1064 lines
34 KiB
Bash
1064 lines
34 KiB
Bash
#!/bin/bash
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#
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# https://github.com/hwdsl2/wireguard-install
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#
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# Based on the work of Nyr and contributors at:
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# https://github.com/Nyr/wireguard-install
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#
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# Copyright (c) 2022-2024 Lin Song <linsongui@gmail.com>
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# Copyright (c) 2020-2023 Nyr
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#
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# Released under the MIT License, see the accompanying file LICENSE.txt
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# or https://opensource.org/licenses/MIT
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exiterr() { echo "Error: $1" >&2; exit 1; }
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exiterr2() { exiterr "'apt-get install' failed."; }
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exiterr3() { exiterr "'yum install' failed."; }
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exiterr4() { exiterr "'zypper install' failed."; }
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check_ip() {
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IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
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printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
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}
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check_os() {
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if grep -qs "ubuntu" /etc/os-release; then
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os="ubuntu"
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os_version=$(grep 'VERSION_ID' /etc/os-release | cut -d '"' -f 2 | tr -d '.')
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elif [[ -e /etc/debian_version ]]; then
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os="debian"
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os_version=$(grep -oE '[0-9]+' /etc/debian_version | head -1)
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elif [[ -e /etc/almalinux-release || -e /etc/rocky-release || -e /etc/centos-release ]]; then
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os="centos"
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os_version=$(grep -shoE '[0-9]+' /etc/almalinux-release /etc/rocky-release /etc/centos-release | head -1)
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elif [[ -e /etc/fedora-release ]]; then
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os="fedora"
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os_version=$(grep -oE '[0-9]+' /etc/fedora-release | head -1)
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elif [[ -e /etc/SUSE-brand && "$(head -1 /etc/SUSE-brand)" == "openSUSE" ]]; then
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os="openSUSE"
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os_version=$(tail -1 /etc/SUSE-brand | grep -oE '[0-9\\.]+')
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else
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exiterr "This installer seems to be running on an unsupported distribution.
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Supported distros are Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS, Fedora and openSUSE."
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fi
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}
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check_os_ver() {
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if [[ "$os" == "ubuntu" && "$os_version" -lt 1804 ]]; then
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exiterr "Ubuntu 18.04 or higher is required to use this installer.
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This version of Ubuntu is too old and unsupported."
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fi
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if [[ "$os" == "debian" && "$os_version" -lt 10 ]]; then
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exiterr "Debian 10 or higher is required to use this installer.
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This version of Debian is too old and unsupported."
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fi
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if [[ "$os" == "centos" && "$os_version" -lt 7 ]]; then
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exiterr "CentOS 7 or higher is required to use this installer.
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This version of CentOS is too old and unsupported."
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fi
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}
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check_nftables() {
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if [ "$os" = "centos" ]; then
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if grep -qs "hwdsl2 VPN script" /etc/sysconfig/nftables.conf \
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|| systemctl is-active --quiet nftables 2>/dev/null; then
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exiterr "This system has nftables enabled, which is not supported by this installer."
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fi
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fi
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}
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check_dns_name() {
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FQDN_REGEX='^([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$'
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printf '%s' "$1" | tr -d '\n' | grep -Eq "$FQDN_REGEX"
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}
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install_wget() {
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# Detect some Debian minimal setups where neither wget nor curl are installed
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if ! hash wget 2>/dev/null && ! hash curl 2>/dev/null; then
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if [ "$auto" = 0 ]; then
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echo "Wget is required to use this installer."
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read -n1 -r -p "Press any key to install Wget and continue..."
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fi
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export DEBIAN_FRONTEND=noninteractive
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(
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set -x
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apt-get -yqq update || apt-get -yqq update
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apt-get -yqq install wget >/dev/null
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) || exiterr2
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fi
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}
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install_iproute() {
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if ! hash ip 2>/dev/null; then
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if [ "$auto" = 0 ]; then
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echo "iproute is required to use this installer."
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read -n1 -r -p "Press any key to install iproute and continue..."
