tv ejabberd: add structural settings

tv/3modules/ejabberd/config.nix

@@ -1,128 +0,0 @@
-with import <stockholm/lib>;
-{ config, ... }: let
-
-  # 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"
-
-  certfiles: ${toJSON config.credentials.certfiles}
-
-  hosts: ${toJSON config.hosts}
-
-  language: "en"
-
-  listen:
-    -
-      port: 5222
-      ip: "::"
-      module: ejabberd_c2s
-      shaper: c2s_shaper
-      ciphers: ${toJSON ciphers}
-      dhfile: ${config.stateDir}/dhfile
-      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_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_ciphers: ${toJSON ciphers}
-  s2s_dhfile: ${config.stateDir}/dhfile
-  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
-''

tv/3modules/ejabberd/default.nix

@@ -12,6 +12,8 @@
     fi
   '';
 
+  settingsFormat = pkgs.formats.yaml {};
+
 in {
   options.tv.ejabberd = {
     enable = mkEnableOption "tv.ejabberd";
@@ -21,6 +23,25 @@ in {
         (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;
@@ -39,13 +60,8 @@ in {
         paths = [
           (pkgs.writeDashBin "ejabberdctl" ''
             exec ${pkgs.ejabberd}/bin/ejabberdctl \
-                --config ${toFile "ejabberd.yaml" (import ./config.nix {
+                --config /etc/ejabberd/ejabberd.yaml \
-                  inherit pkgs;
+                --ctl-config /etc/ejabberd/ejabberdctl.cfg \
-                  config = cfg;
-                })} \
-                --ctl-config ${toFile "ejabberdctl.cfg" /* sh */ ''
-                  ERL_OPTIONS='-setcookie ${cfg.stateDir}/.erlang.cookie'
-                ''} \
                 --logs ${cfg.stateDir} \
                 --spool ${cfg.stateDir} \
                 "$@"
@@ -54,12 +70,25 @@ in {
         ];
       };
     };
+    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
       ];
     };
+    settings = mkOption {
+      type = settingsFormat.type;
+      default = {};
+    };
     stateDir = mkOption {
       type = types.absolute-pathname;
       default = "/var/lib/ejabberd";
@@ -67,6 +96,13 @@ in {
     };
   };
   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 ${cfg.stateDir}/.erlang.cookie'
+      '';
+
     environment.systemPackages = [
       (pkgs.symlinkJoin {
         name = "ejabberd-sudo-wrapper";
@@ -91,6 +127,10 @@ in {
     systemd.services.ejabberd = {
       wantedBy = [ "multi-user.target" ];
       after = [ "network.target" ];
+      reloadTriggers = [
+        config.environment.etc."ejabberd/ejabberd.yaml".source
+        config.environment.etc."ejabberd/ejabberdctl.cfg".source
+      ];
       serviceConfig = {
         ExecStartPre = [
           "${pkgs.coreutils}/bin/ln -s \${CREDENTIALS_DIRECTORY} /tmp/credentials"
@@ -122,5 +162,109 @@ in {
         WatchdogSec = 30;
       };
     };
+
+    # 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";
+
+      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";
+      };
+    };
   };
 }