From ecd8dc7aec925ffea73e5b41c2e02d70b522dc07 Mon Sep 17 00:00:00 2001
From: removedporn <86824510+removedporn@users.noreply.github.com>
Date: Mon, 2 Aug 2021 06:11:35 +0800
Subject: [PATCH] Delete openvpn-install.sh
---
openvpn-install.sh | 559 ---------------------------------------------
1 file changed, 559 deletions(-)
delete mode 100644 openvpn-install.sh
diff --git a/openvpn-install.sh b/openvpn-install.sh
deleted file mode 100644
index 4df5783..0000000
--- a/openvpn-install.sh
+++ /dev/null
@@ -1,559 +0,0 @@
-#!/bin/bash
-#
-# https://github.com/Nyr/openvpn-install
-#
-# Copyright (c) 2013 Nyr. Released under the MIT License.
-
-
-# Detect Debian users running the script with "sh" instead of bash
-if readlink /proc/$$/exe | grep -q "dash"; then
- echo 'This installer needs to be run with "bash", not "sh".'
- exit
-fi
-
-# Discard stdin. Needed when running from an one-liner which includes a newline
-read -N 999999 -t 0.001
-
-# Detect OpenVZ 6
-if [[ $(uname -r | cut -d "." -f 1) -eq 2 ]]; then
- echo "The system is running an old kernel, which is incompatible with this installer."
- exit
-fi
-
-# Detect OS
-# $os_version variables aren't always in use, but are kept here for convenience
-if grep -qs "ubuntu" /etc/os-release; then
- os="ubuntu"
- os_version=$(grep 'VERSION_ID' /etc/os-release | cut -d '"' -f 2 | tr -d '.')
- group_name="nogroup"
-elif [[ -e /etc/debian_version ]]; then
- os="debian"
- os_version=$(grep -oE '[0-9]+' /etc/debian_version | head -1)
- group_name="nogroup"
-elif [[ -e /etc/centos-release ]]; then
- os="centos"
- os_version=$(grep -oE '[0-9]+' /etc/centos-release | head -1)
- group_name="nobody"
-elif [[ -e /etc/fedora-release ]]; then
- os="fedora"
- os_version=$(grep -oE '[0-9]+' /etc/fedora-release | head -1)
- group_name="nobody"
-else
- echo "This installer seems to be running on an unsupported distribution.
-Supported distributions are Ubuntu, Debian, CentOS, and Fedora."
- exit
-fi
-
-if [[ "$os" == "ubuntu" && "$os_version" -lt 1804 ]]; then
- echo "Ubuntu 18.04 or higher is required to use this installer.
-This version of Ubuntu is too old and unsupported."
- exit
-fi
-
-if [[ "$os" == "debian" && "$os_version" -lt 9 ]]; then
- echo "Debian 9 or higher is required to use this installer.
-This version of Debian is too old and unsupported."
- exit
-fi
-
-if [[ "$os" == "centos" && "$os_version" -lt 7 ]]; then
- echo "CentOS 7 or higher is required to use this installer.
-This version of CentOS is too old and unsupported."
- exit
-fi
-
-# Detect environments where $PATH does not include the sbin directories
-if ! grep -q sbin <<< "$PATH"; then
- echo '$PATH does not include sbin. Try using "su -" instead of "su".'
- exit
-fi
-
-if [[ "$EUID" -ne 0 ]]; then
- echo "This installer needs to be run with superuser privileges."
- exit
-fi
-
-if [[ ! -e /dev/net/tun ]] || ! ( exec 7<>/dev/net/tun ) 2>/dev/null; then
- echo "The system does not have the TUN device available.
-TUN needs to be enabled before running this installer."
