mirror of
https://github.com/pivpn/pivpn.git
synced 2024-10-18 13:43:32 +00:00
969 lines
38 KiB
Bash
Executable file
969 lines
38 KiB
Bash
Executable file
#!/usr/bin/env bash
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# PiVPN: Trivial openvpn setup and configuration
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# Easiest setup and mangement of openvpn on Raspberry Pi
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# http://pivpn.io
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# Heavily adapted from the pi-hole.net project and...
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# https://github.com/StarshipEngineer/OpenVPN-Setup/
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#
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# Install with this command (from your Pi):
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#
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# curl -L https://install.pivpn.io | bash
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######## VARIABLES #########
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tmpLog=/tmp/pivpn-install.log
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instalLogLoc=/etc/pivpn/install.log
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pivpnGitUrl="https://github.com/pivpn/pivpn.git"
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pivpnFilesDir="/etc/.pivpn"
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# Find the rows and columns
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rows=$(tput lines)
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columns=$(tput cols)
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# Divide by two so the dialogs take up half of the screen, which looks nice.
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r=$(( rows / 2 ))
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c=$(( columns / 2 ))
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# Find IP used to route to outside world
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IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
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IPv4addr=$(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}')
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IPv4gw=$(ip route get 8.8.8.8 | awk '{print $3}')
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availableInterfaces=$(ip -o link | awk '{print $2}' | grep -v "lo" | cut -d':' -f1)
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availableUsers=$(awk -F':' '$3>=500 && $3<=60000 {print $1}' /etc/passwd)
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dhcpcdFile=/etc/dhcpcd.conf
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######## FIRST CHECK ########
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# Must be root to install
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echo ":::"
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if [[ $EUID -eq 0 ]];then
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echo "::: You are root."
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else
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echo "::: sudo will be used for the install."
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# Check if it is actually installed
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# If it isn't, exit because the install cannot complete
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if [[ $(dpkg-query -s sudo) ]];then
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export SUDO="sudo"
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export SUDOE="sudo -E"
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else
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echo "::: Please install sudo or run this as root."
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exit 1
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fi
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fi
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# Next see if we are on a tested and supported OS
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function noOS_Support() {
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whiptail --msgbox --backtitle "INVALID OS DETECTED" --title "Invalid OS" "We have not been able to detect a supported OS.
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Currently this installer supports Raspbian jessie, Ubuntu 14.04 (trusty), and Ubuntu 16.04 (xenial).
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If you think you received this message in error, you can post an issue on the GitHub at https://github.com/pivpn/pivpn/issues." $r $c
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exit 1
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}
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function maybeOS_Support() {
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if (whiptail --backtitle "Not Supported OS" --title "Not Supported OS" --yesno "You are on an OS that we have not tested but MAY work.
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Currently this installer supports Raspbian jessie, Ubuntu 14.04 (trusty), and Ubuntu 16.04 (xenial).
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Would you like to continue anyway?" $r $c) then
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echo "::: Did not detect perfectly supported OS but,"
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echo "::: Continuing installation at user's own risk..."
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else
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echo "::: Exiting due to unsupported OS"
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exit 1
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fi
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}
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# if lsb_release command is on their system
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if hash lsb_release 2>/dev/null; then
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PLAT=$(lsb_release -si)
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OSCN=$(lsb_release -sc) # We want this to be trusty xenial or jessie
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if [[ $PLAT == "Ubuntu" || $PLAT == "Raspbian" || $PLAT == "Debian" ]]; then
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if [[ $OSCN != "trusty" && $OSCN != "xenial" && $OSCN != "jessie" ]]; then
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maybeOS_Support
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fi
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else
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noOS_Support
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fi
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# else get info from os-release
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elif [[ "$(cat /etc/os-release | grep raspbian)" ]]; then
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if [[ "$(cat /etc/os-release | grep jessie)" ]]; then
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PLAT="Raspbian"
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OSCN="jessie"
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else
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PLAT="Ubuntu"
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OSCN="unknown"
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maybeOS_Support
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fi
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# else we prob don't want to install
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else
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noOS_Support
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fi
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echo "${PLAT}" > /tmp/DET_PLATFORM
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####### FUNCTIONS ##########
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spinner()
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{
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local pid=$1
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local delay=0.50
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local spinstr='/-\|'
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while [ "$(ps a | awk '{print $1}' | grep "$pid")" ]; do
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local temp=${spinstr#?}
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printf " [%c] " "$spinstr"
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local spinstr=$temp${spinstr%"$temp"}
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sleep $delay
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printf "\b\b\b\b\b\b"
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done
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printf " \b\b\b\b"
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}
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welcomeDialogs() {
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# Display the welcome dialog
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whiptail --msgbox --backtitle "Welcome" --title "PiVPN Automated Installer" "This installer will transform your Raspberry Pi into an openvpn server!" $r $c
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# Explain the need for a static address
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whiptail --msgbox --backtitle "Initiating network interface" --title "Static IP Needed" "The PiVPN is a SERVER so it needs a STATIC IP ADDRESS to function properly.
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In the next section, you can choose to use your current network settings (DHCP) or to manually edit them." $r $c
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}
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chooseUser() {
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# Explain the local user
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whiptail --msgbox --backtitle "Parsing User List" --title "Local Users" "Choose a local user that will hold your ovpn configurations." $r $c
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userArray=()
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firstloop=1
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while read -r line
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do
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mode="OFF"
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if [[ $firstloop -eq 1 ]]; then
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firstloop=0
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mode="ON"
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fi
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userArray+=("$line" "available" "$mode")
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done <<< "$availableUsers"
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# Find out how many users are available to choose from
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userCount=$(echo "$availableUsers" | wc -l)
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chooseUserCmd=(whiptail --title "Choose A User" --separate-output --radiolist "Choose:" $r $c $userCount)
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chooseUserOptions=$("${chooseUserCmd[@]}" "${userArray[@]}" 2>&1 >/dev/tty)
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if [[ $? = 0 ]]; then
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for desiredUser in $chooseUserOptions
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do
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pivpnUser=$desiredUser
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echo "::: Using User: $pivpnUser"
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echo "${pivpnUser}" > /tmp/pivpnUSR
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done
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else
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echo "::: Cancel selected, exiting...."
