feat: add wireguard secure installer with modular architecture

This commit introduces a new WireGuard VPN installer with enterprise-grade security features. The installer includes:

- Zero-touch installation with automatic configuration
- Modular architecture for maintainability (separate lib files)
- Client management interface with bandwidth monitoring
- Support for multiple Linux distributions
- Secure defaults and hardened configurations

The implementation provides a complete solution for deploying WireGuard VPN servers with minimal user interaction while maintaining security best practices.
This commit is contained in:
2025-11-30 14:55:15 +07:00
commit 35ff83baca
12 changed files with 1322 additions and 0 deletions

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The MIT License (MIT)
Copyright (c) 2013 Viktor Villainov
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# WireGuard Secure Installer Enterprise
![Badge](https://img.shields.io/badge/Security-Hardened-green)
![Badge](https://img.shields.io/badge/License-MIT-blue)
![Badge](https://img.shields.io/badge/Platform-Linux-lightgrey)
**Automated, Secure, and Modular WireGuard VPN Installer for Enterprise Linux.**
Project ini dirancang untuk instalasi **Zero-Touch** (Otomatis Penuh) dengan standar keamanan tinggi. Cocok untuk server Ubuntu, Debian, CentOS, AlmaLinux, dan Rocky Linux.
## 🚀 Fitur Utama
* **Zero-Touch Install:** Cukup jalankan satu perintah, sistem akan terinstall lengkap dengan Firewall dan Konfigurasi.
* **Secure by Default:** Verifikasi Checksum, Hardened Config, dan Permissions yang ketat.
* **Modular Architecture:** Kode terstruktur rapi untuk kemudahan audit dan maintenance.
* **Management Interface:** Script bawaan untuk menambah/menghapus user dengan mudah.
* **Usage Monitoring:** Fitur eksklusif untuk melihat penggunaan bandwidth per user.
## 📥 Instalasi Cepat (One-Liner)
Login sebagai `root` di server Anda, lalu jalankan perintah berikut:
```bash
wget -O - https://raw.githubusercontent.com/fadhila36/wireguard-secure-installer/main/bootstrap.sh | bash
```
Tunggu proses selesai. QR Code untuk client pertama (client_admin) akan muncul otomatis di layar.
## 🛠️ Cara Penggunaan (Manajemen User)
Setelah instalasi selesai, Anda dapat mengelola VPN menggunakan script `manage.sh` yang terinstall di folder `/opt/wg-installer/`.
Jalankan perintah ini untuk membuka menu:
```bash
bash /opt/wg-installer/manage.sh
```
**Menu Tersedia:**
1. **Add New Client:** Menambah user baru & generate QR Code.
2. **Remove Client:** Menghapus akses user secara real-time.
3. **View Bandwidth Usage:** Melihat log penggunaan data (Download/Upload) per user.
4. **Exit:** Keluar.
## 📊 Contoh Tampilan Log Usage
```text
Client Name | Public Key | Transfer Rx | Transfer Tx | Last Seen
--------------------------------------------------------------------------
client_admin | xCy...9d2 | 1.2 GB | 400 MB | 2 mins ago
iphone_fadhil | bKa...7s1 | 50 MB | 10 MB | 1 hour ago
```
## 📋 Persyaratan Sistem
* **OS:** Ubuntu 20.04/22.04/24.04, Debian 11/12, CentOS 9 Stream, Alma/Rocky 9.
* **Kernel:** Mendukung modul WireGuard (hampir semua kernel Linux modern).
* **Virtualisasi:** Mendukung KVM, VMware, LXC (dengan akses TUN enabled).
## 🔒 Struktur Project
```text
/opt/wg-installer/
├── install.sh # Core Logic
├── config.env # Konfigurasi Default
├── manage.sh # Menu Manajemen User
└── lib/ # Library Modules (Network, OS, Security)
```
## 📝 Credits
Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
GitHub: [github.com/fadhila36](https://github.com/fadhila36)
Released under the MIT License.

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
set -e
REPO_URL="https://github.com/fadhila36/wireguard-secure-installer.git"
INSTALL_DIR="/opt/wg-installer"
echo "Bootstrapping WireGuard Secure Installer..."
# Check Root
if [ "$EUID" -ne 0 ]; then
echo "Error: Must be run as root."
exit 1
fi
# Install Git if missing
if ! command -v git >/dev/null; then
echo "Installing Git..."
if [ -f /etc/debian_version ]; then
apt-get update && apt-get install -y git
elif [ -f /etc/redhat-release ]; then
dnf install -y git
fi
fi
# Clone or Update Repo
if [ -d "$INSTALL_DIR" ]; then
echo "Updating existing installation..."
cd "$INSTALL_DIR"
git pull
else
echo "Cloning repository..."
git clone "$REPO_URL" "$INSTALL_DIR"
cd "$INSTALL_DIR"
fi
# Make scripts executable
chmod +x install.sh manage.sh lib/*.sh
# Run Installer
./install.sh

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
# Server Configuration
SERVER_PORT=51820
SERVER_WG_NIC="wg0"
SERVER_DNS="1.1.1.1, 1.0.0.1"
ALLOWED_IPS="0.0.0.0/0, ::/0"
# Initial Client Configuration
CLIENT_NAME="client_admin"
# Paths
INSTALL_DIR="/opt/wg-installer"
LOG_FILE="/var/log/wireguard-install.log"
WG_CONFIG="/etc/wireguard/${SERVER_WG_NIC}.conf"

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
# Set strict mode
set -e
# Load Config and Libraries
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/config.env"
source "$SCRIPT_DIR/lib/utils.sh"
source "$SCRIPT_DIR/lib/network.sh"
source "$SCRIPT_DIR/lib/os_detect.sh"
source "$SCRIPT_DIR/lib/wg_core.sh"
# Trap for cleanup
trap cleanup EXIT
# Main Logic
main() {
check_root
show_banner
log_info "Starting Zero-Touch Installation..."
check_os
install_dependencies
detect_main_interface
detect_public_ip
configure_firewall
generate_keys
generate_server_config
start_wireguard
# Create default admin client (IP .2) if not exists
if ! grep -q "### Client: $CLIENT_NAME" "$WG_CONFIG"; then
create_client_config "$CLIENT_NAME" "2"
else
log_info "Default client '$CLIENT_NAME' already exists. Skipping creation."