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fi
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if [ "$os" = "debian" ] || [ "$os" = "ubuntu" ]; then
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export DEBIAN_FRONTEND=noninteractive
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(
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set -x
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apt-get -yqq update || apt-get -yqq update
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apt-get -yqq install iproute2 >/dev/null
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) || exiterr2
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elif [ "$os" = "openSUSE" ]; then
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(
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set -x
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zypper install iproute2 >/dev/null
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) || exiterr4
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else
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(
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set -x
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yum -y -q install iproute >/dev/null
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) || exiterr3
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fi
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fi
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}
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show_start_setup() {
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if [ "$auto" = 0 ]; then
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echo
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echo 'Welcome to this WireGuard server installer!'
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echo 'GitHub: https://github.com/hwdsl2/wireguard-install'
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echo
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echo 'I need to ask you a few questions before starting setup.'
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echo 'You can use the default options and just press enter if you are OK with them.'
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else
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show_header
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echo
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echo 'Starting WireGuard setup using default options.'
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fi
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}
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enter_server_address() {
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echo
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echo "Do you want WireGuard VPN clients to connect to this server using a DNS name,"
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printf "e.g. vpn.example.com, instead of its IP address? [y/N] "
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read -r response
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case $response in
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[yY][eE][sS]|[yY])
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use_dns_name=1
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echo
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;;
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*)
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use_dns_name=0
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;;
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esac
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if [ "$use_dns_name" = 1 ]; then
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read -rp "Enter the DNS name of this VPN server: " server_addr
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until check_dns_name "$server_addr"; do
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echo "Invalid DNS name. You must enter a fully qualified domain name (FQDN)."
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read -rp "Enter the DNS name of this VPN server: " server_addr
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done
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ip="$server_addr"
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echo
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echo "Note: Make sure this DNS name resolves to the IPv4 address of this server."
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else
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detect_ip
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check_nat_ip
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fi
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}
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find_public_ip() {
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ip_url1="http://ipv4.icanhazip.com"
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ip_url2="http://ip1.dynupdate.no-ip.com"
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# Get public IP and sanitize with grep
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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 "$ip_url1")")
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if ! check_ip "$get_public_ip"; then
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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")")
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fi
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}
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detect_ip() {
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# If system has a single IPv4, it is selected automatically.
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if [[ $(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}') -eq 1 ]]; then
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ip=$(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}')
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else
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# Use the IP address on the default route
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ip=$(ip -4 route get 1 | sed 's/ uid .*//' | awk '{print $NF;exit}' 2>/dev/null)
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if ! check_ip "$ip"; then
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find_public_ip
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ip_match=0
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if [ -n "$get_public_ip" ]; then
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ip_list=$(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}')
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while IFS= read -r line; do
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if [ "$line" = "$get_public_ip" ]; then
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ip_match=1
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ip="$line"
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fi
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done <<< "$ip_list"
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fi
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if [ "$ip_match" = 0 ]; then
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if [ "$auto" = 0 ]; then
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echo
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echo "Which IPv4 address should be used?"
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num_of_ip=$(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}')
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ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | nl -s ') '
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read -rp "IPv4 address [1]: " ip_num
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until [[ -z "$ip_num" || "$ip_num" =~ ^[0-9]+$ && "$ip_num" -le "$num_of_ip" ]]; do
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echo "$ip_num: invalid selection."
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read -rp "IPv4 address [1]: " ip_num
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done
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[[ -z "$ip_num" ]] && ip_num=1
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else
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ip_num=1
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fi
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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_num"p)
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fi
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fi
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fi
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if ! check_ip "$ip"; then
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echo "Error: Could not detect this server's IP address." >&2
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echo "Abort. No changes were made." >&2
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exit 1
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fi
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}
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check_nat_ip() {
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# If $ip is a private IP address, the server must be behind NAT
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if printf '%s' "$ip" | grep -qE '^(10|127|172\.(1[6-9]|2[0-9]|3[0-1])|192\.168|169\.254)\.'; then
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find_public_ip
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if ! check_ip "$get_public_ip"; then
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if [ "$auto" = 0 ]; then
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echo
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echo "This server is behind NAT. What is the public IPv4 address?"