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exit 1
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fi
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}
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verifyFreeDiskSpace() {
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# If user installs unattended-upgrades we'd need about 60MB so will check for 75MB free
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requiredFreeBytes=76800
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existingFreeBytes=$(df -lk / 2>&1 | awk '{print $4}' | head -2 | tail -1)
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if ! [[ "$existingFreeBytes" =~ ^([0-9])+$ ]]; then
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existingFreeBytes=$(df -lk /dev 2>&1 | awk '{print $4}' | head -2 | tail -1)
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fi
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if [[ $existingFreeBytes -lt $requiredFreeBytes ]]; then
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whiptail --msgbox --backtitle "Insufficient Disk Space" --title "Insufficient Disk Space" "\nYour system appears to be low on disk space. PiVPN recomends a minimum of $requiredFreeBytes Bytes.\nYou only have $existingFreeBytes Free.\n\nIf this is a new install you may need to expand your disk.\n\nTry running:\n 'sudo raspi-config'\nChoose the 'expand file system option'\n\nAfter rebooting, run this installation again.\n\ncurl -L https://install.pivpn.io | bash\n" $r $c
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echo "$existingFreeBytes is less than $requiredFreeBytes"
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echo "Insufficient free space, exiting..."
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exit 1
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fi
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}
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chooseInterface() {
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# Turn the available interfaces into an array so it can be used with a whiptail dialog
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interfacesArray=()
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firstloop=1
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while read -r line
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do
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mode="OFF"
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if [[ $firstloop -eq 1 ]]; then
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firstloop=0
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mode="ON"
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fi
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interfacesArray+=("$line" "available" "$mode")
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done <<< "$availableInterfaces"
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# Find out how many interfaces are available to choose from
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interfaceCount=$(echo "$availableInterfaces" | wc -l)
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chooseInterfaceCmd=(whiptail --separate-output --radiolist "Choose An Interface" $r $c $interfaceCount)
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chooseInterfaceOptions=$("${chooseInterfaceCmd[@]}" "${interfacesArray[@]}" 2>&1 >/dev/tty)
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if [[ $? = 0 ]]; then
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for desiredInterface in $chooseInterfaceOptions
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do
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pivpnInterface=$desiredInterface
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echo "::: Using interface: $pivpnInterface"
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echo "${pivpnInterface}" > /tmp/pivpnINT
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done
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else
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echo "::: Cancel selected, exiting...."
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exit 1
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fi
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}
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avoidStaticIPv4Ubuntu() {
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# If we are in Ubuntu then they need to have previously set their network, so just use what you have.
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whiptail --msgbox --backtitle "IP Information" --title "IP Information" "Since we think you are not using Raspbian, we will not configure a static IP for you.
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If you are in Amazon then you can not configure a static IP anyway. Just ensure before this installer started you had set an elastic IP on your instance." $r $c
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}
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getStaticIPv4Settings() {
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# Ask if the user wants to use DHCP settings as their static IP
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if (whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Do you want to use your current network settings as a static address?
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IP address: $IPv4addr
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Gateway: $IPv4gw" $r $c) then
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# If they choose yes, let the user know that the IP address will not be available via DHCP and may cause a conflict.
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whiptail --msgbox --backtitle "IP information" --title "FYI: IP Conflict" "It is possible your router could still try to assign this IP to a device, which would cause a conflict. But in most cases the router is smart enough to not do that.
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If you are worried, either manually set the address, or modify the DHCP reservation pool so it does not include the IP you want.
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It is also possible to use a DHCP reservation, but if you are going to do that, you might as well set a static address." $r $c
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# Nothing else to do since the variables are already set above
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else
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# Otherwise, we need to ask the user to input their desired settings.
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# Start by getting the IPv4 address (pre-filling it with info gathered from DHCP)
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# Start a loop to let the user enter their information with the chance to go back and edit it if necessary
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until [[ $ipSettingsCorrect = True ]]
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do
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# Ask for the IPv4 address
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IPv4addr=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" $r $c "$IPv4addr" 3>&1 1>&2 2>&3)
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if [[ $? = 0 ]];then
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echo "::: Your static IPv4 address: $IPv4addr"
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# Ask for the gateway
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IPv4gw=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 gateway (router)" --inputbox "Enter your desired IPv4 default gateway" $r $c "$IPv4gw" 3>&1 1>&2 2>&3)
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if [[ $? = 0 ]];then
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echo "::: Your static IPv4 gateway: $IPv4gw"
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# Give the user a chance to review their settings before moving on
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if (whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Are these settings correct?
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IP address: $IPv4addr
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Gateway: $IPv4gw" $r $c)then
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# If the settings are correct, then we need to set the piVPNIP
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# Saving it to a temporary file us to retrieve it later when we run the gravity.sh script
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echo "${IPv4addr%/*}" > /tmp/pivpnIP
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echo "$pivpnInterface" > /tmp/pivpnINT
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# After that's done, the loop ends and we move on
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ipSettingsCorrect=True
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else
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# If the settings are wrong, the loop continues
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ipSettingsCorrect=False
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fi
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else
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# Cancelling gateway settings window
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ipSettingsCorrect=False
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echo "::: Cancel selected. Exiting..."
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exit 1
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fi
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else
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# Cancelling IPv4 settings window
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ipSettingsCorrect=False
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echo "::: Cancel selected. Exiting..."