fi
log_info "Installation Completed Successfully!"
echo -e "${GREEN}WireGuard is installed and running.${NC}"
echo -e "Client Config: ${YELLOW}$INSTALL_DIR/clients/$CLIENT_NAME.conf${NC}"
echo -e "Manage script: ${YELLOW}$INSTALL_DIR/manage.sh${NC}"
}
main

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
new_client() {
echo -e "${BLUE}=== Add New Client ===${NC}"
echo -n "Enter Client Name (no spaces): "
read -r CLIENT_NAME
if [[ -z "$CLIENT_NAME" ]]; then
log_error "Client name cannot be empty."
return
fi
# Check if client already exists
if grep -q "### Client: $CLIENT_NAME" "$WG_CONFIG"; then
log_error "Client '$CLIENT_NAME' already exists."
return
fi
# Find next available IP octet
# We scan for 10.66.66.X and find the first missing number starting from 2
for i in {2..254}; do
if ! grep -q "10.66.66.$i" "$WG_CONFIG"; then
NEXT_IP="$i"
break
fi
done
if [[ -z "$NEXT_IP" ]]; then
fatal_error "No available IPs in the subnet."
fi
# Re-detect public IP in case it changed
detect_public_ip
# Use existing function from wg_core.sh
create_client_config "$CLIENT_NAME" "$NEXT_IP"
echo -e "${GREEN}Client $CLIENT_NAME added with IP 10.66.66.$NEXT_IP${NC}"
}
remove_client() {
echo -e "${BLUE}=== Remove Client ===${NC}"
# List clients
echo "Existing Clients:"
grep "### Client:" "$WG_CONFIG" | cut -d ' ' -f 3 | nl -s ') '
echo -n "Enter Client Name to remove: "
read -r CLIENT_TO_REMOVE
if [[ -z "$CLIENT_TO_REMOVE" ]]; then
log_error "Client name cannot be empty."
return
fi
if ! grep -q "### Client: $CLIENT_TO_REMOVE" "$WG_CONFIG"; then
log_error "Client '$CLIENT_TO_REMOVE' not found."
return
fi
# Backup config
cp "$WG_CONFIG" "${WG_CONFIG}.bak"
# Remove the block from config
# We use a more robust sed command that handles the block structure
# It deletes from the line containing "### Client: NAME" up to the next blank line
sed -i "/### Client: $CLIENT_TO_REMOVE/,/^$/d" "$WG_CONFIG"
# Also clean up any potential double empty lines left behind
sed -i '/^$/N;/^\n$/D' "$WG_CONFIG"
# Reload WireGuard
wg syncconf "$SERVER_WG_NIC" <(wg-quick strip "$SERVER_WG_NIC")
# Remove config file
rm -f "$INSTALL_DIR/clients/$CLIENT_TO_REMOVE.conf"
echo -e "${GREEN}Client $CLIENT_TO_REMOVE removed.${NC}"
}
view_usage_logs() {
echo -e "${BLUE}=== Bandwidth Usage ===${NC}"
# Header
printf "%-20s | %-15s | %-15s | %-20s\n" "Client Name" "Data Received" "Data Sent" "Last Handshake"
echo "--------------------------------------------------------------------------------"
# Get dump
DUMP=$(wg show "$SERVER_WG_NIC" dump)
# Iterate over clients in config to map names to keys
# Grep Client Names
CLIENT_NAMES=$(grep "### Client:" "$WG_CONFIG" | cut -d ' ' -f 3)
for NAME in $CLIENT_NAMES; do
# Get Public Key for this client from config
# We need to read the config file more smartly.
# Let's assume the structure:
# ### Client: NAME
# [Peer]
# PublicKey = KEY
# Extract Public Key for the specific client
PUB_KEY=$(sed -n "/### Client: $NAME/,/PublicKey/p" "$WG_CONFIG" | grep "PublicKey" | cut -d ' ' -f 3)
if [[ -n "$PUB_KEY" ]]; then
# Find stats in dump
# Dump format: public-key preshared-key endpoint allowed-ips latest-handshake transfer-rx transfer-tx persistent-keepalive
STATS=$(echo "$DUMP" | grep "$PUB_KEY")
if [[ -n "$STATS" ]]; then
RX_BYTES=$(echo "$STATS" | awk '{print $6}')
TX_BYTES=$(echo "$STATS" | awk '{print $7}')
LAST_HANDSHAKE=$(echo "$STATS" | awk '{print $5}')
# Convert Bytes
RX_HUMAN=$(numfmt --to=iec-i --suffix=B "$RX_BYTES")
TX_HUMAN=$(numfmt --to=iec-i --suffix=B "$TX_BYTES")
# Convert Handshake Time
if [[ "$LAST_HANDSHAKE" -eq 0 ]]; then
TIME_HUMAN="Never"
else
TIME_HUMAN=$(date -d @"$LAST_HANDSHAKE" '+%Y-%m-%d %H:%M')
fi
printf "%-20s | %-15s | %-15s | %-20s\n" "$NAME" "$RX_HUMAN" "$TX_HUMAN" "$TIME_HUMAN"
fi
fi
done
echo ""
echo -n "Press Enter to continue..."
read -r
}

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
detect_public_ip() {
log_info "Detecting public IP..."
# Try multiple sources for redundancy
PUBLIC_IP=$(curl -s https://api.ipify.org || curl -s https://ifconfig.me || curl -s https://icanhazip.com)
if [[ -z "$PUBLIC_IP" ]]; then
log_warn "Failed to detect public IP. Falling back to local interface IP."
# Fallback to default route IP
PUBLIC_IP=$(ip route get 1.1.1.1 | grep -oP 'src \K\S+')
fi
if [[ -z "$PUBLIC_IP" ]]; then
fatal_error "Could not detect Public IP or Local IP. Network configuration failed."
fi
log_info "Public IP detected: $PUBLIC_IP"
}
detect_main_interface() {
MAIN_NIC=$(ip route get 1.1.1.1 | grep -oP 'dev \K\S+')
if [[ -z "$MAIN_NIC" ]]; then
fatal_error "Could not detect main network interface."
fi
log_info "Main Interface detected: $MAIN_NIC"
}
configure_firewall() {
log_info "Configuring Firewall..."
