fix

.env.example

@@ -3,12 +3,16 @@ HOST=0.0.0.0
 PORT=3000
 
 # Storage: persistent filesystem directory where uploaded files and
-# metadata live. Files survive restarts; no automatic expiration.
+# metadata live. Files survive restarts.
 STORAGE_DIR=./storage
 
 # Maximum upload size. Accepts plain bytes or units (B, KB, MB, GB, TB,
 # case-insensitive). A request larger than this is rejected with 413.
-MAX_FILE_SIZE=5GB
+MAX_FILE_SIZE=10GB
+
+# How long an uploaded file lives before it expires and is deleted.
+# In milliseconds. Default is 1 week (604800000).
+FILE_TTL_MS=604800000
 
 # Brute-force protection: rate limit per client IP on download and
 # deletion endpoints. Set RATE_LIMIT_ENABLED=0 to disable.

HOSTING.md

@@ -62,7 +62,8 @@ Relevant variables:
 HOST=127.0.0.1              # bind loopback only; the proxy talks to it
 PORT=3000
 STORAGE_DIR=/opt/filehost/storage
-MAX_FILE_SIZE=5GB           # must be <= proxy upload limit
+MAX_FILE_SIZE=10GB          # must be <= proxy upload limit
+FILE_TTL_MS=604800000       # expire files after 1 week
 RATE_LIMIT_ENABLED=1
 TRUST_PROXY=1               # proxy sets X-Forwarded-For
 ```
@@ -116,7 +117,7 @@ server {
     }
 
     location / {
-        client_max_body_size 6g;          # >= MAX_FILE_SIZE
+        client_max_body_size 11g;          # >= MAX_FILE_SIZE
         proxy_request_buffering off;      # stream uploads (critical for large files)
         proxy_http_version 1.1;
 
@@ -170,7 +171,8 @@ If you proxy through Cloudflare:
 - Set the DNS record to **Proxied**.
 - Uploads/downloads are subject to Cloudflare's size caps (free plan ~100MB).
   For larger files, add a **Cache rule** or **Origin rule** that bypasses
-  Cloudflare for `/api/upload` and `/d/*` so traffic hits your origin directly.
+  Cloudflare for `/api/upload` and `/*` (or at least the share links) so traffic
+  hits your origin directly.
 - Enable `TRUST_PROXY=1`; the app reads `CF-Connecting-IP` as the client IP.
 
 ## 9. Verification
@@ -245,5 +247,6 @@ Files in `storage/` are untouched by updates and keep working.
   short-lived HMAC-signed cookie (server secret in `storage/.secret`).
 - Rate limiting protects the keyed endpoints; `TRUST_PROXY=1` must only be set
   when a proxy really sets `X-Forwarded-For`/`CF-Connecting-IP`.
-- Files never expire. Deletion requires possession of the key
+- Files auto-expire after one week (configurable via `FILE_TTL_MS`) and are
+  swept hourly. Deletion also requires possession of the key
   (`DELETE /api/files/:id` with `X-Delete-Key`).

README.md

@@ -2,19 +2,20 @@
 
 A minimal, self-hosted private file hosting service built with **Bun** and
 **TypeScript**. Upload a file, get a secret, unguessable download link. Files are
-stored permanently on the local filesystem and never expire.
+stored on the local filesystem and expire after one week.
 
 Everything lives on disk — the filesystem is the source of truth. There is no
-database, no object storage, no queue, and no automatic cleanup.
+database, no object storage, and no queue. Expired files are swept automatically.
 
 ## Features
 
 - Drag & drop / file-picker uploads with progress, straight from the browser.
 - **Required per-file password**: every download is protected by a password.
-- Permanent storage on the local filesystem; files survive restarts.
+- Storage on the local filesystem; files survive restarts.
 - A cryptographically secure, unguessable download key for every file.
