mirror of
https://github.com/pivpn/pivpn.git
synced 2025-04-26 01:00:11 +00:00
First commit of reworked installer
This commit is contained in:
Kaladin Light
parent
3fb4f4e995
commit
53565dd4fe
13 changed files with 1116 additions and 2 deletions
531
auto_install/install.sh
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531
auto_install/install.sh
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@ -0,0 +1,531 @@
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#!/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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# https://github.com/StarshipEngineer/OpenVPN-Setup/
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# Installs pivpn
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# Heavily adapted from the pi-hole project
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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 vigilcode.com/pivpnsetup | 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/0-kaladin/OpenVPN-Setup.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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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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####### 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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# I have no idea what the minimum space needed is, but checking for at least 50MB sounds like a good idea.
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requiredFreeBytes=51200
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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 vigilcode.com/pivpnsetup | 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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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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source /etc/bash_completion.d/pivpn
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$SUDO echo " done."
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}
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stopServices() {
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# Stop openvpn
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$SUDO echo ":::"
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$SUDO echo -n "::: Stopping openvpn service..."
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$SUDO service openvpn stop || true
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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=$(date "+%b %e")
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if [ ! "$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 $updatesToInstall updates availible for your pi!"
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echo "::: We recommend you run 'sudo apt-get upgrade' after installing PiVPN! "
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echo ":::"
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fi
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echo ":::"
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echo "::: Checking dependencies:"
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dependencies=( openvpn easy-rsa git iptables-persistent dnsutils )
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for i in "${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 -eq "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 | $SUDO debconf-set-selections
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fi
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$SUDO apt-get -y -qq install "$i" > /dev/null & spinner $!
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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
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fi
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}
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is_repo() {
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# If the directory does not have a .git folder it is not a repo
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echo -n "::: Checking $1 is a repo..."
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if [ -d "$1/.git" ]; then
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echo " OK!"
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return 1
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fi
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echo " not found!!"
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return 0
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}
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make_repo() {
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# Remove the non-repos interface and clone the interface
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echo -n "::: Cloning $2 into $1..."
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$SUDO rm -rf "$1"
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$SUDO git clone -q "$2" "$1" > /dev/null & spinner $!
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echo " done!"
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}
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update_repo() {
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# Pull the latest commits
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echo -n "::: Updating repo in $1..."
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cd "$1" || exit
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$SUDO git pull -q > /dev/null & spinner $!
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echo " done!"
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}
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confOpenVPN () {
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# Ask user for desired level of encryption
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ENCRYPT=$(whiptail --backtitle "Setup OpenVPN" --title "Encryption Strength" --radiolist \
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"Choose your desired level of encryption:" $r $c 2 \
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"2048" "Use 2048-bit encryption. Slower to set up, but more secure." ON \
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"1024" "Use 1024-bit encryption. Faster to set up, but less secure." OFF 3>&1 1>&2 2>&3)
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exitstatus=$?
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if [ $exitstatus != 0 ]; then
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echo "::: Cancel selected. Exiting..."
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exit 1
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fi
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# Copy the easy-rsa files to a directory inside the new openvpn directory
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cp -r /usr/share/easy-rsa /etc/openvpn
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# Edit the EASY_RSA variable in the vars file to point to the new easy-rsa directory,
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# And change from default 1024 encryption if desired
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cd /etc/openvpn/easy-rsa
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sed -i 's:"`pwd`":"/etc/openvpn/easy-rsa":' vars
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if [[ $ENCRYPT -eq "1024" ]]; then
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sed -i 's:KEY_SIZE=2048:KEY_SIZE=1024:' vars
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fi
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||||
# source the vars file just edited
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source ./vars
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||||
# Remove any previous keys
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./clean-all
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||||
|
||||
# Build the certificate authority
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./build-ca < /etc/.pivpn/ca_info.txt
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whiptail --msgbox --backtitle "Setup OpenVPN" --title "Server Information" "You will now be asked for identifying information for the server. Press 'Enter' to skip a field." $r $c