# Enable IP Forwarding (Idempotent: Overwrites the file)
cat > /etc/sysctl.d/99-wireguard.conf <<EOF
net.ipv4.ip_forward=1
net.ipv6.conf.all.forwarding=1
EOF
sysctl --system >> "$LOG_FILE" 2>&1
# Detect Firewall Type (UFW, Firewalld, or IPTables)
if command -v ufw >/dev/null; then
log_info "UFW detected. Adding rules..."
ufw allow "$SERVER_PORT"/udp
ufw allow OpenSSH
# UFW routing rules are complex to automate safely without breaking existing config,
# relying on PostUp/PostDown in wg0.conf for NAT is safer and standard for WG.
elif command -v firewall-cmd >/dev/null; then
log_info "Firewalld detected. Adding rules..."
firewall-cmd --zone=public --add-port="$SERVER_PORT"/udp --permanent
firewall-cmd --zone=public --add-masquerade --permanent
firewall-cmd --reload
else
log_info "No specific firewall manager found. Relying on WireGuard PostUp/PostDown for iptables."
fi
}

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
check_os() {
if [ -f /etc/os-release ]; then
. /etc/os-release
OS=$ID
VERSION_ID=$VERSION_ID
else
fatal_error "Cannot detect OS. /etc/os-release not found."
fi
log_info "Detected OS: $OS $VERSION_ID"
case "$OS" in
ubuntu|debian)
PKG_MANAGER="apt-get"
UPDATE_CMD="apt-get update"
INSTALL_CMD="apt-get install -y"
;;
centos|rhel|rocky|almalinux)
PKG_MANAGER="dnf"
UPDATE_CMD="dnf check-update" # dnf update is slow, check-update is enough to refresh metadata
INSTALL_CMD="dnf install -y"
;;
*)
fatal_error "Unsupported OS: $OS. Supported: Ubuntu, Debian, CentOS, Rocky, AlmaLinux."
;;
esac
}
install_dependencies() {
log_info "Installing dependencies..."
$UPDATE_CMD >> "$LOG_FILE" 2>&1
case "$OS" in
ubuntu|debian)
$INSTALL_CMD wireguard qrencode curl iptables >> "$LOG_FILE" 2>&1
;;
centos|rhel|rocky|almalinux)
$INSTALL_CMD epel-release >> "$LOG_FILE" 2>&1
$INSTALL_CMD wireguard-tools qrencode curl iptables-services >> "$LOG_FILE" 2>&1
;;
esac
if ! command -v wg >/dev/null; then
fatal_error "WireGuard installation failed."
fi
}

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color
log_info() {
echo -e "${GREEN}[INFO]${NC} $1"
echo "[INFO] $1" >> "$LOG_FILE"
}
log_warn() {
echo -e "${YELLOW}[WARN]${NC} $1"
echo "[WARN] $1" >> "$LOG_FILE"
}
log_error() {
echo -e "${RED}[ERROR]${NC} $1"
echo "[ERROR] $1" >> "$LOG_FILE"
}
fatal_error() {
log_error "$1"
exit 1
}
check_root() {
if [ "$EUID" -ne 0 ]; then
fatal_error "This script must be run as root."
fi
}
show_banner() {
clear
echo -e "${BLUE}"
echo "========================================================================="
echo " WireGuard Secure Installer Enterprise"
echo " (c) 2025 Muhammad Fadhila Abiyyu Faris"
echo " https://github.com/fadhila36/wireguard-secure-installer"
echo "========================================================================="
echo -e "${NC}"
}
cleanup() {
if [ $? -ne 0 ]; then
log_error "An error occurred. Check $LOG_FILE for details."
fi
}

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
generate_keys() {
if [ -f "$WG_CONFIG" ]; then
log_warn "WireGuard config already exists. Skipping key generation to prevent overwrite."
# Extract existing private key for context if needed, or just return
SERVER_PRIV_KEY=$(grep "PrivateKey" "$WG_CONFIG" | cut -d ' ' -f 3)
SERVER_PUB_KEY=$(echo "$SERVER_PRIV_KEY" | wg pubkey)
return
fi
log_info "Generating Server Keys..."
umask 077
SERVER_PRIV_KEY=$(wg genkey)
SERVER_PUB_KEY=$(echo "$SERVER_PRIV_KEY" | wg pubkey)
}
generate_server_config() {
if [ -f "$WG_CONFIG" ]; then
log_warn "WireGuard config already exists. Skipping config generation."
return
fi
log_info "Generating Server Config..."
cat > "$WG_CONFIG" <<EOF
[Interface]
Address = 10.66.66.1/24,fd42:42:42::1/64
ListenPort = $SERVER_PORT
PrivateKey = $SERVER_PRIV_KEY
PostUp = iptables -A FORWARD -i $SERVER_WG_NIC -j ACCEPT; iptables -t nat -A POSTROUTING -o $MAIN_NIC -j MASQUERADE; ip6tables -A FORWARD -i $SERVER_WG_NIC -j ACCEPT; ip6tables -t nat -A POSTROUTING -o $MAIN_NIC -j MASQUERADE
PostDown = iptables -D FORWARD -i $SERVER_WG_NIC -j ACCEPT; iptables -t nat -D POSTROUTING -o $MAIN_NIC -j MASQUERADE; ip6tables -D FORWARD -i $SERVER_WG_NIC -j ACCEPT; ip6tables -t nat -D POSTROUTING -o $MAIN_NIC -j MASQUERADE
EOF
chmod 600 "$WG_CONFIG"
}
start_wireguard() {
log_info "Starting WireGuard Service..."
systemctl enable "wg-quick@$SERVER_WG_NIC" >> "$LOG_FILE" 2>&1
systemctl start "wg-quick@$SERVER_WG_NIC" >> "$LOG_FILE" 2>&1
# Verify status
if systemctl is-active --quiet "wg-quick@$SERVER_WG_NIC"; then
log_info "WireGuard Service is RUNNING."
else
fatal_error "Failed to start WireGuard service."
