let
-  rules = with git; singleton {
-    user = [ wolf-repo-sync ];
-    repo = [ stockholm-mirror ];
-    perm = push ''refs/*'' [ non-fast-forward create delete merge ];
-  };
-
-  stockholm-mirror = {
-    public = true;
-    name = "stockholm-mirror";
-    cgit.desc = "mirror for all stockholm branches";
-    hooks = {
-      post-receive = pkgs.git-hooks.irc-announce {
-        nick = config.networking.hostName;
-        verbose = false;
-        channel = "#retiolum";
-        server = "ni.r";
-      };
-    };
-  };
-
-  wolf-repo-sync = {
-    name = "wolf-repo-sync";
-    mail = "spam@krebsco.de";
-    # TODO put git-sync pubkey somewhere more appropriate
-    pubkey = ''ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCwuAZB3wtAvBJFYh+gWdyGaZU4mtqM2dFXmh2rORlbXeh02msu1uv07ck1VKkQ4LgvCBcBsAOeVa1NTz99eLqutwgcqMCytvRNUCibcoEWwHObsK53KhDJj+zotwlFhnPPeK9+EpOP4ngh/tprJikttos5BwBwe2K+lfiid3fmVPZcTTYa77nCwijimMvWEx6CEjq1wiXMUc4+qcEn8Swbwomz/EEQdNE2hgoC3iMW9RqduTFdIJWnjVi0KaxenX9CvQRGbVK5SSu2gwzN59D/okQOCP6+p1gL5r3QRHSLSSRiEHctVQTkpKOifrtLZGSr5zArEmLd/cOVyssHQPCX repo-sync@wolf'';
-  };
-
-in {
-  krebs.users.wolf-repo-sync = wolf-repo-sync;
-  krebs.git = {
-    enable = true;
-    cgit = {
-      settings = {
-        root-title = "Shared Repos";
-        root-desc = "keep on krebsing";
-      };
-    };
-    inherit rules;
-    repos.stockholm-mirror = stockholm-mirror;
-  };
-}
diff --git a/krebs/2configs/default.nix b/krebs/2configs/default.nix
index 901516e50..daf9bd9d0 100644
--- a/krebs/2configs/default.nix
+++ b/krebs/2configs/default.nix
@@ -2,6 +2,9 @@
 
 with import <stockholm/lib>;
 {
+  imports = [
+    ./backup.nix
+  ];
   krebs.enable = true;
   krebs.tinc.retiolum.enable = true;
 
diff --git a/krebs/2configs/repo-sync.nix b/krebs/2configs/repo-sync.nix
index 637a26e3c..157a30e69 100644
--- a/krebs/2configs/repo-sync.nix
+++ b/krebs/2configs/repo-sync.nix
@@ -1,31 +1,80 @@
 { config, lib, pkgs, ... }:
 