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exit 1
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fi
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done
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# End the if statement for DHCP vs. static
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fi
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}
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setDHCPCD() {
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# Append these lines to dhcpcd.conf to enable a static IP
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echo "::: interface $pivpnInterface
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static ip_address=$IPv4addr
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static routers=$IPv4gw
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static domain_name_servers=$IPv4gw" | $SUDO tee -a $dhcpcdFile >/dev/null
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}
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setStaticIPv4() {
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# Tries to set the IPv4 address
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if grep -q "$IPv4addr" $dhcpcdFile; then
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# address already set, noop
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:
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else
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setDHCPCD
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$SUDO ip addr replace dev "$pivpnInterface" "$IPv4addr"
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echo ":::"
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echo "::: Setting IP to $IPv4addr. You may need to restart after the install is complete."
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echo ":::"
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fi
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}
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function valid_ip()
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{
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local ip=$1
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local stat=1
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if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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OIFS=$IFS
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IFS='.'
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ip=($ip)
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IFS=$OIFS
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[[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
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&& ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
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stat=$?
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fi
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return $stat
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}
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installScripts() {
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# Install the scripts from /etc/.pivpn to their various locations
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$SUDO echo ":::"
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$SUDO echo -n "::: Installing scripts to /opt/pivpn..."
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if [ ! -d /opt/pivpn ]; then
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$SUDO mkdir /opt/pivpn
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$SUDO chown "$pivpnUser":root /opt/pivpn
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$SUDO chmod u+srwx /opt/pivpn
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fi
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$SUDO cp /etc/.pivpn/scripts/makeOVPN.sh /opt/pivpn/makeOVPN.sh
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$SUDO cp /etc/.pivpn/scripts/listOVPN.sh /opt/pivpn/listOVPN.sh
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$SUDO cp /etc/.pivpn/scripts/removeOVPN.sh /opt/pivpn/removeOVPN.sh
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$SUDO cp /etc/.pivpn/scripts/uninstall.sh /opt/pivpn/uninstall.sh
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$SUDO cp /etc/.pivpn/scripts/pivpnDebug.sh /opt/pivpn/pivpnDebug.sh
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$SUDO chmod 0755 /opt/pivpn/{makeOVPN,listOVPN,removeOVPN,uninstall,pivpnDebug}.sh
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$SUDO cp /etc/.pivpn/pivpn /usr/local/bin/pivpn
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$SUDO chmod 0755 /usr/local/bin/pivpn
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$SUDO cp /etc/.pivpn/scripts/bash-completion /etc/bash_completion.d/pivpn
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. /etc/bash_completion.d/pivpn
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$SUDO echo " done."
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}
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unattendedUpgrades() {
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whiptail --msgbox --backtitle "Security Updates" --title "Unattended Upgrades" "Since this server will have at least one port open to the internet, it is recommended you enable unattended-upgrades.\nThis feature will check daily for security package updates only and apply them when necessary.\nIt will NOT automatically reboot the server so to fully apply some updates you should periodically reboot." $r $c
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if (whiptail --backtitle "Security Updates" --title "Unattended Upgrades" --yesno "Do you want to enable unattended upgrades of security patches to this server?" $r $c) then
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UNATTUPG="unattended-upgrades"
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else
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UNATTUPG=""
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fi
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}
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stopServices() {
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# Stop openvpn
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$SUDO echo ":::"
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$SUDO echo -n "::: Stopping openvpn service..."
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if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
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$SUDO service openvpn stop || true
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else
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$SUDO systemctl stop openvpn.service || true
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fi
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$SUDO echo " done."
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}
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checkForDependencies() {
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#Running apt-get update/upgrade with minimal output can cause some issues with
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#requiring user input (e.g password for phpmyadmin see #218)
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#We'll change the logic up here, to check to see if there are any updates availible and
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# if so, advise the user to run apt-get update/upgrade at their own discretion
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#Check to see if apt-get update has already been run today
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# it needs to have been run at least once on new installs!
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timestamp=$(stat -c %Y /var/cache/apt/)
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timestampAsDate=$(date -d @"$timestamp" "+%b %e")
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today=$(date "+%b %e")
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if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
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if [[ $OSCN == "trusty" || $OSCN == "jessie" || $OSCN == "wheezy" ]]; then
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wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg| $SUDO apt-key add -
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echo "deb http://swupdate.openvpn.net/apt $OSCN main" | $SUDO tee /etc/apt/sources.list.d/swupdate.openvpn.net.list > /dev/null
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echo -n "::: Adding openvpn repo for $PLAT $OSCN ..."
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$SUDO apt-get -qq update & spinner $!
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echo " done!"
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fi
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fi
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if [ ! "$today" == "$timestampAsDate" ]; then
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#update package lists
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echo ":::"
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echo -n "::: apt-get update has not been run today. Running now..."
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$SUDO apt-get -qq update & spinner $!
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echo " done!"
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fi
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echo ":::"
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echo -n "::: Checking apt-get for upgraded packages...."
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updatesToInstall=$($SUDO apt-get -s -o Debug::NoLocking=true upgrade | grep -c ^Inst)
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echo " done!"
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echo ":::"
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if [[ $updatesToInstall -eq "0" ]]; then
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echo "::: Your pi is up to date! Continuing with PiVPN installation..."
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else
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echo "::: There are $updatesToInstall updates availible for your pi!"
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echo "::: We recommend you run 'sudo apt-get upgrade' after installing PiVPN! "
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echo ":::"
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fi
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echo ":::"
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echo "::: Checking dependencies:"
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dependencies=( openvpn easy-rsa git iptables-persistent dnsutils expect $UNATTUPG )
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for i in "${dependencies[@]}"; do
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echo -n "::: Checking for $i..."
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if [ "$(dpkg-query -W -f='${Status}' "$i" 2>/dev/null | grep -c "ok installed")" -eq 0 ]; then
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echo -n " Not found! Installing...."