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read -rp "Public IPv4 address: " public_ip
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until check_ip "$public_ip"; do
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echo "Invalid input."
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read -rp "Public IPv4 address: " public_ip
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done
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else
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echo "Error: Could not detect this server's public IP." >&2
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echo "Abort. No changes were made." >&2
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exit 1
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fi
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else
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public_ip="$get_public_ip"
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fi
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fi
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}
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show_config() {
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if [ "$auto" != 0 ]; then
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echo
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printf '%s' "Server IP: "
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[ -n "$public_ip" ] && printf '%s\n' "$public_ip" || printf '%s\n' "$ip"
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echo "Port: UDP/51820"
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echo "Client name: client"
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echo "Client DNS: Google Public DNS"
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fi
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}
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detect_ipv6() {
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ip6=""
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if [[ $(ip -6 addr | grep -c 'inet6 [23]') -ne 0 ]]; then
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ip6=$(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 1p)
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fi
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}
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select_port() {
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if [ "$auto" = 0 ]; then
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echo
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echo "Which port should WireGuard listen to?"
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read -rp "Port [51820]: " port
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until [[ -z "$port" || "$port" =~ ^[0-9]+$ && "$port" -le 65535 ]]; do
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echo "$port: invalid port."
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read -rp "Port [51820]: " port
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done
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[[ -z "$port" ]] && port=51820
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else
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port=51820
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fi
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}
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enter_custom_dns() {
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read -rp "Enter primary DNS server: " dns1
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until check_ip "$dns1"; do
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echo "Invalid DNS server."
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read -rp "Enter primary DNS server: " dns1
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done
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read -rp "Enter secondary DNS server (Enter to skip): " dns2
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until [ -z "$dns2" ] || check_ip "$dns2"; do
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echo "Invalid DNS server."
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read -rp "Enter secondary DNS server (Enter to skip): " dns2
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done
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}
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set_client_name() {
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# Allow a limited set of characters to avoid conflicts
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# Limit to 15 characters for compatibility with Linux clients
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client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client" | cut -c-15)
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}
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enter_client_name() {
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if [ "$auto" = 0 ]; then
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echo
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echo "Enter a name for the first client:"
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read -rp "Name [client]: " unsanitized_client
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set_client_name
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[[ -z "$client" ]] && client=client
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else
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client=client
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fi
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}
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check_firewall() {
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# Install a firewall if firewalld or iptables are not already available
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if ! systemctl is-active --quiet firewalld.service && ! hash iptables 2>/dev/null; then
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if [[ "$os" == "centos" || "$os" == "fedora" ]]; then
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firewall="firewalld"
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elif [[ "$os" == "openSUSE" ]]; then
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firewall="firewalld"
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elif [[ "$os" == "debian" || "$os" == "ubuntu" ]]; then
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firewall="iptables"
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fi
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if [[ "$firewall" == "firewalld" ]]; then
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# We don't want to silently enable firewalld, so we give a subtle warning
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# If the user continues, firewalld will be installed and enabled during setup
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echo
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echo "Note: firewalld, which is required to manage routing tables, will also be installed."
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fi
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fi
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}
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abort_and_exit() {
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echo "Abort. No changes were made." >&2
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exit 1
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}
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confirm_setup() {
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if [ "$auto" = 0 ]; then
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printf "Do you want to continue? [Y/n] "
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read -r response
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case $response in
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[yY][eE][sS]|[yY]|'')
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:
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;;
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*)
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abort_and_exit
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;;
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esac
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fi
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}
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new_client_dns() {
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if [ "$auto" = 0 ]; then
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echo
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echo "Select a DNS server for the client:"
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echo " 1) Current system resolvers"
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echo " 2) Google Public DNS"
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echo " 3) Cloudflare DNS"
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echo " 4) OpenDNS"
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echo " 5) Quad9"
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echo " 6) AdGuard DNS"
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echo " 7) Custom"
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read -rp "DNS server [2]: " dns
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until [[ -z "$dns" || "$dns" =~ ^[1-7]$ ]]; do
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echo "$dns: invalid selection."