- exit
-fi
-
-new_client () {
- # Generates the custom client.ovpn
- {
- cat /etc/openvpn/server/client-common.txt
- echo ""
- cat /etc/openvpn/server/easy-rsa/pki/ca.crt
- echo ""
- echo ""
- sed -ne '/BEGIN CERTIFICATE/,$ p' /etc/openvpn/server/easy-rsa/pki/issued/"$client".crt
- echo ""
- echo ""
- cat /etc/openvpn/server/easy-rsa/pki/private/"$client".key
- echo ""
- echo ""
- sed -ne '/BEGIN OpenVPN Static key/,$ p' /etc/openvpn/server/tc.key
- echo ""
- } > ~/"$client".ovpn
-}
-
-if [[ ! -e /etc/openvpn/server/server.conf ]]; then
- clear
- echo 'Welcome to this OpenVPN road warrior installer!'
- # If system has a single IPv4, it is selected automatically. Else, ask the user
- if [[ $(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}') -eq 1 ]]; then
- ip=$(ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}')
- else
- number_of_ip=$(ip -4 addr | grep inet | grep -vEc '127(\.[0-9]{1,3}){3}')
- echo
- echo "Which IPv4 address should be used?"
- ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | nl -s ') '
- read -p "IPv4 address [1]: " ip_number
- until [[ -z "$ip_number" || "$ip_number" =~ ^[0-9]+$ && "$ip_number" -le "$number_of_ip" ]]; do
- echo "$ip_number: invalid selection."
- read -p "IPv4 address [1]: " ip_number
- done
- [[ -z "$ip_number" ]] && ip_number="1"
- ip=$(ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | sed -n "$ip_number"p)
- fi
- # If $ip is a private IP address, the server must be behind NAT
- if echo "$ip" | grep -qE '^(10\.|172\.1[6789]\.|172\.2[0-9]\.|172\.3[01]\.|192\.168)'; then
- echo
- echo "This server is behind NAT. What is the public IPv4 address or hostname?"
- # Get public IP and sanitize with grep
- get_public_ip=$(grep -m 1 -oE '^[0-9]{1,3}(\.[0-9]{1,3}){3}$' <<< "$(wget -T 10 -t 1 -4qO- "http://ip1.dynupdate.no-ip.com/" || curl -m 10 -4Ls "http://ip1.dynupdate.no-ip.com/")")
- read -p "Public IPv4 address / hostname [$get_public_ip]: " public_ip
- # If the checkip service is unavailable and user didn't provide input, ask again
- until [[ -n "$get_public_ip" || -n "$public_ip" ]]; do
- echo "Invalid input."
- read -p "Public IPv4 address / hostname: " public_ip
- done
- [[ -z "$public_ip" ]] && public_ip="$get_public_ip"
- fi
- # If system has a single IPv6, it is selected automatically
- if [[ $(ip -6 addr | grep -c 'inet6 [23]') -eq 1 ]]; then
- ip6=$(ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}')
- fi
- # If system has multiple IPv6, ask the user to select one
- if [[ $(ip -6 addr | grep -c 'inet6 [23]') -gt 1 ]]; then
- number_of_ip6=$(ip -6 addr | grep -c 'inet6 [23]')
- echo
- echo "Which IPv6 address should be used?"
- ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}' | nl -s ') '
- read -p "IPv6 address [1]: " ip6_number
- until [[ -z "$ip6_number" || "$ip6_number" =~ ^[0-9]+$ && "$ip6_number" -le "$number_of_ip6" ]]; do
- echo "$ip6_number: invalid selection."
- read -p "IPv6 address [1]: " ip6_number
- done
- [[ -z "$ip6_number" ]] && ip6_number="1"
- ip6=$(ip -6 addr | grep 'inet6 [23]' | cut -d '/' -f 1 | grep -oE '([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}' | sed -n "$ip6_number"p)
- fi
- echo
- echo "Which protocol should OpenVPN use?"
- echo " 1) UDP (recommended)"
- echo " 2) TCP"
- read -p "Protocol [1]: " protocol
- until [[ -z "$protocol" || "$protocol" =~ ^[12]$ ]]; do
- echo "$protocol: invalid selection."
