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extPanel.sh
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#!/bin/bash
# shellcheck disable=SC1091,SC2164,SC2034,SC1072,SC1073,SC1009
# Secure OpenVPN server installer for Debian, Ubuntu, CentOS, Amazon Linux 2, Fedora, Oracle Linux 8, Arch Linux, Rocky Linux and AlmaLinux.
# https://github.com/angristan/openvpn-install
SCRIPT_VERSION=2
SCRIPT_URL_ADDRESS="https://raw.githubusercontent.com/ExtremeDot/eXtremePanel/master/extPanel.sh"
USERCONTROL_SCRIPT="/etc/openvpn/userControl.sh"
DATABASE_JSON_FILE="/usr/local/etc/eXtremePanel/database/eXtremePanel.json"
PYTHON_VPNUSAGE_FILE="/usr/local/etc/eXtremePanel/database/vpn_usage_tracker.py"
CRON_JOB="* * * * * /usr/bin/python3 /usr/local/etc/eXtremePanel/database/vpn_usage_tracker.py"
CLIENT_TEMPLATE="/etc/openvpn/client-template.txt"
SERVER_CONFIG_FILE="/etc/openvpn/server.conf"
IP=""
PORT=""
DNS1_CONFIG="1.1.1.1"
DNS2_CONFIG="1.0.0.1"
if [ ! -d "/root/eXtremePanel/configs/" ]; then
mkdir -p /root/eXtremePanel/configs/
fi
if [ ! -d "/usr/local/etc/eXtremePanel/database/" ]; then
mkdir -p /usr/local/etc/eXtremePanel/database/
fi
if [ ! -d "/usr/local/etc/eXtremePanel/backup/" ]; then
mkdir -p /usr/local/etc/eXtremePanel/backup/
fi
# Define color codes
RED='\033[0;31m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
MAGENTA='\033[0;35m'
NC='\033[0m' # No Color
function eXtpause() {
echo ""
read -p "Press Enter to continue..." # Prompts the user and waits for Enter
echo ""
}
function isRoot() {
if [ "$EUID" -ne 0 ]; then
return 1
fi
}
function tunAvailable() {
if [ ! -e /dev/net/tun ]; then
return 1
fi
}
function checkOS() {
if [[ -e /etc/debian_version ]]; then
OS="debian"
source /etc/os-release
if [[ $ID == "debian" || $ID == "raspbian" ]]; then
if [[ $VERSION_ID -lt 9 ]]; then
echo "⚠️ Your version of Debian is not supported."
echo ""
echo "However, if you're using Debian >= 9 or unstable/testing then you can continue, at your own risk."
echo ""
until [[ $CONTINUE =~ (y|n) ]]; do
read -rp "Continue? [y/n]: " -e CONTINUE
done
if [[ $CONTINUE == "n" ]]; then
exit 1
fi
fi
elif [[ $ID == "ubuntu" ]]; then
OS="ubuntu"
MAJOR_UBUNTU_VERSION=$(echo "$VERSION_ID" | cut -d '.' -f1)
if [[ $MAJOR_UBUNTU_VERSION -lt 16 ]]; then
echo "⚠️ Your version of Ubuntu is not supported."
echo ""
echo "However, if you're using Ubuntu >= 16.04 or beta, then you can continue, at your own risk."
echo ""
until [[ $CONTINUE =~ (y|n) ]]; do
read -rp "Continue? [y/n]: " -e CONTINUE
done
if [[ $CONTINUE == "n" ]]; then
exit 1
fi
fi
fi
elif [[ -e /etc/system-release ]]; then
source /etc/os-release
if [[ $ID == "fedora" || $ID_LIKE == "fedora" ]]; then
OS="fedora"
fi
if [[ $ID == "centos" || $ID == "rocky" || $ID == "almalinux" ]]; then
OS="centos"
if [[ ${VERSION_ID%.*} -lt 7 ]]; then
echo "⚠️ Your version of CentOS is not supported."
echo ""
echo "The script only support CentOS 7 and CentOS 8."
echo ""
exit 1
fi
fi
if [[ $ID == "ol" ]]; then
OS="oracle"
if [[ ! $VERSION_ID =~ (8) ]]; then
echo "Your version of Oracle Linux is not supported."
echo ""
echo "The script only support Oracle Linux 8."
exit 1
fi
fi
if [[ $ID == "amzn" ]]; then
OS="amzn"
if [[ $VERSION_ID != "2" ]]; then
echo "⚠️ Your version of Amazon Linux is not supported."
echo ""
echo "The script only support Amazon Linux 2."
echo ""
exit 1
fi
fi
elif [[ -e /etc/arch-release ]]; then
OS=arch
else
echo "Looks like you aren't running this installer on a Debian, Ubuntu, Fedora, CentOS, Amazon Linux 2, Oracle Linux 8 or Arch Linux system"
exit 1
fi
}
function initialCheck() {
if ! isRoot; then
echo -e "${RED}Sorry, you need to run this as root. ${NC}"
exit 1
fi
if ! tunAvailable; then
echo -e "${RED}TUN is not available. ${NC}"
exit 1
fi
checkOS
}
function installResolveService() {
#!/bin/bash
# Check if nslookup github returns Server: 127.0.0.53
if nslookup github | grep -q "127.0.0.53"; then
echo "Detected local DNS server (127.0.0.53)."