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read -rp "DNS server [2]: " dns
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done
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else
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dns=2
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fi
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# DNS
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case "$dns" in
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1)
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# Locate the proper resolv.conf
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# Needed for systems running systemd-resolved
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if grep '^nameserver' "/etc/resolv.conf" | grep -qv '127.0.0.53' ; then
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resolv_conf="/etc/resolv.conf"
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else
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resolv_conf="/run/systemd/resolve/resolv.conf"
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fi
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# Extract nameservers and provide them in the required format
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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')
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;;
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2|"")
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dns="8.8.8.8, 8.8.4.4"
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;;
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3)
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dns="1.1.1.1, 1.0.0.1"
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;;
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4)
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dns="208.67.222.222, 208.67.220.220"
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;;
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5)
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dns="9.9.9.9, 149.112.112.112"
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;;
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6)
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dns="94.140.14.14, 94.140.15.15"
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;;
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7)
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enter_custom_dns
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if [ -n "$dns2" ]; then
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dns="$dns1, $dns2"
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else
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dns="$dns1"
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fi
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;;
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esac
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}
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get_export_dir() {
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export_to_home_dir=0
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export_dir=~/
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if [ -n "$SUDO_USER" ] && getent group "$SUDO_USER" >/dev/null 2>&1; then
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user_home_dir=$(getent passwd "$SUDO_USER" 2>/dev/null | cut -d: -f6)
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if [ -d "$user_home_dir" ] && [ "$user_home_dir" != "/" ]; then
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export_dir="$user_home_dir/"
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export_to_home_dir=1
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fi
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fi
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}
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select_client_ip() {
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# Given a list of the assigned internal IPv4 addresses, obtain the lowest still
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# available octet. Important to start looking at 2, because 1 is our gateway.
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octet=2
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while grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "$octet"; do
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(( octet++ ))
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done
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# Don't break the WireGuard configuration in case the address space is full
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if [[ "$octet" -eq 255 ]]; then
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exiterr "253 clients are already configured. The WireGuard internal subnet is full!"
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fi
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}
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new_client_setup() {
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select_client_ip
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specify_ip=n
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if [ "$1" = "add_client" ]; then
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echo
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read -rp "Do you want to specify an internal IP address for the new client? [y/N]: " specify_ip
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until [[ "$specify_ip" =~ ^[yYnN]*$ ]]; do
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echo "$specify_ip: invalid selection."
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read -rp "Do you want to specify an internal IP address for the new client? [y/N]: " specify_ip
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done
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if [[ ! "$specify_ip" =~ ^[yY]$ ]]; then
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echo "Using auto assigned IP address 10.7.0.$octet."
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fi
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fi
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if [[ "$specify_ip" =~ ^[yY]$ ]]; then
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echo
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read -rp "Enter IP address for the new client (e.g. 10.7.0.X): " client_ip
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octet=$(printf '%s' "$client_ip" | cut -d "." -f 4)
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until [[ $client_ip =~ ^10\.7\.0\.([2-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-4])$ ]] \
|
|
&& ! grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "$octet"; do
|
|
if [[ ! $client_ip =~ ^10\.7\.0\.([2-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-4])$ ]]; then
|
|
echo "Invalid IP address. Must be within the range 10.7.0.2 to 10.7.0.254."
|
|
else
|
|
echo "The IP address is already in use. Please choose another one."
|
|
fi
|
|
read -rp "Enter IP address for the new client (e.g. 10.7.0.X): " client_ip
|
|
octet=$(printf '%s' "$client_ip" | cut -d "." -f 4)
|
|
done
|
|
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 $client
|
|
EOF
|
|
# Create client configuration
|
|
get_export_dir
|
|
cat << EOF > "$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" "$(uname -r)" | sort -C -V \
|
|
&& [ -f /proc/sys/net/ipv4/tcp_congestion_control ]; then
|
|
cat >> "$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) 2022-2024 Lin Song
|
|
Copyright (c) 2020-2023 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: $1"
|
|
;;
|
|
esac
|
|
done
|
|
install_wget
|
|
install_iproute
|
|
show_start_setup
|
|
public_ip=""
|
|
if [ "$auto" = 0 ]; then
|
|
enter_server_address
|
|
else
|
|
detect_ip
|
|
check_nat_ip
|
|
fi
|
|
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 $firewall >/dev/null
|
|
) || exiterr "'dnf install' failed."
