pruned

system/machines/server/modules/nginx/default.nix

@@ -0,0 +1,76 @@
+{ pkgs, lib, config, ... }:
+
+with lib;
+let
+  cfg = config.modules.system.nginx;
+  domain = "ramos.codes";
+
+in
+{
+  options.modules.system.nginx = {
+    enable = mkEnableOption "Nginx Reverse Proxy";
+  };
+
+  config = mkIf cfg.enable {
+    networking.firewall.allowedTCPPorts = [ 80 443 ];
+
+    systemd.services.nginx.serviceConfig.LimitNOFILE = 65536;
+
+    security.acme = {
+      acceptTerms = true;
+      defaults.email = config.user.email;
+
+      certs."${domain}" = {
+        domain = "*.${domain}";
+        dnsProvider = "namecheap";
+        environmentFile = "/var/lib/acme/namecheap.env";
+        group = "nginx";
+      };
+    };
+
+    services.sslh = {
+      enable = true;
+      listenAddresses = [ "0.0.0.0" ];
+      port = 443;
+      settings = {
+        protocols = [
+          { name = "ssh"; host = "127.0.0.1"; port = "22"; }
+          { name = "tls"; host = "127.0.0.1"; port = "4443"; }
+        ];
+      };
+    };
+
+    services.nginx = {
+      enable = true;
+      recommendedTlsSettings = true;
+      recommendedOptimisation = true;
+      recommendedGzipSettings = true;
+      eventsConfig = "worker_connections 4096;";
+      defaultSSLListenPort = 4443;
+
+      # Catch-all default - friendly error for unknown subdomains
+      virtualHosts."_" = {
+        default = true;
+        useACMEHost = domain;
+        forceSSL = true;
+        locations."/" = {
+          return = "404 'Not Found: This subdomain does not exist.'";
+          extraConfig = ''
+            add_header Content-Type text/plain;
+          '';
+        };
+      };
+
+      virtualHosts."test.${domain}" = {
+        useACMEHost = domain;
+        forceSSL = true;
+        locations."/" = {
+          return = "200 'nginx is working'";
+          extraConfig = ''
+            add_header Content-Type text/plain;
+          '';
+        };
+      };
+    };
+  };
+}