wireguard-vpn/README.md

# WireGuard Policy Firewall + WGRplane Control Plane

A complete WireGuard management solution combining two powerful components:

1. **WireGuard Dynamic Policy Firewall** - A lightweight, robust iptables/ipset policy engine that restricts and controls WireGuard peer traffic directly from `wg0.conf` using custom `#Access` comments.
2. **WGRplane** - A Go-native control plane application with Vue 3 frontend, providing a modern web dashboard for WireGuard management with real-time monitoring, peer CRUD, and hybrid firewall enforcement.

---

## 📑 Table of Contents

### Policy Firewall (Shell Scripts)
- [Architecture & Data Flow](#-architecture--data-flow)
- [Installation](#-installation)
- [Prerequisites](#-prerequisites)
- [wg0.conf Integration](#-integrasi-ke-wg0conf)
- [CLI Usage](#-wg-policy-ctl-cli-usage)
- [Systemd Integration](#-systemd-integration-watcher-daemon)

### WGRplane (Go App)
- [WGRplane Overview](#-wgrplane-overview)
- [WGRplane Architecture](#-wgrplane-architecture)
- [WGRplane Features](#-wgrplane-features)
- [WGRplane Tech Stack](#-wgrplane-tech-stack)
- [WGRplane API Endpoints](#-wgrplane-api-endpoints)
- [WGRplane Installation](#-wgrplane-installation)

---

## 🎯 Architecture & Data Flow

1. **`wg0.conf`**: The standard WireGuard configuration. Contains standard `[Peer]` configs alongside a custom `#Access` tag.
2. **`wg-sync-policy.sh`**: Safely parses `wg0.conf` and generates a structured `/etc/wireguard/policy.json` atomically.
3. **`wg-policy-engine.sh`**: Reads `policy.json` to generate robust rules, applying `iptables` and `ipset` directly to the system.
4. **Watcher Daemon**: Monitors `wg0.conf` for changes via `inotifywait` and triggers the pipeline seamlessly when updates are made.

---

## 📁 Installation

The easiest way to install is using the provided `install.sh` script, which automatically installs dependencies, copies all scripts to `/usr/local/bin/`, sets up the systemd daemon, and enables the service.

```bash
# Install everything
sudo ./install.sh install

# Uninstall everything
sudo ./install.sh uninstall
```

### Building the Installer (For Developers)

If you modify any of the source `.sh` or `.service` files, you must rebuild the `install.sh` script using the provided builders.

**On Linux (Bash):**
```bash
./build.sh
```

**On Windows (CMD/PowerShell):**
```cmd
build.bat
```

---

## 📦 Prerequisites

| Package | Required | Install |
|---------|----------|---------|
| `jq` | **Yes** | `apt install jq` |
| `inotify-tools` | **Yes** (for watcher daemon) | `apt install inotify-tools` |
| `ipset` | Optional | `apt install ipset` |

If `ipset` is not installed, the engine will automatically fall back to per-rule `iptables` whitelist entries. This works fine for small deployments. For large numbers of clients/targets, `ipset` is recommended for O(1) lookup performance.

---

## ⚙️ Integrasi ke `wg0.conf`

To integrate the engine, you need to append hooks into your `wg0.conf` interface block, and declare the `#Access` tags under each peer.

### 1. Interface Block (Hooks)
Add the `PostUp` and `PostDown` scripts so the engine initializes correctly during VPN startup and removes traces upon shutdown.

> **⚠️ WireGuard does NOT support multiline values.** Every command must be on a `PostUp = ...` or `PostDown = ...` line. Bare commands without the `PostUp =` prefix will cause `Configuration parsing error`.

```ini
[Interface]
Address = 10.0.0.1/24
ListenPort = 51820
PrivateKey = <SERVER_PRIVATE_KEY>

# Policy engine: auto-handles NAT, IP forwarding, and dynamic firewall rules
PostUp = /usr/local/bin/wg-sync-policy.sh; /usr/local/bin/wg-policy-engine.sh

# Policy engine: cleanup all firewall and routing traces
PostDown = /usr/local/bin/wg-policy-cleanup.sh
```

### 2. Peer Block (`#Access` Tags)
For each client, use the `#Access` comment line. Define the destinations (targets) the peer is allowed to access. You can separate multiple IPs or CIDRs with commas or semicolons.

