From 9d1209ee90f964aec0e294e25d718d2a1cb35188 Mon Sep 17 00:00:00 2001
From: removedporn <86824510+removedporn@users.noreply.github.com>
Date: Mon, 2 Aug 2021 06:24:06 +0800
Subject: [PATCH] Delete openvpn-install.sh
---
openvpn-install.sh | 1344 --------------------------------------------
1 file changed, 1344 deletions(-)
delete mode 100755 openvpn-install.sh
diff --git a/openvpn-install.sh b/openvpn-install.sh
deleted file mode 100755
index 3527ed0..0000000
--- a/openvpn-install.sh
+++ /dev/null
@@ -1,1344 +0,0 @@
-#!/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 and Rocky Linux.
-# https://github.com/angristan/openvpn-install
-
-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" ]]; then
- OS="centos"
- if [[ ! $VERSION_ID =~ (7|8) ]]; 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 "Sorry, you need to run this as root"
- exit 1
- fi
- if ! tunAvailable; then
- echo "TUN is not available"
- exit 1
- fi
- checkOS
-}
-
-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 [[ $IPV6_SUPPORT == 'y' ]]; then
- echo 'interface: fd42:42:42:42::1
-access-control: fd42:42:42:42::/112 allow' >>/etc/unbound/openvpn.conf
- fi
- fi
-
- systemctl enable unbound
- systemctl restart unbound
-}
-
-function installQuestions() {
- echo "Welcome to the OpenVPN installer!"
- echo "The git repository is available at: https://github.com/angristan/openvpn-install"
- echo ""
-
- echo "I need to ask you a few questions before starting the setup."
- echo "You can leave the default options and just press enter if you are ok with them."
- echo ""
- echo "I need to know the IPv4 address of the network interface you want OpenVPN listening to."
- echo "Unless your server is behind NAT, it should be your public IPv4 address."
-
- # Detect public IPv4 address and pre-fill for the user
- IP=$(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 " 3) Random [49152-65535]"
- until [[ $PORT_CHOICE =~ ^[1-3]$ ]]; do
- read -rp "Port choice [1-3]: " -e -i 1 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 1194 PORT
- done
- ;;
- 3)
- # Generate random number within private ports range
- PORT=$(shuf -i49152-65535 -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 " 1) UDP"
- echo " 2) TCP"
- until [[ $PROTOCOL_CHOICE =~ ^[1-2]$ ]]; do
- read -rp "Protocol [1-2]: " -e -i 1 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) Self-hosted DNS Resolver (Unbound)"
- echo " 3) Cloudflare (Anycast: worldwide)"
- echo " 4) Quad9 (Anycast: worldwide)"
- echo " 5) Quad9 uncensored (Anycast: worldwide)"
- echo " 6) FDN (France)"
- echo " 7) DNS.WATCH (Germany)"
- echo " 8) OpenDNS (Anycast: worldwide)"
- echo " 9) Google (Anycast: worldwide)"
- echo " 10) Yandex Basic (Russia)"
- echo " 11) AdGuard DNS (Anycast: worldwide)"
- echo " 12) NextDNS (Anycast: worldwide)"
- echo " 13) Custom"
- until [[ $DNS =~ ^[0-9]+$ ]] && [ "$DNS" -ge 1 ] && [ "$DNS" -le 13 ]; do
- read -rp "DNS [1-12]: " -e -i 11 DNS
- if [[ $DNS == 2 ]] && [[ -e /etc/unbound/unbound.conf ]]; then
- echo ""
- echo "Unbound is already installed."
- echo "You can allow the script to configure it in order to use it from your OpenVPN clients"
- echo "We will simply add a second server to /etc/unbound/unbound.conf for the OpenVPN subnet."
- echo "No changes are made to the current configuration."