# Check if resolvconf is installed
if ! dpkg -l | grep -q resolvconf; then
echo "resolvconf is not installed. Installing..."
sudo apt-get install -y resolvconf
else
echo "resolvconf is already installed."
fi
# Add new nameserver entries
echo "nameserver 1.1.1.1" | sudo tee /etc/resolvconf/resolv.conf.d/head > /dev/null
echo "nameserver 1.0.0.1" | sudo tee -a /etc/resolvconf/resolv.conf.d/head > /dev/null
echo "nameserver 2606:4700:4700::1111" | sudo tee -a /etc/resolvconf/resolv.conf.d/head > /dev/null
echo "nameserver 2606:4700:4700::1001" | sudo tee -a /etc/resolvconf/resolv.conf.d/head > /dev/null
# Restart resolvconf service
sleep 1
sudo systemctl enable resolvconf.service
sudo systemctl start resolvconf.service
sleep 1
sudo resolvconf --enable-updates
sleep 1
sudo resolvconf -u
echo "DNS configuration updated and resolvconf service restarted."
else
echo "Local DNS server (127.0.0.53) not detected."
fi
}
function installUnbound() {
# If Unbound isn't installed, install it
if [[ ! -e /etc/unbound/unbound.conf ]]; then
if [[ $OS =~ (debian|ubuntu) ]]; then
apt-get install -y unbound
# Configuration
echo 'interface: 10.8.0.1
access-control: 10.8.0.1/24 allow
hide-identity: yes
hide-version: yes
use-caps-for-id: yes
prefetch: yes' >>/etc/unbound/unbound.conf
elif [[ $OS =~ (centos|amzn|oracle) ]]; then
yum install -y unbound
# Configuration
sed -i 's|# interface: 0.0.0.0$|interface: 10.8.0.1|' /etc/unbound/unbound.conf
sed -i 's|# access-control: 127.0.0.0/8 allow|access-control: 10.8.0.1/24 allow|' /etc/unbound/unbound.conf
sed -i 's|# hide-identity: no|hide-identity: yes|' /etc/unbound/unbound.conf
sed -i 's|# hide-version: no|hide-version: yes|' /etc/unbound/unbound.conf
sed -i 's|use-caps-for-id: no|use-caps-for-id: yes|' /etc/unbound/unbound.conf
elif [[ $OS == "fedora" ]]; then
dnf install -y unbound
# Configuration
sed -i 's|# interface: 0.0.0.0$|interface: 10.8.0.1|' /etc/unbound/unbound.conf
sed -i 's|# access-control: 127.0.0.0/8 allow|access-control: 10.8.0.1/24 allow|' /etc/unbound/unbound.conf
sed -i 's|# hide-identity: no|hide-identity: yes|' /etc/unbound/unbound.conf
sed -i 's|# hide-version: no|hide-version: yes|' /etc/unbound/unbound.conf
sed -i 's|# use-caps-for-id: no|use-caps-for-id: yes|' /etc/unbound/unbound.conf
elif [[ $OS == "arch" ]]; then
pacman -Syu --noconfirm unbound
# Get root servers list
curl -o /etc/unbound/root.hints https://www.internic.net/domain/named.cache
if [[ ! -f /etc/unbound/unbound.conf.old ]]; then
mv /etc/unbound/unbound.conf /etc/unbound/unbound.conf.old
fi
echo 'server:
use-syslog: yes
do-daemonize: no
username: "unbound"
directory: "/etc/unbound"
trust-anchor-file: trusted-key.key
root-hints: root.hints
interface: 10.8.0.1
access-control: 10.8.0.1/24 allow
port: 53
num-threads: 2
use-caps-for-id: yes
harden-glue: yes
hide-identity: yes
hide-version: yes
qname-minimisation: yes
prefetch: yes' >/etc/unbound/unbound.conf
fi
# IPv6 DNS for all OS
if [[ $IPV6_SUPPORT == 'y' ]]; then
echo 'interface: fd42:42:42:42::1
access-control: fd42:42:42:42::/112 allow' >>/etc/unbound/unbound.conf
fi
if [[ ! $OS =~ (fedora|centos|amzn|oracle) ]]; then
# DNS Rebinding fix
echo "private-address: 10.0.0.0/8
private-address: fd42:42:42:42::/112
private-address: 172.16.0.0/12
private-address: 192.168.0.0/16
private-address: 169.254.0.0/16
private-address: fd00::/8
private-address: fe80::/10
private-address: 127.0.0.0/8
private-address: ::ffff:0:0/96" >>/etc/unbound/unbound.conf
fi
else # Unbound is already installed