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#Supply answers to the questions so we don't prompt user
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if [[ $i = "iptables-persistent" ]]; then
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echo iptables-persistent iptables-persistent/autosave_v4 boolean true | $SUDO debconf-set-selections
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echo iptables-persistent iptables-persistent/autosave_v6 boolean false | $SUDO debconf-set-selections
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fi
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if [[ $i = "expect" ]] || [[ $i = "unattended-upgrades" ]]; then
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$SUDO apt-get -y -qq --no-install-recommends install "$i" > /dev/null & spinner $!
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else
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$SUDO apt-get -y -qq install "$i" > /dev/null & spinner $!
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fi
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echo " done!"
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else
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echo " already installed!"
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fi
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done
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}
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getGitFiles() {
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# Setup git repos for base files
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echo ":::"
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echo "::: Checking for existing base files..."
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if is_repo $pivpnFilesDir; then
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make_repo $pivpnFilesDir $pivpnGitUrl
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else
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update_repo $pivpnFilesDir
|
|
fi
|
|
}
|
|
|
|
is_repo() {
|
|
# If the directory does not have a .git folder it is not a repo
|
|
echo -n "::: Checking $1 is a repo..."
|
|
if [ -d "$1/.git" ]; then
|
|
echo " OK!"
|
|
return 1
|
|
fi
|
|
echo " not found!!"
|
|
return 0
|
|
}
|
|
|
|
make_repo() {
|
|
# Remove the non-repos interface and clone the interface
|
|
echo -n "::: Cloning $2 into $1..."
|
|
$SUDO rm -rf "$1"
|
|
$SUDO git clone -q "$2" "$1" > /dev/null & spinner $!
|
|
if [ -z ${TESTING+x} ]; then
|
|
:
|
|
else
|
|
$SUDO git -C $1 checkout test
|
|
fi
|
|
echo " done!"
|
|
}
|
|
|
|
update_repo() {
|
|
# Pull the latest commits
|
|
echo -n "::: Updating repo in $1..."
|
|
cd "$1" || exit
|
|
$SUDO git pull -q > /dev/null & spinner $!
|
|
if [ -z ${TESTING+x} ]; then
|
|
:
|
|
else
|
|
${SUDOE} git checkout test
|
|
fi
|
|
echo " done!"
|
|
}
|
|
|
|
setCustomProto() {
|
|
# Set the available protocols into an array so it can be used with a whiptail dialog
|
|
protocol=$(whiptail --title "Protocol" --radiolist \
|
|
"Choose a protocol. Please only choose TCP if you know why you need TCP." $r $c 2 \
|
|
"UDP" "" ON \
|
|
"TCP" "" OFF 3>&1 1>&2 2>&3)
|
|
if [ $? -eq 0 ]; then
|
|
# Convert option into lowercase (UDP->udp)
|
|
pivpnProto="${protocol,,}"
|
|
echo "::: Using protocol: $pivpnProto"
|
|
echo "${pivpnProto}" > /tmp/pivpnPROTO
|
|
else
|
|
echo "::: Cancel selected, exiting...."
|
|
exit 1
|
|
fi
|
|
# write out the PROTO
|
|
PROTO=$pivpnProto
|
|
$SUDO cp /tmp/pivpnPROTO /etc/pivpn/INSTALL_PROTO
|
|
}
|
|
|
|
|
|
setCustomPort() {
|
|
until [[ $PORTNumCorrect = True ]]
|
|
do
|
|
portInvalid="Invalid"
|
|
|
|
PROTO=`cat /etc/pivpn/INSTALL_PROTO`
|
|
if [ "$PROTO" = "udp" ]; then
|
|
DEFAULT_PORT=1194
|
|
else
|
|
DEFAULT_PORT=443
|
|
fi
|
|
|
|
PORT=$(whiptail --title "Default OpenVPN Port" --inputbox "You can modify the default OpenVPN port. \nEnter a new value or hit 'Enter' to retain the default" $r $c $DEFAULT_PORT 3>&1 1>&2 2>&3)
|
|
if [[ $? = 0 ]]; then
|
|
if [[ "$PORT" =~ ^[0-9]+$ ]] && [ "$PORT" -ge 1 -a "$PORT" -le 65535 ]; then
|
|
:
|
|
else
|
|
PORT=$portInvalid
|
|
fi
|
|
else
|
|
echo "::: Cancel selected, exiting...."
|
|
exit 1
|
|
fi
|
|
|
|
if [[ $PORT == "$portInvalid" ]]; then
|
|
whiptail --msgbox --backtitle "Invalid Port" --title "Invalid Port" "You entered an invalid Port number.\n Please enter a number from 1 - 65535.\n If you are not sure, please just keep the default." $r $c
|
|
PORTNumCorrect=False
|
|
else
|
|
if (whiptail --backtitle "Specify Custom Port" --title "Confirm Custom Port Number" --yesno "Are these settings correct?\n PORT: $PORT" $r $c) then
|
|
PORTNumCorrect=True
|
|
else
|
|
# If the settings are wrong, the loop continues
|
|
PORTNumCorrect=False
|
|
fi
|
|
fi
|
|
done
|
|
# write out the port
|
|
echo ${PORT} > /tmp/INSTALL_PORT
|
|
$SUDO cp /tmp/INSTALL_PORT /etc/pivpn/INSTALL_PORT
|
|
}
|
|
|
|
setClientDNS() {
|
|
DNSChoseCmd=(whiptail --separate-output --radiolist "Select the DNS Provider for your VPN Clients. To use your own, select Custom." $r $c 5)
|
|
DNSChooseOptions=(Google "" on
|
|
OpenDNS "" off
|
|
Level3 "" off
|
|
Norton "" off
|
|
Custom "" off)
|
|
DNSchoices=$("${DNSChoseCmd[@]}" "${DNSChooseOptions[@]}" 2>&1 >/dev/tty)
|
|
if [[ $? = 0 ]];then
|
|
case $DNSchoices in
|
|
Google)
|
|
echo "::: Using Google DNS servers."
