mirror of
https://github.com/hwdsl2/wireguard-install.git
synced 2024-06-12 22:14:02 +02:00
948 lines
31 KiB
Bash
948 lines
31 KiB
Bash
#!/bin/bash
|
||
#
|
||
# https://github.com/hwdsl2/wireguard-install
|
||
#
|
||
# Based on the work of Nyr and contributors at:
|
||
# https://github.com/Nyr/wireguard-install
|
||
#
|
||
# Copyright (c) 2022 Lin Song <linsongui@gmail.com>
|
||
# Copyright (c) 2020-2022 Nyr
|
||
#
|
||
# Released under the MIT License, see the accompanying file LICENSE.txt
|
||
# or https://opensource.org/licenses/MIT
|
||
|
||
exiterr() { echo "Error: $1" >&2; exit 1; }
|
||
exiterr2() { exiterr "'apt-get install' failed."; }
|
||
exiterr3() { exiterr "'yum install' failed."; }
|
||
|
||
check_ip() {
|
||
IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
|
||
printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
|
||
}
|
||
|
||
check_os() {
|
||
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
|
||
exiterr "This installer seems to be running on an unsupported distribution.
|
||
Supported distros are Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS and Fedora."
|
||
fi
|
||
}
|
||
|
||
check_os_ver() {
|
||
if [[ "$os" == "ubuntu" && "$os_version" -lt 1804 ]]; then
|
||
exiterr "Ubuntu 18.04 or higher is required to use this installer.
|
||
This version of Ubuntu is too old and unsupported."
|
||
fi
|
||
|
||
if [[ "$os" == "debian" && "$os_version" -lt 10 ]]; then
|
||
exiterr "Debian 10 or higher is required to use this installer.
|
||
This version of Debian is too old and unsupported."
|
||
fi
|
||
|
||
if [[ "$os" == "centos" && "$os_version" -lt 7 ]]; then
|
||
exiterr "CentOS 7 or higher is required to use this installer.
|
||
This version of CentOS is too old and unsupported."
|
||
fi
|
||
}
|
||
|
||
check_nftables() {
|
||
if [ "$os" = "centos" ]; then
|
||
if grep -qs "hwdsl2 VPN script" /etc/sysconfig/nftables.conf \
|
||
|| systemctl is-active --quiet nftables 2>/dev/null; then
|
||
exiterr "This system has nftables enabled, which is not supported by this installer."
|
||
fi
|
||
fi
|
||
}
|
||
|
||
install_wget() {
|
||
# Detect some Debian minimal setups where neither wget nor curl are installed
|
||
if ! hash wget 2>/dev/null && ! hash curl 2>/dev/null; then
|
||
if [ "$auto" = 0 ]; then
|
||
echo "Wget is required to use this installer."
|
||
read -n1 -r -p "Press any key to install Wget and continue..."
|
||
fi
|
||
export DEBIAN_FRONTEND=noninteractive
|
||
(
|
||
set -x
|
||
apt-get -yqq update || apt-get -yqq update
|
||
apt-get -yqq install wget >/dev/null
|
||
) || exiterr2
|
||
fi
|
||
}
|
||
|
||
install_iproute() {
|
||
if ! hash ip 2>/dev/null; then
|
||
if [ "$auto" = 0 ]; then
|
||
echo "iproute is required to use this installer."
|
||
read -n1 -r -p "Press any key to install iproute and continue..."
|
||
fi
|
||
if [ "$os" = "debian" ] || [ "$os" = "ubuntu" ]; then
|
||
export DEBIAN_FRONTEND=noninteractive
|
||
(
|
||
set -x
|
||
apt-get -yqq update || apt-get -yqq update
|
||
apt-get -yqq install iproute2 >/dev/null
|
||
) || exiterr2
|
||
else
|
||
(
|
||
set -x
|
||
yum -y -q install iproute >/dev/null
|
||
) || exiterr3
|
||
fi
|
||
fi
|
||
}
|
||
|
||
show_start_setup() {
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo 'Welcome to this WireGuard server installer!'
|
||
echo 'GitHub: https://github.com/hwdsl2/wireguard-install'
|
||
echo
|
||
echo 'I need to ask you a few questions before starting setup.'
|
||
echo 'You can use the default options and just press enter if you are OK with them.'
|
||
else
|
||
show_header
|
||
echo
|
||
echo 'Starting WireGuard setup using default options.'