- echo ""
-
- until [[ $CONTINUE =~ (y|n) ]]; do
- read -rp "Apply configuration changes to Unbound? [y/n]: " -e CONTINUE
- done
- if [[ $CONTINUE == "n" ]]; then
- # Break the loop and cleanup
- unset DNS
- unset CONTINUE
- fi
- elif [[ $DNS == "13" ]]; 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 make 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 " 1) tls-crypt (recommended)"
- 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 [[ $IPV6_SUPPORT == "y" ]]; then
- PUBLIC_IP=$(curl https://ifconfig.co)
- else
- PUBLIC_IP=$(curl -4 https://ifconfig.co)
- fi
- ENDPOINT=${ENDPOINT:-$PUBLIC_IP}
- fi
-
- # Run setup questions first, and set other variales if auto-install
- installQuestions
-
- # Get the "public" interface from the default route
- NIC=$(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 /etc/openvpn/server.conf ]]; 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-*'
- yum install -y openvpn iptables openssl wget ca-certificates curl tar 'policycoreutils-python*'
- 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 [[ $OS == 'arch' ]]; then
- # Install required dependencies and upgrade the system
- pacman --needed --noconfirm -Syu openvpn iptables openssl wget ca-certificates curl
- fi
- # An old version of easy-rsa was available by default in some openvpn packages
- if [[ -d /etc/openvpn/easy-rsa/ ]]; then
- rm -rf /etc/openvpn/easy-rsa/
- fi
- fi
-
- # Find out if the machine uses nogroup or nobody for the permissionless group
- if grep -qs "^nogroup:" /etc/group; then
- NOGROUP=nogroup
- else
- NOGROUP=nobody
- fi
-
- # Install the latest version of easy-rsa from source, if not already installed.
- if [[ ! -d /etc/openvpn/easy-rsa/ ]]; then
- local version="3.0.7"
- wget -O ~/easy-rsa.tgz https://github.com/OpenVPN/easy-rsa/releases/download/v${version}/EasyRSA-${version}.tgz
- mkdir -p /etc/openvpn/easy-rsa
- tar xzf ~/easy-rsa.tgz --strip-components=1 --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
-
- echo "set_var EASYRSA_REQ_CN $SERVER_CN" >>vars
-
- # Create the PKI, set up the CA, the DH params and the server certificate
- ./easyrsa init-pki
- ./easyrsa --batch 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 $DH_KEY_SIZE
- fi
-
- ./easyrsa build-server-full "$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" >/etc/openvpn/server.conf
- if [[ $IPV6_SUPPORT == 'n' ]]; then
- echo "proto $PROTOCOL" >>/etc/openvpn/server.conf
- elif [[ $IPV6_SUPPORT == 'y' ]]; then
- echo "proto ${PROTOCOL}6" >>/etc/openvpn/server.conf
- 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" >>/etc/openvpn/server.conf
-
- # 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\"" >>/etc/openvpn/server.conf
- fi
- done
- ;;
- 2) # Self-hosted DNS resolver (Unbound)
- echo 'push "dhcp-option DNS 10.8.0.1"' >>/etc/openvpn/server.conf
- if [[ $IPV6_SUPPORT == 'y' ]]; then
- echo 'push "dhcp-option DNS fd42:42:42:42::1"' >>/etc/openvpn/server.conf
- fi
- ;;
- 3) # Cloudflare
- echo 'push "dhcp-option DNS 1.0.0.1"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 1.1.1.1"' >>/etc/openvpn/server.conf
- ;;
- 4) # Quad9