|
|
OVPNDNS1="8.8.8.8"
|
|
OVPNDNS2="8.8.4.4"
|
|
# These are already in the file
|
|
;;
|
|
OpenDNS)
|
|
echo "::: Using OpenDNS servers."
|
|
OVPNDNS1="208.67.222.222"
|
|
OVPNDNS2="208.67.220.220"
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/ s/\(dhcp-option DNS \).*/\1'${OVPNDNS1}'\"/' /etc/openvpn/server.conf
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/! s/\(dhcp-option DNS \).*/\1'${OVPNDNS2}'\"/' /etc/openvpn/server.conf
|
|
;;
|
|
Level3)
|
|
echo "::: Using Level3 servers."
|
|
OVPNDNS1="209.244.0.3"
|
|
OVPNDNS2="209.244.0.4"
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/ s/\(dhcp-option DNS \).*/\1'${OVPNDNS1}'\"/' /etc/openvpn/server.conf
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/! s/\(dhcp-option DNS \).*/\1'${OVPNDNS2}'\"/' /etc/openvpn/server.conf
|
|
;;
|
|
Norton)
|
|
echo "::: Using Norton ConnectSafe servers."
|
|
OVPNDNS1="199.85.126.10"
|
|
OVPNDNS2="199.85.127.10"
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/ s/\(dhcp-option DNS \).*/\1'${OVPNDNS1}'\"/' /etc/openvpn/server.conf
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/! s/\(dhcp-option DNS \).*/\1'${OVPNDNS2}'\"/' /etc/openvpn/server.conf
|
|
;;
|
|
Custom)
|
|
until [[ $DNSSettingsCorrect = True ]]
|
|
do
|
|
strInvalid="Invalid"
|
|
OVPNDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)" --inputbox "Enter your desired upstream DNS provider(s), seperated by a comma.\n\nFor example '8.8.8.8, 8.8.4.4'" $r $c "" 3>&1 1>&2 2>&3)
|
|
if [[ $? = 0 ]];then
|
|
OVPNDNS1=$(echo "$OVPNDNS" | sed 's/[, \t]\+/,/g' | awk -F, '{print$1}')
|
|
OVPNDNS2=$(echo "$OVPNDNS" | sed 's/[, \t]\+/,/g' | awk -F, '{print$2}')
|
|
if ! valid_ip "$OVPNDNS1" || [ ! "$OVPNDNS1" ]; then
|
|
OVPNDNS1=$strInvalid
|
|
fi
|
|
if ! valid_ip "$OVPNDNS2" && [ "$OVPNDNS2" ]; then
|
|
OVPNDNS2=$strInvalid
|
|
fi
|
|
else
|
|
echo "::: Cancel selected, exiting...."
|
|
exit 1
|
|
fi
|
|
if [[ $OVPNDNS1 == "$strInvalid" ]] || [[ $OVPNDNS2 == "$strInvalid" ]]; then
|
|
whiptail --msgbox --backtitle "Invalid IP" --title "Invalid IP" "One or both entered IP addresses were invalid. Please try again.\n\n DNS Server 1: $OVPNDNS1\n DNS Server 2: $OVPNDNS2" $r $c
|
|
if [[ $OVPNDNS1 == "$strInvalid" ]]; then
|
|
OVPNDNS1=""
|
|
fi
|
|
if [[ $OVPNDNS2 == "$strInvalid" ]]; then
|
|
OVPNDNS2=""
|
|
fi
|
|
DNSSettingsCorrect=False
|
|
else
|
|
if (whiptail --backtitle "Specify Upstream DNS Provider(s)" --title "Upstream DNS Provider(s)" --yesno "Are these settings correct?\n DNS Server 1: $OVPNDNS1\n DNS Server 2: $OVPNDNS2" $r $c) then
|
|
DNSSettingsCorrect=True
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/ s/\(dhcp-option DNS \).*/\1'${OVPNDNS1}'\"/' /etc/openvpn/server.conf
|
|
$SUDO sed -i '0,/\(dhcp-option DNS \)/! s/\(dhcp-option DNS \).*/\1'${OVPNDNS2}'\"/' /etc/openvpn/server.conf
|
|
else
|
|
# If the settings are wrong, the loop continues
|
|
DNSSettingsCorrect=False
|
|
fi
|
|
fi
|
|
done
|
|
;;
|
|
esac
|
|
else
|
|
echo "::: Cancel selected. Exiting..."
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
confOpenVPN() {
|
|
# Ask user if want to modify default port
|
|
SERVER_NAME="server"
|
|
|
|
# Ask user for desired level of encryption
|
|
ENCRYPT=$(whiptail --backtitle "Setup OpenVPN" --title "Encryption Strength" --radiolist \
|
|
"Choose your desired level of encryption:\n This is an encryption key that will be generated on your system. The larger the key, the more time this will take. For most applications it is recommended to use 2048 bit. If you are testing or just want to get through it quicker you can use 1024. If you are paranoid about ... things... then grab a cup of joe and pick 4096." $r $c 3 \
|
|
"2048" "Use 2048-bit encryption. Recommended level." ON \
|
|
"1024" "Use 1024-bit encryption. Test level." OFF \
|
|
"4096" "Use 4096-bit encryption. Paranoid level." OFF 3>&1 1>&2 2>&3)
|
|
|
|
exitstatus=$?
|
|
if [ $exitstatus != 0 ]; then
|
|
echo "::: Cancel selected. Exiting..."