|
||
fi
|
||
}
|
||
|
||
find_public_ip() {
|
||
ip_url1="http://ipv4.icanhazip.com"
|
||
ip_url2="http://ip1.dynupdate.no-ip.com"
|
||
# Get public IP and sanitize with grep
|
||
get_public_ip=$(grep -m 1 -oE '^[0-9]{1,3}(\.[0-9]{1,3}){3}$' <<< "$(wget -T 10 -t 1 -4qO- "$ip_url1" || curl -m 10 -4Ls "$ip_url1")")
|
||
if ! check_ip "$get_public_ip"; then
|
||
get_public_ip=$(grep -m 1 -oE '^[0-9]{1,3}(\.[0-9]{1,3}){3}$' <<< "$(wget -T 10 -t 1 -4qO- "$ip_url2" || curl -m 10 -4Ls "$ip_url2")")
|
||
fi
|
||
}
|
||
|
||
detect_ip() {
|
||
# If system has a single IPv4, it is selected automatically.
|
||
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
|
||
# Use the IP address on the default route
|
||
ip=$(ip -4 route get 1 | sed 's/ uid .*//' | awk '{print $NF;exit}' 2>/dev/null)
|
||
if ! check_ip "$ip"; then
|
||
find_public_ip
|
||
ip_match=0
|
||
if [ -n "$get_public_ip" ]; then
|
||
ip_list=$(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}')
|
||
while IFS= read -r line; do
|
||
if [ "$line" = "$get_public_ip" ]; then
|
||
ip_match=1
|
||
ip="$line"
|
||
fi
|
||
done <<< "$ip_list"
|
||
fi
|
||
if [ "$ip_match" = 0 ]; then
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "Which IPv4 address should be used?"
|
||
number_of_ip=$(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}')
|
||
ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | nl -s ') '
|
||
read -rp "IPv4 address [1]: " ip_number
|
||
until [[ -z "$ip_number" || "$ip_number" =~ ^[0-9]+$ && "$ip_number" -le "$number_of_ip" ]]; do
|
||
echo "$ip_number: invalid selection."
|
||
read -rp "IPv4 address [1]: " ip_number
|
||
done
|
||
[[ -z "$ip_number" ]] && ip_number=1
|
||
else
|
||
ip_number=1
|
||
fi
|
||
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
|
||
fi
|
||
fi
|
||
if ! check_ip "$ip"; then
|
||
echo "Error: Could not detect this server's IP address." >&2
|
||
echo "Abort. No changes were made." >&2
|
||
exit 1
|
||
fi
|
||
}
|
||
|
||
check_nat_ip() {
|
||
# If $ip is a private IP address, the server must be behind NAT
|
||
if printf '%s' "$ip" | grep -qE '^(10|127|172\.(1[6-9]|2[0-9]|3[0-1])|192\.168|169\.254)\.'; then
|
||
find_public_ip
|
||
if ! check_ip "$get_public_ip"; then
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "This server is behind NAT. What is the public IPv4 address?"
|
||
read -rp "Public IPv4 address: " public_ip
|
||
until check_ip "$public_ip"; do
|
||
echo "Invalid input."
|
||
read -rp "Public IPv4 address: " public_ip
|
||
done
|
||
else
|
||
echo "Error: Could not detect this server's public IP." >&2
|
||
echo "Abort. No changes were made." >&2
|
||
exit 1
|
||
fi
|
||
else
|
||
public_ip="$get_public_ip"
|
||
fi
|
||
fi
|
||
}
|
||
|
||
show_config() {
|
||
if [ "$auto" != 0 ]; then
|
||
echo
|
||
printf '%s' "Server IP: "
|
||
[ -n "$public_ip" ] && printf '%s\n' "$public_ip" || printf '%s\n' "$ip"
|
||
echo "Port: UDP/51820"
|
||
echo "Client name: client"
|
||
echo "Client DNS: Google Public DNS"
|
||
fi
|
||
}
|
||
|
||
detect_ipv6() {
|
||
# 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 [[ $(ip -6 addr | grep -c 'inet6 [23]') -gt 1 ]]; then
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "Which IPv6 address should be used?"
|
||
number_of_ip6=$(ip -6 addr | grep -c 'inet6 [23]')
|
||
ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}' | nl -s ') '
|
||
read -rp "IPv6 address [1]: " ip6_number
|
||
until [[ -z "$ip6_number" || "$ip6_number" =~ ^[0-9]+$ && "$ip6_number" -le "$number_of_ip6" ]]; do
|
||
echo "$ip6_number: invalid selection."
|
||
read -rp "IPv6 address [1]: " ip6_number
|
||
done
|
||
[[ -z "$ip6_number" ]] && ip6_number=1
|
||
else
|
||
ip6_number=1
|
||
fi
|
||
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
|
||
}
|
||
|
||
select_port() {
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "What port should WireGuard listen to?"