-with lib;
-{
-  krebs.repo-sync = let
-    # TODO addMirrorURL function
-    mirror = "git@wolf:stockholm-mirror";
-  in {
-    enable = true;
-    repos.stockholm = {
-      branches = {
-        makefu = {
-          origin.url = http://cgit.gum/stockholm ;
-          mirror.url = mirror;
+with import <stockholm/lib>;
+
+let
+  mirror = "git@${config.networking.hostName}:";
+
+  defineRepo = name: announce: let
+    repo = {
+      public = true;
+      name = mkDefault "${name}";
+      cgit.desc = mkDefault "mirror for ${name}";
+      cgit.section = mkDefault "mirror";
+      hooks = mkIf announce (mkDefault {
+        post-receive = pkgs.git-hooks.irc-announce {
+          nick = config.networking.hostName;
+          verbose = false;
+          channel = "#retiolum";
+          server = "ni.r";
+          branches = [ "newest" ];
         };
-        tv = {
-          origin.url = http://cgit.ni.r/stockholm;
-          mirror.url = mirror;
+      });
+    };
+  in {
+    rules = with git; singleton {
+      user = with config.krebs.users; [
+        config.krebs.users."${config.networking.hostName}-repo-sync"
+      ];
+      repo = [ repo ];
+      perm = push ''refs/*'' [ non-fast-forward create delete merge ];
+    };
+    repos."${name}" = repo;
+  };
+
+  sync-retiolum = name:
+    {
+      krebs.repo-sync.repos.${name} = {
+        branches = {
+          makefu = {
+            origin.url = "http://cgit.gum/${name}";
+            mirror.url = "${mirror}${name}";
+          };
+          tv = {
+            origin.url = "http://cgit.ni.r/${name}";
+            mirror.url = "${mirror}${name}";
+          };
+          nin = {
+            origin.url = "http://cgit.onondaga.r/${name}";
+            mirror.url = "${mirror}${name}";
+          };
+          lassulus = {
+            origin.url = "http://cgit.lassul.us/${name}";
+            mirror.url = "${mirror}${name}";
+          };
         };
-        lassulus = {
-          origin.url = http://cgit.prism/stockholm ;
-          mirror.url = mirror;
+        latest = {
+          url = "${mirror}${name}";
+          ref = "heads/newest";
         };
       };
-      latest = {
-        url = mirror;
-        ref = "heads/master";
+      krebs.git = defineRepo name true;
+    };
+
+in {
+  krebs.repo-sync = {
+    enable = true;
+  };
+  krebs.git = {
+    enable = mkDefault true;
+    cgit = {
+      settings = {
+        root-title = "Shared Repos";
+        root-desc = "keep on krebsing";
       };
     };
   };
+  imports = [
+    (sync-retiolum "stockholm")
+  ];
 }
diff --git a/krebs/2configs/shared-buildbot.nix b/krebs/2configs/shared-buildbot.nix
index dd430b7c0..a9e5afc75 100644
--- a/krebs/2configs/shared-buildbot.nix
+++ b/krebs/2configs/shared-buildbot.nix
@@ -1,30 +1,34 @@
 { lib, config, pkgs, ... }:
-# The buildbot config is self-contained and currently provides a way 
+# The buildbot config is self-contained and currently provides a way
 # to test "krebs" configuration (infrastructure to be used by every krebsminister).
 
 # You can add your own test, test steps as required. Deploy the config on a
 # krebs host like wolf and everything should be fine.
 
 # TODO for all users schedule a build for fast tests
-{
+let
+  hostname = config.networking.hostName;
+in {
   # due to the fact that we actually build stuff on the box via the daemon,
   # /nix/store should be cleaned up automatically as well
-  services.nginx.virtualHosts.build = {
-    serverAliases = [ "build.wolf.r" ];
-    locations."/".extraConfig = ''
-      proxy_set_header Upgrade $http_upgrade;
-      proxy_set_header Connection "upgrade";
-      proxy_pass http://127.0.0.1:${toString config.krebs.buildbot.master.web.port};
-    '';
+  services.nginx = {
+    enable = true;
+    virtualHosts.build = {
+      serverAliases = [ "build.${hostname}.r" ];
+      locations."/".extraConfig = ''
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_pass http://127.0.0.1:${toString config.krebs.buildbot.master.web.port};
+      '';
+    };
   };
 
   nix.gc.automatic = true;
   nix.gc.dates = "05:23";
-  networking.firewall.allowedTCPPorts = [ 8010 9989 ];
+  networking.firewall.allowedTCPPorts = [ 80 8010 9989 ];
   krebs.buildbot.master = let
-    stockholm-mirror-url = http://cgit.wolf.r/stockholm-mirror ;
+    stockholm-mirror-url = "http://cgit.${hostname}.r/stockholm" ;
   in {
-    secrets = [ "retiolum-ci.rsa_key.priv" "cac.json" ];
     workers = {
       testworker =  "krebspass";
     };
@@ -155,13 +159,13 @@
     };
     irc = {
       enable = true;
-      nick = "wolfbot";
+      nick = "${hostname}bot";
       server = "ni.r";
       channels = [ { channel = "retiolum"; } ];
       allowForce = true;
     };
     extraConfig = ''
-      c['buildbotURL'] = "http://build.wolf.r/"
+      c['buildbotURL'] = "http://build.${hostname}.r/"
     '';
   };
 