echo 'include: /etc/unbound/openvpn.conf' >>/etc/unbound/unbound.conf
# Add Unbound 'server' for the OpenVPN subnet
echo 'server:
interface: 10.8.0.1
access-control: 10.8.0.1/24 allow
hide-identity: yes
hide-version: yes
use-caps-for-id: yes
prefetch: yes
private-address: 10.0.0.0/8
private-address: fd42:42:42:42::/112
private-address: 172.16.0.0/12
private-address: 192.168.0.0/16
private-address: 169.254.0.0/16
private-address: fd00::/8
private-address: fe80::/10
private-address: 127.0.0.0/8
private-address: ::ffff:0:0/96' >/etc/unbound/openvpn.conf
if [[ $IPV6_SUPPORT == 'y' ]]; then
echo 'interface: fd42:42:42:42::1
access-control: fd42:42:42:42::/112 allow' >>/etc/unbound/openvpn.conf
fi
fi
systemctl enable unbound
systemctl restart unbound
}
check_jq_installed() {
if ! command -v jq &> /dev/null; then
echo -e "${YELLOW}jq is not installed. Trying to install it. ${NC}"
apt install jq -y
fi
}
check_jq_installed
clear
# start
function installQuestions() {
echo -e "${CYAN}Welcome to the eXtreme OpenVPN installer! ${NC}"
echo ""
echo "I need to ask you a few questions before starting the setup."
echo "You can leave the default options and just press enter if you are ok with them."
echo ""
echo "I need to know the IPv4 address of the network interface you want OpenVPN listening to."
echo "Unless your server is behind NAT, it should be your public IPv4 address."
echo ""
# Detect public IPv4 address and pre-fill for the user
IP=$(ip -4 addr | sed -ne 's|^.* inet \([^/]*\)/.* scope global.*$|\1|p' | head -1)
if [[ -z $IP ]]; then
# Detect public IPv6 address
IP=$(ip -6 addr | sed -ne 's|^.* inet6 \([^/]*\)/.* scope global.*$|\1|p' | head -1)
fi
APPROVE_IP=${APPROVE_IP:-n}
if [[ $APPROVE_IP =~ n ]]; then
read -rp "IP address: " -e -i "$IP" IP
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 "It seems this server is behind NAT. What is its public IPv4 address or hostname?"
echo "We need it for the clients to connect to the server."
PUBLICIP=$(curl -s https://api.ipify.org)
until [[ $ENDPOINT != "" ]]; do
read -rp "Public IPv4 address or hostname: " -e -i "$PUBLICIP" ENDPOINT
done
fi
echo ""
echo "Checking for IPv6 connectivity..."
echo ""
# "ping6" and "ping -6" availability varies depending on the distribution
if type ping6 >/dev/null 2>&1; then
PING6="ping6 -c3 ipv6.google.com > /dev/null 2>&1"
else
PING6="ping -6 -c3 ipv6.google.com > /dev/null 2>&1"
fi
if eval "$PING6"; then
echo "Your host appears to have IPv6 connectivity."
SUGGESTION="y"
else
echo "Your host does not appear to have IPv6 connectivity."
SUGGESTION="n"
fi
echo ""
# Ask the user if they want to enable IPv6 regardless its availability.
until [[ $IPV6_SUPPORT =~ (y|n) ]]; do
read -rp "Do you want to enable IPv6 support (NAT)? [y/n]: " -e -i $SUGGESTION IPV6_SUPPORT
done
echo ""
echo "What port do you want OpenVPN to listen to?"
echo " 1) Default: 1194"
echo " 2) Custom"
echo -e "${YELLOW} 3) Random [10001-65535] ${NC}"
until [[ $PORT_CHOICE =~ ^[1-3]$ ]]; do
read -rp "Port choice [1-3]: " -e -i 3 PORT_CHOICE
done
case $PORT_CHOICE in
1)
PORT="1194"
;;
2)
until [[ $PORT =~ ^[0-9]+$ ]] && [ "$PORT" -ge 1 ] && [ "$PORT" -le 65535 ]; do
read -rp "Custom port [1-65535]: " -e -i 21194 PORT
done
;;
3)
# Generate random number within private ports range
PORT=$(shuf -i10001-65535 -n1)
echo "Random Port: $PORT"
;;
esac
echo ""
echo "What protocol do you want OpenVPN to use?"
echo "UDP is faster. Unless it is not available, you shouldn't use TCP."
echo "In Iran UDP is unstable. We have to use TCP."