|
||
read -rp "Port [51820]: " port
|
||
until [[ -z "$port" || "$port" =~ ^[0-9]+$ && "$port" -le 65535 ]]; do
|
||
echo "$port: invalid port."
|
||
read -rp "Port [51820]: " port
|
||
done
|
||
[[ -z "$port" ]] && port=51820
|
||
else
|
||
port=51820
|
||
fi
|
||
}
|
||
|
||
enter_custom_dns() {
|
||
read -rp "Enter primary DNS server: " dns1
|
||
until check_ip "$dns1"; do
|
||
echo "Invalid DNS server."
|
||
read -rp "Enter primary DNS server: " dns1
|
||
done
|
||
read -rp "Enter secondary DNS server (Enter to skip): " dns2
|
||
until [ -z "$dns2" ] || check_ip "$dns2"; do
|
||
echo "Invalid DNS server."
|
||
read -rp "Enter secondary DNS server (Enter to skip): " dns2
|
||
done
|
||
}
|
||
|
||
set_client_name() {
|
||
# Allow a limited set of characters to avoid conflicts
|
||
client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client")
|
||
}
|
||
|
||
enter_client_name() {
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "Enter a name for the first client:"
|
||
read -rp "Name [client]: " unsanitized_client
|
||
set_client_name
|
||
[[ -z "$client" ]] && client=client
|
||
else
|
||
client=client
|
||
fi
|
||
}
|
||
|
||
check_firewall() {
|
||
# 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
|
||
echo "Note: firewalld, which is required to manage routing tables, will also be installed."
|
||
elif [[ "$os" == "debian" || "$os" == "ubuntu" ]]; then
|
||
firewall="iptables"
|
||
fi
|
||
fi
|
||
}
|
||
|
||
abort_and_exit() {
|
||
echo "Abort. No changes were made." >&2
|
||
exit 1
|
||
}
|
||
|
||
confirm_setup() {
|
||
if [ "$auto" = 0 ]; then
|
||
printf "Do you want to continue? [Y/n] "
|
||
read -r response
|
||
case $response in
|
||
[yY][eE][sS]|[yY]|'')
|
||
:
|
||
;;
|
||
*)
|
||
abort_and_exit
|
||
;;
|
||
esac
|
||
fi
|
||
}
|
||
|
||
new_client_dns() {
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "Select a DNS server for the client:"
|
||
echo " 1) Current system resolvers"
|
||
echo " 2) Google Public DNS"
|
||
echo " 3) Cloudflare DNS"
|
||
echo " 4) OpenDNS"
|
||
echo " 5) Quad9"
|
||
echo " 6) AdGuard DNS"
|
||
echo " 7) Custom"
|
||
read -rp "DNS server [2]: " dns
|
||
until [[ -z "$dns" || "$dns" =~ ^[1-7]$ ]]; do
|
||
echo "$dns: invalid selection."
|
||
read -rp "DNS server [2]: " dns
|
||
done
|
||
else
|
||
dns=2
|
||
fi
|
||
# DNS
|
||
case "$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="94.140.14.14, 94.140.15.15"
|
||
;;
|
||
7)
|
||
enter_custom_dns
|
||
if [ -n "$dns2" ]; then
|
||
dns="$dns1, $dns2"
|
||
else
|
||
dns="$dns1"
|
||
fi
|
||
;;
|
||
esac
|
||
}
|
||
|
||
get_export_dir() {
|
||
export_to_home_dir=0
|
||
export_dir=~/
|
||
if [ -n "$SUDO_USER" ] && getent group "$SUDO_USER" >/dev/null 2>&1; then
|
||
user_home_dir=$(getent passwd "$SUDO_USER" 2>/dev/null | cut -d: -f6)
|
||
if [ -d "$user_home_dir" ] && [ "$user_home_dir" != "/" ]; then
|
||
export_dir="$user_home_dir/"
|
||
export_to_home_dir=1
|
||
fi
|
||
fi
|
||
}
|
||
|
||
new_client_setup() {
|
||
get_export_dir
|
||
# Given a list of the assigned internal IPv4 addresses, obtain the lowest still
|
||
# available octet. Important to start looking at 2, because 1 is our gateway.
|
||
octet=2
|
||
while grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "$octet"; do
|
||
(( octet++ ))
|
||
done
|
||
# Don't break the WireGuard configuration in case the address space is full
|
||
if [[ "$octet" -eq 255 ]]; then
|
||
exiterr "253 clients are already configured. The WireGuard internal subnet is full!"