|
|
exit 1
|
|
fi
|
|
|
|
# Copy the easy-rsa files to a directory inside the new openvpn directory
|
|
$SUDO cp -r /usr/share/easy-rsa /etc/openvpn
|
|
|
|
# Edit the EASY_RSA variable in the vars file to point to the new easy-rsa directory,
|
|
# And set the chosen key size
|
|
cd /etc/openvpn/easy-rsa
|
|
$SUDO sed -i 's:"`pwd`":"/etc/openvpn/easy-rsa":' vars
|
|
$SUDO sed -i "s/\(KEY_SIZE=\).*/\1${ENCRYPT}/" vars
|
|
|
|
# Init Cert Values
|
|
COUNTRY="US"
|
|
STATE="CA"
|
|
CITY="SanFrancisco"
|
|
ORG="Fort-Funston"
|
|
SERVER_NAME="server"
|
|
KEY_NAME="EasyRSA"
|
|
EMAIL="me@myhost.mydomain"
|
|
|
|
whiptail --title "Certificate Information" --msgbox "You will now be shown the default values for fields that will be used in the certificate. \nIt is fine to leave these as-is since only you and the clients you create will ever see this. \nHowever, if you want to change the values, simply select the ones you wish to modify." $r $c
|
|
|
|
until [[ $CERTVALCorrect = True ]]
|
|
do
|
|
CERTVAL=$(whiptail --title "Certificate Information" --checklist "Choose any certificate values you want to change" $r $c 7 \
|
|
"COUNTRY" "= US" OFF \
|
|
"STATE" "= CA" OFF \
|
|
"CITY" "= SanFranciso" OFF \
|
|
"ORG" "= Fort-Funston" OFF \
|
|
"SERVER_NAME" "= server" OFF \
|
|
"KEY_NAME" "= EasyRSA" OFF \
|
|
"EMAIL" "= me@myhost.mydomain" OFF 3>&1 1>&2 2>&3)
|
|
|
|
exitstatus=$?
|
|
if [ $exitstatus != 0 ]; then
|
|
echo "::: Cancel selected. Exiting..."
|
|
exit 1
|
|
fi
|
|
|
|
for i in $CERTVAL
|
|
do
|
|
if [ $i == '"COUNTRY"' ]; then
|
|
COUNTRY=$(whiptail --title "Certificate Country" --inputbox \
|
|
"Enter a 2 letter abbreviation for Country" $r $c US 3>&1 1>&2 2>&3)
|
|
$SUDO sed -i "s/\(KEY_COUNTRY=\"\).*/\1${COUNTRY}\"/" vars
|
|
fi
|
|
if [ $i == '"STATE"' ]; then
|
|
STATE=$(whiptail --title "Certificate State" --inputbox \
|
|
"Enter a 2 letter abbreviated State or Province" $r $c CA 3>&1 1>&2 2>&3)
|
|
$SUDO sed -i "s/\(KEY_PROVINCE=\"\).*/\1${STATE}\"/" vars
|
|
fi
|
|
if [ $i == '"CITY"' ]; then
|
|
CITY=$(whiptail --title "Certificate City" --inputbox \
|
|
"Enter a City name" $r $c SanFrancisco 3>&1 1>&2 2>&3)
|
|
$SUDO sed -i "s/\(KEY_CITY=\"\).*/\1${CITY}\"/" vars
|
|
fi
|
|
if [ $i == '"ORG"' ]; then
|
|
ORG=$(whiptail --title "Certificate Org" --inputbox \
|
|
"Enter an Organization name" $r $c Fort-Funston 3>&1 1>&2 2>&3)
|
|
$SUDO sed -i "s/\(KEY_ORG=\"\).*/\1${ORG}\"/" vars
|
|
fi
|
|
if [ $i == '"EMAIL"' ]; then
|
|
EMAIL=$(whiptail --title "Certificate Email" --inputbox \
|
|
"Enter an Email Address" $r $c "me@myhost.mydomain" 3>&1 1>&2 2>&3)
|
|
$SUDO sed -i "s/\(KEY_EMAIL=\"\).*/\1${EMAIL}\"/" vars
|
|
fi
|
|
if [ $i == '"SERVER_NAME"' ]; then
|
|
SERVER_NAME=$(whiptail --title "Server Name" --inputbox \
|
|
"Enter a Server Name" $r $c "pivpn" 3>&1 1>&2 2>&3)
|
|
# This began a rabbit hole of errors. Nope.
|
|
#sed -i '/export KEY_CN/s/^#//g' vars
|
|
#sed -i "s/\(KEY_CN=\"\).*/\1${SERVER_NAME}\"/" vars
|
|
fi
|
|
if [ $i == '"KEY_NAME"' ]; then
|
|
KEY_NAME=$(whiptail --title "Key Name" --inputbox \
|
|
"Enter a Key Name" $r $c "EasyRSA" 3>&1 1>&2 2>&3)
|
|
$SUDO sed -i "s/\(KEY_NAME=\"\).*/\1${KEY_NAME}\"/" vars
|
|
fi
|
|
done
|
|
if (whiptail --backtitle "Confirm Certificate Fields" --title "Confirm Certificate Fields" --yesno "Are these values correct?\n\n Country: $COUNTRY\n State: $STATE\n City: $CITY\n Org: $ORG\n Email: $EMAIL\n Server Name: $SERVER_NAME\n Key Name: $KEY_NAME" $r $c) then
|
|
CERTVALCorrect=True
|
|
else
|
|
CERTVALCorrect=False
|
|
fi
|
|
done
|
|
# Make PiVPN the OU
|
|
KEY_OU=PiVPN
|
|
$SUDO sed -i "s/\(KEY_OU=\"\).*/\1${KEY_OU}\"/" vars
|
|
|
|
# It seems you have to set this if you mess with key_cn, lets not.
|
|
# grep -q 'KEY_ALTNAMES=' vars || printf '\nexport KEY_ALTNAMES="PiVPN_KEYALT"\n' >> vars
|
|
|
|
# source the vars file just edited
|
|
source ./vars
|
|
|
|
# Remove any previous keys
|
|
${SUDOE} ./clean-all
|
|
|
|
# Build the certificate authority
|
|
echo "::: Building CA..."
