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pivpn/auto_install/install.sh

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#!/usr/bin/env bash
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# PiVPN: Trivial OpenVPN setup and configuration
# Easiest setup and mangement of OpenVPN on Raspberry Pi
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# http://pivpn.io
# Heavily adapted from the pi-hole.net project and...
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# https://github.com/StarshipEngineer/OpenVPN-Setup/
#
# Install with this command (from your Pi):
#
# curl -L https://install.pivpn.io | bash
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# Make sure you have `curl` installed
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######## VARIABLES #########
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pivpnGitUrl="https://github.com/pivpn/pivpn.git"
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pivpnFilesDir="/etc/.pivpn"
# Find the rows and columns
rows=$(tput lines)
columns=$(tput cols)
# Divide by two so the dialogs take up half of the screen, which looks nice.
r=$(( rows / 2 ))
c=$(( columns / 2 ))
# Find IP used to route to outside world
IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
IPv4addr=$(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}')
IPv4gw=$(ip route get 8.8.8.8 | awk '{print $3}')
availableInterfaces=$(ip -o link | awk '{print $2}' | grep -v "lo" | cut -d':' -f1)
dhcpcdFile=/etc/dhcpcd.conf
######## FIRST CHECK ########
# Must be root to install
echo ":::"
if [[ $EUID -eq 0 ]];then
echo "::: You are root."
else
echo "::: sudo will be used for the install."
# Check if it is actually installed
# If it isn't, exit because the install cannot complete
if [[ $(dpkg-query -s sudo) ]];then
export SUDO="sudo"
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export SUDOE="sudo -E"
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else
echo "::: Please install sudo or run this as root."
exit 1
fi
fi
# Next see if we are on a tested and supported OS
function noOS_Support() {
whiptail --msgbox --backtitle "INVALID OS DETECTED" --title "Invalid OS" "We have not been able to detect a supported OS.
Currently this installer supports Raspbian jessie, Ubuntu 14.04 (trusty), and Ubuntu 16.04 (xenial).
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
exit 1
}
function maybeOS_Support() {
if (whiptail --backtitle "Not Supported OS" --title "Not Supported OS" --yesno "You are on an OS that we have not tested but MAY work.
Currently this installer supports Raspbian jessie, Ubuntu 14.04 (trusty), and Ubuntu 16.04 (xenial).
Would you like to continue anyway?" $r $c) then
echo "::: Did not detect perfectly supported OS but,"
echo "::: Continuing installation at user's own risk..."
else
echo "::: Exiting due to unsupported OS"
exit 1
fi
}
# if lsb_release command is on their system
if hash lsb_release 2>/dev/null; then
PLAT=$(lsb_release -si)
OSCN=$(lsb_release -sc) # We want this to be trusty xenial or jessie
if [[ $PLAT == "Ubuntu" || $PLAT == "Raspbian" || $PLAT == "Debian" ]]; then
if [[ $OSCN != "trusty" && $OSCN != "xenial" && $OSCN != "jessie" ]]; then
maybeOS_Support
fi
else
noOS_Support
fi
# else get info from os-release
elif grep -q debian /etc/os-release; then
if grep -q jessie /etc/os-release; then
PLAT="Raspbian"
OSCN="jessie"
else
PLAT="Ubuntu"
OSCN="unknown"
maybeOS_Support
fi
# else we prob don't want to install
else
noOS_Support
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fi
echo "${PLAT}" > /tmp/DET_PLATFORM
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####### FUNCTIONS ##########
spinner()
{
local pid=$1
local delay=0.50
local spinstr='/-\|'
while ps a | awk '{print $1}' | grep -q "$pid"
do
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local temp=${spinstr#?}
printf " [%c] " "$spinstr"
local spinstr=$temp${spinstr%"$temp"}
sleep $delay
printf "\b\b\b\b\b\b"
done
printf " \b\b\b\b"
}
welcomeDialogs() {
# 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
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
}
chooseUser() {
# Explain the local user
whiptail --msgbox --backtitle "Parsing User List" --title "Local Users" "Choose a local user that will hold your ovpn configurations." $r $c