fi
}
create_client_config() {
local CLIENT_NAME=$1
local CLIENT_IP_SUFFIX=$2 # e.g., 2 for 10.66.66.2
log_info "Creating Client: $CLIENT_NAME"
CLIENT_PRIV_KEY=$(wg genkey)
CLIENT_PUB_KEY=$(echo "$CLIENT_PRIV_KEY" | wg pubkey)
CLIENT_PRESHARED_KEY=$(wg genpsk)
# Add peer to server config
cat >> "$WG_CONFIG" <<EOF
### Client: $CLIENT_NAME
[Peer]
PublicKey = $CLIENT_PUB_KEY
PresharedKey = $CLIENT_PRESHARED_KEY
AllowedIPs = 10.66.66.$CLIENT_IP_SUFFIX/32,fd42:42:42::$CLIENT_IP_SUFFIX/128
EOF
# Update live interface
wg syncconf "$SERVER_WG_NIC" <(wg-quick strip "$SERVER_WG_NIC")
# Generate Client Config File
mkdir -p "$INSTALL_DIR/clients"
cat > "$INSTALL_DIR/clients/$CLIENT_NAME.conf" <<EOF
[Interface]
PrivateKey = $CLIENT_PRIV_KEY
Address = 10.66.66.$CLIENT_IP_SUFFIX/24,fd42:42:42::$CLIENT_IP_SUFFIX/64
DNS = $SERVER_DNS
[Peer]
PublicKey = $SERVER_PUB_KEY
PresharedKey = $CLIENT_PRESHARED_KEY
Endpoint = $PUBLIC_IP:$SERVER_PORT
AllowedIPs = $ALLOWED_IPS
PersistentKeepalive = 25
EOF
log_info "Client config saved to: $INSTALL_DIR/clients/$CLIENT_NAME.conf"
# Show QR Code
echo -e "${BLUE}Scan this QR Code to connect:${NC}"
qrencode -t ansiutf8 < "$INSTALL_DIR/clients/$CLIENT_NAME.conf"
}

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#!/bin/bash
# WireGuard Secure Installer
# Copyright (c) 2025 Muhammad Fadhila Abiyyu Faris
# GitHub: [github.com/fadhila36/wireguard-secure-installer](https://github.com/fadhila36/wireguard-secure-installer)
# Load Config and Libraries
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/config.env"
source "$SCRIPT_DIR/lib/utils.sh"
source "$SCRIPT_DIR/lib/network.sh"
source "$SCRIPT_DIR/lib/wg_core.sh" # Needed for create_client_config
source "$SCRIPT_DIR/lib/client_mgmt.sh"
check_root
while true; do
clear
echo -e "${BLUE}"
echo "================================================="
echo " WireGuard Management Menu"
echo "================================================="
echo -e "${NC}"
echo "1. Add New Client"
echo "2. Remove Client"
echo "3. View Bandwidth Usage"
echo "4. Exit"
echo ""
echo -n "Select an option [1-4]: "
read -r OPTION
case $OPTION in
1)
new_client
;;
2)
remove_client
;;
3)
view_usage_logs
;;
4)
echo "Exiting..."
exit 0
;;
*)
echo "Invalid option."
sleep 1
;;
esac
echo ""
echo -n "Press Enter to return to menu..."
read -r
done

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#!/bin/bash
#
# https://github.com/Nyr/wireguard-install
#
# Copyright (c) 2020 Nyr. Released under the MIT License.
# Detect Debian users running the script with "sh" instead of bash
if readlink /proc/$$/exe | grep -q "dash"; then
echo 'This installer needs to be run with "bash", not "sh".'
exit
fi
# Discard stdin. Needed when running from a one-liner which includes a newline
read -N 999999 -t 0.001
# Detect OS
# $os_version variables aren't always in use, but are kept here for convenience
if grep -qs "ubuntu" /etc/os-release; then
os="ubuntu"
os_version=$(grep 'VERSION_ID' /etc/os-release | cut -d '"' -f 2 | tr -d '.')
elif [[ -e /etc/debian_version ]]; then
os="debian"
os_version=$(grep -oE '[0-9]+' /etc/debian_version | head -1)
elif [[ -e /etc/almalinux-release || -e /etc/rocky-release || -e /etc/centos-release ]]; then
os="centos"
os_version=$(grep -shoE '[0-9]+' /etc/almalinux-release /etc/rocky-release /etc/centos-release | head -1)
elif [[ -e /etc/fedora-release ]]; then
os="fedora"
os_version=$(grep -oE '[0-9]+' /etc/fedora-release | head -1)
else
echo "This installer seems to be running on an unsupported distribution.
Supported distros are Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS and Fedora."
exit
fi
if [[ "$os" == "ubuntu" && "$os_version" -lt 2204 ]]; then
echo "Ubuntu 22.04 or higher is required to use this installer.
This version of Ubuntu is too old and unsupported."
exit
fi
if [[ "$os" == "debian" ]]; then
if grep -q '/sid' /etc/debian_version; then
echo "Debian Testing and Debian Unstable are unsupported by this installer."
exit
fi
if [[ "$os_version" -lt 11 ]]; then
echo "Debian 11 or higher is required to use this installer.
This version of Debian is too old and unsupported."
exit
fi
fi
if [[ "$os" == "centos" && "$os_version" -lt 9 ]]; then
os_name=$(sed 's/ release.*//' /etc/almalinux-release /etc/rocky-release /etc/centos-release 2>/dev/null | head -1)
echo "$os_name 9 or higher is required to use this installer.
This version of $os_name is too old and unsupported."
exit
fi
# Detect environments where $PATH does not include the sbin directories
if ! grep -q sbin <<< "$PATH"; then
echo '$PATH does not include sbin. Try using "su -" instead of "su".'
exit
fi
# Detect if BoringTun (userspace WireGuard) needs to be used
if ! systemd-detect-virt -cq; then
# Not running inside a container
use_boringtun="0"
elif grep -q '^wireguard ' /proc/modules; then
# Running inside a container, but the wireguard kernel module is available
use_boringtun="0"
else
# Running inside a container and the wireguard kernel module is not available
use_boringtun="1"
fi
if [[ "$EUID" -ne 0 ]]; then
echo "This installer needs to be run with superuser privileges."
exit
fi
if [[ "$use_boringtun" -eq 1 ]]; then
if [ "$(uname -m)" != "x86_64" ]; then
echo "In containerized systems without the wireguard kernel module, this installer
supports only the x86_64 architecture.
The system runs on $(uname -m) and is unsupported."
exit
fi
# TUN device is required to use BoringTun
if [[ ! -e /dev/net/tun ]] || ! ( exec 7<>/dev/net/tun ) 2>/dev/null; then
echo "The system does not have the TUN device available.