@@ -173,6 +177,6 @@
     packages = with pkgs; [ gnumake jq nix populate ];
     # all nix commands will need a working nixpkgs installation
     extraEnviron = {
-      NIX_PATH="nixpkgs=/var/src/nixpkgs:nixos-config=./krebs/1systems/wolf/config.nix:stockholm=./"; };
+      NIX_PATH="nixpkgs=/var/src/nixpkgs:nixos-config=./krebs/1systems/${hostname}/config.nix:stockholm=./"; };
   };
 }
diff --git a/krebs/3modules/backup.nix b/krebs/3modules/backup.nix
index bfb0ab591..6f015d66b 100644
--- a/krebs/3modules/backup.nix
+++ b/krebs/3modules/backup.nix
@@ -54,6 +54,12 @@ let
               };
             });
           };
+          timerConfig = mkOption {
+            type = with types; attrsOf str;
+            default = optionalAttrs (config.startAt != null) {
+              OnCalendar = config.startAt;
+            };
+          };
         };
       }));
     };
@@ -82,11 +88,19 @@ let
           SyslogIdentifier = ExecStart.name;
           Type = "oneshot";
         };
-        startAt = mkIf (plan.startAt != null) plan.startAt;
       }) (filter (plan: build-host-is "pull" "dst" plan ||
                         build-host-is "push" "src" plan)
                  enabled-plans));
 
+    systemd.timers =
+      listToAttrs (map (plan: nameValuePair "backup.${plan.name}" {
+        wantedBy = [ "timers.target" ];
+        timerConfig = plan.timerConfig;
+      }) (filter (plan: plan.timerConfig != {} && (
+                        build-host-is "pull" "dst" plan ||
+                        build-host-is "push" "src" plan))
+                 enabled-plans));
+
     users.groups.backup.gid = genid "backup";
     users.users.root.openssh.authorizedKeys.keys =
       map (plan: getAttr plan.method {
diff --git a/krebs/3modules/fetchWallpaper.nix b/krebs/3modules/fetchWallpaper.nix
index e00c0ec9b..cdb9fe70a 100644
--- a/krebs/3modules/fetchWallpaper.nix
+++ b/krebs/3modules/fetchWallpaper.nix
@@ -49,6 +49,7 @@ let
     set -euf
 
     mkdir -p ${cfg.stateDir}
+    chmod o+rx ${cfg.stateDir}
     cd ${cfg.stateDir}
     (curl --max-time ${toString cfg.maxTime} -s -o wallpaper.tmp -z wallpaper ${shell.escape cfg.url} && mv wallpaper.tmp wallpaper) || :
     feh --no-fehbg --bg-scale ${shell.escape cfg.stateDir}/wallpaper
diff --git a/krebs/3modules/git.nix b/krebs/3modules/git.nix
index 884108ebb..93211d9d4 100644
--- a/krebs/3modules/git.nix
+++ b/krebs/3modules/git.nix
@@ -569,7 +569,8 @@ let
         if ! test -d "$repodir"; then
           mkdir -m "$mode" "$repodir"
           git init --bare --template=/var/empty "$repodir"
-          chown -R git:nogroup "$repodir"
+          # TODO fix correctly with stringAfter
+          chown -R ${toString config.users.users.git.uid}:nogroup "$repodir"
         fi
         ln -s ${hooks} "$repodir/hooks"
       ''
diff --git a/krebs/3modules/krebs/default.nix b/krebs/3modules/krebs/default.nix
index f11b8ef48..f751b4f9f 100644
--- a/krebs/3modules/krebs/default.nix
+++ b/krebs/3modules/krebs/default.nix
@@ -38,6 +38,8 @@ in {
           ip6.addr = "42:0:0:0:0:0:77:2";
           aliases = [
             "puyak.r"
+            "build.puyak.r"
+            "cgit.puyak.r"
           ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -94,5 +96,15 @@ in {
     krebs = {
       pubkey = "lol"; # TODO krebs.users.krebs.pubkey should be unnecessary
     };
+    puyak-repo-sync = {
+      name = "puyak-repo-sync";
+      mail = "spam@krebsco.de";
+      pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJ+18mG/cV1YbR9PXzuu3ScyV9kENy08OXUntpmgh9H2";
+    };
+    wolf-repo-sync = {
+      name = "wolf-repo-sync";
+      mail = "spam@krebsco.de";
+      pubkey = ''ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCwuAZB3wtAvBJFYh+gWdyGaZU4mtqM2dFXmh2rORlbXeh02msu1uv07ck1VKkQ4LgvCBcBsAOeVa1NTz99eLqutwgcqMCytvRNUCibcoEWwHObsK53KhDJj+zotwlFhnPPeK9+EpOP4ngh/tprJikttos5BwBwe2K+lfiid3fmVPZcTTYa77nCwijimMvWEx6CEjq1wiXMUc4+qcEn8Swbwomz/EEQdNE2hgoC3iMW9RqduTFdIJWnjVi0KaxenX9CvQRGbVK5SSu2gwzN59D/okQOCP6+p1gL5r3QRHSLSSRiEHctVQTkpKOifrtLZGSr5zArEmLd/cOVyssHQPCX repo-sync@wolf'';
+    };
   };
 }
diff --git a/krebs/4lib/infest/prepare.sh b/krebs/4lib/infest/prepare.sh
index 50d521e17..d39aca348 100644
--- a/krebs/4lib/infest/prepare.sh
+++ b/krebs/4lib/infest/prepare.sh
@@ -102,7 +102,7 @@ prepare_nixos_iso() {
   mkdir -p bin
   rm -f bin/nixos-install
   cp "$(type -p nixos-install)" bin/nixos-install
-  sed -i "s@^NIX_PATH=\"[^\"]*\"@NIX_PATH=$target_path@" bin/nixos-install
+  sed -i "s@NIX_PATH=\"[^\"]*\"@NIX_PATH=$target_path@" bin/nixos-install
 }
 
