# Warpbox.dev

This repository contains the Go backend base for `warpbox.dev`, a self-hosted transfer-first file sharing application.

## Run

```bash
./scripts/run/dev.sh
```

The default server listens on `:8080`.

Upload size limits are configured in megabytes through `WARPBOX_MAX_UPLOAD_SIZE_MB`.
Fractions are supported, so `0.5Mb` is 512 KiB and `1.5Mb` is 1536 KiB.

Upload policy defaults are also configured in megabytes and can later be changed from
`/admin/settings`:

- `WARPBOX_ANONYMOUS_UPLOADS_ENABLED=true`
- `WARPBOX_ANONYMOUS_MAX_UPLOAD_MB=512`
- `WARPBOX_ANONYMOUS_DAILY_UPLOAD_MB=2048`
- `WARPBOX_USER_DAILY_UPLOAD_MB=8192`
- `WARPBOX_DEFAULT_USER_STORAGE_MB=51200`
- `WARPBOX_USAGE_RETENTION_DAYS=30`
- `WARPBOX_LOCAL_STORAGE_MAX_GB=100`
- `WARPBOX_ANONYMOUS_MAX_DAYS=30`
- `WARPBOX_USER_MAX_DAYS=90`
- `WARPBOX_ANONYMOUS_DAILY_BOXES=100`
- `WARPBOX_USER_DAILY_BOXES=250`
- `WARPBOX_ANONYMOUS_ACTIVE_BOXES=500`
- `WARPBOX_USER_ACTIVE_BOXES=1000`
- `WARPBOX_SHORT_WINDOW_REQUESTS=60`
- `WARPBOX_SHORT_WINDOW_SECONDS=60`
- `WARPBOX_ANONYMOUS_STORAGE_BACKEND=local`
- `WARPBOX_USER_STORAGE_BACKEND=local`
- `WARPBOX_TRUSTED_PROXIES=` controls whether forwarded client IP headers are accepted only from specific proxy IPs/CIDRs. See [SECURITY_PROXY.md](./SECURITY_PROXY.md).

Runtime data is configured with `WARPBOX_DATA_DIR` and defaults to `./data` in the dev environment.
The dev script resolves that path from the repository root.

Large uploads are expected to take minutes on normal home/server connections. Keep
`WARPBOX_READ_TIMEOUT=0s` and `WARPBOX_WRITE_TIMEOUT=0s` so Go does not close the connection
mid-upload; `WARPBOX_READ_HEADER_TIMEOUT=15s` still protects header reads from slowloris-style
connections.

Background jobs are enabled with `WARPBOX_JOBS_ENABLED=true`. Individual jobs can be toggled with
`WARPBOX_CLEANUP_ENABLED` and `WARPBOX_THUMBNAIL_ENABLED`, and their schedules are configured with
`WARPBOX_CLEANUP_EVERY` and `WARPBOX_THUMBNAIL_EVERY`.

On a fresh data directory, visit `/register` to create the first account. That first user becomes
the instance admin and normal registration closes after bootstrap. Admins can create copyable invite
links from `/admin/users`.

The env admin token still exists as emergency fallback access. Set `WARPBOX_ADMIN_TOKEN` and use it
at `/admin/login` if you need to recover access without a user session.

## Emoji reaction packs

File reactions use emoji packs from the runtime data directory, not from the application code. By
default that means `./data/emoji`; if you change `WARPBOX_DATA_DIR`, use
`$WARPBOX_DATA_DIR/emoji` instead.

Each folder under `./data/emoji` becomes one emoji tab in the reaction picker. Put image files
directly inside the pack folder:

```text
data/
├── db/
├── files/
├── logs/
└── emoji/
    ├── openmoji/
    │   ├── 1F600.svg
    │   ├── 1F44D.svg
    │   └── 2764.svg
    ├── pixel-pack/
    │   ├── happy.webp
    │   ├── fire.webp
    │   └── star.webp
    └── custom-work/
        ├── approved.png
        └── shipped.png
```

In this example, the picker shows tabs named `Openmoji`, `Pixel pack`, and `Custom work`.
Supported emoji image extensions are `.svg`, `.webp`, `.png`, `.jpg`, `.jpeg`, and `.gif`.

For one-off Go commands, run them from the backend module:

```bash
cd backend
go run ./cmd/warpbox
```

## Docker / Podman

Copy the example environment file and adjust values such as `WARPBOX_BASE_URL` and
`WARPBOX_ADMIN_TOKEN` before running the container:

Copy the example [docker-compose.example.yml](./docker-compose.example.yml) to [docker-compose.yml](./docker-compose.yml), modify as need-be

```bash
cp .env.example .env
docker compose -f docker-compose.yml up --build
```

The compose example also works with Podman compatible compose tools. Its data volume uses
`./data:/data:Z` for SELinux relabeling, and the container overrides runtime paths to use
`/data`, `/app/static`, and `/app/templates`.