|
||
fi
|
||
key=$(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 $client
|
||
EOF
|
||
# Create client configuration
|
||
cat << EOF > "$export_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 [ "$export_to_home_dir" = 1 ]; then
|
||
chown "$SUDO_USER:$SUDO_USER" "$export_dir$client".conf
|
||
fi
|
||
chmod 600 "$export_dir$client".conf
|
||
}
|
||
|
||
update_sysctl() {
|
||
mkdir -p /etc/sysctl.d
|
||
conf_fwd="/etc/sysctl.d/99-wireguard-forward.conf"
|
||
conf_opt="/etc/sysctl.d/99-wireguard-optimize.conf"
|
||
# Enable net.ipv4.ip_forward for the system
|
||
echo 'net.ipv4.ip_forward=1' > "$conf_fwd"
|
||
if [[ -n "$ip6" ]]; then
|
||
# Enable net.ipv6.conf.all.forwarding for the system
|
||
echo "net.ipv6.conf.all.forwarding=1" >> "$conf_fwd"
|
||
fi
|
||
# Optimize sysctl settings such as TCP buffer sizes
|
||
base_url="https://github.com/hwdsl2/vpn-extras/releases/download/v1.0.0"
|
||
conf_url="$base_url/sysctl-wg-$os"
|
||
[ "$auto" != 0 ] && conf_url="${conf_url}-auto"
|
||
wget -t 3 -T 30 -q -O "$conf_opt" "$conf_url" 2>/dev/null \
|
||
|| curl -m 30 -fsL "$conf_url" -o "$conf_opt" 2>/dev/null \
|
||
|| { /bin/rm -f "$conf_opt"; touch "$conf_opt"; }
|
||
# Enable TCP BBR congestion control if kernel version >= 4.20
|
||
if modprobe -q tcp_bbr \
|
||
&& printf '%s\n%s' "4.20" "$(uname -r)" | sort -C -V; then
|
||
cat >> "$conf_opt" <<'EOF'
|
||
net.core.default_qdisc = fq
|
||
net.ipv4.tcp_congestion_control = bbr
|
||
EOF
|
||
fi
|
||
# Apply sysctl settings
|
||
sysctl -e -q -p "$conf_fwd"
|
||
sysctl -e -q -p "$conf_opt"
|
||
}
|
||
|
||
update_rclocal() {
|
||
ipt_cmd="systemctl restart wg-iptables.service"
|
||
if ! grep -qs "$ipt_cmd" /etc/rc.local; then
|
||
if [ ! -f /etc/rc.local ]; then
|
||
echo '#!/bin/sh' > /etc/rc.local
|
||
else
|
||
if [ "$os" = "ubuntu" ] || [ "$os" = "debian" ]; then
|
||
sed --follow-symlinks -i '/^exit 0/d' /etc/rc.local
|
||
fi
|
||
fi
|
||
cat >> /etc/rc.local <<EOF
|
||
|
||
$ipt_cmd
|
||
EOF
|
||
if [ "$os" = "ubuntu" ] || [ "$os" = "debian" ]; then
|
||
echo "exit 0" >> /etc/rc.local
|
||
fi
|
||
chmod +x /etc/rc.local
|
||
fi
|
||
}
|
||
|
||
show_header() {
|
||
cat <<'EOF'
|
||
|
||
WireGuard Script
|
||
https://github.com/hwdsl2/wireguard-install
|
||
EOF
|
||
}
|
||
|
||
show_header2() {
|
||
cat <<'EOF'
|
||
|
||
Copyright (c) 2022 Lin Song
|
||
Copyright (c) 2020-2022 Nyr
|
||
EOF
|
||
}
|
||
|
||
show_usage() {
|
||
if [ -n "$1" ]; then
|
||
echo "Error: $1" >&2
|
||
fi
|
||
show_header
|
||
show_header2
|
||
cat 1>&2 <<EOF
|
||
|
||
Usage: bash $0 [options]
|
||
|
||
Options:
|
||
--auto auto install WireGuard using default options
|
||
-h, --help show this help message and exit
|
||
|
||
To customize install options, run this script without arguments.
|
||
EOF
|
||
exit 1
|
||
}
|
||
|
||
wgsetup() {
|
||
|
||
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
|
||
|
||
if [ "$(id -u)" != 0 ]; then
|
||
exiterr "This installer must be run as root. Try 'sudo bash $0'"
|
||
fi
|
||
|
||
# Detect Debian users running the script with "sh" instead of bash
|
||
if readlink /proc/$$/exe | grep -q "dash"; then
|
||
exiterr 'This installer needs to be run with "bash", not "sh".'