 get_nixos_install() {
diff --git a/lass/1systems/icarus/config.nix b/lass/1systems/icarus/config.nix
index 1d20c081a..61837bf38 100644
--- a/lass/1systems/icarus/config.nix
+++ b/lass/1systems/icarus/config.nix
@@ -36,11 +36,11 @@
     "/boot" = {
       device = "/dev/sda2";
     };
-    #"/bku" = {
-    #  device = "/dev/mapper/pool-bku";
-    #  fsType = "btrfs";
-    #  options = ["defaults" "noatime" "ssd" "compress=lzo"];
-    #};
+    "/bku" = {
+      device = "/dev/mapper/pool-bku";
+      fsType = "btrfs";
+      options = ["defaults" "noatime" "ssd" "compress=lzo"];
+    };
     "/home" = {
       device = "/dev/mapper/pool-home";
       fsType = "btrfs";
diff --git a/lass/2configs/backups.nix b/lass/2configs/backups.nix
index abc55a0e1..c4fb85420 100644
--- a/lass/2configs/backups.nix
+++ b/lass/2configs/backups.nix
@@ -134,7 +134,7 @@ with import <stockholm/lib>;
       startAt = "03:55";
     };
     icarus-home-mors = {
-      method = "push";
+      method = "pull";
       src = { host = config.krebs.hosts.icarus; path = "/home"; };
       dst = { host = config.krebs.hosts.mors;   path = "/bku/icarus-home"; };
       startAt = "05:00";
diff --git a/shell.nix b/shell.nix
index 8c224a5f8..5ea9ff3b7 100644
--- a/shell.nix
+++ b/shell.nix
@@ -47,10 +47,8 @@ let
   '';
 
   init.env = pkgs.writeText "init.env" /* sh */ ''
-    config=''${config-$user/1systems/$system/config.nix}
     source=''${source-$user/1systems/$system/source.nix}
 
-    export config
     export source
     export system
     export target
@@ -98,7 +96,6 @@ let
           --readonly-mode \
           --show-trace \
           --strict \
-          -I nixos-config="$config" \
           "$source")
       echo $_source |
       ${pkgs.populate}/bin/populate \
@@ -118,7 +115,6 @@ let
         STOCKHOLM_VERSION=$STOCKHOLM_VERSION \
         nix-shell \
             --run $(q \
-                config=$config \
                 system=$system \
                 target=$target \
                 using_proxy=true \
diff --git a/tv/3modules/ejabberd/config.nix b/tv/3modules/ejabberd/config.nix
index 29c38fbe4..68bcfa340 100644
--- a/tv/3modules/ejabberd/config.nix
+++ b/tv/3modules/ejabberd/config.nix
@@ -1,93 +1,129 @@
-{ config, ... }: with import <stockholm/lib>; let
-  cfg = config.tv.ejabberd;
+with import <stockholm/lib>;
+{ config, ... }: let
 