|
|
mkdir -p /etc/wireguard/
|
|
elif [[ "$os" == "openSUSE" ]]; then
|
|
(
|
|
set -x
|
|
zypper install -y wireguard-tools qrencode $firewall >/dev/null
|
|
) || exiterr4
|
|
mkdir -p /etc/wireguard/
|
|
fi
|
|
[ ! -d /etc/wireguard ] && exiterr2
|
|
# If firewalld was just installed, enable it
|
|
if [[ "$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="$port"/udp
|
|
firewall-cmd -q --permanent --zone=trusted --add-source=10.7.0.0/24
|
|
# Set NAT for the VPN subnet
|
|
firewall-cmd -q --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j MASQUERADE
|
|
firewall-cmd -q --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j MASQUERADE
|
|
if [[ -n "$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 MASQUERADE
|
|
firewall-cmd -q --permanent --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j MASQUERADE
|
|
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=$iptables_path -t nat -A POSTROUTING -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j MASQUERADE
|
|
ExecStart=$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 MASQUERADE
|
|
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=$ip6tables_path -t nat -A POSTROUTING -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j MASQUERADE
|
|
ExecStart=$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 MASQUERADE
|
|
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
|
|
if [ "$os" != "openSUSE" ]; then
|
|
update_rclocal
|
|
fi
|
|
# Generates the custom client.conf
|
|
new_client_setup
|
|
# Enable and start the wg-quick service
|
|
(
|
|
set -x
|
|
systemctl enable --now wg-quick@wg0.service >/dev/null 2>&1
|
|
)
|
|
echo
|
|
qrencode -t UTF8 < "$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) Show QR code for a client"
|
|
echo " 5) Remove WireGuard"
|
|
echo " 6) Exit"
|
|
read -rp "Option: " option
|
|
until [[ "$option" =~ ^[1-6]$ ]]; 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 add_client
|
|
# 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)..."
|
|
num_of_clients=$(grep -c '^# BEGIN_PEER' /etc/wireguard/wg0.conf)
|
|
if [[ "$num_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 [ "$num_of_clients" = 1 ]; then
|
|
printf '\n%s\n' "Total: 1 client"
|
|
elif [ -n "$num_of_clients" ]; then
|
|
printf '\n%s\n' "Total: $num_of_clients clients"
|
|
fi
|
|
exit
|
|
;;
|
|
3)
|
|
num_of_clients=$(grep -c '^# BEGIN_PEER' /etc/wireguard/wg0.conf)
|
|
if [[ "$num_of_clients" = 0 ]]; then
|
|
echo
|
|
echo "There are no existing clients!"
|
|
exit
|
|
fi
|
|
echo
|
|
echo "Select the client to remove:"
|
|
grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | nl -s ') '
|
|
read -rp "Client: " client_num
|
|
[ -z "$client_num" ] && abort_and_exit
|
|
until [[ "$client_num" =~ ^[0-9]+$ && "$client_num" -le "$num_of_clients" ]]; do
|
|
echo "$client_num: invalid selection."
|
|
read -rp "Client: " client_num
|
|
[ -z "$client_num" ] && abort_and_exit
|
|
done
|
|
client=$(grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | sed -n "$client_num"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)
|
|
num_of_clients=$(grep -c '^# BEGIN_PEER' /etc/wireguard/wg0.conf)
|
|
if [[ "$num_of_clients" = 0 ]]; then
|
|
echo
|
|
echo "There are no existing clients!"
|
|
exit
|
|
fi
|
|
echo
|
|
echo "Select the client to show QR code for:"
|
|
grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | nl -s ') '
|
|
read -rp "Client: " client_num
|
|
[ -z "$client_num" ] && abort_and_exit
|
|
until [[ "$client_num" =~ ^[0-9]+$ && "$client_num" -le "$num_of_clients" ]]; do
|
|
echo "$client_num: invalid selection."