|
||
fi
|
||
|
||
# Detect OpenVZ 6
|
||
if [[ $(uname -r | cut -d "." -f 1) -eq 2 ]]; then
|
||
exiterr "The system is running an old kernel, which is incompatible with this installer."
|
||
fi
|
||
|
||
check_os
|
||
check_os_ver
|
||
|
||
if systemd-detect-virt -cq 2>/dev/null; then
|
||
exiterr "This system is running inside a container, which is not supported by this installer."
|
||
fi
|
||
|
||
auto=0
|
||
if [[ ! -e /etc/wireguard/wg0.conf ]]; then
|
||
check_nftables
|
||
while [ "$#" -gt 0 ]; do
|
||
case $1 in
|
||
--auto)
|
||
auto=1
|
||
shift
|
||
;;
|
||
-h|--help)
|
||
show_usage
|
||
;;
|
||
*)
|
||
show_usage "Unknown parameter: $1"
|
||
;;
|
||
esac
|
||
done
|
||
install_wget
|
||
install_iproute
|
||
show_start_setup
|
||
detect_ip
|
||
check_nat_ip
|
||
show_config
|
||
detect_ipv6
|
||
select_port
|
||
enter_client_name
|
||
new_client_dns
|
||
if [ "$auto" = 0 ]; then
|
||
echo
|
||
echo "WireGuard installation is ready to begin."
|
||
fi
|
||
check_firewall
|
||
confirm_setup
|
||
echo
|
||
echo "Installing WireGuard, please wait..."
|
||
if [[ "$os" == "ubuntu" ]]; then
|
||
export DEBIAN_FRONTEND=noninteractive
|
||
(
|
||
set -x
|
||
apt-get -yqq update || apt-get -yqq update
|
||
apt-get -yqq install wireguard qrencode $firewall >/dev/null
|
||
) || exiterr2
|
||
elif [[ "$os" == "debian" && "$os_version" -ge 11 ]]; then
|
||
export DEBIAN_FRONTEND=noninteractive
|
||
(
|
||
set -x
|
||
apt-get -yqq update || apt-get -yqq update
|
||
apt-get -yqq install wireguard qrencode $firewall >/dev/null
|
||
) || exiterr2
|
||
elif [[ "$os" == "debian" && "$os_version" -eq 10 ]]; then
|
||
if ! grep -qs '^deb .* buster-backports main' /etc/apt/sources.list /etc/apt/sources.list.d/*.list; then
|
||
echo "deb http://deb.debian.org/debian buster-backports main" >> /etc/apt/sources.list
|
||
fi
|
||
export DEBIAN_FRONTEND=noninteractive
|
||
(
|
||
set -x
|
||
apt-get -yqq update || apt-get -yqq update
|
||
# Try to install kernel headers for the running kernel and avoid a reboot. This
|
||
# can fail, so it's important to run separately from the other apt-get command.
|
||
apt-get -yqq install linux-headers-"$(uname -r)" >/dev/null
|
||
)
|
||
# There are cleaner ways to find out the $architecture, but we require an
|
||
# specific format for the package name and this approach provides what we need.
|
||
architecture=$(dpkg --get-selections 'linux-image-*-*' | cut -f 1 | grep -oE '[^-]*$' -m 1)
|
||
# linux-headers-$architecture points to the latest headers. We install it
|
||
# because if the system has an outdated kernel, there is no guarantee that old
|
||
# headers were still downloadable and to provide suitable headers for future
|
||
# kernel updates.
|
||
(
|
||
set -x
|
||
apt-get -yqq install linux-headers-"$architecture" >/dev/null
|
||
apt-get -yqq install wireguard qrencode $firewall >/dev/null
|
||
) || exiterr2
|
||
elif [[ "$os" == "centos" && "$os_version" -eq 9 ]]; then
|
||
(
|
||
set -x
|
||
yum -y -q install epel-release >/dev/null
|
||
yum -y -q install wireguard-tools qrencode $firewall >/dev/null 2>&1
|
||
) || exiterr3
|
||
mkdir -p /etc/wireguard/
|
||
elif [[ "$os" == "centos" && "$os_version" -eq 8 ]]; then
|
||
(
|
||
set -x
|
||
yum -y -q install epel-release elrepo-release >/dev/null
|
||
yum -y -q --nobest install kmod-wireguard >/dev/null 2>&1
|
||
yum -y -q install wireguard-tools qrencode $firewall >/dev/null 2>&1
|
||
) || exiterr3
|
||
mkdir -p /etc/wireguard/
|
||
elif [[ "$os" == "centos" && "$os_version" -eq 7 ]]; then
|
||
(
|
||
set -x
|
||
yum -y -q install epel-release https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm >/dev/null
|
||
yum -y -q install yum-plugin-elrepo >/dev/null 2>&1
|
||
yum -y -q install kmod-wireguard wireguard-tools qrencode $firewall >/dev/null 2>&1
|
||
) || exiterr3
|
||
mkdir -p /etc/wireguard/
|
||
elif [[ "$os" == "fedora" ]]; then
|
||
(
|
||
set -x
|
||
dnf install -y wireguard-tools qrencode $firewall >/dev/null
|
||
) || exiterr "'dnf install' failed."