TUN needs to be enabled before running this installer."
exit
fi
fi
# Store the absolute path of the directory where the script is located
script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
new_client_dns () {
echo "Select a DNS server for the client:"
echo " 1) Default system resolvers"
echo " 2) Google"
echo " 3) 1.1.1.1"
echo " 4) OpenDNS"
echo " 5) Quad9"
echo " 6) Gcore"
echo " 7) AdGuard"
echo " 8) Specify custom resolvers"
read -p "DNS server [1]: " dns
until [[ -z "$dns" || "$dns" =~ ^[1-8]$ ]]; do
echo "$dns: invalid selection."
read -p "DNS server [1]: " dns
done
case "$dns" in
1|"")
# Locate the proper resolv.conf
# Needed for systems running systemd-resolved
if grep '^nameserver' "/etc/resolv.conf" | grep -qv '127.0.0.53' ; then
resolv_conf="/etc/resolv.conf"
else
resolv_conf="/run/systemd/resolve/resolv.conf"
fi
# Extract nameservers and provide them in the required format
dns=$(grep -v '^#\|^;' "$resolv_conf" | grep '^nameserver' | grep -v '127.0.0.53' | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | xargs | sed -e 's/ /, /g')
;;
2)
dns="8.8.8.8, 8.8.4.4"
;;
3)
dns="1.1.1.1, 1.0.0.1"
;;
4)
dns="208.67.222.222, 208.67.220.220"
;;
5)
dns="9.9.9.9, 149.112.112.112"
;;
6)
dns="95.85.95.85, 2.56.220.2"
;;
7)
dns="94.140.14.14, 94.140.15.15"
;;
8)
echo
until [[ -n "$custom_dns" ]]; do
echo "Enter DNS servers (one or more IPv4 addresses, separated by commas or spaces):"
read -p "DNS servers: " dns_input
# Convert comma delimited to space delimited
dns_input=$(echo "$dns_input" | tr ',' ' ')
# Validate and build custom DNS IP list
for dns_ip in $dns_input; do
if [[ "$dns_ip" =~ ^[0-9]{1,3}(\.[0-9]{1,3}){3}$ ]]; then
if [[ -z "$custom_dns" ]]; then
custom_dns="$dns_ip"
else
custom_dns="$custom_dns, $dns_ip"
fi
fi
done
if [ -z "$custom_dns" ]; then
echo "Invalid input."
else
dns="$custom_dns"
fi
done
;;
esac
}
new_client_setup () {
# Given a list of the assigned internal IPv4 addresses, obtain the lowest still
# available octet. Important to start looking at 2, because 1 is our gateway.
octet=2
while grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "^$octet$"; do
(( octet++ ))
done
# Don't break the WireGuard configuration in case the address space is full
if [[ "$octet" -eq 255 ]]; then
echo "253 clients are already configured. The WireGuard internal subnet is full!"
exit
fi
key=$(wg genkey)
psk=$(wg genpsk)
# Configure client in the server
cat << EOF >> /etc/wireguard/wg0.conf
# BEGIN_PEER $client
[Peer]
PublicKey = $(wg pubkey <<< $key)
PresharedKey = $psk
AllowedIPs = 10.7.0.$octet/32$(grep -q 'fddd:2c4:2c4:2c4::1' /etc/wireguard/wg0.conf && echo ", fddd:2c4:2c4:2c4::$octet/128")
# END_PEER $client
EOF
# Create client configuration
cat << EOF > "$script_dir"/"$client".conf
[Interface]
Address = 10.7.0.$octet/24$(grep -q 'fddd:2c4:2c4:2c4::1' /etc/wireguard/wg0.conf && echo ", fddd:2c4:2c4:2c4::$octet/64")
DNS = $dns
PrivateKey = $key
[Peer]
PublicKey = $(grep PrivateKey /etc/wireguard/wg0.conf | cut -d " " -f 3 | wg pubkey)
PresharedKey = $psk
AllowedIPs = 0.0.0.0/0, ::/0
Endpoint = $(grep '^# ENDPOINT' /etc/wireguard/wg0.conf | cut -d " " -f 3):$(grep ListenPort /etc/wireguard/wg0.conf | cut -d " " -f 3)
PersistentKeepalive = 25
EOF
}
if [[ ! -e /etc/wireguard/wg0.conf ]]; then
# Detect some Debian minimal setups where neither wget nor curl are installed
if ! hash wget 2>/dev/null && ! hash curl 2>/dev/null; then
echo "Wget is required to use this installer."
read -n1 -r -p "Press any key to install Wget and continue..."
apt-get update
apt-get install -y wget
fi
clear
echo 'Welcome to this WireGuard road warrior installer!'
# If system has a single IPv4, it is selected automatically. Else, ask the user
if [[ $(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}') -eq 1 ]]; then
ip=$(ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}')
else
number_of_ip=$(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}')
echo
echo "Which IPv4 address should be used?"
ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | nl -s ') '
read -p "IPv4 address [1]: " ip_number
until [[ -z "$ip_number" || "$ip_number" =~ ^[0-9]+$ && "$ip_number" -le "$number_of_ip" ]]; do
echo "$ip_number: invalid selection."
read -p "IPv4 address [1]: " ip_number
done
[[ -z "$ip_number" ]] && ip_number="1"
ip=$(ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | sed -n "$ip_number"p)
fi
# If $ip is a private IP address, the server must be behind NAT
if echo "$ip" | grep -qE '^(10\.|172\.1[6789]\.|172\.2[0-9]\.|172\.3[01]\.|192\.168)'; then
echo
echo "This server is behind NAT. What is the public IPv4 address or hostname?"
# Get public IP and sanitize with grep
get_public_ip=$(grep -m 1 -oE '^[0-9]{1,3}(\.[0-9]{1,3}){3}$' <<< "$(wget -T 10 -t 1 -4qO- "http://ip1.dynupdate.no-ip.com/" || curl -m 10 -4Ls "http://ip1.dynupdate.no-ip.com/")")
read -p "Public IPv4 address / hostname [$get_public_ip]: " public_ip
# If the checkip service is unavailable and user didn't provide input, ask again
until [[ -n "$get_public_ip" || -n "$public_ip" ]]; do
echo "Invalid input."
read -p "Public IPv4 address / hostname: " public_ip
done
[[ -z "$public_ip" ]] && public_ip="$get_public_ip"
fi
# If system has a single IPv6, it is selected automatically
if [[ $(ip -6 addr | grep -c 'inet6 [23]') -eq 1 ]]; then
ip6=$(ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}')
fi
# If system has multiple IPv6, ask the user to select one
if [[ $(ip -6 addr | grep -c 'inet6 [23]') -gt 1 ]]; then
number_of_ip6=$(ip -6 addr | grep -c 'inet6 [23]')
echo
echo "Which IPv6 address should be used?"
ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}' | nl -s ') '
read -p "IPv6 address [1]: " ip6_number
until [[ -z "$ip6_number" || "$ip6_number" =~ ^[0-9]+$ && "$ip6_number" -le "$number_of_ip6" ]]; do
echo "$ip6_number: invalid selection."
read -p "IPv6 address [1]: " ip6_number
done
[[ -z "$ip6_number" ]] && ip6_number="1"
ip6=$(ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}' | sed -n "$ip6_number"p)
fi
echo
echo "What port should WireGuard listen on?"
read -p "Port [51820]: " port
until [[ -z "$port" || "$port" =~ ^[0-9]+$ && "$port" -le 65535 ]]; do
echo "$port: invalid port."
read -p "Port [51820]: " port
done
[[ -z "$port" ]] && port="51820"
echo
echo "Enter a name for the first client:"
read -p "Name [client]: " unsanitized_client
# Allow a limited length and set of characters to avoid conflicts
client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client" | cut -c-15)
[[ -z "$client" ]] && client="client"
echo
new_client_dns
# Set up automatic updates for BoringTun if the user is fine with that
if [[ "$use_boringtun" -eq 1 ]]; then
echo
echo "BoringTun will be installed to set up WireGuard on the system."
read -p "Should automatic updates be enabled for it? [Y/n]: " boringtun_updates
until [[ "$boringtun_updates" =~ ^[yYnN]*$ ]]; do
echo "$remove: invalid selection."
read -p "Should automatic updates be enabled for it? [Y/n]: " boringtun_updates
done
[[ -z "$boringtun_updates" ]] && boringtun_updates="y"
if [[ "$boringtun_updates" =~ ^[yY]$ ]]; then
if [[ "$os" == "centos" || "$os" == "fedora" ]]; then
cron="cronie"
elif [[ "$os" == "debian" || "$os" == "ubuntu" ]]; then
cron="cron"
fi
fi
fi
echo
echo "WireGuard installation is ready to begin."
# Install a firewall if firewalld or iptables are not already available
if ! systemctl is-active --quiet firewalld.service && ! hash iptables 2>/dev/null; then
if [[ "$os" == "centos" || "$os" == "fedora" ]]; then
firewall="firewalld"
# We don't want to silently enable firewalld, so we give a subtle warning
# If the user continues, firewalld will be installed and enabled during setup
echo "firewalld, which is required to manage routing tables, will also be installed."
elif [[ "$os" == "debian" || "$os" == "ubuntu" ]]; then
# iptables is way less invasive than firewalld so no warning is given
firewall="iptables"
fi
fi
read -n1 -r -p "Press any key to continue..."
# Install WireGuard
# If BoringTun is not required, set up with the WireGuard kernel module
if [[ "$use_boringtun" -eq 0 ]]; then
if [[ "$os" == "ubuntu" ]]; then
# Ubuntu
apt-get update
apt-get install -y wireguard qrencode $firewall
elif [[ "$os" == "debian" ]]; then
# Debian
apt-get update
apt-get install -y wireguard qrencode $firewall
elif [[ "$os" == "centos" ]]; then
# CentOS
dnf install -y epel-release
dnf install -y wireguard-tools qrencode $firewall
elif [[ "$os" == "fedora" ]]; then
# Fedora
dnf install -y wireguard-tools qrencode $firewall
mkdir -p /etc/wireguard/
fi
# Else, BoringTun needs to be used
else
# Install required packages
if [[ "$os" == "ubuntu" ]]; then
# Ubuntu
apt-get update
apt-get install -y qrencode ca-certificates $cron $firewall
apt-get install -y wireguard-tools --no-install-recommends
elif [[ "$os" == "debian" ]]; then
# Debian
apt-get update
apt-get install -y qrencode ca-certificates $cron $firewall
apt-get install -y wireguard-tools --no-install-recommends
elif [[ "$os" == "centos" ]]; then
# CentOS
dnf install -y epel-release
dnf install -y wireguard-tools qrencode ca-certificates tar $cron $firewall
elif [[ "$os" == "fedora" ]]; then
# Fedora
dnf install -y wireguard-tools qrencode ca-certificates tar $cron $firewall
mkdir -p /etc/wireguard/
fi
# Grab the BoringTun binary using wget or curl and extract into the right place.
# Don't use this service elsewhere without permission! Contact me before you do!
{ wget -qO- https://wg.nyr.be/1/latest/download 2>/dev/null || curl -sL https://wg.nyr.be/1/latest/download ; } | tar xz -C /usr/local/sbin/ --wildcards 'boringtun-*/boringtun' --strip-components 1
# Configure wg-quick to use BoringTun
mkdir /etc/systemd/system/wg-quick@wg0.service.d/ 2>/dev/null
echo "[Service]
Environment=WG_QUICK_USERSPACE_IMPLEMENTATION=boringtun
Environment=WG_SUDO=1" > /etc/systemd/system/wg-quick@wg0.service.d/boringtun.conf
if [[ -n "$cron" ]] && [[ "$os" == "centos" || "$os" == "fedora" ]]; then
systemctl enable --now crond.service
fi
fi
# If firewalld was just installed, enable it
if [[ "$firewall" == "firewalld" ]]; then
systemctl enable --now firewalld.service
fi
# Generate wg0.conf
cat << EOF > /etc/wireguard/wg0.conf
# Do not alter the commented lines
# They are used by wireguard-install
# ENDPOINT $([[ -n "$public_ip" ]] && echo "$public_ip" || echo "$ip")
[Interface]
Address = 10.7.0.1/24$([[ -n "$ip6" ]] && echo ", fddd:2c4:2c4:2c4::1/64")
PrivateKey = $(wg genkey)