echo " 1) UDP"
echo -e "${YELLOW} 2) TCP ${NC}"
until [[ $PROTOCOL_CHOICE =~ ^[1-2]$ ]]; do
read -rp "Protocol [1-2]: " -e -i 2 PROTOCOL_CHOICE
done
case $PROTOCOL_CHOICE in
1)
PROTOCOL="udp"
;;
2)
PROTOCOL="tcp"
;;
esac
echo ""
echo "What DNS resolvers do you want to use with the VPN?"
echo " 1) Current system resolvers (from /etc/resolv.conf)"
echo " 2) Cloudflare (Anycast: worldwide)"
echo " 3) Google (Anycast: worldwide)"
echo -e "${YELLOW} 4) AdGuard DNS (Anycast: worldwide) ${NC}"
echo " 5) Custom"
until [[ $DNS =~ ^[0-9]+$ ]] && [ "$DNS" -ge 1 ] && [ "$DNS" -le 4 ]; do
read -rp "DNS [1-12]: " -e -i 4 DNS
if [[ $DNS == "5" ]]; then
until [[ $DNS1 =~ ^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$ ]]; do
read -rp "Primary DNS: " -e DNS1
done
until [[ $DNS2 =~ ^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$ ]]; do
read -rp "Secondary DNS (optional): " -e DNS2
if [[ $DNS2 == "" ]]; then
break
fi
done
fi
done
echo ""
echo "Do you want to use compression? It is not recommended since the VORACLE attack makes use of it."
until [[ $COMPRESSION_ENABLED =~ (y|n) ]]; do
read -rp"Enable compression? [y/n]: " -e -i n COMPRESSION_ENABLED
done
if [[ $COMPRESSION_ENABLED == "y" ]]; then
echo "Choose which compression algorithm you want to use: (they are ordered by efficiency)"
echo " 1) LZ4-v2"
echo " 2) LZ4"
echo " 3) LZ0"
until [[ $COMPRESSION_CHOICE =~ ^[1-3]$ ]]; do
read -rp"Compression algorithm [1-3]: " -e -i 1 COMPRESSION_CHOICE
done
case $COMPRESSION_CHOICE in
1)
COMPRESSION_ALG="lz4-v2"
;;
2)
COMPRESSION_ALG="lz4"
;;
3)
COMPRESSION_ALG="lzo"
;;
esac
fi
echo ""
echo "Do you want to customize encryption settings?"
echo "Unless you know what you're doing, you should stick with the default parameters provided by the script."
echo "Note that whatever you choose, all the choices presented in the script are safe. (Unlike OpenVPN's defaults)"
echo "See https://github.com/angristan/openvpn-install#security-and-encryption to learn more."
echo ""
until [[ $CUSTOMIZE_ENC =~ (y|n) ]]; do
read -rp "Customize encryption settings? [y/n]: " -e -i n CUSTOMIZE_ENC
done
if [[ $CUSTOMIZE_ENC == "n" ]]; then
# Use default, sane and fast parameters
CIPHER="AES-128-GCM"
CERT_TYPE="1" # ECDSA
CERT_CURVE="prime256v1"
CC_CIPHER="TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256"
DH_TYPE="1" # ECDH
DH_CURVE="prime256v1"
HMAC_ALG="SHA256"
TLS_SIG="1" # tls-crypt
else
echo ""
echo "Choose which cipher you want to use for the data channel:"
echo " 1) AES-128-GCM (recommended)"
echo " 2) AES-192-GCM"
echo " 3) AES-256-GCM"
echo " 4) AES-128-CBC"
echo " 5) AES-192-CBC"
echo " 6) AES-256-CBC"
until [[ $CIPHER_CHOICE =~ ^[1-6]$ ]]; do
read -rp "Cipher [1-6]: " -e -i 1 CIPHER_CHOICE
done
case $CIPHER_CHOICE in
1)
CIPHER="AES-128-GCM"
;;
2)
CIPHER="AES-192-GCM"
;;
3)
CIPHER="AES-256-GCM"
;;
4)
CIPHER="AES-128-CBC"
;;
5)
CIPHER="AES-192-CBC"
;;
6)
CIPHER="AES-256-CBC"
;;
esac
echo ""
echo "Choose what kind of certificate you want to use:"
echo " 1) ECDSA (recommended)"
echo " 2) RSA"
until [[ $CERT_TYPE =~ ^[1-2]$ ]]; do
read -rp"Certificate key type [1-2]: " -e -i 1 CERT_TYPE
done
case $CERT_TYPE in
1)
echo ""
echo "Choose which curve you want to use for the certificate's key:"
echo " 1) prime256v1 (recommended)"
echo " 2) secp384r1"
echo " 3) secp521r1"
until [[ $CERT_CURVE_CHOICE =~ ^[1-3]$ ]]; do
read -rp"Curve [1-3]: " -e -i 1 CERT_CURVE_CHOICE
done
case $CERT_CURVE_CHOICE in
1)
CERT_CURVE="prime256v1"
;;
2)
CERT_CURVE="secp384r1"
;;
3)
CERT_CURVE="secp521r1"
