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https://github.com/Nyr/openvpn-install.git
synced 2024-11-23 21:46:08 +03:00
General cleanup
This commit is contained in:
Nyr
parent
cb28b57e09
commit
ff254aeb1e
@ -1,11 +1,8 @@
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#!/bin/bash
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# OpenVPN road warrior installer for Debian, Ubuntu and CentOS
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# This script will work on Debian, Ubuntu, CentOS and probably other distros
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# of the same families, although no support is offered for them. It isn't
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# bulletproof but it will probably work if you simply want to setup a VPN on
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# your Debian/Ubuntu/CentOS box. It has been designed to be as unobtrusive and
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# universal as possible.
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#
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# https://github.com/Nyr/openvpn-install
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#
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# Copyright (c) 2013 Nyr. Released under the MIT License.
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# Detect Debian users running the script with "sh" instead of bash
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@ -25,10 +22,6 @@ You need to enable TUN before running this script"
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exit 3
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fi
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if grep -qs "CentOS release 5" "/etc/redhat-release"; then
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echo "CentOS 5 is too old and not supported"
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exit 4
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fi
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if [[ -e /etc/debian_version ]]; then
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OS=debian
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GROUPNAME=nogroup
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@ -39,7 +32,7 @@ elif [[ -e /etc/centos-release || -e /etc/redhat-release ]]; then
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RCLOCAL='/etc/rc.d/rc.local'
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else
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echo "Looks like you aren't running this installer on Debian, Ubuntu or CentOS"
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exit 5
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exit 4
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fi
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newclient () {
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@ -63,8 +56,8 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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while :
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do
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clear
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echo "Looks like OpenVPN is already installed"
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echo ""
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echo "Looks like OpenVPN is already installed."
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echo
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echo "What do you want to do?"
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echo " 1) Add a new user"
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echo " 2) Revoke an existing user"
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@ -73,16 +66,16 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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read -p "Select an option [1-4]: " option
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case $option in
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1)
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echo ""
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echo "Tell me a name for the client certificate"
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echo "Please, use one word only, no special characters"
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echo
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echo "Tell me a name for the client certificate."
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echo "Please, use one word only, no special characters."
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read -p "Client name: " -e -i client CLIENT
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cd /etc/openvpn/easy-rsa/
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./easyrsa build-client-full $CLIENT nopass
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# Generates the custom client.ovpn
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newclient "$CLIENT"
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echo ""
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echo "Client $CLIENT added, configuration is available at" ~/"$CLIENT.ovpn"
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echo
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echo "Client $CLIENT added, configuration is available at:" ~/"$CLIENT.ovpn"
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exit
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;;
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2)
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@ -90,12 +83,12 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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# ...but what can I say, I want some sleep too
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NUMBEROFCLIENTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c "^V")
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if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
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echo ""
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echo
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echo "You have no existing clients!"
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exit 6
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exit 5
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fi
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echo ""
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echo "Select the existing client certificate you want to revoke"
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echo
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echo "Select the existing client certificate you want to revoke:"
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tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
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if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
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read -p "Select one client [1]: " CLIENTNUMBER
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@ -113,12 +106,12 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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cp /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn/crl.pem
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# CRL is read with each client connection, when OpenVPN is dropped to nobody
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chown nobody:$GROUPNAME /etc/openvpn/crl.pem
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echo ""
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echo "Certificate for client $CLIENT revoked"
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echo
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echo "Certificate for client $CLIENT revoked!"
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exit
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;;
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3)
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echo ""
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echo
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read -p "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
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if [[ "$REMOVE" = 'y' ]]; then
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PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
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@ -158,10 +151,10 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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yum remove openvpn -y
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fi
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rm -rf /etc/openvpn
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echo ""
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echo
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echo "OpenVPN removed!"
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else
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echo ""
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echo
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echo "Removal aborted!"
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fi
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exit
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@ -171,18 +164,26 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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done
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else
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clear
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echo 'Welcome to this quick OpenVPN "road warrior" installer'
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echo ""
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echo 'Welcome to this OpenVPN "road warrior" installer!'