ListenPort = $port
EOF
chmod 600 /etc/wireguard/wg0.conf
# Enable net.ipv4.ip_forward for the system
echo 'net.ipv4.ip_forward=1' > /etc/sysctl.d/99-wireguard-forward.conf
# Enable without waiting for a reboot or service restart
echo 1 > /proc/sys/net/ipv4/ip_forward
if [[ -n "$ip6" ]]; then
# Enable net.ipv6.conf.all.forwarding for the system
echo "net.ipv6.conf.all.forwarding=1" >> /etc/sysctl.d/99-wireguard-forward.conf
# Enable without waiting for a reboot or service restart
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
fi
if systemctl is-active --quiet firewalld.service; then
# Using both permanent and not permanent rules to avoid a firewalld
# reload.
firewall-cmd --add-port="$port"/udp
firewall-cmd --zone=trusted --add-source=10.7.0.0/24
firewall-cmd --permanent --add-port="$port"/udp
firewall-cmd --permanent --zone=trusted --add-source=10.7.0.0/24
# Set NAT for the VPN subnet
firewall-cmd --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to "$ip"
if [[ -n "$ip6" ]]; then
firewall-cmd --zone=trusted --add-source=fddd:2c4:2c4:2c4::/64
firewall-cmd --permanent --zone=trusted --add-source=fddd:2c4:2c4:2c4::/64
firewall-cmd --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
firewall-cmd --permanent --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
fi
else
# Create a service to set up persistent iptables rules
iptables_path=$(command -v iptables)
ip6tables_path=$(command -v ip6tables)
# nf_tables is not available as standard in OVZ kernels. So use iptables-legacy
# if we are in OVZ, with a nf_tables backend and iptables-legacy is available.
if [[ $(systemd-detect-virt) == "openvz" ]] && readlink -f "$(command -v iptables)" | grep -q "nft" && hash iptables-legacy 2>/dev/null; then
iptables_path=$(command -v iptables-legacy)
ip6tables_path=$(command -v ip6tables-legacy)
fi
echo "[Unit]
After=network-online.target
Wants=network-online.target
[Service]
Type=oneshot
ExecStart=$iptables_path -w 5 -t nat -A POSTROUTING -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to $ip
ExecStart=$iptables_path -w 5 -I INPUT -p udp --dport $port -j ACCEPT
ExecStart=$iptables_path -w 5 -I FORWARD -s 10.7.0.0/24 -j ACCEPT
ExecStart=$iptables_path -w 5 -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
ExecStop=$iptables_path -w 5 -t nat -D POSTROUTING -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to $ip
ExecStop=$iptables_path -w 5 -D INPUT -p udp --dport $port -j ACCEPT
ExecStop=$iptables_path -w 5 -D FORWARD -s 10.7.0.0/24 -j ACCEPT
ExecStop=$iptables_path -w 5 -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" > /etc/systemd/system/wg-iptables.service
if [[ -n "$ip6" ]]; then
echo "ExecStart=$ip6tables_path -w 5 -t nat -A POSTROUTING -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to $ip6
ExecStart=$ip6tables_path -w 5 -I FORWARD -s fddd:2c4:2c4:2c4::/64 -j ACCEPT
ExecStart=$ip6tables_path -w 5 -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
ExecStop=$ip6tables_path -w 5 -t nat -D POSTROUTING -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to $ip6
ExecStop=$ip6tables_path -w 5 -D FORWARD -s fddd:2c4:2c4:2c4::/64 -j ACCEPT
ExecStop=$ip6tables_path -w 5 -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" >> /etc/systemd/system/wg-iptables.service
fi
echo "RemainAfterExit=yes
[Install]
WantedBy=multi-user.target" >> /etc/systemd/system/wg-iptables.service
systemctl enable --now wg-iptables.service
fi
# Generates the custom client.conf
new_client_setup
# Enable and start the wg-quick service
systemctl enable --now wg-quick@wg0.service
# Set up automatic updates for BoringTun if the user wanted to
if [[ "$boringtun_updates" =~ ^[yY]$ ]]; then
# Deploy upgrade script
cat << 'EOF' > /usr/local/sbin/boringtun-upgrade
#!/bin/bash
latest=$(wget -qO- https://wg.nyr.be/1/latest 2>/dev/null || curl -sL https://wg.nyr.be/1/latest 2>/dev/null)
# If server did not provide an appropriate response, exit
if ! head -1 <<< "$latest" | grep -qiE "^boringtun.+[0-9]+\.[0-9]+.*$"; then
echo "Update server unavailable"
exit
fi
current=$(/usr/local/sbin/boringtun -V)
if [[ "$current" != "$latest" ]]; then
download="https://wg.nyr.be/1/latest/download"
xdir=$(mktemp -d)
# If download and extraction are successful, upgrade the boringtun binary
if { wget -qO- "$download" 2>/dev/null || curl -sL "$download" ; } | tar xz -C "$xdir" --wildcards "boringtun-*/boringtun" --strip-components 1; then
systemctl stop wg-quick@wg0.service
rm -f /usr/local/sbin/boringtun
mv "$xdir"/boringtun /usr/local/sbin/boringtun
systemctl start wg-quick@wg0.service
echo "Successfully updated to $(/usr/local/sbin/boringtun -V)"
else
echo "boringtun update failed"
fi
rm -rf "$xdir"
else
echo "$current is up to date"
fi
EOF
chmod +x /usr/local/sbin/boringtun-upgrade
# Add cron job to run the updater daily at a random time between 3:00 and 5:59
{ crontab -l 2>/dev/null; echo "$(( $RANDOM % 60 )) $(( $RANDOM % 3 + 3 )) * * * /usr/local/sbin/boringtun-upgrade &>/dev/null" ; } | crontab -
fi
echo
qrencode -t ANSI256UTF8 < "$script_dir"/"$client.conf"
echo -e '\xE2\x86\x91 That is a QR code containing the client configuration.'
echo
echo "Finished!"
echo
echo "The client configuration is available in:" "$script_dir"/"$client.conf"
echo "New clients can be added by running this script again."
else
clear
echo "WireGuard is already installed."
echo
echo "Select an option:"
echo " 1) Add a new client"
echo " 2) Remove an existing client"
echo " 3) Remove WireGuard"
echo " 4) Exit"
read -p "Option: " option
until [[ "$option" =~ ^[1-4]$ ]]; do
echo "$option: invalid selection."