- echo 'push "dhcp-option DNS 9.9.9.9"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 149.112.112.112"' >>/etc/openvpn/server.conf
- ;;
- 5) # Quad9 uncensored
- echo 'push "dhcp-option DNS 9.9.9.10"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 149.112.112.10"' >>/etc/openvpn/server.conf
- ;;
- 6) # FDN
- echo 'push "dhcp-option DNS 80.67.169.40"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 80.67.169.12"' >>/etc/openvpn/server.conf
- ;;
- 7) # DNS.WATCH
- echo 'push "dhcp-option DNS 84.200.69.80"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 84.200.70.40"' >>/etc/openvpn/server.conf
- ;;
- 8) # OpenDNS
- echo 'push "dhcp-option DNS 208.67.222.222"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 208.67.220.220"' >>/etc/openvpn/server.conf
- ;;
- 9) # Google
- echo 'push "dhcp-option DNS 8.8.8.8"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 8.8.4.4"' >>/etc/openvpn/server.conf
- ;;
- 10) # Yandex Basic
- echo 'push "dhcp-option DNS 77.88.8.8"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 77.88.8.1"' >>/etc/openvpn/server.conf
- ;;
- 11) # AdGuard DNS
- echo 'push "dhcp-option DNS 94.140.14.14"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 94.140.15.15"' >>/etc/openvpn/server.conf
- ;;
- 12) # NextDNS
- echo 'push "dhcp-option DNS 45.90.28.167"' >>/etc/openvpn/server.conf
- echo 'push "dhcp-option DNS 45.90.30.167"' >>/etc/openvpn/server.conf
- ;;
- 13) # Custom DNS
- echo "push \"dhcp-option DNS $DNS1\"" >>/etc/openvpn/server.conf
- if [[ $DNS2 != "" ]]; then
- echo "push \"dhcp-option DNS $DNS2\"" >>/etc/openvpn/server.conf
- fi
- ;;
- esac
- echo 'push "redirect-gateway def1 bypass-dhcp"' >>/etc/openvpn/server.conf
-
- # 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"' >>/etc/openvpn/server.conf
- fi
-
- if [[ $COMPRESSION_ENABLED == "y" ]]; then
- echo "compress $COMPRESSION_ALG" >>/etc/openvpn/server.conf
- fi
-
- if [[ $DH_TYPE == "1" ]]; then
- echo "dh none" >>/etc/openvpn/server.conf
- echo "ecdh-curve $DH_CURVE" >>/etc/openvpn/server.conf
- elif [[ $DH_TYPE == "2" ]]; then
- echo "dh dh.pem" >>/etc/openvpn/server.conf
- fi
-
- case $TLS_SIG in
- 1)
- echo "tls-crypt tls-crypt.key" >>/etc/openvpn/server.conf
- ;;
- 2)
- echo "tls-auth tls-auth.key 0" >>/etc/openvpn/server.conf
- ;;
- esac
-
- echo "crl-verify crl.pem
-ca ca.crt
-cert $SERVER_NAME.crt
-key $SERVER_NAME.key
-auth $HMAC_ALG
-cipher $CIPHER
-ncp-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
-verb 3" >>/etc/openvpn/server.conf
-
- # Create client-config-dir dir
- mkdir -p /etc/openvpn/ccd
- # Create log dir
- mkdir -p /var/log/openvpn
-
- # Enable routing
- echo 'net.ipv4.ip_forward=1' >/etc/sysctl.d/99-openvpn.conf
- if [[ $IPV6_SUPPORT == 'y' ]]; then
- echo 'net.ipv6.conf.all.forwarding=1' >>/etc/sysctl.d/99-openvpn.conf
- fi
- # Apply sysctl rules
- sysctl --system
-
- # If SELinux is enabled and a custom port was selected, we need this
- if hash sestatus 2>/dev/null; then
- if sestatus | grep "Current mode" | grep -qs "enforcing"; then
- if [[ $PORT != '1194' ]]; then
- semanage port -a -t openvpn_port_t -p "$PROTOCOL" "$PORT"