- read -p "Protocol [1]: " protocol
- done
- case "$protocol" in
- 1|"")
- protocol=udp
- ;;
- 2)
- protocol=tcp
- ;;
- esac
- echo
- echo "What port should OpenVPN listen to?"
- read -p "Port [1194]: " port
- until [[ -z "$port" || "$port" =~ ^[0-9]+$ && "$port" -le 65535 ]]; do
- echo "$port: invalid port."
- read -p "Port [1194]: " port
- done
- [[ -z "$port" ]] && port="1194"
- echo
- echo "Select a DNS server for the clients:"
- echo " 1) Current system resolvers"
- echo " 2) Google"
- echo " 3) 1.1.1.1"
- echo " 4) OpenDNS"
- echo " 5) Quad9"
- echo " 6) AdGuard"
- read -p "DNS server [1]: " dns
- until [[ -z "$dns" || "$dns" =~ ^[1-6]$ ]]; do
- echo "$dns: invalid selection."
- read -p "DNS server [1]: " dns
- done
- echo
- echo "Enter a name for the first client:"
- read -p "Name [client]: " unsanitized_client
- # Allow a limited set of characters to avoid conflicts
- client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client")
- [[ -z "$client" ]] && client="client"
- echo
- echo "OpenVPN installation is ready to begin."
- # Install a firewall in the rare case where one is not already available
- if ! systemctl is-active --quiet firewalld.service && ! hash iptables 2>/dev/null; then
- if [[ "$os" == "centos" || "$os" == "fedora" ]]; then
- firewall="firewalld"
- # We don't want to silently enable firewalld, so we give a subtle warning
- # If the user continues, firewalld will be installed and enabled during setup
- echo "firewalld, which is required to manage routing tables, will also be installed."
- elif [[ "$os" == "debian" || "$os" == "ubuntu" ]]; then
- # iptables is way less invasive than firewalld so no warning is given
- firewall="iptables"
- fi
- fi
- read -n1 -r -p "Press any key to continue..."
- # If running inside a container, disable LimitNPROC to prevent conflicts
- if systemd-detect-virt -cq; then
- mkdir /etc/systemd/system/openvpn-server@server.service.d/ 2>/dev/null
- echo "[Service]
-LimitNPROC=infinity" > /etc/systemd/system/openvpn-server@server.service.d/disable-limitnproc.conf
- fi
- if [[ "$os" = "debian" || "$os" = "ubuntu" ]]; then
- apt-get update
- apt-get install -y openvpn openssl ca-certificates $firewall
- elif [[ "$os" = "centos" ]]; then
- yum install -y epel-release
- yum install -y openvpn openssl ca-certificates tar $firewall
- else
- # Else, OS must be Fedora
- dnf install -y openvpn openssl ca-certificates tar $firewall
- fi
- # If firewalld was just installed, enable it
- if [[ "$firewall" == "firewalld" ]]; then
- systemctl enable --now firewalld.service
- fi
- # Get easy-rsa
- easy_rsa_url='https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.8/EasyRSA-3.0.8.tgz'
- mkdir -p /etc/openvpn/server/easy-rsa/
- { wget -qO- "$easy_rsa_url" 2>/dev/null || curl -sL "$easy_rsa_url" ; } | tar xz -C /etc/openvpn/server/easy-rsa/ --strip-components 1
- chown -R root:root /etc/openvpn/server/easy-rsa/
- cd /etc/openvpn/server/easy-rsa/
- # Create the PKI, set up the CA and the server and client certificates
- ./easyrsa init-pki
- ./easyrsa --batch build-ca nopass
- EASYRSA_CERT_EXPIRE=3650 ./easyrsa build-server-full server nopass
- EASYRSA_CERT_EXPIRE=3650 ./easyrsa build-client-full "$client" nopass
- EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