# First, let's check if there is a user available.
numUsers=$(awk -F':' 'BEGIN {count=0} $3>=500 && $3<=60000 { count++ } END{ print count }' /etc/passwd)
if [ "$numUsers" -eq 0 ]
then
# We don't have a user, let's ask to add one.
if userToAdd=$(whiptail --title "Choose A User" --inputbox "No non-root user account was found. Please type a new username." $r $c 3>&1 1>&2 2>&3)
then
# See http://askubuntu.com/a/667842/459815
PASSWORD=$(whiptail --title "password dialog" --passwordbox "Please enter the new user password" $r $c 3>&1 1>&2 2>&3)
CRYPT=$(perl -e 'printf("%s\n", crypt($ARGV[0], "password"))' "$password")
$SUDO useradd -m -p "$CRYPT" -s /bin/bash "$userToAdd"
if [ $? -eq 0 ]
then
echo "Succeeded"
((numUsers+=1))
else
exit 1
fi
else
exit 1
fi
fi
availableUsers=$(awk -F':' '$3>=500 && $3<=60000 {print $1}' /etc/passwd)
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userArray=()
firstloop=1
while read -r line
do
mode="OFF"
if [[ $firstloop -eq 1 ]]; then
firstloop=0
mode="ON"
fi
userArray+=("$line" "" "$mode")
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done <<< "$availableUsers"
chooseUserCmd=(whiptail --title "Choose A User" --separate-output --radiolist "Choose:" $r $c $numUsers)
if chooseUserOptions=$("${chooseUserCmd[@]}" "${userArray[@]}" 2>&1 >/dev/tty)
then
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for desiredUser in $chooseUserOptions
do
pivpnUser=$desiredUser
echo "::: Using User: $pivpnUser"
echo "${pivpnUser}" > /tmp/pivpnUSR
done
else
echo "::: Cancel selected, exiting...."
exit 1
fi
}
verifyFreeDiskSpace() {
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# If user installs unattended-upgrades we'd need about 60MB so will check for 75MB free
requiredFreeBytes=76800
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existingFreeBytes=$(df -lk / 2>&1 | awk '{print $4}' | head -2 | tail -1)
if ! [[ "$existingFreeBytes" =~ ^([0-9])+$ ]]; then
existingFreeBytes=$(df -lk /dev 2>&1 | awk '{print $4}' | head -2 | tail -1)
fi
if [[ $existingFreeBytes -lt $requiredFreeBytes ]]; then
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"
echo "Insufficient free space, exiting..."
exit 1
fi
}
chooseInterface() {
# Turn the available interfaces into an array so it can be used with a whiptail dialog
interfacesArray=()
firstloop=1
while read -r line
do
mode="OFF"
if [[ $firstloop -eq 1 ]]; then
firstloop=0
mode="ON"
fi
interfacesArray+=("$line" "available" "$mode")
done <<< "$availableInterfaces"
# Find out how many interfaces are available to choose from
interfaceCount=$(echo "$availableInterfaces" | wc -l)
chooseInterfaceCmd=(whiptail --separate-output --radiolist "Choose An Interface" $r $c $interfaceCount)
if chooseInterfaceOptions=$("${chooseInterfaceCmd[@]}" "${interfacesArray[@]}" 2>&1 >/dev/tty)
then
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for desiredInterface in $chooseInterfaceOptions
do
pivpnInterface=$desiredInterface
echo "::: Using interface: $pivpnInterface"
echo "${pivpnInterface}" > /tmp/pivpnINT
done
else
echo "::: Cancel selected, exiting...."
exit 1
fi
}
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avoidStaticIPv4Ubuntu() {
# 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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getStaticIPv4Settings() {
# Ask if the user wants to use DHCP settings as their static IP
if (whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Do you want to use your current network settings as a static address?
IP address: $IPv4addr
Gateway: $IPv4gw" $r $c) then
# If they choose yes, let the user know that the IP address will not be available via DHCP and may cause a conflict.
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.
If you are worried, either manually set the address, or modify the DHCP reservation pool so it does not include the IP you want.