- fi
- fi
- fi
-
- # Finally, restart and enable OpenVPN
- if [[ $OS == 'arch' || $OS == 'fedora' || $OS == 'centos' || $OS == 'oracle' ]]; then
- # Don't modify package-provided service
- cp /usr/lib/systemd/system/openvpn-server@.service /etc/systemd/system/openvpn-server@.service
-
- # Workaround to fix OpenVPN service on OpenVZ
- sed -i 's|LimitNPROC|#LimitNPROC|' /etc/systemd/system/openvpn-server@.service
- # Another workaround to keep using /etc/openvpn/
- sed -i 's|/etc/openvpn/server|/etc/openvpn|' /etc/systemd/system/openvpn-server@.service
- # On fedora, the service hardcodes the ciphers. We want to manage the cipher ourselves, so we remove it from the service
- if [[ $OS == "fedora" ]]; then
- sed -i 's|--cipher AES-256-GCM --ncp-ciphers AES-256-GCM:AES-128-GCM:AES-256-CBC:AES-128-CBC:BF-CBC||' /etc/systemd/system/openvpn-server@.service
- fi
-
- systemctl daemon-reload
- systemctl enable openvpn-server@server
- systemctl restart openvpn-server@server
- elif [[ $OS == "ubuntu" ]] && [[ $VERSION_ID == "16.04" ]]; then
- # On Ubuntu 16.04, we use the package from the OpenVPN repo
- # This package uses a sysvinit service
- systemctl enable openvpn
- systemctl start openvpn
- else
- # Don't modify package-provided service
- cp /lib/systemd/system/openvpn\@.service /etc/systemd/system/openvpn\@.service
-
- # Workaround to fix OpenVPN service on OpenVZ
- sed -i 's|LimitNPROC|#LimitNPROC|' /etc/systemd/system/openvpn\@.service
- # Another workaround to keep using /etc/openvpn/
- sed -i 's|/etc/openvpn/server|/etc/openvpn|' /etc/systemd/system/openvpn\@.service
-
- systemctl daemon-reload
- systemctl enable openvpn@server
- systemctl restart openvpn@server
- fi
-
- if [[ $DNS == 2 ]]; then
- installUnbound
- fi
-
- # Add iptables rules in two scripts
- mkdir -p /etc/iptables
-
- # Script to add rules
- echo "#!/bin/sh
-iptables -t nat -I POSTROUTING 1 -s 10.8.0.0/24 -o $NIC -j MASQUERADE
-iptables -I INPUT 1 -i tun0 -j ACCEPT
-iptables -I FORWARD 1 -i $NIC -o tun0 -j ACCEPT
-iptables -I FORWARD 1 -i tun0 -o $NIC -j ACCEPT
-iptables -I INPUT 1 -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" >/etc/iptables/add-openvpn-rules.sh
-
- if [[ $IPV6_SUPPORT == 'y' ]]; then
- echo "ip6tables -t nat -I POSTROUTING 1 -s fd42:42:42:42::/112 -o $NIC -j MASQUERADE
-ip6tables -I INPUT 1 -i tun0 -j ACCEPT
-ip6tables -I FORWARD 1 -i $NIC -o tun0 -j ACCEPT
-ip6tables -I FORWARD 1 -i tun0 -o $NIC -j ACCEPT
-ip6tables -I INPUT 1 -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" >>/etc/iptables/add-openvpn-rules.sh
- fi
-
- # Script to remove rules
- echo "#!/bin/sh
-iptables -t nat -D POSTROUTING -s 10.8.0.0/24 -o $NIC -j MASQUERADE
-iptables -D INPUT -i tun0 -j ACCEPT
-iptables -D FORWARD -i $NIC -o tun0 -j ACCEPT
-iptables -D FORWARD -i tun0 -o $NIC -j ACCEPT
-iptables -D INPUT -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" >/etc/iptables/rm-openvpn-rules.sh
-
- if [[ $IPV6_SUPPORT == 'y' ]]; then
- echo "ip6tables -t nat -D POSTROUTING -s fd42:42:42:42::/112 -o $NIC -j MASQUERADE
-ip6tables -D INPUT -i tun0 -j ACCEPT