- # Move the stuff we need
- cp pki/ca.crt pki/private/ca.key pki/issued/server.crt pki/private/server.key pki/crl.pem /etc/openvpn/server
- # CRL is read with each client connection, while OpenVPN is dropped to nobody
- chown nobody:"$group_name" /etc/openvpn/server/crl.pem
- # Without +x in the directory, OpenVPN can't run a stat() on the CRL file
- chmod o+x /etc/openvpn/server/
- # Generate key for tls-crypt
- openvpn --genkey --secret /etc/openvpn/server/tc.key
- # Create the DH parameters file using the predefined ffdhe2048 group
- echo '-----BEGIN DH PARAMETERS-----
-MIIBCAKCAQEA//////////+t+FRYortKmq/cViAnPTzx2LnFg84tNpWp4TZBFGQz
-+8yTnc4kmz75fS/jY2MMddj2gbICrsRhetPfHtXV/WVhJDP1H18GbtCFY2VVPe0a
-87VXE15/V8k1mE8McODmi3fipona8+/och3xWKE2rec1MKzKT0g6eXq8CrGCsyT7
-YdEIqUuyyOP7uWrat2DX9GgdT0Kj3jlN9K5W7edjcrsZCwenyO4KbXCeAvzhzffi
-7MA0BM0oNC9hkXL+nOmFg/+OTxIy7vKBg8P+OxtMb61zO7X8vC7CIAXFjvGDfRaD
-ssbzSibBsu/6iGtCOGEoXJf//////////wIBAg==
------END DH PARAMETERS-----' > /etc/openvpn/server/dh.pem
- # Generate server.conf
- echo "local $ip
-port $port
-proto $protocol
-dev tun
-ca ca.crt
-cert server.crt
-key server.key
-dh dh.pem
-auth SHA512
-tls-crypt tc.key
-topology subnet
-server 10.8.0.0 255.255.255.0" > /etc/openvpn/server/server.conf
- # IPv6
- if [[ -z "$ip6" ]]; then
- echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server/server.conf
- else
- echo 'server-ipv6 fddd:1194:1194:1194::/64' >> /etc/openvpn/server/server.conf
- echo 'push "redirect-gateway def1 ipv6 bypass-dhcp"' >> /etc/openvpn/server/server.conf
- fi
- echo 'ifconfig-pool-persist ipp.txt' >> /etc/openvpn/server/server.conf
- # DNS
- case "$dns" in
- 1|"")
- # Locate the proper resolv.conf
- # Needed for systems running systemd-resolved
- if grep -q '^nameserver 127.0.0.53' "/etc/resolv.conf"; then
- resolv_conf="/run/systemd/resolve/resolv.conf"
- else
- resolv_conf="/etc/resolv.conf"
- fi
- # Obtain the resolvers from resolv.conf and use them for OpenVPN
- grep -v '^#\|^;' "$resolv_conf" | grep '^nameserver' | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | while read line; do
- echo "push \"dhcp-option DNS $line\"" >> /etc/openvpn/server/server.conf
- done
- ;;
- 2)
- echo 'push "dhcp-option DNS 8.8.8.8"' >> /etc/openvpn/server/server.conf
- echo 'push "dhcp-option DNS 8.8.4.4"' >> /etc/openvpn/server/server.conf
- ;;
- 3)
- echo 'push "dhcp-option DNS 1.1.1.1"' >> /etc/openvpn/server/server.conf
- echo 'push "dhcp-option DNS 1.0.0.1"' >> /etc/openvpn/server/server.conf
- ;;
- 4)
- echo 'push "dhcp-option DNS 208.67.222.222"' >> /etc/openvpn/server/server.conf
- echo 'push "dhcp-option DNS 208.67.220.220"' >> /etc/openvpn/server/server.conf
- ;;
- 5)
- echo 'push "dhcp-option DNS 9.9.9.9"' >> /etc/openvpn/server/server.conf
- echo 'push "dhcp-option DNS 149.112.112.112"' >> /etc/openvpn/server/server.conf
- ;;
- 6)
- echo 'push "dhcp-option DNS 94.140.14.14"' >> /etc/openvpn/server/server.conf
- echo 'push "dhcp-option DNS 94.140.15.15"' >> /etc/openvpn/server/server.conf
- ;;
- esac
- echo "keepalive 10 120
-cipher AES-256-CBC
-user nobody
-group $group_name
-persist-key
-persist-tun
-verb 3
-crl-verify crl.pem" >> /etc/openvpn/server/server.conf
- if [[ "$protocol" = "udp" ]]; then
- echo "explicit-exit-notify" >> /etc/openvpn/server/server.conf