 - Streaming uploads and downloads — no full buffering in RAM, large files work.
-- Configurable maximum upload size (`413` when exceeded).
+- Configurable maximum upload size (`413` when exceeded, default 10GB).
+- Files **auto-expire after one week** and are removed automatically.
 - Authenticated deletion (possession of the file's secret key is required).
 - Rate-limited download/delete endpoints to blunt brute force.
 - Zero runtime dependencies (Bun is the only runtime).
@@ -47,8 +48,9 @@ cp .env.example .env
 | `HOST`                 | `0.0.0.0`     | Bind address.                                                     |
 | `PORT`                 | `3000`        | Bind port.                                                        |
 | `STORAGE_DIR`          | `./storage`   | Directory where files + metadata are stored (relative to CWD).    |
-| `MAX_FILE_SIZE`        | `5GB`         | Max upload size. Units: `B`, `KB`, `MB`, `GB`, `TB` (or plain int). |
-| `RATE_LIMIT_ENABLED`   | `1`           | Enable per-IP rate limiting on `/d/` and `/api/files/`.            |
+| `MAX_FILE_SIZE`        | `10GB`        | Max upload size. Units: `B`, `KB`, `MB`, `GB`, `TB` (or plain int). |
+| `FILE_TTL_MS`          | `604800000`   | Milliseconds before an upload expires and is deleted (1 week).      |
+| `RATE_LIMIT_ENABLED`   | `1`           | Enable per-IP rate limiting on `/(key)` and `/api/files/`.           |
 | `RATE_LIMIT_MAX`       | `300`         | Max requests per IP per window.                                   |
 | `RATE_LIMIT_WINDOW_MS` | `60000`       | Rate-limit window length in ms.                                   |
 | `TRUST_PROXY`          | `0`           | Set `1` only behind a proxy that sets `X-Forwarded-For`.          |
@@ -66,12 +68,12 @@ Then open http://localhost:3000.
 
 1. Open the site.
 2. Drop `example.zip` (or click to pick a file).
-3. The server stores it permanently and returns a URL like
-   `https://files.example.com/d/8fJ...random-secret...`.
+3. The server stores it and returns a URL like
+   `https://files.example.com/8fJ...random-secret...`.
 4. Copy the URL. Anyone possessing it can download the file — **after entering
    the password you set at upload**. Nobody without the secret URL and the
    password can download it.
-5. The file stays available indefinitely. It is removed only by explicit
+5. The file is removed automatically after one week, or earlier by explicit
    deletion.
 
 ## Filesystem layout
@@ -128,7 +130,7 @@ curl -F "password=hunter2" -F "[email protected]" http://localhost:3000/api/uploa
 {
   "id": "xmK5lLMRErlN",
   "key": "xmK5lLMRErlN",
-  "url": "/d/xmK5lLMRErlN",
+  "url": "/xmK5lLMRErlN",
   "originalName": "example.zip",
   "size": 123456,
   "protected": true
@@ -139,27 +141,29 @@ curl -F "password=hunter2" -F "[email protected]" http://localhost:3000/api/uploa
 the short length keeps share URLs tidy, and the required password adds a second
 factor of protection.
 
-### `GET /d/:key` (also `HEAD`)
+### `GET /:key` (also `HEAD`)
 
-Every file is password-protected. Without a valid auth cookie the server shows a
-password prompt; a wrong or non-existent key returns a generic `404`.
+The download URL is just the key at the site root (`https://host/xmK5lLMRErlN`).
+The legacy `/d/:key` form still works as an alias. Every file is
+password-protected: without a valid auth cookie the server shows a password
+prompt; a wrong or non-existent key returns a generic `404`.
 