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
# Nothing else to do since the variables are already set above
else
# Otherwise, we need to ask the user to input their desired settings.
# Start by getting the IPv4 address (pre-filling it with info gathered from DHCP)
# Start a loop to let the user enter their information with the chance to go back and edit it if necessary
until [[ $ipSettingsCorrect = True ]]
do
# Ask for the IPv4 address
if IPv4addr=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" $r $c "$IPv4addr" 3>&1 1>&2 2>&3)
then
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echo "::: Your static IPv4 address: $IPv4addr"
# Ask for the gateway
if IPv4gw=$(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)
then
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echo "::: Your static IPv4 gateway: $IPv4gw"
# Give the user a chance to review their settings before moving on
if (whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Are these settings correct?
IP address: $IPv4addr
Gateway: $IPv4gw" $r $c)then
# If the settings are correct, then we need to set the piVPNIP
# Saving it to a temporary file us to retrieve it later when we run the gravity.sh script
echo "${IPv4addr%/*}" > /tmp/pivpnIP
echo "$pivpnInterface" > /tmp/pivpnINT
# After that's done, the loop ends and we move on
ipSettingsCorrect=True
else
# If the settings are wrong, the loop continues
ipSettingsCorrect=False
fi
else
# Cancelling gateway settings window
ipSettingsCorrect=False
echo "::: Cancel selected. Exiting..."
exit 1
fi
else
# Cancelling IPv4 settings window
ipSettingsCorrect=False
echo "::: Cancel selected. Exiting..."
exit 1
fi
done
# End the if statement for DHCP vs. static
fi
}
setDHCPCD() {
# Append these lines to dhcpcd.conf to enable a static IP
echo "::: interface $pivpnInterface
static ip_address=$IPv4addr
static routers=$IPv4gw
static domain_name_servers=$IPv4gw" | $SUDO tee -a $dhcpcdFile >/dev/null
}
setStaticIPv4() {
# Tries to set the IPv4 address
if grep -q "$IPv4addr" $dhcpcdFile; then
# address already set, noop
:
else
setDHCPCD
$SUDO ip addr replace dev "$pivpnInterface" "$IPv4addr"
echo ":::"
echo "::: Setting IP to $IPv4addr. You may need to restart after the install is complete."
echo ":::"
fi
}
function valid_ip()
{
local ip=$1
local stat=1
if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
OIFS=$IFS
IFS='.'
ip=($ip)
IFS=$OIFS
[[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
&& ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
stat=$?
fi
return $stat
}
installScripts() {
# Install the scripts from /etc/.pivpn to their various locations
$SUDO echo ":::"
$SUDO echo -n "::: Installing scripts to /opt/pivpn..."
if [ ! -d /opt/pivpn ]; then
$SUDO mkdir /opt/pivpn
$SUDO chown "$pivpnUser":root /opt/pivpn
$SUDO chmod u+srwx /opt/pivpn
fi
$SUDO cp /etc/.pivpn/scripts/makeOVPN.sh /opt/pivpn/makeOVPN.sh
$SUDO cp /etc/.pivpn/scripts/listOVPN.sh /opt/pivpn/listOVPN.sh
$SUDO cp /etc/.pivpn/scripts/removeOVPN.sh /opt/pivpn/removeOVPN.sh
$SUDO cp /etc/.pivpn/scripts/uninstall.sh /opt/pivpn/uninstall.sh
$SUDO cp /etc/.pivpn/scripts/pivpnDebug.sh /opt/pivpn/pivpnDebug.sh
$SUDO chmod 0755 /opt/pivpn/{makeOVPN,listOVPN,removeOVPN,uninstall,pivpnDebug}.sh
$SUDO cp /etc/.pivpn/pivpn /usr/local/bin/pivpn
$SUDO chmod 0755 /usr/local/bin/pivpn
$SUDO cp /etc/.pivpn/scripts/bash-completion /etc/bash_completion.d/pivpn
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. /etc/bash_completion.d/pivpn
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$SUDO echo " done."