|
||
mkdir -p /etc/wireguard/
|
||
fi
|
||
# If firewalld was just installed, enable it
|
||
if [[ "$firewall" == "firewalld" ]]; then
|
||
(
|
||
set -x
|
||
systemctl enable --now firewalld.service >/dev/null 2>&1
|
||
)
|
||
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 = $port
|
||
|
||
EOF
|
||
chmod 600 /etc/wireguard/wg0.conf
|
||
update_sysctl
|
||
if systemctl is-active --quiet firewalld.service; then
|
||
# Using both permanent and not permanent rules to avoid a firewalld reload
|
||
firewall-cmd -q --add-port="$port"/udp
|
||
firewall-cmd -q --zone=trusted --add-source=10.7.0.0/24
|
||
firewall-cmd -q --permanent --add-port="$port"/udp
|
||
firewall-cmd -q --permanent --zone=trusted --add-source=10.7.0.0/24
|
||
# Set NAT for the VPN subnet
|
||
firewall-cmd -q --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to "$ip"
|
||
firewall-cmd -q --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 -q --zone=trusted --add-source=fddd:2c4:2c4:2c4::/64
|
||
firewall-cmd -q --permanent --zone=trusted --add-source=fddd:2c4:2c4:2c4::/64
|
||
firewall-cmd -q --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
|
||
firewall-cmd -q --permanent --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$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]
|
||
Before=network.target
|
||
[Service]
|
||
Type=oneshot
|
||
ExecStart=$iptables_path -t nat -A POSTROUTING -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to $ip
|
||
ExecStart=$iptables_path -I INPUT -p udp --dport $port -j ACCEPT
|
||
ExecStart=$iptables_path -I FORWARD -s 10.7.0.0/24 -j ACCEPT
|
||
ExecStart=$iptables_path -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
|
||
ExecStop=$iptables_path -t nat -D POSTROUTING -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to $ip
|
||
ExecStop=$iptables_path -D INPUT -p udp --dport $port -j ACCEPT
|
||
ExecStop=$iptables_path -D FORWARD -s 10.7.0.0/24 -j ACCEPT
|
||
ExecStop=$iptables_path -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" > /etc/systemd/system/wg-iptables.service
|
||
if [[ -n "$ip6" ]]; then
|
||
echo "ExecStart=$ip6tables_path -t nat -A POSTROUTING -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to $ip6
|
||
ExecStart=$ip6tables_path -I FORWARD -s fddd:2c4:2c4:2c4::/64 -j ACCEPT
|
||
ExecStart=$ip6tables_path -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
|
||
ExecStop=$ip6tables_path -t nat -D POSTROUTING -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to $ip6
|
||
ExecStop=$ip6tables_path -D FORWARD -s fddd:2c4:2c4:2c4::/64 -j ACCEPT
|
||
ExecStop=$ip6tables_path -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" >> /etc/systemd/system/wg-iptables.service
|
||
fi
|
||
echo "RemainAfterExit=yes
|
||
[Install]
|
||
WantedBy=multi-user.target" >> /etc/systemd/system/wg-iptables.service
|
||
(
|
||
set -x
|
||
systemctl enable --now wg-iptables.service >/dev/null 2>&1
|
||
)
|
||
fi
|
||
update_rclocal
|
||
# Generates the custom client.conf
|
||
new_client_setup
|
||
# Enable and start the wg-quick service
|
||
(
|
||
set -x
|
||
systemctl enable --now wg-quick@wg0.service >/dev/null 2>&1
|
||
)
|
||
echo
|
||
qrencode -t UTF8 < "$export_dir$client".conf
|
||
echo -e '\xE2\x86\x91 That is a QR code containing the client configuration.'
|
||
echo
|
||
# If the kernel module didn't load, system probably had an outdated kernel
|
||
# We'll try to help, but will not force a kernel upgrade upon the user
|
||
if ! modprobe -nq wireguard; then
|
||
echo "Warning!"
|
||
echo "Installation was finished, but the WireGuard kernel module could not load."
