5 files changed, 173 insertions, 0 deletions
diff --git a/modules/services/nixos/ganyupload/README b/modules/services/nixos/ganyupload/README
new file mode 100644
index 0000000..ac9a50d
--- /dev/null
+++ b/modules/services/nixos/ganyupload/README
@@ -0,0 +1,13 @@
+Ganyupload - File Upload Service
+
+Upload files using curl with a PUT request:
+
+  curl -X PUT --data-binary @myfile.txt https://upld.williamsfam.us.com/myfile.txt
+
+The server will respond with "ok" on success.
+
+You can use any path you want:
+
+  curl -X PUT --data-binary @document.pdf https://upld.williamsfam.us.com/docs/document.pdf
+
+Nested directories will be created automatically.
diff --git a/modules/services/nixos/ganyupload/default.nix b/modules/services/nixos/ganyupload/default.nix
new file mode 100644
index 0000000..0138100
--- /dev/null
+++ b/modules/services/nixos/ganyupload/default.nix
@@ -0,0 +1,47 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}: let
+  cfg = config.collinux.services.ganyupload;
+
+  package = pkgs.callPackage ./pkg.nix {};
+in {
+  imports = [
+    (import ../mkCaddyCfg.nix cfg)
+  ];
+
+  config = lib.mkIf cfg.enable {
+    users.groups."ganyupload" = {};
+    users.users."ganyupload" = {
+      isSystemUser = true;
+      group = "ganyupload";
+      home = "/var/lib/ganyupload";
+      createHome = true;
+      homeMode = "755";
+    };
+
+    systemd.services."ganyupload" = {
+      description = "Ganymede File Upload Service";
+      restartIfChanged = true;
+      wants = ["network-online.target" "caddy.service"];
+      after = ["network-online.target" "caddy.service"];
+
+      environment = {
+        PORT = toString cfg.port;
+        UPLOAD_DIR = "/media/ganyupload";
+      };
+
+      serviceConfig = {
+        User = "ganyupload";
+        Type = "simple";
+
+        WorkingDirectory = "/var/lib/ganyupload";
+        ExecStart = "${package}/bin/ganyupload";
+      };
+
+      wantedBy = ["multi-user.target"];
+    };
+  };
+}
diff --git a/modules/services/nixos/ganyupload/go.mod b/modules/services/nixos/ganyupload/go.mod
new file mode 100644
index 0000000..715e1b7
--- /dev/null
+++ b/modules/services/nixos/ganyupload/go.mod
@@ -0,0 +1,3 @@
+module git.ganymede/ganyupload
+
+go 1.25.5
diff --git a/modules/services/nixos/ganyupload/main.go b/modules/services/nixos/ganyupload/main.go
new file mode 100644
index 0000000..6aa219e
--- /dev/null
+++ b/modules/services/nixos/ganyupload/main.go
@@ -0,0 +1,104 @@
+package main
+
+import (
+	_ "embed"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+//go:embed README
+var readme string
+
+var uploadDir = "."
+
+func handleRoot(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Write([]byte(readme))
+}
+
+func handleUpload(w http.ResponseWriter, r *http.Request) {
+	// Show README on GET /
+	if r.Method == http.MethodGet && r.URL.Path == "/" {
+		handleRoot(w, r)
+		return
+	}
+
+	if r.Method != http.MethodPut {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	// Extract filename from URL path, preventing path traversal
+	filename := strings.TrimPrefix(r.URL.Path, "/")
+	if filename == "" {
+		http.Error(w, "filename required", http.StatusBadRequest)
+		return
+	}
+
+	// Prevent path traversal
+	filename = filepath.Clean(filename)
+	if strings.HasPrefix(filename, "..") {
+		http.Error(w, "invalid filename", http.StatusBadRequest)
+		return
+	}
+
+	fullPath := filepath.Join(uploadDir, filename)
+
+	// Ensure the directory exists
+	dir := filepath.Dir(fullPath)
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		log.Printf("failed to create directory: %v", err)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	// Create the file
+	f, err := os.Create(fullPath)
+	if err != nil {
+		log.Printf("failed to create file: %v", err)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+	defer f.Close()
+
+	// Copy request body to file
+	written, err := io.Copy(f, r.Body)
+	if err != nil {
+		log.Printf("failed to write file: %v", err)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.WriteHeader(http.StatusCreated)
+	w.Write([]byte("ok\n"))
+
+	log.Printf("uploaded %s (%d bytes)", filename, written)
+}
+
+func main() {
+	if envUploadDir := os.Getenv("UPLOAD_DIR"); envUploadDir != "" {
+		uploadDir = envUploadDir
+	}
+
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8080"
+	}
+
+	http.HandleFunc("/", handleUpload)
+
+	log.Printf("starting ganyupload on port %s, upload directory: %s", port, uploadDir)
+	if err := http.ListenAndServe(":"+port, nil); err != nil {
+		log.Fatalf("server error: %v", err)
+	}
+}
diff --git a/modules/services/nixos/ganyupload/pkg.nix b/modules/services/nixos/ganyupload/pkg.nix
new file mode 100644
index 0000000..18be8ed
--- /dev/null
+++ b/modules/services/nixos/ganyupload/pkg.nix
@@ -0,0 +1,6 @@
+{pkgs ? import <nixpkgs> {system = "x86_64-linux";}, ...}:
+pkgs.buildGoModule {
+  name = "ganyupload";
+  src = ./.;
+  vendorHash = null;
+}