-ip6tables -D FORWARD -i $NIC -o tun0 -j ACCEPT
-ip6tables -D FORWARD -i tun0 -o $NIC -j ACCEPT
-ip6tables -D INPUT -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" >>/etc/iptables/rm-openvpn-rules.sh
- fi
-
- chmod +x /etc/iptables/add-openvpn-rules.sh
- chmod +x /etc/iptables/rm-openvpn-rules.sh
-
- # Handle the rules via a systemd script
- echo "[Unit]
-Description=iptables rules for OpenVPN
-Before=network-online.target
-Wants=network-online.target
-
-[Service]
-Type=oneshot
-ExecStart=/etc/iptables/add-openvpn-rules.sh
-ExecStop=/etc/iptables/rm-openvpn-rules.sh
-RemainAfterExit=yes
-
-[Install]
-WantedBy=multi-user.target" >/etc/systemd/system/iptables-openvpn.service
-
- # Enable service and apply rules
- systemctl daemon-reload
- systemctl enable iptables-openvpn
- systemctl start iptables-openvpn
-
- # If the server is behind a NAT, use the correct IP address for the clients to connect to
- if [[ $ENDPOINT != "" ]]; then
- IP=$ENDPOINT
- fi
-
- # client-template.txt is created so we have a template to add further users later
- echo "client" >/etc/openvpn/client-template.txt
- if [[ $PROTOCOL == 'udp' ]]; then
- echo "proto udp" >>/etc/openvpn/client-template.txt
- echo "explicit-exit-notify" >>/etc/openvpn/client-template.txt
- elif [[ $PROTOCOL == 'tcp' ]]; then
- echo "proto tcp-client" >>/etc/openvpn/client-template.txt
- fi
- echo "remote $IP $PORT
-dev tun
-resolv-retry infinite
-nobind
-persist-key
-persist-tun
-remote-cert-tls server
-verify-x509-name $SERVER_NAME name
-auth $HMAC_ALG
-auth-nocache
-cipher $CIPHER
-tls-client
-tls-version-min 1.2
-tls-cipher $CC_CIPHER
-ignore-unknown-option block-outside-dns
-setenv opt block-outside-dns # Prevent Windows 10 DNS leak
-verb 3" >>/etc/openvpn/client-template.txt
-
- if [[ $COMPRESSION_ENABLED == "y" ]]; then
- echo "compress $COMPRESSION_ALG" >>/etc/openvpn/client-template.txt
- fi
-
- # Generate the custom client.ovpn
- newClient
- echo "If you want to add more clients, you simply need to run this script another time!"
-}
-
-function newClient() {
- echo ""
- echo "Tell me a name for the client."
- echo "The name must consist of alphanumeric character. It may also include an underscore or a dash."
-
- until [[ $CLIENT =~ ^[a-zA-Z0-9_-]+$ ]]; do
- read -rp "Client name: " -e CLIENT
- done
-
- echo ""
- echo "Do you want to protect the configuration file with a password?"
- echo "(e.g. encrypt the private key with a password)"
- echo " 1) Add a passwordless client"
- echo " 2) Use a password for the client"
-
- until [[ $PASS =~ ^[1-2]$ ]]; do
- read -rp "Select an option [1-2]: " -e -i 1 PASS
- done
-
- CLIENTEXISTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c -E "/CN=$CLIENT\$")
- if [[ $CLIENTEXISTS == '1' ]]; then
- echo ""
- echo "The specified client CN was already found in easy-rsa, please choose another name."
- exit
- else
- cd /etc/openvpn/easy-rsa/ || return
- case $PASS in
- 1)
- ./easyrsa build-client-full "$CLIENT" nopass
- ;;
- 2)
- echo "⚠️ You will be asked for the client password below ⚠️"
- ./easyrsa build-client-full "$CLIENT"
- ;;
- esac
- echo "Client $CLIENT added."