|
|
${SUDOE} ./build-ca < /etc/.pivpn/ca_info.txt
|
|
printf "\n::: CA Complete.\n"
|
|
|
|
whiptail --msgbox --backtitle "Setup OpenVPN" --title "Server Information" "The server key, Diffie-Hellman key, and HMAC key will now be generated." $r $c
|
|
|
|
# Build the server
|
|
${SUDOE} ./build-key-server --batch $SERVER_NAME
|
|
|
|
# Generate Diffie-Hellman key exchange
|
|
${SUDOE} ./build-dh
|
|
|
|
# Generate static HMAC key to defend against DDoS
|
|
${SUDOE} openvpn --genkey --secret keys/ta.key
|
|
|
|
# Write config file for server using the template .txt file
|
|
LOCALIP=$(ifconfig $pivpnInterface | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*')
|
|
$SUDO cp /etc/.pivpn/server_config.txt /etc/openvpn/server.conf
|
|
|
|
$SUDO sed -i "s/LOCALIP/${LOCALIP}/g" /etc/openvpn/server.conf
|
|
|
|
# Set the user encryption key size
|
|
$SUDO sed -i "s/\(dh \/etc\/openvpn\/easy-rsa\/keys\/dh\).*/\1${ENCRYPT}.pem/" /etc/openvpn/server.conf
|
|
|
|
# if they modified port put value in server.conf
|
|
if [ $PORT != 1194 ]; then
|
|
$SUDO sed -i "s/1194/${PORT}/g" /etc/openvpn/server.conf
|
|
fi
|
|
|
|
# if they modified protocol put value in server.conf
|
|
if [ $PROTO != "udp" ]; then
|
|
$SUDO sed -i "s/proto udp/proto tcp/g" /etc/openvpn/server.conf
|
|
fi
|
|
|
|
# write out server certs to conf file
|
|
$SUDO sed -i "s/\(key \/etc\/openvpn\/easy-rsa\/keys\/\).*/\1${SERVER_NAME}.key/" /etc/openvpn/server.conf
|
|
$SUDO sed -i "s/\(cert \/etc\/openvpn\/easy-rsa\/keys\/\).*/\1${SERVER_NAME}.crt/" /etc/openvpn/server.conf
|
|
}
|
|
|
|
confUnattendedUpgrades() {
|
|
if [[ $UNATTUPG == "unattended-upgrades" ]]; then
|
|
if [[ $PLAT == "Ubuntu" ]]; then
|
|
# Ubuntu 50unattended-upgrades should already just have security enabled
|
|
# so we just need to configure the 10periodic file
|
|
cat << EOT | $SUDO tee /etc/apt/apt.conf.d/10periodic >/dev/null
|
|
APT::Periodic::Update-Package-Lists "1";
|
|
APT::Periodic::Download-Upgradeable-Packages "1";
|
|
APT::Periodic::AutocleanInterval "5";
|
|
APT::Periodic::Unattended-Upgrade "1";
|
|
EOT
|
|
else
|
|
$SUDO sed -i '/\(o=Raspbian,n=jessie\)/c\"o=Raspbian,n=jessie,l=Raspbian-Security";\' /etc/apt/apt.conf.d/50unattended-upgrades
|
|
cat << EOT | $SUDO tee /etc/apt/apt.conf.d/02periodic >/dev/null
|
|
APT::Periodic::Enable "1";
|
|
APT::Periodic::Update-Package-Lists "1";
|
|
APT::Periodic::Download-Upgradeable-Packages "1";
|
|
APT::Periodic::Unattended-Upgrade "1";
|
|
APT::Periodic::AutocleanInterval "7";
|
|
APT::Periodic::Verbose "0";
|
|
EOT
|
|
fi
|
|
fi
|
|
|
|
}
|
|
|
|
confNetwork() {
|
|
# Enable forwarding of internet traffic
|
|
$SUDO sed -i '/net.ipv4.ip_forward=1/s/^#//g' /etc/sysctl.conf
|
|
$SUDO sysctl -p
|
|
|
|
# if ufw enabled, configure that
|
|
if hash ufw 2>/dev/null; then
|
|
$SUDO ufw status | grep inactive &>/dev/null
|
|
if [[ $? -eq 0 ]]; then
|
|
noUFW=1
|
|
else
|
|
echo "::: Detected UFW is enabled."
|
|
echo "::: Adding UFW rules..."
|
|
$SUDO cp /etc/.pivpn/ufw_add.txt /tmp/ufw_add.txt
|
|
$SUDO sed -i 's/IPv4dev/'$IPv4dev'/' /tmp/ufw_add.txt
|
|
$SUDO sed -i "s/\(DEFAULT_FORWARD_POLICY=\).*/\1\"ACCEPT\"/" /etc/default/ufw
|
|
$SUDO sed -i -e '/delete these required/r /tmp/ufw_add.txt' -e//N /etc/ufw/before.rules
|
|
$SUDO ufw allow ${PORT}/${PROTO}
|
|
$SUDO ufw allow from 10.8.0.0/24
|
|
$SUDO ufw reload
|
|
echo "::: UFW configuration completed."