}
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
if (whiptail --backtitle "Security Updates" --title "Unattended Upgrades" --yesno "Do you want to enable unattended upgrades of security patches to this server?" $r $c) then
UNATTUPG="unattended-upgrades"
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$SUDO apt-get -y -qq --no-install-recommends install "$UNATTUPG" > /dev/null & spinner $!
else
UNATTUPG=""
fi
}
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stopServices() {
# Stop openvpn
$SUDO echo ":::"
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$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
else
$SUDO systemctl stop openvpn.service || true
fi
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$SUDO echo " done."
}
checkForDependencies() {
#Running apt-get update/upgrade with minimal output can cause some issues with
#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 available and
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# if so, advise the user to run apt-get update/upgrade at their own discretion
#Check to see if apt-get update has already been run today
# it needs to have been run at least once on new installs!
timestamp=$(stat -c %Y /var/cache/apt/)
timestampAsDate=$(date -d @"$timestamp" "+%b %e")
today=$(date "+%b %e")
if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
if [[ $OSCN == "trusty" || $OSCN == "jessie" || $OSCN == "wheezy" ]]; then
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg| $SUDO apt-key add -
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 ..."
$SUDO apt-get -qq update & spinner $!
echo " done!"
fi
fi
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if [ ! "$today" == "$timestampAsDate" ]; then
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#update package lists
echo ":::"
echo -n "::: apt-get update has not been run today. Running now..."
$SUDO apt-get -qq update & spinner $!
echo " done!"
fi
echo ":::"
echo -n "::: Checking apt-get for upgraded packages...."
updatesToInstall=$($SUDO apt-get -s -o Debug::NoLocking=true upgrade | grep -c ^Inst)
echo " done!"
echo ":::"
if [[ $updatesToInstall -eq "0" ]]; then
echo "::: Your pi is up to date! Continuing with PiVPN installation..."
else
echo "::: There are $updatesToInstall updates availible for your pi!"
echo "::: We recommend you run 'sudo apt-get upgrade' after installing PiVPN! "
echo ":::"
fi
echo ":::"
echo "::: Checking dependencies:"
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dependencies=( openvpn easy-rsa git iptables-persistent dnsutils expect whiptail )
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for i in "${dependencies[@]}"; do
echo -n "::: Checking for $i..."
if [ "$(dpkg-query -W -f='${Status}' "$i" 2>/dev/null | grep -c "ok installed")" -eq 0 ]; then
echo -n " Not found! Installing...."
#Supply answers to the questions so we don't prompt user
if [[ $i = "iptables-persistent" ]]; then
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echo iptables-persistent iptables-persistent/autosave_v4 boolean true | $SUDO debconf-set-selections
echo iptables-persistent iptables-persistent/autosave_v6 boolean false | $SUDO debconf-set-selections
fi
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if [[ $i = "expect" ]]; then
$SUDO apt-get -y -qq --no-install-recommends install "$i" > /dev/null & spinner $!
else
$SUDO apt-get -y -qq install "$i" > /dev/null & spinner $!
fi
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echo " done!"
else
echo " already installed!"
fi
done
}
getGitFiles() {
# Setup git repos for base files
echo ":::"
echo "::: Checking for existing base files..."
if is_repo $pivpnFilesDir; then
make_repo $pivpnFilesDir $pivpnGitUrl
else
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
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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
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:
else
$SUDO git -C "$1" checkout test
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fi
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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
${SUDOE} git checkout test
fi
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echo " done!"
}
setCustomProto() {
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# Set the available protocols into an array so it can be used with a whiptail dialog
if protocol=$(whiptail --title "Protocol" --radiolist \
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"Choose a protocol. Please only choose TCP if you know why you need TCP." $r $c 2 \
"UDP" "" ON \
"TCP" "" OFF 3>&1 1>&2 2>&3)
then
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# Convert option into lowercase (UDP->udp)
pivpnProto="${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 [ "$PROTO" = "udp" ]; then
DEFAULT_PORT=1194
else
DEFAULT_PORT=443
fi
if PORT=$(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 $DEFAULT_PORT 3>&1 1>&2 2>&3)
then
if [[ "$PORT" =~ ^[0-9]+$ ]] && [ "$PORT" -ge 1 ] && [ "$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
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# 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 $c 5)
DNSChooseOptions=(Google "" on
OpenDNS "" off
Level3 "" off
Norton "" off
Custom "" off)
if DNSchoices=$("${DNSChoseCmd[@]}" "${DNSChooseOptions[@]}" 2>&1 >/dev/tty)
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."