> **⚠️ WARNING: Do NOT use `SaveConfig = true`!**
> WireGuard's `SaveConfig` feature overwrites `wg0.conf` directly and **strips all comments**, which will permanently delete all `#Access` tags. If you are using a Web UI/Dashboard, make sure it does not strip unknown comments when saving.

```ini
[Peer]
PublicKey = <CLIENT_1_PUBKEY>
AllowedIPs = 10.0.0.2/32
#Access 192.168.1.10/32, 192.168.12.0/24

[Peer]
PublicKey = <CLIENT_2_PUBKEY>
AllowedIPs = 10.0.0.3/32
#Access = 10.0.0.1/32

[Peer]
PublicKey = <CLIENT_3_PUBKEY>
AllowedIPs = 10.0.0.4/32
#Access 
# ^ (Empty Access implies internet-only, client isolation applies)
```

**⚠️ Important constraint:** Why `#Access` instead of just using `AllowedIPs` directly? 
WireGuard uses `AllowedIPs` for Cryptokey Routing (deciding which tunnel interface to route outbound packets). If you put an internal server IP inside the server's `wg0.conf` AllowedIPs block, WireGuard will aggressively capture and redirect packets bound for that internal server into the VPN client's tunnel. The `#Access` comment separates routing parameters from firewall parameters cleanly.

---

## 🛠 `wg-policy-ctl` CLI Usage

You don't need to manually interact with `iptables` or `.json` files. Use the `wg-policy-ctl` wrapper.

```bash
# View the health of the firewall engine and active locks
wg-policy-ctl status

# View the raw, parsed JSON policy
wg-policy-ctl policy

# Inspect active iptables rules
wg-policy-ctl rules

# Check memory sets mapping IP targets (ipset)
wg-policy-ctl ipset

# Manually re-sync rules immediately
wg-policy-ctl reload

# Inspect dropped packets (rate-limited log output)
wg-policy-ctl log

# See connection statistics, how many targets loaded
wg-policy-ctl stats

# Force validation of the policy schema
wg-policy-ctl validate
```

---

## 🔧 Systemd Integration (Watcher Daemon)

If you use the `install.sh` script, the daemon is automatically installed, enabled, and started for you. It monitors `wg0.conf` for changes and triggers the pipeline seamlessly.

### Manual File Installation (If not using install.sh)
Place the three provided systemd unit files into `/etc/systemd/system/`.

| Systemd File | Location | Description |
|--------------|----------|-------------|
| `wg-policy.service` | `/etc/systemd/system/wg-policy.service` | The main daemon that runs `wg-sync-watch.sh` |
| `wg-policy-health.timer` | `/etc/systemd/system/wg-policy-health.timer` | Triggers the health check every 5 minutes |
| `wg-policy-health.service`| `/etc/systemd/system/wg-policy-health.service`| Executes the actual health check logic |

```bash
# Example copy command
cp wg-policy.service wg-policy-health.timer wg-policy-health.service /etc/systemd/system/
```

### 2. Enable & Start Services
After copying the files, reload systemd to recognize them, then enable and start the services.

```bash
systemctl daemon-reload
systemctl enable wg-policy.service
systemctl enable wg-policy-health.timer
systemctl start wg-policy.service
systemctl start wg-policy-health.timer
```

Check the watcher logs:
```bash
journalctl -u wg-policy.service -f
```

---

## 🚀 WGRplane Overview

**WGRplane** is a Go-native WireGuard control plane application with a Vue 3 frontend, providing a modern web dashboard for WireGuard management. It features a single Go binary backend, SPA frontend, dynamic policy firewall integration, and glassmorphism UI design.

The application lives in the `/app` directory. For full documentation, see [`app/README.md`](app/README.md).