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||||
# can export env variables here for users to provide. export KEY_EMAIL will set email field for example.
|
||||
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||||
# Build the server
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||||
./build-key-server --batch server
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||||
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||||
# Generate Diffie-Hellman key exchange
|
||||
./build-dh
|
||||
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||||
# Generate static HMAC key to defend against DDoS
|
||||
openvpn --genkey --secret keys/ta.key
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||||
|
||||
# Write config file for server using the template .txt file
|
||||
LOCALIP=$(ifconfig $pivpnInterface | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*')
|
||||
sed 's/LOCALIP/'$LOCALIP'/' </etc/.pivpn/server_config.txt >/etc/openvpn/server.conf
|
||||
if [ $ENCRYPT = 2048 ]; then
|
||||
sed -i 's:dh1024:dh2048:' /etc/openvpn/server.conf
|
||||
fi
|
||||
}
|
||||
|
||||
confNetwork() {
|
||||
# Enable forwarding of internet traffic
|
||||
sed -i '/#net.ipv4.ip_forward=1/c\net.ipv4.ip_forward=1' /etc/sysctl.conf
|
||||
$SUDO sysctl -p
|
||||
|
||||
# Write script to run openvpn and allow it through firewall on boot using the template .txt file
|
||||
$SUDO iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o $IPv4dev -j MASQUERADE
|
||||
$SUDO netfilter-persistent save
|
||||
}
|
||||
|
||||
confOVPN() {
|
||||
IPv4pub=$(dig +short myip.opendns.com @resolver1.opendns.com)
|
||||
$SUDO cp /tmp/pivpnUSR /etc/pivpn/INSTALL_USER
|
||||
|
||||
# Set status that no certs have been revoked
|
||||
$SUDO echo 0 > /etc/pivpn/REVOKE_STATUS
|
||||
|
||||
METH=$(whiptail --title "Public IP or DNS" --radiolist "Will clients use a Public IP or DNS?" $r $c 2 \
|
||||
"$IPv4pub" "Use this public IP" "ON" \
|
||||
"DNS Entry" "Use a public DNS" "OFF" 3>&1 1>&2 2>&3)
|
||||
|
||||
exitstatus=$?
|
||||
if [ $exitstatus != 0 ]; then
|
||||
echo "::: Cancel selected. Exiting..."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
|
||||
if [ "$METH" == "$IPv4pub" ]; then
|
||||
sed 's/IPv4pub/'$IPv4pub'/' </etc/.pivpn/Default.txt >/etc/openvpn/easy-rsa/keys/Default.txt
|
||||
else
|
||||
PUBLICDNS=$(whiptail --title "PiVPN Setup" --inputbox "What is the public DNS name of this Raspberry Pi?" $r $c 3>&1 1>&2 2>&3)
|
||||
exitstatus=$?
|
||||
if [ $exitstatus = 0 ]; then
|
||||
sed 's/IPv4pub/'$PUBLICDNS'/' </etc/.pivpn/Default.txt >/etc/openvpn/easy-rsa/keys/Default.txt
|
||||
whiptail --title "Setup OpenVPN" --infobox "Using PUBLIC DNS: $PUBLICDNS" $r $c
|
||||
else
|
||||
whiptail --title "Setup OpenVPN" --infobox "Cancelled" $r $c
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
|
||||
mkdir /home/$pivpnUser/ovpns
|
||||
chmod 0777 -R /home/$pivpnUser/ovpns
|
||||
}
|
||||
|
||||
installPiVPN() {
|
||||
checkForDependencies
|
||||
stopServices
|
||||
$SUDO mkdir -p /etc/pivpn/
|
||||
getGitFiles
|
||||
installScripts
|
||||
confOpenVPN
|
||||
confNetwork
|
||||
confOVPN
|
||||
}
|
||||
|
||||
displayFinalMessage() {
|
||||
# Final completion message to user
|
||||
$SUDO systemctl enable openvpn.service
|
||||
$SUDO systemctl start openvpn.service
|
||||
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 $c
|
||||
printf "\nRebooting system...\n"
|
||||
sleep 3
|
||||
shutdown -r now
|
||||
fi
|
||||
}
|
||||
|
||||
######## SCRIPT ############
|
||||
# Start the installer
|
||||
welcomeDialogs
|
||||
|
||||
# Verify there is enough disk space for the install
|
||||
verifyFreeDiskSpace
|
||||
|
||||
# Find interfaces and let the user choose one
|
||||
chooseInterface
|
||||
getStaticIPv4Settings
|
||||
setStaticIPv4
|
||||
|
||||
# Choose the user for the ovpns
|
||||
chooseUser
|
||||
|
||||
# Install and log everything to a file
|
||||
installPiVPN
|
||||
|
||||
# Move the log file into /etc/pivpn for storage
|
||||
#$SUDO mv $tmpLog $installLogLoc
|
||||
|
||||
displayFinalMessage
|
||||
|
||||
echo "::: Install Complete..."
|
||||
Loading…
Add table
Add a link
Reference in a new issue