Merge remote-tracking branch 'ni/master'

1 files changed, 204 insertions, 36 deletions

diff --git a/tv/3modules/ejabberd/default.nix b/tv/3modules/ejabberd/default.nix
index 935df9a9c..edc5296b0 100644
--- a/tv/3modules/ejabberd/default.nix
+++ b/tv/3modules/ejabberd/default.nix
@@ -12,12 +12,43 @@
     fi
   '';
 
+  settingsFormat = pkgs.formats.json {};
+
 in {
   options.tv.ejabberd = {
     enable = mkEnableOption "tv.ejabberd";
-    certfile = mkOption {
-      type = types.absolute-pathname;
-      default = toString <secrets> + "/ejabberd.pem";
+    certfiles = mkOption {
+      type = types.listOf types.absolute-pathname;
+      default = [
+        (toString <secrets> + "/ejabberd.pem")
+      ];
+    };
+    configFile = mkOption {
+      type = types.either types.package types.absolute-pathname;
+      default = settingsFormat.generate "ejabberd.yaml" cfg.settings;
+    };
+    ciphers = mkOption {
+      type = types.listOf types.str;
+      default = [
+        "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"
+      ];
+    };
+    credentials.certfiles = mkOption {
+      internal = true;
+      readOnly = true;
+      default =
+        imap
+          (i: const "/tmp/credentials/certfile${toJSON i}")
+          cfg.certfiles;
     };
     hosts = mkOption {
       type = with types; listOf str;
@@ -29,42 +60,66 @@ in {
         paths = [
           (pkgs.writeDashBin "ejabberdctl" ''
             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} \
+                --config /etc/ejabberd/ejabberd.yaml \
+                --ctl-config /etc/ejabberd/ejabberdctl.cfg \
+                --logs ${cfg.stateDir} \
+                --spool ${cfg.stateDir} \
                 "$@"
           '')
           pkgs.ejabberd
         ];
       };
     };
+    protocol_options = mkOption {
+      type = types.listOf types.str;
+      default = [
+        "no_sslv2"
+        "no_sslv3"
+        "no_tlsv1"
+        "no_tlsv1_10"
+      ];
+    };
     registration_watchers = mkOption {
       type = types.listOf types.str;
       default = [
         config.krebs.users.tv.mail
       ];
     };
-    user = mkOption {
-      type = types.user;
-      default = {
-        name = "ejabberd";
-        home = "/var/lib/ejabberd";
-      };
+    settings = mkOption {
+      type = settingsFormat.type;
+      default = {};
+    };
+    stateDir = mkOption {
+      type =
+        types.addCheck
+          types.absolute-pathname
+          (path:
+            hasPrefix "/var/lib/" path &&
+            types.filename.check (removePrefix "/var/lib/" path)
+          );
+      default = "/var/lib/ejabberd";
     };
   };
   config = lib.mkIf cfg.enable {
+
+    environment.etc."ejabberd/ejabberd.yaml".source = cfg.configFile;
+    environment.etc."ejabberd/ejabberdctl.cfg".source =
+      builtins.toFile "ejabberdctl.cfg" /* sh */ ''
+        ERL_OPTIONS='-setcookie ${cfg.stateDir}/.erlang.cookie'
+      '';
+
     environment.systemPackages = [
       (pkgs.symlinkJoin {
         name = "ejabberd-sudo-wrapper";
         paths = [
           (pkgs.writeDashBin "ejabberdctl" ''
-            set -efu
-            cd ${shell.escape cfg.user.home}
-            exec /run/wrappers/bin/sudo \
-                -u ${shell.escape cfg.user.name} \
+            exec ${pkgs.systemd}/bin/systemd-run \
+                --unit=ejabberdctl \
+                --property=StateDirectory=ejabberd \
+                --property=User=ejabberd \
+                --collect \
+                --pipe \
+                --quiet \
                 ${cfg.pkgs.ejabberd}/bin/ejabberdctl "$@"
           '')
           cfg.pkgs.ejabberd
@@ -77,31 +132,144 @@ in {
     systemd.services.ejabberd = {
       wantedBy = [ "multi-user.target" ];
       after = [ "network.target" ];
+      reloadTriggers = [
+        config.environment.etc."ejabberd/ejabberd.yaml".source
+        config.environment.etc."ejabberd/ejabberdctl.cfg".source
+      ];
       serviceConfig = {
-        ExecStart = pkgs.writeDash "ejabberd" ''
-          ${pkgs.coreutils}/bin/ln -s "$CREDENTIALS_DIRECTORY" /tmp/credentials
-          ${gen-dhparam} /var/lib/ejabberd/dhfile
-          exec ${cfg.pkgs.ejabberd}/bin/ejabberdctl foreground
-        '';
-        LoadCredential = [
-          "certfile:${cfg.certfile}"
+        ExecStartPre = [
+          "${pkgs.coreutils}/bin/ln -s \${CREDENTIALS_DIRECTORY} /tmp/credentials"
+          "${gen-dhparam} ${cfg.stateDir}/dhfile"
+        ];
+        ExecStart = "${cfg.pkgs.ejabberd}/bin/ejabberdctl foreground";
+        ExecStop = [
+          "${cfg.pkgs.ejabberd}/bin/ejabberdctl stop"
+          "${cfg.pkgs.ejabberd}/bin/ejabberdctl stopped"
         ];
-        PermissionsStartOnly = true;
+        ExecReload = "${cfg.pkgs.ejabberd}/bin/ejabberdctl reload_config";
+        LoadCredential =
+          zipListsWith
+            (dst: src: "${baseNameOf dst}:${src}")
+            cfg.credentials.certfiles
+            cfg.certfiles;
+        LimitNOFILE = 65536;
+        PrivateDevices = true;
         PrivateTmp = true;
         SyslogIdentifier = "ejabberd";
         StateDirectory = "ejabberd";
-        User = cfg.user.name;
-        TimeoutStartSec = 60;
+        User = "ejabberd";
+        DynamicUser = true;
+        TimeoutSec = 60;
+        RestartSec = 5;
+        Restart = "on-failure";
+        Type = "notify";
+        NotifyAccess = "all";
+        WatchdogSec = 30;
       };
     };
 