;;
esac
;;
2)
echo ""
echo "Choose which size you want to use for the certificate's RSA key:"
echo " 1) 2048 bits (recommended)"
echo " 2) 3072 bits"
echo " 3) 4096 bits"
until [[ $RSA_KEY_SIZE_CHOICE =~ ^[1-3]$ ]]; do
read -rp "RSA key size [1-3]: " -e -i 1 RSA_KEY_SIZE_CHOICE
done
case $RSA_KEY_SIZE_CHOICE in
1)
RSA_KEY_SIZE="2048"
;;
2)
RSA_KEY_SIZE="3072"
;;
3)
RSA_KEY_SIZE="4096"
;;
esac
;;
esac
echo ""
echo "Choose which cipher you want to use for the control channel:"
case $CERT_TYPE in
1)
echo " 1) ECDHE-ECDSA-AES-128-GCM-SHA256 (recommended)"
echo " 2) ECDHE-ECDSA-AES-256-GCM-SHA384"
until [[ $CC_CIPHER_CHOICE =~ ^[1-2]$ ]]; do
read -rp"Control channel cipher [1-2]: " -e -i 1 CC_CIPHER_CHOICE
done
case $CC_CIPHER_CHOICE in
1)
CC_CIPHER="TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256"
;;
2)
CC_CIPHER="TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384"
;;
esac
;;
2)
echo " 1) ECDHE-RSA-AES-128-GCM-SHA256 (recommended)"
echo " 2) ECDHE-RSA-AES-256-GCM-SHA384"
until [[ $CC_CIPHER_CHOICE =~ ^[1-2]$ ]]; do
read -rp"Control channel cipher [1-2]: " -e -i 1 CC_CIPHER_CHOICE
done
case $CC_CIPHER_CHOICE in
1)
CC_CIPHER="TLS-ECDHE-RSA-WITH-AES-128-GCM-SHA256"
;;
2)
CC_CIPHER="TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384"
;;
esac
;;
esac
echo ""
echo "Choose what kind of Diffie-Hellman key you want to use:"
echo " 1) ECDH (recommended)"
echo " 2) DH"
until [[ $DH_TYPE =~ [1-2] ]]; do
read -rp"DH key type [1-2]: " -e -i 1 DH_TYPE
done
case $DH_TYPE in
1)
echo ""
echo "Choose which curve you want to use for the ECDH key:"
echo " 1) prime256v1 (recommended)"
echo " 2) secp384r1"
echo " 3) secp521r1"
while [[ $DH_CURVE_CHOICE != "1" && $DH_CURVE_CHOICE != "2" && $DH_CURVE_CHOICE != "3" ]]; do
read -rp"Curve [1-3]: " -e -i 1 DH_CURVE_CHOICE
done
case $DH_CURVE_CHOICE in
1)
DH_CURVE="prime256v1"
;;
2)
DH_CURVE="secp384r1"
;;
3)
DH_CURVE="secp521r1"
;;
esac
;;
2)
echo ""
echo "Choose what size of Diffie-Hellman key you want to use:"
echo " 1) 2048 bits (recommended)"
echo " 2) 3072 bits"
echo " 3) 4096 bits"
until [[ $DH_KEY_SIZE_CHOICE =~ ^[1-3]$ ]]; do
read -rp "DH key size [1-3]: " -e -i 1 DH_KEY_SIZE_CHOICE
done
case $DH_KEY_SIZE_CHOICE in
1)
DH_KEY_SIZE="2048"
;;
2)
DH_KEY_SIZE="3072"
;;
3)
DH_KEY_SIZE="4096"
;;
esac
;;
esac
echo ""
# The "auth" options behaves differently with AEAD ciphers
if [[ $CIPHER =~ CBC$ ]]; then
echo "The digest algorithm authenticates data channel packets and tls-auth packets from the control channel."
elif [[ $CIPHER =~ GCM$ ]]; then
echo "The digest algorithm authenticates tls-auth packets from the control channel."
fi
echo "Which digest algorithm do you want to use for HMAC?"
echo " 1) SHA-256 (recommended)"
echo " 2) SHA-384"
echo " 3) SHA-512"
until [[ $HMAC_ALG_CHOICE =~ ^[1-3]$ ]]; do
read -rp "Digest algorithm [1-3]: " -e -i 1 HMAC_ALG_CHOICE
done
case $HMAC_ALG_CHOICE in
1)
HMAC_ALG="SHA256"
;;
2)
HMAC_ALG="SHA384"
;;
3)
HMAC_ALG="SHA512"
;;
esac
echo ""
echo "You can add an additional layer of security to the control channel with tls-auth and tls-crypt"
echo "tls-auth authenticates the packets, while tls-crypt authenticate and encrypt them."
echo -e "${YELLOW} 1) tls-crypt (recommended) ${NC}"
echo " 2) tls-auth"
until [[ $TLS_SIG =~ [1-2] ]]; do
read -rp "Control channel additional security mechanism [1-2]: " -e -i 1 TLS_SIG
done
fi
echo ""
echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now."
echo "You will be able to generate a client at the end of the installation."