read -p "Option: " option
done
case "$option" in
1)
echo
echo "Provide a name for the client:"
read -p "Name: " unsanitized_client
# Allow a limited lenght and set of characters to avoid conflicts
client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client" | cut -c-15)
while [[ -z "$client" ]] || grep -q "^# BEGIN_PEER $client$" /etc/wireguard/wg0.conf; do
echo "$client: invalid name."
read -p "Name: " unsanitized_client
client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client" | cut -c-15)
done
echo
new_client_dns
new_client_setup
# Append new client configuration to the WireGuard interface
wg addconf wg0 <(sed -n "/^# BEGIN_PEER $client/,/^# END_PEER $client/p" /etc/wireguard/wg0.conf)
echo
qrencode -t ANSI256UTF8 < "$script_dir"/"$client.conf"
echo -e '\xE2\x86\x91 That is a QR code containing your client configuration.'
echo
echo "$client added. Configuration available in:" "$script_dir"/"$client.conf"
exit
;;
2)
# This option could be documented a bit better and maybe even be simplified
# ...but what can I say, I want some sleep too
number_of_clients=$(grep -c '^# BEGIN_PEER' /etc/wireguard/wg0.conf)
if [[ "$number_of_clients" = 0 ]]; then
echo
echo "There are no existing clients!"
exit
fi
echo
echo "Select the client to remove:"
grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | nl -s ') '
read -p "Client: " client_number
until [[ "$client_number" =~ ^[0-9]+$ && "$client_number" -le "$number_of_clients" ]]; do
echo "$client_number: invalid selection."
read -p "Client: " client_number
done
client=$(grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | sed -n "$client_number"p)
echo
read -p "Confirm $client removal? [y/N]: " remove
until [[ "$remove" =~ ^[yYnN]*$ ]]; do
echo "$remove: invalid selection."
read -p "Confirm $client removal? [y/N]: " remove
done
if [[ "$remove" =~ ^[yY]$ ]]; then
# The following is the right way to avoid disrupting other active connections:
# Remove from the live interface
wg set wg0 peer "$(sed -n "/^# BEGIN_PEER $client$/,\$p" /etc/wireguard/wg0.conf | grep -m 1 PublicKey | cut -d " " -f 3)" remove
# Remove from the configuration file
sed -i "/^# BEGIN_PEER $client$/,/^# END_PEER $client$/d" /etc/wireguard/wg0.conf
echo
echo "$client removed!"
else
echo
echo "$client removal aborted!"
fi
exit
;;
3)
echo
read -p "Confirm WireGuard removal? [y/N]: " remove
until [[ "$remove" =~ ^[yYnN]*$ ]]; do
echo "$remove: invalid selection."
read -p "Confirm WireGuard removal? [y/N]: " remove
done
if [[ "$remove" =~ ^[yY]$ ]]; then
port=$(grep '^ListenPort' /etc/wireguard/wg0.conf | cut -d " " -f 3)
if systemctl is-active --quiet firewalld.service; then
ip=$(firewall-cmd --direct --get-rules ipv4 nat POSTROUTING | grep '\-s 10.7.0.0/24 '"'"'!'"'"' -d 10.7.0.0/24' | grep -oE '[^ ]+$')
# Using both permanent and not permanent rules to avoid a firewalld reload.
firewall-cmd --remove-port="$port"/udp
firewall-cmd --zone=trusted --remove-source=10.7.0.0/24
firewall-cmd --permanent --remove-port="$port"/udp
firewall-cmd --permanent --zone=trusted --remove-source=10.7.0.0/24
firewall-cmd --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to "$ip"
if grep -qs 'fddd:2c4:2c4:2c4::1/64' /etc/wireguard/wg0.conf; then
ip6=$(firewall-cmd --direct --get-rules ipv6 nat POSTROUTING | grep '\-s fddd:2c4:2c4:2c4::/64 '"'"'!'"'"' -d fddd:2c4:2c4:2c4::/64' | grep -oE '[^ ]+$')
firewall-cmd --zone=trusted --remove-source=fddd:2c4:2c4:2c4::/64
firewall-cmd --permanent --zone=trusted --remove-source=fddd:2c4:2c4:2c4::/64
firewall-cmd --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
firewall-cmd --permanent --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
fi
else
systemctl disable --now wg-iptables.service
rm -f /etc/systemd/system/wg-iptables.service
fi
systemctl disable --now wg-quick@wg0.service
rm -f /etc/systemd/system/wg-quick@wg0.service.d/boringtun.conf
rm -f /etc/sysctl.d/99-wireguard-forward.conf
# Different stuff was installed depending on whether BoringTun was used or not
if [[ "$use_boringtun" -eq 0 ]]; then
if [[ "$os" == "ubuntu" ]]; then
# Ubuntu
rm -rf /etc/wireguard/
apt-get remove --purge -y wireguard wireguard-tools
elif [[ "$os" == "debian" ]]; then
# Debian
rm -rf /etc/wireguard/
apt-get remove --purge -y wireguard wireguard-tools
elif [[ "$os" == "centos" ]]; then
# CentOS
dnf remove -y wireguard-tools
rm -rf /etc/wireguard/
elif [[ "$os" == "fedora" ]]; then
# Fedora
dnf remove -y wireguard-tools
rm -rf /etc/wireguard/
fi
else
{ crontab -l 2>/dev/null | grep -v '/usr/local/sbin/boringtun-upgrade' ; } | crontab -
if [[ "$os" == "ubuntu" ]]; then
# Ubuntu
rm -rf /etc/wireguard/
apt-get remove --purge -y wireguard-tools
elif [[ "$os" == "debian" ]]; then
# Debian
rm -rf /etc/wireguard/
apt-get remove --purge -y wireguard-tools
elif [[ "$os" == "centos" ]]; then
# CentOS
dnf remove -y wireguard-tools
rm -rf /etc/wireguard/
elif [[ "$os" == "fedora" ]]; then
# Fedora
dnf remove -y wireguard-tools
rm -rf /etc/wireguard/
fi
rm -f /usr/local/sbin/boringtun /usr/local/sbin/boringtun-upgrade
fi
echo
echo "WireGuard removed!"
else
echo
echo "WireGuard removal aborted!"
fi
exit
;;
4)
exit
;;
esac
fi