allow port 17 through firewall

Reviewed-on: frero/qotd#1

.gitignore

@@ -1,2 +1,3 @@
 *.uasm
 result
+*.qcow2

README.md

@@ -1,6 +1,23 @@
-this is wip
+# QOTD daemon
 
-the idea was to create a uiua program that serves the [qotd port
+> [!CAUTION]
+> This is WIP
+
+The idea was to create a uiua program that serves the [qotd port
 17](https://en.wikipedia.org/wiki/QOTD) then host it on one of pvv's machines.
 this to learn about socket programming in uiua, and to show some love to the
 oft-forgotten port 17.
+
+## Building and running
+
+**Build:**
+
+```console
+$ nix build
+```
+
+**Run in VM:**
+
+```console
+$ nix run .#vm
+```

flake.nix

@@ -1,7 +1,7 @@
 {
     inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
 
-    outputs = { self, nixpkgs }: 
+    outputs = { self, nixpkgs }:
     let
         inherit (nixpkgs) lib;
 
@@ -16,6 +16,19 @@
           pkgs = nixpkgs.legacyPackages.${system};
         in f system pkgs);
     in {
+        apps = forAllSystems (
+          system: pkgs: {
+            default = {
+              type = "app";
+              program = "${lib.getExe self.packages.${system}.default}";
+            };
+            vm = {
+              type = "app";
+              program = "${self.nixosConfigurations.vm.config.system.build.vm}/bin/run-nixos-vm";
+            };
+          }
+        );
+
         devShells = forAllSystems (system: pkgs: {
           default = pkgs.mkShell {
             nativeBuildInputs = [
@@ -29,9 +42,68 @@
         });
 
         overlays.default = final: prev: {
-            qotd = self.packages.${prev.system}.default;
+            qotd = self.packages.${prev.stdenv.hostPlatform.system}.default;
         };
 
         nixosModules.default = ./nix/module.nix;
+
+        nixosConfigurations.vm = nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
+          pkgs = import nixpkgs {
+            system = "x86_64-linux";
+            overlays = [
+              self.overlays.default
+            ];
+          };
+
+          modules = [
+            "${nixpkgs}/nixos/modules/virtualisation/qemu-vm.nix"
+            self.nixosModules.default
+            ({ config, pkgs, ... }: {
+              system.stateVersion = config.system.nixos.release;
+              virtualisation.graphics = false;
+              users.extraUsers.root.password = "root";
+              services.getty.autologinUser = "root";
+
+              environment.systemPackages = with pkgs; [
+                netcat
+              ];
+
+              users.motd = ''
+                =======================
+
+                Welcome to the qotd vm!
+
+                Try running:
+
+                    nc localhost 17
+
+                =======================
+              '';
+
+              services.qotd = {
+                enable = true;
+                quotes = [
+                  ''
+                    "rm -rf /"
+
+                    - felixalb on bekkalokk, 2026 (probably)
+                  ''
+                  ''
+                             ( U I U A )
+                    汎用配列指向プログラミング言語
+
+                    - frero, 2025
+                  ''
+                  ''
+                    bwaaa :3
+
+                    - oysteikt on gitea, 2024
+                  ''
+                ];
+              };
+            })
+          ];
+        };
     };
 }

main.uasm

@@ -1,47 +0,0 @@
-"quotes"
-["f_read_all_str",1]
-"\n\n---\n\n"
-["SPLIT_BY",[[1,1,["BOX",6]]],5]
-[["DUP",11],["LEN",7],["RAND",8],["MUL",9],["FLOOR",10]]
-["PICK",12]
-["UN_BOX",13]
-{"bind_global":[0,15]}
-"127.0.0.1:10017"
-["tcp_listen",16]
-"listening on localhost:10017"
-["print",17]
-["DO",[[1,1,[["DUP",19],["tcp_accept",20],{"copy_to_under":[1,20]},{"call_global":[0,[0,1]]},["write",21],{"pop_under":[1,20]},["close",20]]],[0,1,[[],[1],{"flags":"SORTED_UP | SORTED_DOWN"}]]],18]
-["close",23]
-
-BINDINGS
-const null
-
-FUNCTIONS
-
-SPANS
-"main.ua" [3,1,13,13] [3,6,18,18]
-"main.ua" [4,19,53,46] [4,20,54,47]
-"main.ua" [4,5,37,32] [4,6,40,33]
-"main.ua" [4,3,34,30] [4,4,36,31]
-"main.ua" [4,1,28,28] [4,2,31,29]
-"main.ua" [4,2,31,29] [4,3,34,30]
-"main.ua" [5,9,75,56] [5,10,78,57]
-"main.ua" [5,8,72,55] [5,9,75,56]
-"main.ua" [5,7,70,54] [5,8,72,55]
-"main.ua" [5,6,67,53] [5,7,70,54]
-"main.ua" [5,4,63,51] [5,5,66,52]
-"main.ua" [5,3,60,50] [5,4,63,51]
-"main.ua" [5,2,57,49] [5,3,60,50]
-"main.ua" [5,1,55,48] [5,2,57,49]
-"main.ua" [6,1,80,59] [6,2,81,60]
-"main.ua" [10,1,123,100] [10,6,128,105]
-"main.ua" [11,1,147,124] [11,3,149,126]
-"main.ua" [12,1,181,158] [12,2,184,159]
-"main.ua" [13,15,202,175] [13,16,203,176]
-"main.ua" [13,4,191,164] [13,9,196,169]
-"main.ua" [13,10,197,170] [13,12,199,172]
-"main.ua" [13,3,188,163] [13,4,191,164]
-"main.ua" [15,1,207,180] [15,4,210,183]
-
-FILES
-main.ua: "# find qotd\n\n&fras \"quotes\"\n⊜□¬ ⦷\"\\n\\n---\\n\\n\".\n°□⊡⊸(⌊×⚂⧻)\nq ←\n\n# continuously wait for connection\n\n&tcpl \"127.0.0.1:10017\"\n&p \"listening on localhost:10017\"\n⍢(\n  ⍜&tcpa(&w q).\n)1\n&cl\n"

nix/module.nix

@@ -82,5 +82,9 @@ in
         Accept = "yes";
       };
     };
+
+    networking.firewall.allowedTCPPorts = [
+      17
+    ];
   };
 }

nix/package.nix

@@ -51,4 +51,6 @@ stdenvNoCC.mkDerivation {
       install -Dm555 "$wrapperPath" "$out"/bin/qotd
       runHook postInstall
   '';
+
+  meta.mainProgram = "qotd";
 }

result

@@ -1 +0,0 @@
-/nix/store/s5d4lav4mz1j2mv7zjdc5bkrvsi0f6rs-qotd-unstable