|
||
if [[ "$os" == "ubuntu" && "$os_version" -eq 1804 ]]; then
|
||
echo 'Upgrade the kernel and headers with "apt-get install linux-generic" and restart.'
|
||
elif [[ "$os" == "debian" && "$os_version" -eq 10 ]]; then
|
||
echo "Upgrade the kernel with \"apt-get install linux-image-$architecture\" and restart."
|
||
elif [[ "$os" == "centos" && "$os_version" -le 8 ]]; then
|
||
echo "Reboot the system to load the most recent kernel."
|
||
fi
|
||
else
|
||
echo "Finished!"
|
||
fi
|
||
echo
|
||
echo "The client configuration is available in: $export_dir$client.conf"
|
||
echo "New clients can be added by running this script again."
|
||
else
|
||
show_header
|
||
echo
|
||
echo "WireGuard is already installed."
|
||
echo
|
||
echo "Select an option:"
|
||
echo " 1) Add a new client"
|
||
echo " 2) List existing clients"
|
||
echo " 3) Remove an existing client"
|
||
echo " 4) Remove WireGuard"
|
||
echo " 5) Exit"
|
||
read -rp "Option: " option
|
||
until [[ "$option" =~ ^[1-5]$ ]]; do
|
||
echo "$option: invalid selection."
|
||
read -rp "Option: " option
|
||
done
|
||
case "$option" in
|
||
1)
|
||
echo
|
||
echo "Provide a name for the client:"
|
||
read -rp "Name: " unsanitized_client
|
||
[ -z "$unsanitized_client" ] && abort_and_exit
|
||
set_client_name
|
||
while [[ -z "$client" ]] || grep -q "^# BEGIN_PEER $client$" /etc/wireguard/wg0.conf; do
|
||
echo "$client: invalid name."
|
||
read -rp "Name: " unsanitized_client
|
||
[ -z "$unsanitized_client" ] && abort_and_exit
|
||
set_client_name
|
||
done
|
||
new_client_dns
|
||
new_client_setup
|
||
# Append new client configuration to the WireGuard interface
|
||
wg addconf wg0 <(sed -n "/^# BEGIN_PEER $client/,/^# END_PEER $client/p" /etc/wireguard/wg0.conf)
|
||
echo
|
||
qrencode -t UTF8 < "$export_dir$client".conf
|
||
echo -e '\xE2\x86\x91 That is a QR code containing the client configuration.'
|
||
echo
|
||
echo "$client added. Configuration available in: $export_dir$client.conf"
|
||
exit
|
||
;;
|
||
2)
|
||
echo
|
||
echo "Checking for existing client(s)..."
|
||
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
|
||
grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | nl -s ') '
|
||
if [ "$number_of_clients" = 1 ]; then
|
||
printf '\n%s\n' "Total: 1 client"
|
||
elif [ -n "$number_of_clients" ]; then
|
||
printf '\n%s\n' "Total: $number_of_clients clients"
|
||
fi
|
||
;;
|
||
3)
|
||
number_of_clients=$(grep -c '^# BEGIN_PEER' /etc/wireguard/wg0.conf)
|
||
if [[ "$number_of_clients" = 0 ]]; then
|
||
echo
|
||
echo "There are no existing clients!"
|
||
exit
|
||
fi
|
||
echo
|
||
echo "Select the client to remove:"
|
||
grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | nl -s ') '
|
||
read -rp "Client: " client_number
|
||
[ -z "$client_number" ] && abort_and_exit
|
||
until [[ "$client_number" =~ ^[0-9]+$ && "$client_number" -le "$number_of_clients" ]]; do
|
||
echo "$client_number: invalid selection."
|
||
read -rp "Client: " client_number
|
||
[ -z "$client_number" ] && abort_and_exit
|
||
done
|
||
client=$(grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | sed -n "$client_number"p)
|
||
echo
|
||
read -rp "Confirm $client removal? [y/N]: " remove
|
||
until [[ "$remove" =~ ^[yYnN]*$ ]]; do
|
||
echo "$remove: invalid selection."
|
||
read -rp "Confirm $client removal? [y/N]: " remove
|
||
done
|
||
if [[ "$remove" =~ ^[yY]$ ]]; then
|
||
echo
|
||
echo "Removing $client..."
|
||
# The following is the right way to avoid disrupting other active connections:
|
||
# Remove from the live interface
|
||
wg set wg0 peer "$(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
|
||
get_export_dir
|
||
wg_file="$export_dir$client.conf"
|
||
if [ -f "$wg_file" ]; then
|
||
echo "Removing $wg_file..."
|
||
rm -f "$wg_file"
|
||
fi
|
||
echo
|
||
echo "$client removed!"