---

## 🏗 WGRplane Architecture

```
wg0.conf (with/without #Access)
        ↓
┌─────────────────────────────────────────────┐
│  WGRplane (Go Binary :10087)                │
│  ┌───────────┐  ┌──────────┐  ┌──────────┐  │
│  │ Gorilla   │  │ GORM     │  │ nftables │  │
│  │ Mux Router│  │ SQLite   │  │ Engine   │  │
│  └───────────┘  └──────────┘  └──────────┘  │
│  ┌───────────┐  ┌──────────┐  ┌──────────┐  │
│  │ Webhook   │  │ Scheduler│  │ WebSocket│  │
│  │ Engine    │  │ Cron     │  │ Hub      │  │
│  └───────────┘  └──────────┘  └──────────┘  │
│  ┌───────────┐  ┌──────────┐  ┌──────────┐  │
│  │ Auth      │  │ SMTP     │  │ Plugins  │  │
│  │ JWT/TOTP  │  │ Email    │  │ TG/Slack │  │
│  └───────────┘  └──────────┘  └──────────┘  │
└─────────────────────────────────────────────┘
        ↓ HTTP/WebSocket
┌─────────────────────────────────────────────┐
│  Frontend (Vue 3 + TypeScript + Tailwind)   │
│  Glassmorphism UI, i18n, Dark/Light mode    │
└─────────────────────────────────────────────┘
```

### Hybrid Mode

WGRplane supports two server modes:

- **`forward`** - Directly applies nftables rules on the local machine. Peer policies are enforced via `nft` commands.
- **`standalone`** - Acts as a control plane that triggers webhooks to remote WireGuard servers. Policy enforcement happens on the remote side.

### 2-Column Policy

Each peer has two independent policy columns:

| Column | Function |
|--------|----------|
| **AllowAccess** | List of CIDRs the peer can access (internal targets) |
| **AllowInternet** | Boolean flag. If `true`, peer gets unlimited internet access (MASQUERADE) |

Peers without any rules are isolated from other peers and the internet by default.

---

## ✨ WGRplane Features

- **Go-Native Architecture**: Single Go binary handles all API, database, webhooks, scheduler, and nftables. No Python/Flask needed.
- **Complete Peer CRUD**: Add, edit, delete peers. Generate QR codes for mobile client import. Export `.conf` configuration files.
- **Hybrid Mode**: `forward` mode (local nftables) or `standalone` mode (webhook to remote servers).
- **2-Column Policy UI**: "Allow Access" column (firewall whitelist CIDR) and "Allow Internet" toggle per peer.
- **Real-time Monitoring**: WebSocket broadcasts peer statistics and traffic every 5 seconds.
- **Automated Scheduling**: Daily cron jobs to delete expired peers, restrict over-limit peers, and reset monthly data usage.
- **Security**: API Key authentication (`wg-rplane-datadunia`), JWT Bearer tokens, and TOTP (2FA).
- **Webhook Engine**: Integration with remote servers (Mikrotik, etc.). Retry with exponential backoff, custom headers, Go templates.
- **Plugin System**: Telegram, Slack, and Traffic Logger notifications.
- **i18n & Themes**: Multi-language (English, Indonesian, Chinese). Dark/Light/Auto mode.
- **Glassmorphism UI**: Futuristic design with frosted glass cards, buttons, and inputs.

---

## 🛠 WGRplane Tech Stack

| Component | Technology |
|-----------|------------|
| **Backend** | Go, Gorilla Mux, GORM (SQLite via glebarez/sqlite) |
| **Frontend** | Vue 3, TypeScript, Vite, TailwindCSS 4, vue-i18n 9 |
| **Auth** | JWT (golang-jwt/v5), TOTP (pquerna/otp), API Key |
| **WebSockets** | gorilla/websocket |
| **Webhooks** | Go net/http with retry + exponential backoff |
| **Scheduling** | robfig/cron v3 |
| **QR Code** | skip2/go-qrcode |
| **Email** | jordan-wright/email (SMTP) |
| **Firewall** | Bash, iptables, ipset, nftables, inotify-tools, jq |
| **Container** | Docker (multi-stage build), docker-compose |

---

## 🌐 WGRplane API Endpoints Summary

All endpoints are served on port **10087**. For complete API documentation with request/response details, see [`app/README.md`](app/README.md) or visit `/swagger/` on your running instance.