- fi
- # Enable net.ipv4.ip_forward for the system
- echo 'net.ipv4.ip_forward=1' > /etc/sysctl.d/99-openvpn-forward.conf
- # Enable without waiting for a reboot or service restart
- echo 1 > /proc/sys/net/ipv4/ip_forward
- if [[ -n "$ip6" ]]; then
- # Enable net.ipv6.conf.all.forwarding for the system
- echo "net.ipv6.conf.all.forwarding=1" >> /etc/sysctl.d/99-openvpn-forward.conf
- # Enable without waiting for a reboot or service restart
- echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
- fi
- if systemctl is-active --quiet firewalld.service; then
- # Using both permanent and not permanent rules to avoid a firewalld
- # reload.
- # We don't use --add-service=openvpn because that would only work with
- # the default port and protocol.
- firewall-cmd --add-port="$port"/"$protocol"
- firewall-cmd --zone=trusted --add-source=10.8.0.0/24
- firewall-cmd --permanent --add-port="$port"/"$protocol"
- firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
- # Set NAT for the VPN subnet
- firewall-cmd --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
- firewall-cmd --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
- if [[ -n "$ip6" ]]; then
- firewall-cmd --zone=trusted --add-source=fddd:1194:1194:1194::/64
- firewall-cmd --permanent --zone=trusted --add-source=fddd:1194:1194:1194::/64
- firewall-cmd --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to "$ip6"
- firewall-cmd --permanent --direct --add-rule ipv6 nat POSTROUTING 0 -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to "$ip6"
- fi
- else
- # Create a service to set up persistent iptables rules
- iptables_path=$(command -v iptables)
- ip6tables_path=$(command -v ip6tables)
- # nf_tables is not available as standard in OVZ kernels. So use iptables-legacy
- # if we are in OVZ, with a nf_tables backend and iptables-legacy is available.
- if [[ $(systemd-detect-virt) == "openvz" ]] && readlink -f "$(command -v iptables)" | grep -q "nft" && hash iptables-legacy 2>/dev/null; then
- iptables_path=$(command -v iptables-legacy)
- ip6tables_path=$(command -v ip6tables-legacy)
- fi
- echo "[Unit]
-Before=network.target
-[Service]
-Type=oneshot
-ExecStart=$iptables_path -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $ip
-ExecStart=$iptables_path -I INPUT -p $protocol --dport $port -j ACCEPT
-ExecStart=$iptables_path -I FORWARD -s 10.8.0.0/24 -j ACCEPT
-ExecStart=$iptables_path -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-ExecStop=$iptables_path -t nat -D POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $ip
-ExecStop=$iptables_path -D INPUT -p $protocol --dport $port -j ACCEPT
-ExecStop=$iptables_path -D FORWARD -s 10.8.0.0/24 -j ACCEPT
-ExecStop=$iptables_path -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" > /etc/systemd/system/openvpn-iptables.service
- if [[ -n "$ip6" ]]; then
- echo "ExecStart=$ip6tables_path -t nat -A POSTROUTING -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to $ip6
-ExecStart=$ip6tables_path -I FORWARD -s fddd:1194:1194:1194::/64 -j ACCEPT
-ExecStart=$ip6tables_path -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-ExecStop=$ip6tables_path -t nat -D POSTROUTING -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to $ip6