The image exposes `/health`, `/healthz`, and `/api/v1/health`. Docker and compose healthchecks
use `/health`.

## Reverse Proxy Security

Warpbox uses the resolved client IP for anonymous limits, manual bans, and automatic bans. The
default behavior trusts `X-Forwarded-For` and `X-Real-IP` so a normal Caddy reverse proxy works
without extra setup. For hardened deployments where the app port might be reachable from more than
one network, set `WARPBOX_TRUSTED_PROXIES` to trusted proxy IPs/CIDRs. See
[SECURITY_PROXY.md](./SECURITY_PROXY.md) for Caddy examples and Docker/systemd notes.

## Systemd

Build the binary on the server, create a dedicated user, and keep runtime data outside the repo:

```bash
cd /opt/warpbox-dev/backend
go build -o /usr/local/bin/warpbox ./cmd/warpbox
sudo useradd --system --home /var/lib/warpbox --shell /usr/sbin/nologin warpbox
sudo mkdir -p /var/lib/warpbox /etc/warpbox
sudo chown -R warpbox:warpbox /var/lib/warpbox
sudo cp /opt/warpbox-dev/.env.example /etc/warpbox/warpbox.env
```

Example `/etc/warpbox/warpbox.env` values:

```env
WARPBOX_ENV=production
WARPBOX_ADDR=127.0.0.1:6070
WARPBOX_BASE_URL=https://warpbox.dev
WARPBOX_DATA_DIR=/var/lib/warpbox
WARPBOX_STATIC_DIR=/opt/warpbox-dev/backend/static
WARPBOX_TEMPLATE_DIR=/opt/warpbox-dev/backend/templates
WARPBOX_TRUSTED_PROXIES=127.0.0.1,::1
WARPBOX_READ_HEADER_TIMEOUT=15s
WARPBOX_READ_TIMEOUT=0s
WARPBOX_WRITE_TIMEOUT=0s
```

Example `/etc/systemd/system/warpbox.service`:

```ini
[Unit]
Description=Warpbox file sharing service
After=network-online.target
Wants=network-online.target

[Service]
User=warpbox
Group=warpbox
EnvironmentFile=/etc/warpbox/warpbox.env
ExecStart=/usr/local/bin/warpbox
Restart=always
RestartSec=5
NoNewPrivileges=true
PrivateTmp=true
ProtectSystem=strict
ReadWritePaths=/var/lib/warpbox

[Install]
WantedBy=multi-user.target
```

Then enable it:

```bash
sudo systemctl daemon-reload
sudo systemctl enable --now warpbox
sudo systemctl status warpbox
```

Put Caddy in front of `127.0.0.1:6070` and keep the Warpbox port closed to the public internet.

## Layout

- `backend/cmd/warpbox` - main application entry point.
- `backend/libs/config` - environment-backed configuration.
- `backend/libs/httpserver` - server construction and route composition.
- `backend/libs/handlers` - HTTP handlers for pages, API, health, static files.
- `backend/libs/jobs` - background job registration and job loop definitions.
- `backend/libs/middleware` - request logging, recovery, security headers, gzip, request IDs.
- `backend/libs/services` - business logic boundaries, starting with upload limits.
- `backend/libs/helpers` - small reusable helpers.
- `backend/libs/web` - Go template renderer.
- `backend/templates` - server-rendered Go templates.
- `backend/static/css`, `backend/static/js`, `backend/static/img`, `backend/static/fonts` - public assets served from `/static/`.
- `scripts/run/dev.sh` - local development runner.
- `scripts/env/dev.env.example` - tracked development environment template.
- `scripts/env/dev.env` - local development environment, ignored by git.

## Stage 2 Operator Tools

- `/admin/login` - token-based admin login.
- `/admin` - overview metrics: boxes, files, storage, recent uploads, protected/expired boxes.
- `/admin/files` - recent upload table with view and delete actions.
- Expired boxes and boxes that have reached their download limit are cleaned on startup and then every `WARPBOX_CLEANUP_EVERY` when `WARPBOX_CLEANUP_ENABLED=true`.
- Missing image/video thumbnails are generated in a background worker every `WARPBOX_THUMBNAIL_EVERY` when `WARPBOX_THUMBNAIL_ENABLED=true`.