|
||
else
|
||
echo
|
||
echo "$client removal aborted!"
|
||
fi
|
||
exit
|
||
;;
|
||
4)
|
||
echo
|
||
read -rp "Confirm WireGuard removal? [y/N]: " remove
|
||
until [[ "$remove" =~ ^[yYnN]*$ ]]; do
|
||
echo "$remove: invalid selection."
|
||
read -rp "Confirm WireGuard removal? [y/N]: " remove
|
||
done
|
||
if [[ "$remove" =~ ^[yY]$ ]]; then
|
||
echo
|
||
echo "Removing WireGuard, please wait..."
|
||
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 '[^ ]+$')
|
||
# Using both permanent and not permanent rules to avoid a firewalld reload.
|
||
firewall-cmd -q --remove-port="$port"/udp
|
||
firewall-cmd -q --zone=trusted --remove-source=10.7.0.0/24
|
||
firewall-cmd -q --permanent --remove-port="$port"/udp
|
||
firewall-cmd -q --permanent --zone=trusted --remove-source=10.7.0.0/24
|
||
firewall-cmd -q --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j SNAT --to "$ip"
|
||
firewall-cmd -q --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 '[^ ]+$')
|
||
firewall-cmd -q --zone=trusted --remove-source=fddd:2c4:2c4:2c4::/64
|
||
firewall-cmd -q --permanent --zone=trusted --remove-source=fddd:2c4:2c4:2c4::/64
|
||
firewall-cmd -q --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
|
||
firewall-cmd -q --permanent --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j SNAT --to "$ip6"
|
||
fi
|
||
else
|
||
systemctl disable --now wg-iptables.service
|
||
rm -f /etc/systemd/system/wg-iptables.service
|
||
fi
|
||
systemctl disable --now wg-quick@wg0.service
|
||
rm -f /etc/sysctl.d/99-wireguard-forward.conf /etc/sysctl.d/99-wireguard-optimize.conf
|
||
if [ ! -f /usr/sbin/openvpn ] && [ ! -f /usr/sbin/ipsec ] \
|
||
&& [ ! -f /usr/local/sbin/ipsec ]; then
|
||
echo 0 > /proc/sys/net/ipv4/ip_forward
|
||
echo 0 > /proc/sys/net/ipv6/conf/all/forwarding
|
||
fi
|
||
ipt_cmd="systemctl restart wg-iptables.service"
|
||
if grep -qs "$ipt_cmd" /etc/rc.local; then
|
||
sed --follow-symlinks -i "/^$ipt_cmd/d" /etc/rc.local
|
||
fi
|
||
if [[ "$os" == "ubuntu" ]]; then
|
||
(
|
||
set -x
|
||
rm -rf /etc/wireguard/
|
||
apt-get remove --purge -y wireguard wireguard-tools >/dev/null
|
||
)
|
||
elif [[ "$os" == "debian" && "$os_version" -ge 11 ]]; then
|
||
(
|
||
set -x
|
||
rm -rf /etc/wireguard/
|
||
apt-get remove --purge -y wireguard wireguard-tools >/dev/null
|
||
)
|
||
elif [[ "$os" == "debian" && "$os_version" -eq 10 ]]; then
|
||
(
|
||
set -x
|
||
rm -rf /etc/wireguard/
|
||
apt-get remove --purge -y wireguard wireguard-dkms wireguard-tools >/dev/null
|
||
)
|
||
elif [[ "$os" == "centos" && "$os_version" -eq 9 ]]; then
|
||
(
|
||
set -x
|
||
yum -y -q remove wireguard-tools >/dev/null
|
||
rm -rf /etc/wireguard/
|
||
)
|
||
elif [[ "$os" == "centos" && "$os_version" -le 8 ]]; then
|
||
(
|
||
set -x
|
||
yum -y -q remove kmod-wireguard wireguard-tools >/dev/null
|
||
rm -rf /etc/wireguard/
|
||
)
|
||
elif [[ "$os" == "fedora" ]]; then
|
||
(
|
||
set -x
|
||
dnf remove -y wireguard-tools >/dev/null
|
||
rm -rf /etc/wireguard/
|
||
)
|
||
fi
|
||
echo
|
||
echo "WireGuard removed!"
|
||
else
|
||
echo
|
||
echo "WireGuard removal aborted!"
|
||
fi
|
||
exit
|
||
;;
|
||
5)
|
||
exit
|
||
;;
|
||
esac
|
||
fi
|
||
}
|
||
|
||
## Defer setup until we have the complete script
|
||
wgsetup "$@"
|
||
|
||
exit 0
|