- fi
-
- # Home directory of the user, where the client configuration will be written
- if [ -e "/home/${CLIENT}" ]; then
- # if $1 is a user name
- homeDir="/home/${CLIENT}"
- elif [ "${SUDO_USER}" ]; then
- # if not, use SUDO_USER
- if [ "${SUDO_USER}" == "root" ]; then
- # If running sudo as root
- homeDir="/root"
- else
- homeDir="/home/${SUDO_USER}"
- fi
- else
- # if not SUDO_USER, use /root
- homeDir="/root"
- fi
-
- # Determine if we use tls-auth or tls-crypt
- if grep -qs "^tls-crypt" /etc/openvpn/server.conf; then
- TLS_SIG="1"
- elif grep -qs "^tls-auth" /etc/openvpn/server.conf; then
- TLS_SIG="2"
- fi
-
- # Generates the custom client.ovpn
- cp /etc/openvpn/client-template.txt "$homeDir/$CLIENT.ovpn"
- {
- echo ""
- cat "/etc/openvpn/easy-rsa/pki/ca.crt"
- echo ""
-
- echo ""
- awk '/BEGIN/,/END/' "/etc/openvpn/easy-rsa/pki/issued/$CLIENT.crt"
- echo ""
-
- echo ""
- cat "/etc/openvpn/easy-rsa/pki/private/$CLIENT.key"
- echo ""
-
- case $TLS_SIG in
- 1)
- echo ""
- cat /etc/openvpn/tls-crypt.key
- echo ""
- ;;
- 2)
- echo "key-direction 1"
- echo ""
- cat /etc/openvpn/tls-auth.key
- echo ""
- ;;
- esac
- } >>"$homeDir/$CLIENT.ovpn"
-
- echo ""
- echo "The configuration file has been written to $homeDir/$CLIENT.ovpn."
- echo "Download the .ovpn file and import it in your OpenVPN client."
-
- exit 0
-}
-
-function revokeClient() {
- NUMBEROFCLIENTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c "^V")
- if [[ $NUMBEROFCLIENTS == '0' ]]; then
- echo ""
- echo "You have no existing clients!"
- exit 1
- fi
-
- echo ""
- echo "Select the existing client certificate you want to revoke"
- tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
- until [[ $CLIENTNUMBER -ge 1 && $CLIENTNUMBER -le $NUMBEROFCLIENTS ]]; do
- if [[ $CLIENTNUMBER == '1' ]]; then
- read -rp "Select one client [1]: " CLIENTNUMBER
- else
- read -rp "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
- fi
- done
- CLIENT=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | sed -n "$CLIENTNUMBER"p)
- cd /etc/openvpn/easy-rsa/ || return
- ./easyrsa --batch revoke "$CLIENT"
- EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
- rm -f /etc/openvpn/crl.pem
- cp /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn/crl.pem
- chmod 644 /etc/openvpn/crl.pem
- find /home/ -maxdepth 2 -name "$CLIENT.ovpn" -delete
- rm -f "/root/$CLIENT.ovpn"
- sed -i "/^$CLIENT,.*/d" /etc/openvpn/ipp.txt
-
- echo ""
- echo "Certificate for client $CLIENT revoked."
-}
-
-function removeUnbound() {
- # Remove OpenVPN-related config
- sed -i '/include: \/etc\/unbound\/openvpn.conf/d' /etc/unbound/unbound.conf
- rm /etc/unbound/openvpn.conf
-
- until [[ $REMOVE_UNBOUND =~ (y|n) ]]; do
- echo ""
- echo "If you were already using Unbound before installing OpenVPN, I removed the configuration related to OpenVPN."
- read -rp "Do you want to completely remove Unbound? [y/n]: " -e REMOVE_UNBOUND
- done
-
- if [[ $REMOVE_UNBOUND == 'y' ]]; then
- # Stop Unbound
- systemctl stop unbound
-
- if [[ $OS =~ (debian|ubuntu) ]]; then
- apt-get remove --purge -y unbound
- elif [[ $OS == 'arch' ]]; then
- pacman --noconfirm -R unbound
- elif [[ $OS =~ (centos|amzn|oracle) ]]; then
- yum remove -y unbound
- elif [[ $OS == 'fedora' ]]; then
- dnf remove -y unbound
- fi
-
- rm -rf /etc/unbound/
-
- echo ""
- echo "Unbound removed!"