-  # XXX this is a placeholder that happens to work the default strings.
-  toErlang = builtins.toJSON;
-in toFile "ejabberd.conf" ''
-  {loglevel, 3}.
-  {hosts, ${toErlang cfg.hosts}}.
-  {listen,
-   [
-    {5222, ejabberd_c2s, [
-        starttls,
-        {certfile, ${toErlang cfg.certfile.path}},
-        {access, c2s},
-        {shaper, c2s_shaper},
-        {max_stanza_size, 65536}
-             ]},
-    {5269, ejabberd_s2s_in, [
-           {shaper, s2s_shaper},
-           {max_stanza_size, 131072}
-          ]},
-    {5280, ejabberd_http, [
-         captcha,
-         http_bind,
-         http_poll,
-         web_admin
-        ]}
-   ]}.
-  {s2s_use_starttls, required}.
-  {s2s_certfile, ${toErlang cfg.s2s_certfile.path}}.
-  {auth_method, internal}.
-  {shaper, normal, {maxrate, 1000}}.
-  {shaper, fast, {maxrate, 50000}}.
-  {max_fsm_queue, 1000}.
-  {acl, local, {user_regexp, ""}}.
-  {access, max_user_sessions, [{10, all}]}.
-  {access, max_user_offline_messages, [{5000, admin}, {100, all}]}.
-  {access, local, [{allow, local}]}.
-  {access, c2s, [{deny, blocked},
-           {allow, all}]}.
-  {access, c2s_shaper, [{none, admin},
-            {normal, all}]}.
-  {access, s2s_shaper, [{fast, all}]}.
-  {access, announce, [{allow, admin}]}.
-  {access, configure, [{allow, admin}]}.
-  {access, muc_admin, [{allow, admin}]}.
-  {access, muc_create, [{allow, local}]}.
-  {access, muc, [{allow, all}]}.
-  {access, pubsub_createnode, [{allow, local}]}.
-  {access, register, [{allow, all}]}.
-  {language, "en"}.
-  {modules,
-   [
-    {mod_adhoc,    []},
-    {mod_announce, [{access, announce}]},
-    {mod_blocking,[]},
-    {mod_caps,     []},
-    {mod_configure,[]},
-    {mod_disco,    []},
-    {mod_irc,      []},
-    {mod_http_bind, []},
-    {mod_last,     []},
-    {mod_muc,      [
-        {access, muc},
-        {access_create, muc_create},
-        {access_persistent, muc_create},
-        {access_admin, muc_admin}
-       ]},
-    {mod_offline,  [{access_max_user_messages, max_user_offline_messages}]},
-    {mod_ping,     []},
-    {mod_privacy,  []},
-    {mod_private,  []},
-    {mod_pubsub,   [
-        {access_createnode, pubsub_createnode},
-        {ignore_pep_from_offline, true},
-        {last_item_cache, false},
-        {plugins, ["flat", "hometree", "pep"]}
-       ]},
-    {mod_register, [
-        {welcome_message, {"Welcome!",
-               "Hi.\nWelcome to this XMPP server."}},
-        {ip_access, [{allow, "127.0.0.0/8"},
-               {deny, "0.0.0.0/0"}]},
-        {access, register}
-       ]},
-    {mod_roster,   []},
-    {mod_shared_roster,[]},
-    {mod_stats,    []},
-    {mod_time,     []},
-    {mod_vcard,    []},
-    {mod_version,  []}
-   ]}.
+  # See https://github.com/processone/ejabberd/blob/master/ejabberd.yml.example
+
+  ciphers = concatStringsSep ":" [
+    "ECDHE-ECDSA-AES256-GCM-SHA384"
+    "ECDHE-RSA-AES256-GCM-SHA384"
+    "ECDHE-ECDSA-CHACHA20-POLY1305"
+    "ECDHE-RSA-CHACHA20-POLY1305"
+    "ECDHE-ECDSA-AES128-GCM-SHA256"
+    "ECDHE-RSA-AES128-GCM-SHA256"
+    "ECDHE-ECDSA-AES256-SHA384"
+    "ECDHE-RSA-AES256-SHA384"
+    "ECDHE-ECDSA-AES128-SHA256"
+    "ECDHE-RSA-AES128-SHA256"
+  ];
+
+  protocol_options = [
+    "no_sslv2"
+    "no_sslv3"
+    "no_tlsv1"
+    "no_tlsv1_10"
+  ];
+
+in /* yaml */ ''
+
+  access_rules:
+    announce:
+      - allow: admin
+    local:
+      - allow: local
+    configure:
+      - allow: admin
+    register:
+      - allow
+    s2s:
+      - allow
+    trusted_network:
+      - allow: loopback
+
+  acl:
+    local:
+      user_regexp: ""
+    loopback:
+      ip:
+        - "127.0.0.0/8"
+        - "::1/128"
+        - "::FFFF:127.0.0.1/128"
+
+  hosts: ${toJSON config.hosts}
+
+  language: "en"
+
+  listen:
+    -
+      port: 5222
+      ip: "::"
+      module: ejabberd_c2s
+      shaper: c2s_shaper
+      certfile: ${toJSON config.certfile.path}
+      ciphers: ${toJSON ciphers}
+      dhfile: ${toJSON config.dhfile.path}