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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 [[ $DNSSettingsCorrect = True ]]
do
strInvalid="Invalid"
if OVPNDNS=$(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 $c "" 3>&1 1>&2 2>&3)
then
OVPNDNS1=$(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'${OVPNDNS2}'\"/' /etc/openvpn/server.conf
else
# If the settings are wrong, the loop continues
DNSSettingsCorrect=False
fi
fi
done
;;
esac
else
echo "::: Cancel selected. Exiting..."
exit 1
fi
}
confOpenVPN() {
# Ask user if want to modify default port
SERVER_NAME="server"
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# Ask user for desired level of encryption
ENCRYPT=$(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 $c 3 \
"2048" "Use 2048-bit encryption. Recommended level." ON \
"1024" "Use 1024-bit encryption. Test level." OFF \
"4096" "Use 4096-bit encryption. Paranoid level." OFF 3>&1 1>&2 2>&3)
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exitstatus=$?
if [ $exitstatus != 0 ]; then
echo "::: Cancel selected. Exiting..."
exit 1
fi
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# Copy the easy-rsa files to a directory inside the new openvpn directory
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$SUDO 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,
# And set the chosen key size
cd /etc/openvpn/easy-rsa || exit
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$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"
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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
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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
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for i in $CERTVAL
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do
if [ "$i" == '"COUNTRY"' ]; then
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COUNTRY=$(whiptail --title "Certificate Country" --inputbox \
"Enter a 2 letter abbreviation for Country" $r $c US 3>&1 1>&2 2>&3)
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$SUDO sed -i "s/\(KEY_COUNTRY=\"\).*/\1${COUNTRY}\"/" vars
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fi
if [ "$i" == '"STATE"' ]; then
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STATE=$(whiptail --title "Certificate State" --inputbox \
"Enter a 2 letter abbreviated State or Province" $r $c CA 3>&1 1>&2 2>&3)
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$SUDO sed -i "s/\(KEY_PROVINCE=\"\).*/\1${STATE}\"/" vars
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fi
if [ "$i" == '"CITY"' ]; then
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CITY=$(whiptail --title "Certificate City" --inputbox \
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"Enter a City name" $r $c SanFrancisco 3>&1 1>&2 2>&3)
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$SUDO sed -i "s/\(KEY_CITY=\"\).*/\1${CITY}\"/" vars
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fi
if [ "$i" == '"ORG"' ]; then
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ORG=$(whiptail --title "Certificate Org" --inputbox \
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"Enter an Organization name" $r $c Fort-Funston 3>&1 1>&2 2>&3)
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$SUDO sed -i "s/\(KEY_ORG=\"\).*/\1${ORG}\"/" vars
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fi
if [ "$i" == '"EMAIL"' ]; then
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EMAIL=$(whiptail --title "Certificate Email" --inputbox \
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"Enter an Email Address" $r $c "me@myhost.mydomain" 3>&1 1>&2 2>&3)
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$SUDO sed -i "s/\(KEY_EMAIL=\"\).*/\1${EMAIL}\"/" vars
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fi
if [ "$i" == '"SERVER_NAME"' ]; then
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SERVER_NAME=$(whiptail --title "Server Name" --inputbox \
"Enter a Server Name" $r $c "pivpn" 3>&1 1>&2 2>&3)
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# This began a rabbit hole of errors. Nope.
#sed -i '/export KEY_CN/s/^#//g' vars
#sed -i "s/\(KEY_CN=\"\).*/\1${SERVER_NAME}\"/" vars
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fi
if [ "$i" == '"KEY_NAME"' ]; then
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KEY_NAME=$(whiptail --title "Key Name" --inputbox \
"Enter a Key Name" $r $c "EasyRSA" 3>&1 1>&2 2>&3)
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$SUDO sed -i "s/\(KEY_NAME=\"\).*/\1${KEY_NAME}\"/" vars
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fi
done
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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 $c) then
CERTVALCorrect=True
else
CERTVALCorrect=False
fi
done
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# Make PiVPN the OU
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KEY_OU=PiVPN
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$SUDO sed -i "s/\(KEY_OU=\"\).*/\1${KEY_OU}\"/" vars
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# It seems you have to set this if you mess with key_cn, lets not.