- else
- systemctl restart unbound
- echo ""
- echo "Unbound wasn't removed."
- fi
-}
-
-function removeOpenVPN() {
- echo ""
- read -rp "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
- if [[ $REMOVE == 'y' ]]; then
- # Get OpenVPN port from the configuration
- PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
- PROTOCOL=$(grep '^proto ' /etc/openvpn/server.conf | cut -d " " -f 2)
-
- # Stop OpenVPN
- if [[ $OS =~ (fedora|arch|centos|oracle) ]]; then
- systemctl disable openvpn-server@server
- systemctl stop openvpn-server@server
- # Remove customised service
- rm /etc/systemd/system/openvpn-server@.service
- elif [[ $OS == "ubuntu" ]] && [[ $VERSION_ID == "16.04" ]]; then
- systemctl disable openvpn
- systemctl stop openvpn
- else
- systemctl disable openvpn@server
- systemctl stop openvpn@server
- # Remove customised service
- rm /etc/systemd/system/openvpn\@.service
- fi
-
- # Remove the iptables rules related to the script
- systemctl stop iptables-openvpn
- # Cleanup
- systemctl disable iptables-openvpn
- rm /etc/systemd/system/iptables-openvpn.service
- systemctl daemon-reload
- rm /etc/iptables/add-openvpn-rules.sh
- rm /etc/iptables/rm-openvpn-rules.sh
-
- # SELinux
- if hash sestatus 2>/dev/null; then
- if sestatus | grep "Current mode" | grep -qs "enforcing"; then
- if [[ $PORT != '1194' ]]; then
- semanage port -d -t openvpn_port_t -p "$PROTOCOL" "$PORT"
- fi
- fi
- fi
-
- if [[ $OS =~ (debian|ubuntu) ]]; then
- apt-get remove --purge -y openvpn
- if [[ -e /etc/apt/sources.list.d/openvpn.list ]]; then
- rm /etc/apt/sources.list.d/openvpn.list
- apt-get update
- fi
- elif [[ $OS == 'arch' ]]; then
- pacman --noconfirm -R openvpn
- elif [[ $OS =~ (centos|amzn|oracle) ]]; then
- yum remove -y openvpn
- elif [[ $OS == 'fedora' ]]; then
- dnf remove -y openvpn
- fi
-
- # Cleanup
- find /home/ -maxdepth 2 -name "*.ovpn" -delete
- find /root/ -maxdepth 1 -name "*.ovpn" -delete
- rm -rf /etc/openvpn
- rm -rf /usr/share/doc/openvpn*
- rm -f /etc/sysctl.d/99-openvpn.conf
- rm -rf /var/log/openvpn
-
- # Unbound
- if [[ -e /etc/unbound/openvpn.conf ]]; then
- removeUnbound
- fi
- echo ""
- echo "OpenVPN removed!"
- else
- echo ""
- echo "Removal aborted!"
- fi
-}
-
-function manageMenu() {
- echo "Welcome to OpenVPN-install!"
- echo "The git repository is available at: https://github.com/angristan/openvpn-install"
- echo ""
- echo "It looks like OpenVPN is already installed."
- echo ""
- echo "What do you want to do?"
- echo " 1) Add a new user"
- echo " 2) Revoke existing user"
- echo " 3) Remove OpenVPN"
- echo " 4) Exit"
- until [[ $MENU_OPTION =~ ^[1-4]$ ]]; do
- read -rp "Select an option [1-4]: " MENU_OPTION
- done
-
- case $MENU_OPTION in
- 1)
- newClient
- ;;
- 2)
- revokeClient
- ;;
- 3)
- removeOpenVPN
- ;;
- 4)
- exit 0
- ;;
- esac
-}
-
-# Check for root, TUN, OS...
-initialCheck
-
-# Check if OpenVPN is already installed
-if [[ -e /etc/openvpn/server.conf && $AUTO_INSTALL != "y" ]]; then
- manageMenu
-else
- installOpenVPN
-fi