+      protocol_options: ${toJSON protocol_options}
+      starttls: true
+      starttls_required: true
+      tls: false
+      tls_compression: false
+      max_stanza_size: 65536
+    -
+      port: 5269
+      ip: "::"
+      module: ejabberd_s2s_in
+      shaper: s2s_shaper
+      max_stanza_size: 131072
+
+  loglevel: 4
+
+  modules:
+    mod_adhoc: {}
+    mod_admin_extra: {}
+    mod_announce:
+      access: announce
+    mod_caps: {}
+    mod_carboncopy: {}
+    mod_client_state: {}
+    mod_configure: {}
+    mod_disco: {}
+    mod_echo: {}
+    mod_irc: {}
+    mod_bosh: {}
+    mod_last: {}
+    mod_offline:
+      access_max_user_messages: max_user_offline_messages
+    mod_ping: {}
+    mod_privacy: {}
+    mod_private: {}
+    mod_register:
+      access_from: deny
+      access: register
+      ip_access: trusted_network
+      registration_watchers: ${toJSON config.registration_watchers}
+    mod_roster: {}
+    mod_shared_roster: {}
+    mod_stats: {}
+    mod_time: {}
+    mod_vcard:
+      search: false
+    mod_version: {}
+    mod_http_api: {}
+
+  s2s_access: s2s
+  s2s_certfile: ${toJSON config.s2s_certfile.path}
+  s2s_ciphers: ${toJSON ciphers}
+  s2s_dhfile: ${toJSON config.dhfile.path}
+  s2s_protocol_options: ${toJSON protocol_options}
+  s2s_tls_compression: false
+  s2s_use_starttls: required
+
+  shaper_rules:
+    max_user_offline_messages:
+      - 5000: admin
+      - 100
+    max_user_sessions: 10
+    c2s_shaper:
+      - none: admin
+      - normal
+    s2s_shaper: fast
 ''
diff --git a/tv/3modules/ejabberd/default.nix b/tv/3modules/ejabberd/default.nix
index 4d3493d78..d7b8deb7e 100644
--- a/tv/3modules/ejabberd/default.nix
+++ b/tv/3modules/ejabberd/default.nix
@@ -1,5 +1,17 @@
 { config, lib, pkgs, ... }@args: with import <stockholm/lib>; let
+
   cfg = config.tv.ejabberd;
+
+  gen-dhparam = pkgs.writeDash "gen-dhparam" ''
+    set -efu
+    path=$1
+    bits=2048
+    # TODO regenerate dhfile after some time?
+    if ! test -e "$path"; then
+      ${pkgs.openssl}/bin/openssl dhparam "$bits" > "$path"
+    fi
+  '';
+
 in {
   options.tv.ejabberd = {
     enable = mkEnableOption "tv.ejabberd";
@@ -11,20 +23,36 @@ in {
         source-path = toString <secrets> + "/ejabberd.pem";
       };
     };
+    dhfile = mkOption {
+      type = types.secret-file;
+      default = {
+        path = "${cfg.user.home}/dhparams.pem";
+        owner = cfg.user;
+        source-path = "/dev/null";
+      };
+    };
     hosts = mkOption {
       type = with types; listOf str;
     };
     pkgs.ejabberdctl = mkOption {
       type = types.package;
       default = pkgs.writeDashBin "ejabberdctl" ''
-        set -efu
-        export SPOOLDIR=${shell.escape cfg.user.home}
-        export EJABBERD_CONFIG_PATH=${shell.escape (import ./config.nix args)}
         exec ${pkgs.ejabberd}/bin/ejabberdctl \
+            --config ${toFile "ejabberd.yaml" (import ./config.nix {
+              inherit pkgs;
+              config = cfg;
+            })} \
             --logs ${shell.escape cfg.user.home} \
+            --spool ${shell.escape cfg.user.home} \
             "$@"
       '';
     };
+    registration_watchers = mkOption {
+      type = types.listOf types.str;
+      default = [
+        config.krebs.users.tv.mail
+      ];
+    };
     s2s_certfile = mkOption {
       type = types.secret-file;
       default = cfg.certfile;
@@ -50,12 +78,12 @@ in {
       requires = [ "secret.service" ];
       after = [ "network.target" "secret.service" ];
       serviceConfig = {
-        Type = "oneshot";
-        RemainAfterExit = "yes";
-        PermissionsStartOnly = "true";
+        ExecStartPre = "${gen-dhparam} ${cfg.dhfile.path}";
+        ExecStart = "${cfg.pkgs.ejabberdctl}/bin/ejabberdctl foreground";
+        PermissionsStartOnly = true;
         SyslogIdentifier = "ejabberd";
         User = cfg.user.name;
-        ExecStart = "${cfg.pkgs.ejabberdctl}/bin/ejabberdctl start";
+        TimeoutStartSec = 60;
       };
     };
 