# grep -q 'KEY_ALTNAMES=' vars || printf '\nexport KEY_ALTNAMES="PiVPN_KEYALT"\n' >> vars
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echo "export KEY_ALTNAMES=\"PiVPN_ALTNAME\"" >> vars
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# source the vars file just edited
source ./vars
# Remove any previous keys
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${SUDOE} ./clean-all
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# Build the certificate authority
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echo "::: Building CA..."
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${SUDOE} ./build-ca < /etc/.pivpn/ca_info.txt
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printf "\n::: CA Complete.\n"
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whiptail --msgbox --backtitle "Setup OpenVPN" --title "Server Information" "The server key, Diffie-Hellman key, and HMAC key will now be generated." $r $c
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# Build the server
${SUDOE} ./build-key-server --batch "$SERVER_NAME"
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if ([ "$ENCRYPT" -ge "4096" ] && whiptail --backtitle "Setup OpenVPN" --title "Download Diffie-Hellman Parameters" --yesno --defaultno "Download Diffie-Hellman parameters from a public DH parameter generation service?\n\nGenerating DH parameters for a $ENCRYPT-bit key can take many hours on a Raspberry Pi. You can instead download DH parameters from \"2 Ton Digital\" that are generated at regular intervals as part of a public service. Downloaded DH parameters will be randomly selected from a pool of the last 128 generated.\nMore information about this service can be found here: https://2ton.com.au/dhtool/\n\nIf you're paranoid, choose 'No' and Diffie-Hellman parameters will be generated on your device." $r $c)
2016-10-09 16:37:28 +00:00
then
# Downloading parameters, $KEY_DIR and $KEY_SIZE get set by sourcing ./vars
RANDOM_INDEX=$(( RANDOM % 128 ))
${SUDOE} curl "https://2ton.com.au/dhparam/${ENCRYPT}/${RANDOM_INDEX}" -o "${KEY_DIR}/dh${KEY_SIZE}.pem"
2016-10-09 16:37:28 +00:00
else
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# Generate Diffie-Hellman key exchange
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${SUDOE} ./build-dh
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fi
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# Generate static HMAC key to defend against DDoS
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${SUDOE} openvpn --genkey --secret keys/ta.key
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# Write config file for server using the template .txt file
LOCALIP=$(ifconfig "$pivpnInterface" | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*')
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$SUDO cp /etc/.pivpn/server_config.txt /etc/openvpn/server.conf
2016-04-21 16:28:48 +00:00
$SUDO sed -i "s/LOCALIP/${LOCALIP}/g" /etc/openvpn/server.conf
2016-04-28 00:54:51 +00:00
# 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
2016-04-21 16:28:48 +00:00
$SUDO sed -i "s/1194/${PORT}/g" /etc/openvpn/server.conf
fi
2016-09-27 12:31:41 +00:00
# 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
2016-04-19 18:01:55 +00:00
}
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 | $SUDO tee /etc/apt/apt.conf.d/02periodic >/dev/null
APT::Periodic::Enable "1";
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::Unattended-Upgrade "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Verbose "0";
EOT
fi
fi
}
2016-04-19 18:01:55 +00:00
confNetwork() {
# Enable forwarding of internet traffic
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$SUDO sed -i '/net.ipv4.ip_forward=1/s/^#//g' /etc/sysctl.conf
2016-04-19 18:01:55 +00:00
$SUDO sysctl -p
# if ufw enabled, configure that
if hash ufw 2>/dev/null; then
if $SUDO ufw status | grep -q inactive
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}"
2016-05-16 03:36:40 +00:00
$SUDO ufw allow from 10.8.0.0/24
$SUDO ufw reload
echo "::: UFW configuration completed."