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echo
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# OpenVPN setup and first user creation
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echo "I need to ask you a few questions before starting the setup"
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echo "You can leave the default options and just press enter if you are ok with them"
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echo ""
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echo "First I need to know the IPv4 address of the network interface you want OpenVPN"
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echo "I need to ask you a few questions before starting the setup."
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echo "You can leave the default options and just press enter if you are ok with them."
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echo
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echo "First, provide the IPv4 address of the network interface you want OpenVPN"
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echo "listening to."
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# Autodetect IP address and pre-fill for the user
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IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
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read -p "IP address: " -e -i $IP IP
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echo ""
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# Try to detect a NATed connection and ask the user about it
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EXTERNALIP=$(wget -4qO- "http://whatismyip.akamai.com/" 2>/dev/null || curl -4s "http://whatismyip.akamai.com/")
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if [[ "$IP" != "$EXTERNALIP" ]]; then
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echo
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echo "If your server is behind NAT, please provide the public IP address or hostname."
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echo "If that's not the case, just ignore this and leave the next field blank."
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read -p "Public IP address / Hostname: " -e PUBLICIP
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fi
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echo
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echo "Which protocol do you want for OpenVPN connections?"
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echo " 1) UDP (recommended)"
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echo " 2) TCP"
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@ -195,10 +196,10 @@ else
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PROTOCOL=tcp
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;;
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esac
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echo ""
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echo
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echo "What port do you want OpenVPN listening to?"
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read -p "Port: " -e -i 1194 PORT
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echo ""
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echo
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echo "Which DNS do you want to use with the VPN?"
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echo " 1) Current system resolvers"
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echo " 2) 1.1.1.1"
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@ -206,12 +207,12 @@ else
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echo " 4) OpenDNS"
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echo " 5) Verisign"
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read -p "DNS [1-5]: " -e -i 1 DNS
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echo ""
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echo "Finally, tell me your name for the client certificate"
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echo "Please, use one word only, no special characters"
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echo
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echo "Finally, tell me your name for the client certificate."
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echo "Please, use one word only, no special characters."
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read -p "Client name: " -e -i client CLIENT
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echo ""
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echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now"
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echo
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echo "Okay, that was all I needed. We are ready to set up your OpenVPN server now."
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read -n1 -r -p "Press any key to continue..."
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if [[ "$OS" = 'debian' ]]; then
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apt-get update
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@ -375,19 +376,10 @@ exit 0' > $RCLOCAL
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chkconfig openvpn on
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fi
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fi
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# Try to detect a NATed connection and ask about it to potential LowEndSpirit users
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EXTERNALIP=$(wget -4qO- "http://whatismyip.akamai.com/" 2>/dev/null || curl -4s "http://whatismyip.akamai.com/")
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if [[ "$IP" != "$EXTERNALIP" ]]; then
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echo ""
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echo "Looks like your server could be behind a NAT!"
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echo ""
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echo "If your server is behind a NAT, I need to know the public IP or hostname"
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echo "If that's not the case, just ignore this and leave the next field blank"
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read -p "Public IP: " -e PUBLICIP
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# If the serrver is behind a NAT, use the correct IP address
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if [[ "$PUBLICIP" != "" ]]; then
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IP=$PUBLICIP
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fi
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fi
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# client-common.txt is created so we have a template to add further users later
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echo "client
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dev tun
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@ -408,9 +400,9 @@ key-direction 1
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verb 3" > /etc/openvpn/client-common.txt
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# Generates the custom client.ovpn
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newclient "$CLIENT"
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echo ""
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echo
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echo "Finished!"
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echo ""
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echo "Your client configuration is available at" ~/"$CLIENT.ovpn"
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echo
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echo "Your client configuration is available at:" ~/"$CLIENT.ovpn"
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echo "If you want to add more clients, you simply need to run this script again!"
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fi
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