APPROVE_INSTALL=${APPROVE_INSTALL:-n}
if [[ $APPROVE_INSTALL =~ n ]]; then
read -n1 -r -p "Press any key to continue..."
fi
}
function installOpenVPN() {
if [[ $AUTO_INSTALL == "y" ]]; then
# Set default choices so that no questions will be asked.
APPROVE_INSTALL=${APPROVE_INSTALL:-y}
APPROVE_IP=${APPROVE_IP:-y}
IPV6_SUPPORT=${IPV6_SUPPORT:-n}
PORT_CHOICE=${PORT_CHOICE:-1}
PROTOCOL_CHOICE=${PROTOCOL_CHOICE:-1}
DNS=${DNS:-1}
COMPRESSION_ENABLED=${COMPRESSION_ENABLED:-n}
CUSTOMIZE_ENC=${CUSTOMIZE_ENC:-n}
CLIENT=${CLIENT:-client}
PASS=${PASS:-1}
CONTINUE=${CONTINUE:-y}
# Behind NAT, we'll default to the publicly reachable IPv4/IPv6.
if [[ $IPV6_SUPPORT == "y" ]]; then
if ! PUBLIC_IP=$(curl -f --retry 5 --retry-connrefused https://ip.seeip.org); then
PUBLIC_IP=$(dig -6 TXT +short o-o.myaddr.l.google.com @ns1.google.com | tr -d '"')
fi
else
if ! PUBLIC_IP=$(curl -f --retry 5 --retry-connrefused -4 https://ip.seeip.org); then
PUBLIC_IP=$(dig -4 TXT +short o-o.myaddr.l.google.com @ns1.google.com | tr -d '"')
fi
fi
ENDPOINT=${ENDPOINT:-$PUBLIC_IP}
fi
# Run setup questions first, and set other variables if auto-install
installQuestions
# Get the "public" interface from the default route
NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)
if [[ -z $NIC ]] && [[ $IPV6_SUPPORT == 'y' ]]; then
NIC=$(ip -6 route show default | sed -ne 's/^default .* dev \([^ ]*\) .*$/\1/p')
fi
# $NIC can not be empty for script rm-openvpn-rules.sh
if [[ -z $NIC ]]; then
echo
echo "Can not detect public interface."
echo "This needs for setup MASQUERADE."
until [[ $CONTINUE =~ (y|n) ]]; do
read -rp "Continue? [y/n]: " -e CONTINUE
done
if [[ $CONTINUE == "n" ]]; then
exit 1
fi
fi
# If OpenVPN isn't installed yet, install it. This script is more-or-less
# idempotent on multiple runs, but will only install OpenVPN from upstream
# the first time.
if [[ ! -e $SERVER_CONFIG_FILE ]]; then
if [[ $OS =~ (debian|ubuntu) ]]; then
apt-get update
apt-get -y install ca-certificates gnupg
# We add the OpenVPN repo to get the latest version.
if [[ $VERSION_ID == "16.04" ]]; then
echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" >/etc/apt/sources.list.d/openvpn.list
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
apt-get update
fi
# Ubuntu > 16.04 and Debian > 8 have OpenVPN >= 2.4 without the need of a third party repository.
apt-get install -y openvpn iptables openssl wget ca-certificates curl
elif [[ $OS == 'centos' ]]; then
yum install -y epel-release
yum install -y openvpn iptables openssl wget ca-certificates curl tar 'policycoreutils-python*'
elif [[ $OS == 'oracle' ]]; then
yum install -y oracle-epel-release-el8
yum-config-manager --enable ol8_developer_EPEL
yum install -y openvpn iptables openssl wget ca-certificates curl tar policycoreutils-python-utils
elif [[ $OS == 'amzn' ]]; then
amazon-linux-extras install -y epel
yum install -y openvpn iptables openssl wget ca-certificates curl
elif [[ $OS == 'fedora' ]]; then
dnf install -y openvpn iptables openssl wget ca-certificates curl policycoreutils-python-utils
elif [[ $OS == 'arch' ]]; then
# Install required dependencies and upgrade the system
pacman --needed --noconfirm -Syu openvpn iptables openssl wget ca-certificates curl