diff --git a/tv/5pkgs/default.nix b/tv/5pkgs/default.nix
index 284e42a79..02410e8e6 100644
--- a/tv/5pkgs/default.nix
+++ b/tv/5pkgs/default.nix
@@ -28,10 +28,6 @@ in {
         "$@"
   '';
 
-  ejabberd = callPackage ./ejabberd {
-    erlang = self.erlangR16;
-  };
-
   ff = self.writeDashBin "ff" ''
     exec ${self.firefoxWrapper}/bin/firefox "$@"
   '';
diff --git a/tv/5pkgs/ejabberd/default.nix b/tv/5pkgs/ejabberd/default.nix
deleted file mode 100644
index 3a77c5cd1..000000000
--- a/tv/5pkgs/ejabberd/default.nix
+++ /dev/null
@@ -1,28 +0,0 @@
-{stdenv, fetchurl, expat, erlang, zlib, openssl, pam, lib}:
-
-stdenv.mkDerivation rec {
-  version = "2.1.13";
-  name = "ejabberd-${version}";
-  src = fetchurl {
-    url = "http://www.process-one.net/downloads/ejabberd/${version}/${name}.tgz";
-    sha256 = "0vf8mfrx7vr3c5h3nfp3qcgwf2kmzq20rjv1h9sk3nimwir1q3d8";
-  };
-  buildInputs = [ expat erlang zlib openssl pam ];
-  patchPhase = ''
-    sed -i \
-      -e "s|erl \\\|${erlang}/bin/erl \\\|" \
-      -e 's|EXEC_CMD=\"sh -c\"|EXEC_CMD=\"${stdenv.shell} -c\"|' \
-      src/ejabberdctl.template
-  '';
-  preConfigure = ''
-    cd src
-  '';
-  configureFlags = ["--enable-pam"];
-
-  meta = {
-    description = "Open-source XMPP application server written in Erlang";
-    license = stdenv.lib.licenses.gpl2;