-    users.users.${cfg.user.name} = {
-      inherit (cfg.user) home name uid;
-      createHome = true;
-      group = cfg.user.name;
-      isSystemUser = true;
-    };
+    # preset config values
+    tv.ejabberd.settings = {
+      access_rules = {
+        announce = mkDefault [{ allow = "admin"; }];
+        local = mkDefault [{ allow = "local"; }];
+        configure = mkDefault [{ allow = "admin"; }];
+        register = mkDefault ["allow"];
+        s2s = mkDefault ["allow"];
+        trusted_network = mkDefault [{ allow = "loopback"; }];
+      };
+
+      acl = {
+        local.user_regexp = mkDefault "";
+        loopback.ip = mkDefault [
+          "127.0.0.0/8"
+          "::1/128"
+          "::FFFF:127.0.0.1/128"
+        ];
+      };
+
+      certfiles = mkDefault cfg.credentials.certfiles;
+
+      hosts = mkDefault cfg.hosts;
+
+      language = mkDefault "en";
+
+      listen = mkDefault [
+        {
+          port = 5222;
+          ip = "::";
+          module = "ejabberd_c2s";
+          shaper = "c2s_shaper";
+          ciphers = concatStringsSep ":" cfg.ciphers;
+          protocol_options = cfg.protocol_options;
+          starttls = true;
+          starttls_required = true;
+          tls = false;
+          tls_compression = false;
+          max_stanza_size = 65536;
+        }
+        {
+          port = 5269;
+          ip = "::";
+          module = "ejabberd_s2s_in";
+          shaper = "s2s_shaper";
+          dhfile = "${cfg.stateDir}/dhfile";
+          max_stanza_size = 131072;
+        }
+      ];
+
+      loglevel = mkDefault "4";
+
+      modules = {
+        mod_adhoc = mkDefault {};
+        mod_admin_extra = mkDefault {};
+        mod_announce.access = mkDefault "announce";
+        mod_caps = mkDefault {};
+        mod_carboncopy = mkDefault {};
+        mod_client_state = mkDefault {};
+        mod_configure = mkDefault {};
+        mod_disco = mkDefault {};
+        mod_echo = mkDefault {};
+        mod_bosh = mkDefault {};
+        mod_last = mkDefault {};
+        mod_offline.access_max_user_messages = mkDefault "max_user_offline_messages";
+        mod_ping = mkDefault {};
+        mod_privacy = mkDefault {};
+        mod_private = mkDefault {};
+        mod_register = {
+          access_from = mkDefault "deny";
+          access = mkDefault "register";
+          ip_access = mkDefault "trusted_network";
+          registration_watchers = mkDefault cfg.registration_watchers;
+        };
+        mod_roster = mkDefault {};
+        mod_shared_roster = mkDefault {};
+        mod_stats = mkDefault {};
+        mod_time = mkDefault {};
+        mod_vcard.search = mkDefault false;
+        mod_version = mkDefault {};
+        mod_http_api = mkDefault {};
+      };
+
+      s2s_access = mkDefault "s2s";
+      s2s_ciphers = concatStringsSep ":" cfg.ciphers;
+      s2s_dhfile = mkDefault "${cfg.stateDir}/dhfile";
+      s2s_protocol_options = mkDefault cfg.protocol_options;
+      s2s_tls_compression = mkDefault false;
+      s2s_use_starttls = mkDefault "required";
 
-    users.groups.${cfg.user.name} = {};
+      shaper_rules = {
+        max_user_offline_messages = mkDefault [
+          { "5000" = "admin"; }
+          100
+        ];
+        max_user_sessions = mkDefault 10;
+        c2s_shaper = mkDefault [
+          { "none" = "admin"; }
+          "normal"
+        ];
+        s2s_shaper = mkDefault "fast";
+      };
+    };
   };
 }