fi
# An old version of easy-rsa was available by default in some openvpn packages
if [[ -d /etc/openvpn/easy-rsa/ ]]; then
rm -rf /etc/openvpn/easy-rsa/
fi
fi
# Find out if the machine uses nogroup or nobody for the permissionless group
if grep -qs "^nogroup:" /etc/group; then
NOGROUP=nogroup
else
NOGROUP=nobody
fi
# Install the latest version of easy-rsa from source, if not already installed.
if [[ ! -d /etc/openvpn/easy-rsa/ ]]; then
local version="3.1.2"
wget -O ~/easy-rsa.tgz https://github.com/OpenVPN/easy-rsa/releases/download/v${version}/EasyRSA-${version}.tgz
mkdir -p /etc/openvpn/easy-rsa
tar xzf ~/easy-rsa.tgz --strip-components=1 --no-same-owner --directory /etc/openvpn/easy-rsa
rm -f ~/easy-rsa.tgz
cd /etc/openvpn/easy-rsa/ || return
case $CERT_TYPE in
1)
echo "set_var EASYRSA_ALGO ec" >vars
echo "set_var EASYRSA_CURVE $CERT_CURVE" >>vars
;;
2)
echo "set_var EASYRSA_KEY_SIZE $RSA_KEY_SIZE" >vars
;;
esac
# Generate a random, alphanumeric identifier of 16 characters for CN and one for server name
SERVER_CN="cn_$(head /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)"
echo "$SERVER_CN" >SERVER_CN_GENERATED
SERVER_NAME="server_$(head /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)"
echo "$SERVER_NAME" >SERVER_NAME_GENERATED
# Create the PKI, set up the CA, the DH params and the server certificate
./easyrsa init-pki
EASYRSA_CA_EXPIRE=3650 ./easyrsa --batch --req-cn="$SERVER_CN" build-ca nopass
if [[ $DH_TYPE == "2" ]]; then
# ECDH keys are generated on-the-fly so we don't need to generate them beforehand
openssl dhparam -out dh.pem $DH_KEY_SIZE
fi
EASYRSA_CERT_EXPIRE=3650 ./easyrsa --batch build-server-full "$SERVER_NAME" nopass
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
case $TLS_SIG in
1)
# Generate tls-crypt key
openvpn --genkey secret /etc/openvpn/tls-crypt.key
;;
2)
# Generate tls-auth key
openvpn --genkey secret /etc/openvpn/tls-auth.key
;;
esac
else
# If easy-rsa is already installed, grab the generated SERVER_NAME
# for client configs
cd /etc/openvpn/easy-rsa/ || return
SERVER_NAME=$(cat SERVER_NAME_GENERATED)
fi
# Move all the generated files
cp pki/ca.crt pki/private/ca.key "pki/issued/$SERVER_NAME.crt" "pki/private/$SERVER_NAME.key" /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn
if [[ $DH_TYPE == "2" ]]; then
cp dh.pem /etc/openvpn
fi
# Make cert revocation list readable for non-root
chmod 644 /etc/openvpn/crl.pem
# Generate server.conf
echo "port $PORT" >$SERVER_CONFIG_FILE
if [[ $IPV6_SUPPORT == 'n' ]]; then
echo "proto $PROTOCOL" >> $SERVER_CONFIG_FILE
elif [[ $IPV6_SUPPORT == 'y' ]]; then
echo "proto ${PROTOCOL}6" >> $SERVER_CONFIG_FILE
fi
echo "dev tun
user nobody
group $NOGROUP
persist-key
persist-tun
keepalive 10 120
topology subnet
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt" >> $SERVER_CONFIG_FILE
# DNS resolvers
case $DNS in
1) # Current system resolvers
# Locate the proper resolv.conf
# Needed for systems running systemd-resolved
if grep -q "127.0.0.53" "/etc/resolv.conf"; then
RESOLVCONF='/run/systemd/resolve/resolv.conf'
else
RESOLVCONF='/etc/resolv.conf'
fi
# Obtain the resolvers from resolv.conf and use them for OpenVPN
sed -ne 's/^nameserver[[:space:]]\+\([^[:space:]]\+\).*$/\1/p' $RESOLVCONF | while read -r line; do
# Copy, if it's a IPv4 |or| if IPv6 is enabled, IPv4/IPv6 does not matter
if [[ $line =~ ^[0-9.]*$ ]] || [[ $IPV6_SUPPORT == 'y' ]]; then