### Authentication

| Method | Header | Notes |
|--------|--------|-------|
| API Key | `wg-rplane-datadunia: <KEY>` | Set via env var `WG_API_KEY`. Default: `test-api-key` |
| JWT | `Authorization: Bearer <TOKEN>` | Expires in 15 minutes. Secret via env var `JWT_SECRET` |
| TOTP | `X-TOTP: <CODE>` | Required if user enables TOTP |

### Main Endpoints

| Endpoint | Method | Description |
|----------|--------|-------------|
| `/api/servers` | `GET/POST` | List all servers / Create new server |
| `/api/servers/{id}` | `GET/PUT/DELETE` | Get/Update/Delete server |
| `/api/servers/{id}/peers` | `GET/POST` | List peers / Create new peer |
| `/api/peers/{id}` | `PUT/DELETE` | Update/Delete peer |
| `/api/peers/{id}/config` | `GET` | Download WireGuard `.conf` file |
| `/api/peers/{id}/qrcode` | `GET` | Generate QR code PNG for mobile import |
| `/api/servers/{id}/webhooks` | `GET/POST` | List/Create webhooks |
| `/api/stats` | `GET` | Global statistics |
| `/ws/stats` | WebSocket | Real-time stats broadcast (5s interval) |
| `/swagger/` | - | Interactive Swagger UI documentation |

---

## 📦 WGRplane Installation

### Option 1: Docker Compose (Recommended)

```bash
# Clone repository
git clone https://git.datadunia.com/hainzero/WGRplane.git
cd 03.wireguard-policy

# Start WGRplane and WireGuard
docker compose up -d

# Access dashboard at http://localhost:10087
```

### Option 2: Install Script

```bash
# Run automated installer (Ubuntu/Debian/CentOS)
sudo ./install.sh install

# Uninstall
sudo ./install.sh uninstall
```

### Option 3: Manual Build

```bash
# Build Go binary
cd app
go build -o ../wgrplane .
cd ..

# Build frontend
cd app/frontend
npm install && npm run build
cd ../..

# Run
./wgrplane
# Server starts on :10087
```

### Option 4: Systemd Service

```bash
# Install service file
sudo cp wgrplane.service /etc/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable wgrplane.service
sudo systemctl start wgrplane.service

# View logs
journalctl -u wgrplane.service -f
```

---

## 📁 Project Structure

```
03.wireguard-policy/
├── app/                          # Go backend + Vue frontend
│   ├── main.go                   # Bootstrap server, routing, init DB
│   ├── handlers.go               # REST API route handlers
│   ├── models.go                 # GORM models (Server, Peer, Webhook, SMTP)
│   ├── auth.go                   # JWT, TOTP, API key auth middleware
│   ├── nftables.go               # nftables rule management (mode forward)
│   ├── webhook.go                # Webhook engine with retry/backoff
│   ├── scheduler.go              # Cron jobs (expiry, data limit, reset)
│   ├── stats.go                  # WebSocket Hub for real-time stats
│   ├── frontend/                 # Vue 3 SPA (TypeScript, TailwindCSS)
│   └── docs/                     # Swagger documentation
├── wg-sync-policy.sh             # Parse wg0.conf → policy.json
├── wg-policy-engine.sh           # Apply policy.json → iptables/ipset
├── wg-sync-watch.sh              # inotifywait watcher daemon
├── wg-policy-ctl                 # CLI wrapper for policy management
├── wg-policy-cleanup.sh          # Cleanup script for PostDown
├── wg-policy.service             # Systemd unit for watcher daemon
├── wgrplane.service              # Systemd unit for Go backend
├── install.sh                    # Automated installer (Docker + services)
├── Dockerfile                    # Multi-stage Docker build
├── docker-compose.yml            # Docker Compose stack
└── README.md                     # This file
```

For detailed WGRplane documentation including webhooks, plugins, scheduler, and frontend details, refer to [`app/README.md`](app/README.md).