fi
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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
2016-05-25 21:58:08 +00:00
if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
$SUDO iptables-save | $SUDO tee /etc/iptables/rules.v4 > /dev/null
else
$SUDO netfilter-persistent save
fi
else
echo 0 > /tmp/noUFW
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fi
$SUDO cp /tmp/noUFW /etc/pivpn/NO_UFW
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}
confOVPN() {
if ! IPv4pub=$(dig +short myip.opendns.com @resolver1.opendns.com)
2016-10-09 16:27:45 +00:00
then
echo "dig failed, now trying to curl eth0.me"
if ! IPv4pub=$(curl eth0.me)
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then
echo "eth0.me failed, please check your internet connection/DNS"
exit $?
fi
fi
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$SUDO cp /tmp/pivpnUSR /etc/pivpn/INSTALL_USER
$SUDO cp /tmp/DET_PLATFORM /etc/pivpn/DET_PLATFORM
2016-04-19 18:01:55 +00:00
# Set status that no certs have been revoked
2016-04-21 16:50:15 +00:00
echo 0 > /tmp/REVOKE_STATUS
$SUDO cp /tmp/REVOKE_STATUS /etc/pivpn/REVOKE_STATUS
2016-04-19 18:01:55 +00:00
METH=$(whiptail --title "Public IP or DNS" --radiolist "Will clients use a Public IP or DNS Name to connect to your server?" $r $c 2 \
2016-04-19 18:01:55 +00:00
"$IPv4pub" "Use this public IP" "ON" \
"DNS Entry" "Use a public DNS" "OFF" 3>&1 1>&2 2>&3)
2016-04-19 18:01:55 +00:00
exitstatus=$?
if [ $exitstatus != 0 ]; then
echo "::: Cancel selected. Exiting..."
2016-04-19 18:01:55 +00:00
exit 1
fi
2016-04-21 16:50:15 +00:00
$SUDO cp /etc/.pivpn/Default.txt /etc/openvpn/easy-rsa/keys/Default.txt
2016-04-19 18:01:55 +00:00
if [ "$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..."
2016-04-19 18:01:55 +00:00
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
2016-04-19 18:01:55 +00:00
fi
# if they modified port put value in Default.txt for clients to use
if [ $PORT != 1194 ]; then
2016-04-21 13:37:27 +00:00
$SUDO sed -i -e "s/1194/${PORT}/g" /etc/openvpn/easy-rsa/keys/Default.txt
fi
2016-09-27 12:31:41 +00:00
# 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"
2016-04-19 18:01:55 +00:00
}
installPiVPN() {
stopServices
confUnattendedUpgrades
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$SUDO mkdir -p /etc/pivpn/
getGitFiles
installScripts
setCustomProto
setCustomPort
2016-04-19 18:01:55 +00:00
confOpenVPN
confNetwork
confOVPN
setClientDNS
2016-04-19 18:01:55 +00:00
}
displayFinalMessage() {
# Final completion message to user
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if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
2016-04-22 19:16:48 +00:00
$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.
2016-04-19 18:01:55 +00:00
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 $c
printf "\nRebooting system...\n"
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$SUDO sleep 3
$SUDO shutdown -r now
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fi
}
######## SCRIPT ############
2016-11-05 13:42:37 +00:00
# Install the packages (we do this first because we need whiptail)
checkForDependencies
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# Start the installer
welcomeDialogs
# Verify there is enough disk space for the install
verifyFreeDiskSpace
# Find interfaces and let the user choose one
chooseInterface
2016-04-22 19:16:48 +00:00
# Only try to set static on Raspbian, otherwise let user do it
if [[ $PLAT != "Raspbian" ]]; then
2016-04-22 19:16:48 +00:00
avoidStaticIPv4Ubuntu
else
getStaticIPv4Settings
setStaticIPv4
fi
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# Choose the user for the ovpns
chooseUser
# Ask if unattended-upgrades will be enabled
unattendedUpgrades
# Install
2016-04-19 18:01:55 +00:00
installPiVPN
displayFinalMessage
echo "::: Install Complete..."