## Stage 3 Anonymous Integrations

Anonymous uploads now return a private management link at creation time. Keep that link secret:
anyone with it can delete the entire upload box. The raw delete token is not stored and cannot be
recovered later.

Browser uploads still show `Open box` and `Copy URL` as the primary actions, with a smaller
`Manage or delete this upload` link in the completion panel.

Curl and custom uploaders can use the same endpoint:

```bash
# Terminal-friendly output: one plain box URL.
curl -F file=@./report.pdf http://localhost:8080/api/v1/upload

# JSON output with boxUrl, thumbnailUrl, manageUrl, deleteUrl, zipUrl, and file entries.
curl -F sharex=@./screenshot.png \
  -H 'Accept: application/json' \
  http://localhost:8080/api/v1/upload
```

The upload endpoint accepts multipart fields named `file` and `sharex`. ShareX users can start
from `examples/sharex/warpbox-anonymous.sxcu`; update `RequestURL` to match your instance URL.
Authenticated uploads (your account's limits) add an `Authorization: Bearer <token>` header — mint
a token under **Account → Access tokens**. The JSON response uses ShareX placeholders
`{json:boxUrl}` (URL), `{json:thumbnailUrl}` (thumbnail), `{json:deleteUrl}` (deletion), and
`{json:error}` (error message).

### Grouping multiple files into one box (`X-Warpbox-Batch`)

By default every uploaded file becomes its own box. To put several files in a **single** box, send
the opt-in `X-Warpbox-Batch` header: requests that share the same header value (scoped per account,
or per IP for anonymous uploads) within 20s are appended to the same box. This lets a multi-file
ShareX selection — which ShareX sends as separate back-to-back requests — land as one shareable
link. The shipped `.sxcu` sets `X-Warpbox-Batch: sharex`; remove that header for one box per file.
Requests without the header behave exactly as before.

## Stage 4 Accounts + Personal Boxes

- `/register` bootstraps the first admin account only when no users exist.
- `/login` and `/logout` provide cookie-based web sessions.
- `/app` is the personal dashboard for logged-in users, showing owned boxes, storage usage, upload
  history, and flat collections. Uploading still happens from the homepage.
- `/admin/users` lets admins create invite links, disable/reactivate users, and generate reset links.
- Logged-in browser uploads from `/` still use `POST /api/v1/upload`, but the resulting box is
  stored with owner and optional collection metadata.
- Admin users are exempt from the global max upload size on the homepage upload flow. Future
  per-user quotas should apply to this same upload path rather than creating a second uploader.
- `/admin/settings` controls anonymous uploads, anonymous max upload size, daily upload caps, default
  user storage quota, and usage retention.
- `/admin/users` shows storage/daily usage and lets admins set per-user storage quota overrides.
- `/admin/storage` manages the built-in local file backend and S3-compatible bucket backends.
- `/admin/bans` manages manual IP/CIDR bans and optional automatic bans for suspicious probes and
  repeated login failures. Auto-ban is off by default and configured from the admin UI.
- Upload limits now include daily bytes, daily box counts, active box counts, short-window request
  limits, max expiration days, local storage capacity in GB, and per-user policy overrides.
- Uploaded file content, thumbnails, and private box metadata use the selected storage backend.
  The bbolt database and JSON logs remain local under `./data/db` and `./data/logs`.
- Anonymous uploads, ShareX uploads, unlisted public box links, password protection, expiry, delete
  tokens, thumbnails, and cleanup continue to work as before.

Email delivery is intentionally deferred. Invite and reset links are copyable today; future SMTP
support will power public forgot-password and optional email delivery.

## Runtime Data

Warpbox keeps local runtime data under the configured data directory:

- `data/files/{box_id}/@each@{file_id}.ext` - uploaded file contents when the local backend is selected.
- `data/files/{box_id}/@thumb@{file_id}.jpg` - generated previews when the local backend is selected.
- `data/db/warpbox.bbolt` - bbolt metadata database for boxes and file records.
- `data/db/warpbox.bbolt` also stores users, sessions, invites, and collections.
- `data/db/warpbox.bbolt` stores upload policy settings and daily usage records keyed by plain IP
  for anonymous uploads and user ID for signed-in uploads.
- `data/db/warpbox.bbolt` stores manual bans, automatic ban settings, abuse counters, and malicious
  path rules.
- `data/logs/{YYYY-MM-DD}.log` - JSONL logs, one event per line.

## Static Asset Policy

The static handler sets long-lived immutable caching for images, video, audio, and fonts, shorter caching for CSS/JS, and gzip compression for compressible responses.