echo "push \"dhcp-option DNS $line\"" >> $SERVER_CONFIG_FILE
fi
done
;;
2) # Cloudflare
echo 'push "dhcp-option DNS 1.0.0.1"' >> $SERVER_CONFIG_FILE
echo 'push "dhcp-option DNS 1.1.1.1"' >> $SERVER_CONFIG_FILE
DNS1_CONFIG="1.1.1.1"
DNS2_CONFIG="1.0.0.1"
;;
3) # Google
echo 'push "dhcp-option DNS 8.8.8.8"' >> $SERVER_CONFIG_FILE
echo 'push "dhcp-option DNS 8.8.4.4"' >> $SERVER_CONFIG_FILE
DNS1_CONFIG="8.8.8.8"
DNS2_CONFIG="8.8.4.4"
;;
4) # AdGuard DNS
echo 'push "dhcp-option DNS 94.140.14.14"' >> $SERVER_CONFIG_FILE
echo 'push "dhcp-option DNS 94.140.15.15"' >> $SERVER_CONFIG_FILE
DNS1_CONFIG="94.140.14.14"
DNS2_CONFIG="94.140.15.15"
;;
5) # Custom DNS
echo "push \"dhcp-option DNS $DNS1\"" >> $SERVER_CONFIG_FILE
DNS1_CONFIG="$DNS1"
if [[ $DNS2 != "" ]]; then
echo "push \"dhcp-option DNS $DNS2\"" >> $SERVER_CONFIG_FILE
DNS2_CONFIG="$DNS2"
fi
;;
esac
echo 'push "redirect-gateway def1 bypass-dhcp"' >> $SERVER_CONFIG_FILE
# IPv6 network settings if needed
if [[ $IPV6_SUPPORT == 'y' ]]; then
echo 'server-ipv6 fd42:42:42:42::/112
tun-ipv6
push tun-ipv6
push "route-ipv6 2000::/3"
push "redirect-gateway ipv6"' >> $SERVER_CONFIG_FILE
fi
if [[ $COMPRESSION_ENABLED == "y" ]]; then
echo "compress $COMPRESSION_ALG" >> $SERVER_CONFIG_FILE
fi
if [[ $DH_TYPE == "1" ]]; then
echo "dh none" >> $SERVER_CONFIG_FILE
echo "ecdh-curve $DH_CURVE" >> $SERVER_CONFIG_FILE
elif [[ $DH_TYPE == "2" ]]; then
echo "dh /etc/openvpn/dh.pem" >> $SERVER_CONFIG_FILE
fi
case $TLS_SIG in
1)
echo "tls-crypt /etc/openvpn/tls-crypt.key" >> $SERVER_CONFIG_FILE
;;
2)
echo "tls-auth /etc/openvpn/tls-auth.key 0" >> $SERVER_CONFIG_FILE
;;
esac
echo "crl-verify /etc/openvpn/crl.pem
ca /etc/openvpn/ca.crt
cert /etc/openvpn/$SERVER_NAME.crt
key /etc/openvpn/$SERVER_NAME.key
auth $HMAC_ALG
cipher $CIPHER
data-ciphers $CIPHER
tls-server
tls-version-min 1.2
tls-cipher $CC_CIPHER
client-config-dir /etc/openvpn/ccd
status /var/log/openvpn/status.log
script-security 2
client-connect /etc/openvpn/userControl.sh
verb 3" >> $SERVER_CONFIG_FILE
# Create client-config-dir dir
mkdir -p /etc/openvpn/ccd
# Create log dir
mkdir -p /var/log/openvpn
# Make cron job
(crontab -l | grep -F "$CRON_JOB") &> /dev/null
if [ $? -ne 0 ]; then
(crontab -l; echo "$CRON_JOB") | crontab -
echo "Cron job added: $CRON_JOB"
else
echo "Cron job already exists: $CRON_JOB"
fi
# Create usercontrol script
if [ ! -f "$USERCONTROL_SCRIPT" ]; then
cat << 'EOF' > "$USERCONTROL_SCRIPT"
#!/bin/bash
COMMON_NAME="${common_name}"
JSON_FILE="/usr/local/etc/eXtremePanel/database/eXtremePanel.json"
ACTIVE=$(jq -r --arg user "$COMMON_NAME" '.users[$user].active' "$JSON_FILE")
if [ "$ACTIVE" == "true" ]; then
exit 0
else
exit 1
fi
EOF
chmod +wrx "$USERCONTROL_SCRIPT"
fi
# Make vpn usage tracker
if [ ! -f "$PYTHON_VPNUSAGE_FILE" ]; then
cat << 'EOF' > "$PYTHON_VPNUSAGE_FILE"
import json
import os
import logging
DATABASE_JSON_FILE = "/usr/local/etc/eXtremePanel/database/eXtremePanel.json"
STATUS_LOG = "/var/log/openvpn/status.log"
logging.basicConfig(filename='/var/log/vpn_usage_tracker.log', level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
def load_data():
"""Load existing data from the JSON file."""
if os.path.exists(DATABASE_JSON_FILE):
with open(DATABASE_JSON_FILE, 'r') as file:
return json.load(file)
return {}
def save_data(data):