|
|
read -rp "Client: " client_num
|
|
[ -z "$client_num" ] && abort_and_exit
|
|
done
|
|
client=$(grep '^# BEGIN_PEER' /etc/wireguard/wg0.conf | cut -d ' ' -f 3 | sed -n "$client_num"p)
|
|
echo
|
|
get_export_dir
|
|
wg_file="$export_dir$client.conf"
|
|
if [ ! -f "$wg_file" ]; then
|
|
echo "Error: Cannot show QR code. Missing client config file $wg_file" >&2
|
|
echo " You may instead re-run this script and add a new client." >&2
|
|
exit 1
|
|
fi
|
|
qrencode -t UTF8 < "$wg_file"
|
|
echo -e '\xE2\x86\x91 That is a QR code containing the client configuration.'
|
|
echo
|
|
echo "Configuration for '$client' is available in: $wg_file"
|
|
exit
|
|
;;
|
|
5)
|
|
echo
|
|
read -rp "Confirm WireGuard removal? [y/N]: " remove
|
|
until [[ "$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="$port"/udp
|
|
firewall-cmd -q --permanent --zone=trusted --remove-source=10.7.0.0/24
|
|
firewall-cmd -q --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j MASQUERADE
|
|
firewall-cmd -q --permanent --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.7.0.0/24 ! -d 10.7.0.0/24 -j MASQUERADE
|
|
if grep -qs 'fddd:2c4:2c4:2c4::1/64' /etc/wireguard/wg0.conf; then
|
|
ip6=$(firewall-cmd --direct --get-rules ipv6 nat POSTROUTING | grep '\-s fddd:2c4:2c4:2c4::/64 '"'"'!'"'"' -d fddd:2c4:2c4:2c4::/64' | grep -oE '[^ ]+$')
|
|
firewall-cmd -q --zone=trusted --remove-source=fddd:2c4:2c4:2c4::/64
|
|
firewall-cmd -q --permanent --zone=trusted --remove-source=fddd:2c4:2c4:2c4::/64
|
|
firewall-cmd -q --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j MASQUERADE
|
|
firewall-cmd -q --permanent --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:2c4:2c4:2c4::/64 ! -d fddd:2c4:2c4:2c4::/64 -j MASQUERADE
|
|
fi
|
|
else
|
|
systemctl disable --now wg-iptables.service
|
|
rm -f /etc/systemd/system/wg-iptables.service
|
|
fi
|
|
systemctl disable --now wg-quick@wg0.service
|
|
rm -f /etc/sysctl.d/99-wireguard-forward.conf /etc/sysctl.d/99-wireguard-optimize.conf
|
|
if [ ! -f /usr/sbin/openvpn ] && [ ! -f /usr/sbin/ipsec ] \
|
|
&& [ ! -f /usr/local/sbin/ipsec ]; then
|
|
echo 0 > /proc/sys/net/ipv4/ip_forward
|
|
echo 0 > /proc/sys/net/ipv6/conf/all/forwarding
|
|
fi
|
|
ipt_cmd="systemctl restart wg-iptables.service"
|
|
if grep -qs "$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 [[ "$os" == "fedora" ]]; then
|
|
(
|
|
set -x
|
|
dnf remove -y wireguard-tools >/dev/null
|
|
rm -rf /etc/wireguard/
|
|
)
|
|
elif [[ "$os" == "openSUSE" ]]; then
|
|
(
|
|
set -x
|
|
zypper remove -y wireguard-tools >/dev/null
|
|
rm -rf /etc/wireguard/
|
|
)
|
|
fi
|
|
echo
|
|
echo "WireGuard removed!"
|
|
else
|
|
echo
|
|
echo "WireGuard removal aborted!"
|
|
fi
|
|
exit
|
|
;;
|
|
6)
|
|
exit
|
|
;;
|
|
esac
|
|
fi
|
|
}
|
|
|
|
## Defer setup until we have the complete script
|
|
wgsetup "$@"
|
|
|
|
exit 0
|