 ```bash
-curl -O http://localhost:3000/d/xmK5lLMRErlN   # prompts for password first
+curl -O http://localhost:3000/xmK5lLMRErlN   # prompts for password first
 ```
 
 ### Password protection
 
 Every file requires its password:
 
-1. `GET /d/:key` returns a small HTML password form.
+1. `GET /:key` returns a small HTML password form.
 2. The browser submits it to `POST /api/auth/:key` with `password=...`.
 3. On success the server sets a short-lived (30 min), HttpOnly, SameSite=Lax,
-   signed cookie and redirects back to `/d/:key`, which then streams the file.
+   signed cookie and redirects back to `/:key`, which then streams the file.
 
 ```bash
 curl -c cookies.txt -X POST -d "password=hunter2" http://localhost:3000/api/auth/:key
-curl -b cookies.txt -O http://localhost:3000/d/:key
+curl -b cookies.txt -O http://localhost:3000/:key
 ```
 
 The cookie is signed with a server secret (`storage/.secret`) so it cannot be
@@ -237,7 +241,7 @@ server {
     listen 80;
     server_name files.example.com;
 
-    client_max_body_size 6g;          # >= MAX_FILE_SIZE
+    client_max_body_size 11g;          # >= MAX_FILE_SIZE
     proxy_request_buffering off;      # stream uploads, don't buffer
 
     location / {
@@ -343,7 +347,7 @@ src/
 ├── log.ts             # timestamped logging
 ├── routes/
 │   ├── upload.ts      # POST /api/upload
-│   ├── download.ts    # GET /d/:key
+│   ├── download.ts    # GET /:key
 │   └── delete.ts      # DELETE /api/files/:id
 └── public/            # plain HTML/CSS/JS frontend (no framework)
 ```

deploy/nixos/downloadwf.nix

@@ -42,10 +42,16 @@ in
 
     maxFileSize = lib.mkOption {
       type = lib.types.str;
-      default = "5GB";
+      default = "10GB";
       description = "Maximum upload size (B/KB/MB/GB/TB).";
     };
 
+    fileTtlMs = lib.mkOption {
+      type = lib.types.ints.positive;
+      default = 7 * 24 * 60 * 60 * 1000;
+      description = "Milliseconds before an uploaded file expires and is deleted.";
+    };
+
     trustProxy = lib.mkEnableOption "trust of X-Forwarded-* headers (behind a reverse proxy)";
   };
 
@@ -73,6 +79,7 @@ in
           "HOST=${cfg.host}"
           "STORAGE_DIR=${cfg.storageDir}"
           "MAX_FILE_SIZE=${cfg.maxFileSize}"
+          "FILE_TTL_MS=${toString cfg.fileTtlMs}"
         ] ++ lib.optionals cfg.trustProxy [ "TRUST_PROXY=1" ];
 
         # no runtime deps, so no `bun install` needed at startup

src/config.ts

@@ -5,12 +5,15 @@ export interface Config {
   port: number;
   storageDir: string;
   maxFileSize: number;
+  fileTtlMs: number;
   rateLimitEnabled: boolean;
   rateLimitMax: number;
   rateLimitWindowMs: number;
   trustProxy: boolean;
 }
 
+const DEFAULT_TTL_MS = 7 * 24 * 60 * 60 * 1000; // 1 week
+
 const SIZE_UNITS: Record<string, number> = {
   B: 1,
   K: 1 << 10,
@@ -49,9 +52,14 @@ export function loadConfig(env: Record<string, string | undefined> = process.env
   }
   const host = env.HOST ?? "0.0.0.0";
   const storageDir = resolve(env.STORAGE_DIR ?? "./storage");
-  const maxFileSize = parseSize(env.MAX_FILE_SIZE ?? "5GB");
+  const maxFileSize = parseSize(env.MAX_FILE_SIZE ?? "10GB");
   if (maxFileSize < 1024) throw new Error("MAX_FILE_SIZE must be at least 1KB");
 
+  const fileTtlMs = Number(env.FILE_TTL_MS ?? String(DEFAULT_TTL_MS));
+  if (!Number.isInteger(fileTtlMs) || fileTtlMs < 1) {
+    throw new Error(`Invalid FILE_TTL_MS: ${env.FILE_TTL_MS}`);
+  }
+
   const rateLimitMax = Number(env.RATE_LIMIT_MAX ?? "300");
   if (!Number.isInteger(rateLimitMax) || rateLimitMax < 1) {
     throw new Error(`Invalid RATE_LIMIT_MAX: ${env.RATE_LIMIT_MAX}`);
@@ -66,6 +74,7 @@ export function loadConfig(env: Record<string, string | undefined> = process.env
     port,
     storageDir,
     maxFileSize,
+    fileTtlMs,
     rateLimitEnabled: boolFromEnv(env.RATE_LIMIT_ENABLED, true),
     rateLimitMax,
     rateLimitWindowMs,

src/routes/download.ts

@@ -3,7 +3,7 @@ import { hasValidAuth, renderPasswordForm } from "../auth";
 import { notFound } from "../http";
 import { log } from "../log";
 import { contentDisposition, fileIdFromKey, KEY_PATTERN, secretMatches } from "../security";
-import type { Storage } from "../storage";
+import { isExpired, type Storage } from "../storage";
 