-ExecStop=$ip6tables_path -D FORWARD -s fddd:1194:1194:1194::/64 -j ACCEPT
-ExecStop=$ip6tables_path -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" >> /etc/systemd/system/openvpn-iptables.service
- fi
- echo "RemainAfterExit=yes
-[Install]
-WantedBy=multi-user.target" >> /etc/systemd/system/openvpn-iptables.service
- systemctl enable --now openvpn-iptables.service
- fi
- # If SELinux is enabled and a custom port was selected, we need this
- if sestatus 2>/dev/null | grep "Current mode" | grep -q "enforcing" && [[ "$port" != 1194 ]]; then
- # Install semanage if not already present
- if ! hash semanage 2>/dev/null; then
- if [[ "$os_version" -eq 7 ]]; then
- # Centos 7
- yum install -y policycoreutils-python
- else
- # CentOS 8 or Fedora
- dnf install -y policycoreutils-python-utils
- fi
- fi
- semanage port -a -t openvpn_port_t -p "$protocol" "$port"
- fi
- # If the server is behind NAT, use the correct IP address
- [[ -n "$public_ip" ]] && ip="$public_ip"
- # client-common.txt is created so we have a template to add further users later
- echo "client
-dev tun
-proto $protocol
-remote $ip $port
-resolv-retry infinite
-nobind
-persist-key
-persist-tun
-remote-cert-tls server
-auth SHA512
-cipher AES-256-CBC
-ignore-unknown-option block-outside-dns
-block-outside-dns
-verb 3" > /etc/openvpn/server/client-common.txt
- # Enable and start the OpenVPN service
- systemctl enable --now openvpn-server@server.service
- # Generates the custom client.ovpn
- new_client
- echo
- echo "Finished!"
- echo
- echo "The client configuration is available in:" ~/"$client.ovpn"
- echo "New clients can be added by running this script again."
-else
- clear
- echo "OpenVPN is already installed."
- echo
- echo "Select an option:"
- echo " 1) Add a new client"
- echo " 2) Revoke an existing client"
- echo " 3) Remove OpenVPN"
- echo " 4) Exit"
- read -p "Option: " option
- until [[ "$option" =~ ^[1-4]$ ]]; do
- echo "$option: invalid selection."
- read -p "Option: " option
- done
- case "$option" in
- 1)
- echo
- echo "Provide a name for the client:"
- read -p "Name: " unsanitized_client
- client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client")
- while [[ -z "$client" || -e /etc/openvpn/server/easy-rsa/pki/issued/"$client".crt ]]; do
- echo "$client: invalid name."
- read -p "Name: " unsanitized_client
- client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client")
- done
- cd /etc/openvpn/server/easy-rsa/
- EASYRSA_CERT_EXPIRE=3650 ./easyrsa build-client-full "$client" nopass
- # Generates the custom client.ovpn
- new_client
- echo
- echo "$client added. Configuration available in:" ~/"$client.ovpn"
- exit
- ;;
- 2)
- # This option could be documented a bit better and maybe even be simplified
- # ...but what can I say, I want some sleep too
- number_of_clients=$(tail -n +2 /etc/openvpn/server/easy-rsa/pki/index.txt | grep -c "^V")
- if [[ "$number_of_clients" = 0 ]]; then
- echo
- echo "There are no existing clients!"
- exit
- fi
- echo
- echo "Select the client to revoke:"
- tail -n +2 /etc/openvpn/server/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
- read -p "Client: " client_number
- until [[ "$client_number" =~ ^[0-9]+$ && "$client_number" -le "$number_of_clients" ]]; do
- echo "$client_number: invalid selection."
