feat(machines/marduk): Split configuration into multiple files and make code more generic

3 files changed, 100 insertions, 45 deletions

diff --git a/machines/marduk/configuration.nix b/machines/marduk/configuration.nix
index 7a72ffd..d9dfc23 100644
--- a/machines/marduk/configuration.nix
+++ b/machines/marduk/configuration.nix
@@ -1,53 +1,28 @@
-{ pkgs, ... }: {
-  services.dnsmasq.settings.address = [
-    "/server.int/ftp.int/samba.int/mail.int/192.168.0.10"
+# This is device is meant to be a home, LOCAL ONLY server!
+# The configurations you will find are woefully insecure and hard-coded.
+{ lib, ... }: {
+  imports = [
+    ./httpd.nix
+    ./mail.nix
   ];
 
-  services.httpd = {
-    virtualHosts = {
-      "server.int" = {
-        listen = [ { port = 80; } ];
-        documentRoot = "/var/www/server";
-        locations."/server-status".extraConfig = ''
-          SetHandler server-status
-        '';
-      };
-
-      #== File servers ==#
-
-      "samba.int" = rec {
-        listen = [ { port = 80; } ];
-        documentRoot = "/NetworkDirectory";
-        extraConfig = ''
-          <Directory "${documentRoot}">
-              IndexOptions +NameWidth=* +Charset=UTF-8
-          </Directory>
-        '';
-      };
-      "ftp.int" = rec {
-        listen = [ { port = 80; } ];
-        documentRoot = "/home/ftp";
-        extraConfig = ''
-          <Directory "${documentRoot}">
-              IndexOptions +NameWidth=* +Charset=UTF-8
-          </Directory>
-        '';
-      };
+  options = {
+    constants = lib.mkOption {
+      type = lib.types.attrs;
     };
   };
 
-  services.maddy = {
-    localDomains = [ "mail.int" ];
-
-    ensureAccounts = [
-      "john@mail.int"
-      "yorgus@mail.int"
-    ];
-    ensureCredentials = {
-      # Do not use this in production. This will make passwords world-readable
-      # in the Nix store
-      "john@mail.int".passwordFile = "${pkgs.writeText "postmaster" "john"}";
-      "yorgus@mail.int".passwordFile = "${pkgs.writeText "postmaster" "yorgus"}";
+  config = {
+    constants = {
+      # I've currently set this IP in my router configuration.
+      # It would be better to write a proper static IP NixOS config, but its
+      # fine like that.
+      ip = "192.168.0.10";
+      # This is actually a fantastic TLD. Very few sites use it, you may
+      # consider it as an abbreviation of "internal" and is one of the
+      # "original" gTLDs, introduced in 1988, so every device will always
+      # work with it.
+      tld = "int";
     };
   };
 }
diff --git a/machines/marduk/httpd.nix b/machines/marduk/httpd.nix
new file mode 100644
index 0000000..eb6d8af
--- /dev/null
+++ b/machines/marduk/httpd.nix
@@ -0,0 +1,40 @@
+{ config, ... }: let
+  inherit (config.constants) ip tld;
+in {
+  services.dnsmasq.settings.address = [
+    "/server.${tld}/ftp.${tld}/samba.${tld}/${ip}"
+  ];
+
+  services.httpd = {
+    virtualHosts = {
+      "server.${tld}" = {
+        listen = [ { port = 80; } ];
+        documentRoot = "/var/www/server";
+        locations."/server-status".extraConfig = ''
+          SetHandler server-status
+        '';
+      };
+
+      #== File servers ==#
+
+      "samba.${tld}" = rec {
+        listen = [ { port = 80; } ];
+        documentRoot = "/NetworkDirectory";
+        extraConfig = ''
+          <Directory "${documentRoot}">
+              IndexOptions +NameWidth=* +Charset=UTF-8
+          </Directory>
+        '';
+      };
+      "ftp.${tld}" = rec {
+        listen = [ { port = 80; } ];
+        documentRoot = "/home/ftp";
+        extraConfig = ''
+          <Directory "${documentRoot}">
+              IndexOptions +NameWidth=* +Charset=UTF-8
+          </Directory>
+        '';
+      };
+    };
+  };
+}
diff --git a/machines/marduk/mail.nix b/machines/marduk/mail.nix
new file mode 100644
index 0000000..928be56
--- /dev/null
+++ b/machines/marduk/mail.nix
@@ -0,0 +1,40 @@
+# This mail server is meant to be LOCAL/INTERNAL ONLY!
+# It is woefully insecure, but the plan is to be used only between devices
+# on my home network, so its ok.
+#
+# Configuring internal mail clients:
+# INCOMING SERVER
+#     Protocol             : IMAP
+#     Hostname             : mail.int
+#     Port                 : 143
+#     Connection security  : None
+#     Authentication method: Normal Password
+#     Username             : NAME@mail.int
+# OUTGOING SERVER (SMTP)
+#     Hostname             : mail.int
+#     Port                 : 587
+#     Connection security  : None
+#     Authentication method: Normal Password
+#     Username             : NAME@mail.int
+{ pkgs, config, ... }: let
+  mailDomain = "mail." + config.constants.tld;
+in {
+  services.dnsmasq.settings.address = [
+    "/${mailDomain}/${config.constants.ip}"
+  ];
+
+  services.maddy = {
+    localDomains = [ mailDomain ];
+
+    ensureAccounts = [
+      "john@${mailDomain}"
+      "yorgus@${mailDomain}"
+    ];
+    ensureCredentials = {
+      # Do not use this in production. This will make passwords world-readable
+      # in the Nix store
+      "john@${mailDomain}".passwordFile = "${pkgs.writeText "postmaster" "john"}";
+      "yorgus@${mailDomain}".passwordFile = "${pkgs.writeText "postmaster" "yorgus"}";
+    };
+  };
+}