 export async function handleDownload(
   req: Request,
@@ -17,6 +17,11 @@ export async function handleDownload(
 
   const meta = await storage.readMetadata(id);
   if (!meta) return notFound();
+  if (isExpired(meta)) {
+    await storage.delete(id);
+    log("info", `download rejected id=${id} expired`);
+    return notFound();
+  }
   if (!secretMatches(meta.downloadKeyHash, rawKey)) return notFound();
 
   if (!hasValidAuth(req, secret, rawKey)) {

src/routes/upload.ts

@@ -25,6 +25,7 @@ export async function handleUpload(
   req: Request,
   storage: Storage,
   maxFileSize: number,
+  ttlMs: number,
 ): Promise<Response> {
   const contentType = req.headers.get("content-type");
   const boundary = contentType ? getBoundary(contentType) : null;
@@ -73,6 +74,7 @@ export async function handleUpload(
       downloadKeyHash: hashSecret(key),
       passwordHash: hashPassword(password),
       createdAt: new Date().toISOString(),
+      expiresAt: new Date(Date.now() + ttlMs).toISOString(),
     });
 
     log("info", `upload ok id=${id} size=${size} name=${JSON.stringify(originalName)}`);

src/server.ts

@@ -26,6 +26,17 @@ if (sweep.removedFiles > 0 || sweep.removedMetadata > 0) {
 const limiter = new RateLimiter(cfg.rateLimitMax, cfg.rateLimitWindowMs);
 const startedAt = Date.now();
 
+const expiryTimer = setInterval(() => {
+  storage
+    .expireExpired()
+    .then((removed) => {
+      if (removed > 0) log("info", `expiry sweep removed ${removed} file(s)`);
+    })
+    .catch((err) => {
+      log("error", `expiry sweep failed: ${err instanceof Error ? err.message : String(err)}`);
+    });
+}, 60 * 60 * 1000);
+
 const STATIC_ROUTES: Record<string, { file: string; type: string }> = {
   "/": { file: "./public/index.html", type: "text/html; charset=utf-8" },
   "/index.html": { file: "./public/index.html", type: "text/html; charset=utf-8" },
@@ -97,7 +108,7 @@ async function route(req: Request, srv: Server<undefined>): Promise<Response> {
   }
 
   if (path === "/api/upload" && method === "POST") {
-    return handleUpload(req, storage, cfg.maxFileSize);
+    return handleUpload(req, storage, cfg.maxFileSize, cfg.fileTtlMs);
   }
 
   if (path.startsWith("/api/auth/") && method === "POST") {
@@ -145,6 +156,7 @@ log(
 for (const signal of ["SIGINT", "SIGTERM"] as const) {
   process.once(signal, () => {
     log("info", `received ${signal}, shutting down`);
+    clearInterval(expiryTimer);
     server.stop();
     process.exit(0);
   });

src/storage.ts

@@ -11,6 +11,13 @@ export interface FileMeta {
   downloadKeyHash: string;
   passwordHash?: string;
   createdAt: string;
+  expiresAt?: string;
+}
+
+export function isExpired(meta: FileMeta, now: number = Date.now()): boolean {
+  if (!meta.expiresAt) return false;
+  const expires = Date.parse(meta.expiresAt);
+  return Number.isFinite(expires) && expires <= now;
 }
 
 export class UploadTooLargeError extends Error {
@@ -113,6 +120,21 @@ export class Storage {
     await rm(join(this.filesDir, `${id}.part`), { force: true });
   }
 
+  async expireExpired(now: number = Date.now()): Promise<number> {
+    let removed = 0;
+    for (const entry of await readdir(this.metadataDir)) {
+      if (!entry.endsWith(".json")) continue;
+      const id = entry.slice(0, -".json".length);
+      if (!ID_PATTERN.test(id)) continue;
+      const meta = await this.readMetadata(id);
+      if (meta && isExpired(meta, now)) {
+        await this.delete(id);
+        removed++;
+      }
+    }
+    return removed;
+  }
+
   async sweep(): Promise<{ removedFiles: number; removedMetadata: number }> {
     let removedFiles = 0;
     let removedMetadata = 0;