- read -p "Client: " client_number
- done
- client=$(tail -n +2 /etc/openvpn/server/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | sed -n "$client_number"p)
- echo
- read -p "Confirm $client revocation? [y/N]: " revoke
- until [[ "$revoke" =~ ^[yYnN]*$ ]]; do
- echo "$revoke: invalid selection."
- read -p "Confirm $client revocation? [y/N]: " revoke
- done
- if [[ "$revoke" =~ ^[yY]$ ]]; then
- cd /etc/openvpn/server/easy-rsa/
- ./easyrsa --batch revoke "$client"
- EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
- rm -f /etc/openvpn/server/crl.pem
- cp /etc/openvpn/server/easy-rsa/pki/crl.pem /etc/openvpn/server/crl.pem
- # CRL is read with each client connection, when OpenVPN is dropped to nobody
- chown nobody:"$group_name" /etc/openvpn/server/crl.pem
- echo
- echo "$client revoked!"
- else
- echo
- echo "$client revocation aborted!"
- fi
- exit
- ;;
- 3)
- echo
- read -p "Confirm OpenVPN removal? [y/N]: " remove
- until [[ "$remove" =~ ^[yYnN]*$ ]]; do
- echo "$remove: invalid selection."
- read -p "Confirm OpenVPN removal? [y/N]: " remove
- done
- if [[ "$remove" =~ ^[yY]$ ]]; then
- port=$(grep '^port ' /etc/openvpn/server/server.conf | cut -d " " -f 2)
- protocol=$(grep '^proto ' /etc/openvpn/server/server.conf | cut -d " " -f 2)
- if systemctl is-active --quiet firewalld.service; then
- ip=$(firewall-cmd --direct --get-rules ipv4 nat POSTROUTING | grep '\-s 10.8.0.0/24 '"'"'!'"'"' -d 10.8.0.0/24' | grep -oE '[^ ]+$')
- # Using both permanent and not permanent rules to avoid a firewalld reload.
- firewall-cmd --remove-port="$port"/"$protocol"
- firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
- firewall-cmd --permanent --remove-port="$port"/"$protocol"
- firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
- firewall-cmd --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
- firewall-cmd --permanent --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
- if grep -qs "server-ipv6" /etc/openvpn/server/server.conf; then
- ip6=$(firewall-cmd --direct --get-rules ipv6 nat POSTROUTING | grep '\-s fddd:1194:1194:1194::/64 '"'"'!'"'"' -d fddd:1194:1194:1194::/64' | grep -oE '[^ ]+$')
- firewall-cmd --zone=trusted --remove-source=fddd:1194:1194:1194::/64
- firewall-cmd --permanent --zone=trusted --remove-source=fddd:1194:1194:1194::/64
- firewall-cmd --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to "$ip6"
- firewall-cmd --permanent --direct --remove-rule ipv6 nat POSTROUTING 0 -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to "$ip6"
- fi
- else
- systemctl disable --now openvpn-iptables.service
- rm -f /etc/systemd/system/openvpn-iptables.service
- fi
- if sestatus 2>/dev/null | grep "Current mode" | grep -q "enforcing" && [[ "$port" != 1194 ]]; then
- semanage port -d -t openvpn_port_t -p "$protocol" "$port"
- fi
- systemctl disable --now openvpn-server@server.service
- rm -rf /etc/openvpn/server
- rm -f /etc/systemd/system/openvpn-server@server.service.d/disable-limitnproc.conf
- rm -f /etc/sysctl.d/99-openvpn-forward.conf
- if [[ "$os" = "debian" || "$os" = "ubuntu" ]]; then
- apt-get remove --purge -y openvpn
- else
- # Else, OS must be CentOS or Fedora
- yum remove -y openvpn
- fi
- echo
- echo "OpenVPN removed!"
- else
- echo
- echo "OpenVPN removal aborted!"
- fi
- exit
- ;;
- 4)
- exit
- ;;
- esac
-fi