|
|
fi
|
|
else
|
|
noUFW=1
|
|
fi
|
|
# else configure iptables
|
|
if [[ $noUFW -eq 1 ]]; then
|
|
echo 1 > /tmp/noUFW
|
|
$SUDO iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o $IPv4dev -j MASQUERADE
|
|
if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
|
|
$SUDO iptables-save
|
|
else
|
|
$SUDO netfilter-persistent save
|
|
fi
|
|
else
|
|
echo 0 > /tmp/noUFW
|
|
fi
|
|
|
|
$SUDO cp /tmp/noUFW /etc/pivpn/NO_UFW
|
|
}
|
|
|
|
confOVPN() {
|
|
IPv4pub=$(dig +short myip.opendns.com @resolver1.opendns.com)
|
|
$SUDO cp /tmp/pivpnUSR /etc/pivpn/INSTALL_USER
|
|
$SUDO cp /tmp/DET_PLATFORM /etc/pivpn/DET_PLATFORM
|
|
|
|
# Set status that no certs have been revoked
|
|
echo 0 > /tmp/REVOKE_STATUS
|
|
$SUDO cp /tmp/REVOKE_STATUS /etc/pivpn/REVOKE_STATUS
|
|
|
|
METH=$(whiptail --title "Public IP or DNS" --radiolist "Will clients use a Public IP or DNS Name to connect to your server?" $r $c 2 \
|
|
"$IPv4pub" "Use this public IP" "ON" \
|
|
"DNS Entry" "Use a public DNS" "OFF" 3>&1 1>&2 2>&3)
|
|
|
|
exitstatus=$?
|
|
if [ $exitstatus != 0 ]; then
|
|
echo "::: Cancel selected. Exiting..."
|
|
exit 1
|
|
fi
|
|
|
|
$SUDO cp /etc/.pivpn/Default.txt /etc/openvpn/easy-rsa/keys/Default.txt
|
|
|
|
if [ "$METH" == "$IPv4pub" ]; then
|
|
$SUDO sed -i 's/IPv4pub/'$IPv4pub'/' /etc/openvpn/easy-rsa/keys/Default.txt
|
|
else
|
|
until [[ $publicDNSCorrect = True ]]
|
|
do
|
|
PUBLICDNS=$(whiptail --title "PiVPN Setup" --inputbox "What is the public DNS name of this Server?" $r $c 3>&1 1>&2 2>&3)
|
|
exitstatus=$?
|
|
if [ $exitstatus != 0 ]; then
|
|
echo "::: Cancel selected. Exiting..."
|
|
exit 1
|
|
fi
|
|
if (whiptail --backtitle "Confirm DNS Name" --title "Confirm DNS Name" --yesno "Is this correct?\n\n Public DNS Name: $PUBLICDNS" $r $c) then
|
|
publicDNSCorrect=True
|
|
$SUDO sed -i 's/IPv4pub/'$PUBLICDNS'/' /etc/openvpn/easy-rsa/keys/Default.txt
|
|
else
|
|
publicDNSCorrect=False
|
|
|
|
fi
|
|
done
|
|
fi
|
|
|
|
# if they modified port put value in Default.txt for clients to use
|
|
if [ $PORT != 1194 ]; then
|
|
$SUDO sed -i -e "s/1194/${PORT}/g" /etc/openvpn/easy-rsa/keys/Default.txt
|
|
fi
|
|
|
|
# if they modified protocol put value in Default.txt for clients to use
|
|
if [ $PROTO != "udp" ]; then
|
|
$SUDO sed -i -e "s/proto udp/proto tcp/g" /etc/openvpn/easy-rsa/keys/Default.txt
|
|
fi
|
|
|
|
# verify server name to strengthen security
|
|
$SUDO sed -i "s/SRVRNAME/${SERVER_NAME}/" /etc/openvpn/easy-rsa/keys/Default.txt
|
|
|
|
$SUDO mkdir /home/$pivpnUser/ovpns
|
|
$SUDO chmod 0777 -R /home/$pivpnUser/ovpns
|
|
}
|
|
|
|
installPiVPN() {
|
|
checkForDependencies
|
|
stopServices
|
|
confUnattendedUpgrades
|
|
$SUDO mkdir -p /etc/pivpn/
|
|
getGitFiles
|
|
installScripts
|
|
setCustomProto
|
|
setCustomPort
|
|
confOpenVPN
|
|
confNetwork
|
|
confOVPN
|
|
setClientDNS
|
|
}
|
|
|
|
displayFinalMessage() {
|
|
# Final completion message to user
|
|
if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
|
|
$SUDO service openvpn start
|
|
else
|
|
$SUDO systemctl enable openvpn.service
|
|
$SUDO systemctl start openvpn.service
|
|
fi
|
|
|
|
whiptail --msgbox --backtitle "Make it so." --title "Installation Complete!" "Now run 'pivpn add' to create the ovpn profiles.
|
|
Run 'pivpn help' to see what else you can do!
|
|
The install log is in /etc/pivpn." $r $c
|
|
if (whiptail --title "Reboot" --yesno --defaultno "It is strongly recommended you reboot after installation. Would you like to reboot now?" $r $c); then
|
|
whiptail --title "Rebooting" --msgbox "The system will now reboot." $r $c
|
|
printf "\nRebooting system...\n"
|
|
$SUDO sleep 3
|
|
$SUDO shutdown -r now
|
|
fi
|
|
}
|
|
|
|
######## SCRIPT ############
|
|
# Start the installer
|
|
welcomeDialogs
|
|
|
|
# Verify there is enough disk space for the install
|
|
verifyFreeDiskSpace
|
|
|
|
# Find interfaces and let the user choose one
|
|
chooseInterface
|
|
|
|
# Only try to set static on Raspbian, otherwise let user do it
|
|
if [[ $PLAT != "Raspbian" ]]; then
|
|
avoidStaticIPv4Ubuntu
|
|
else
|
|
getStaticIPv4Settings
|
|
setStaticIPv4
|
|
fi
|
|
|
|
# Choose the user for the ovpns
|
|
chooseUser
|
|
|
|
# Ask if unattended-upgrades will be enabled
|
|
unattendedUpgrades
|
|
|
|
# Install and log everything to a file
|
|
installPiVPN
|
|
|
|
# Move the log file into /etc/pivpn for storage
|
|
#$SUDO mv $tmpLog $installLogLoc
|
|
|
|
displayFinalMessage
|
|
|
|
echo "::: Install Complete..."
|