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pi-hole/automated install/basic-install.sh

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#!/usr/bin/env bash
# Pi-hole: A black hole for Internet advertisements
# (c) 2015, 2016 by Jacob Salmela
# Network-wide ad blocking via your Raspberry Pi
# http://pi-hole.net
# Installs Pi-hole
#
# Pi-hole is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
# pi-hole.net/donate
#
# Install with this command (from your Pi):
#
# curl -L install.pi-hole.net | bash
######## VARIABLES #########
tmpLog=/tmp/pihole-install.log
instalLogLoc=/etc/pihole/install.log
webInterfaceGitUrl="https://github.com/pi-hole/AdminLTE.git"
webInterfaceDir="/var/www/html/admin"
piholeGitUrl="https://github.com/pi-hole/pi-hole.git"
piholeFilesDir="/etc/.pihole"
# 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"
else
echo "::: Please install sudo or run this as root."
exit 1
fi
fi
if [ -d "/etc/pihole" ]; then
# Likely an existing install
upgrade=true
else
upgrade=false
fi
####### FUNCTIONS ##########
###All credit for the below function goes to http://fitnr.com/showing-a-bash-spinner.html
spinner() {
local pid=$1
spin='-\|/'
i=0
while $SUDO kill -0 $pid 2>/dev/null
do
i=$(( (i+1) %4 ))
printf "\b${spin:$i:1}"
sleep .1
done
printf "\b"
}
backupLegacyPihole() {
# This function detects and backups the pi-hole v1 files. It will not do anything to the current version files.
if [[ -f /etc/dnsmasq.d/adList.conf ]];then
echo "::: Original Pi-hole detected. Initiating sub space transport"
$SUDO mkdir -p /etc/pihole/original/
$SUDO mv /etc/dnsmasq.d/adList.conf /etc/pihole/original/adList.conf.$(date "+%Y-%m-%d")
$SUDO mv /etc/dnsmasq.conf /etc/pihole/original/dnsmasq.conf.$(date "+%Y-%m-%d")
$SUDO mv /etc/resolv.conf /etc/pihole/original/resolv.conf.$(date "+%Y-%m-%d")
$SUDO mv /etc/lighttpd/lighttpd.conf /etc/pihole/original/lighttpd.conf.$(date "+%Y-%m-%d")
$SUDO mv /var/www/pihole/index.html /etc/pihole/original/index.html.$(date "+%Y-%m-%d")
$SUDO mv /usr/local/bin/gravity.sh /etc/pihole/original/gravity.sh.$(date "+%Y-%m-%d")
else
:
fi
}
welcomeDialogs() {
# Display the welcome dialog
whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "This installer will transform your Raspberry Pi into a network-wide ad blocker!" $r $c
# Support for a part-time dev
whiptail --msgbox --backtitle "Plea" --title "Free and open source" "The Pi-hole is free, but powered by your donations: http://pi-hole.net/donate" $r $c
# Explain the need for a static address
whiptail --msgbox --backtitle "Initating network interface" --title "Static IP Needed" "The Pi-hole is a SERVER so it needs a STATIC IP ADDRESS to function properly.
In the next section, you can choose to use your current network settings (DHCP) or to manually edit them." $r $c
}
verifyFreeDiskSpace() {
# 25MB is the minimum space needed (20MB install + 5MB one day of logs.)
requiredFreeBytes=25600
existingFreeBytes=`df -lkP / | awk '{print $4}' | tail -1`
if [[ $existingFreeBytes -lt $requiredFreeBytes ]]; then
whiptail --msgbox --backtitle "Insufficient Disk Space" --title "Insufficient Disk Space" "\nYour system appears to be low on disk space. pi-hole 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 install.pi-hole.net | bash\n" $r $c
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 $interfaceCount)
chooseInterfaceOptions=$("${chooseInterfaceCmd[@]}" "${interfacesArray[@]}" 2>&1 >/dev/tty)
if [[ $? = 0 ]];then
for desiredInterface in $chooseInterfaceOptions
do
piholeInterface=$desiredInterface
echo "::: Using interface: $piholeInterface"
echo ${piholeInterface} > /tmp/piholeINT
done
else
echo "::: Cancel selected, exiting...."
exit 1
fi
}
cleanupIPv6() {
# Removes IPv6 indicator file if we are not using IPv6
if [ -f "/etc/pihole/.useIPv6" ] && [ ! $useIPv6 ]; then
rm /etc/pihole/.useIPv6
fi
}
use4andor6() {
# Let use select IPv4 and/or IPv6
cmd=(whiptail --separate-output --checklist "Select Protocols" $r $c 2)
options=(IPv4 "Block ads over IPv4" on
IPv6 "Block ads over IPv6" off)
choices=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty)
if [[ $? = 0 ]];then
for choice in $choices
do
case $choice in
IPv4 ) useIPv4=true;;
IPv6 ) useIPv6=true;;
esac
done
if [ $useIPv4 ] && [ ! $useIPv6 ]; then
getStaticIPv4Settings
setStaticIPv4
echo "::: Using IPv4 on $IPv4addr"
echo "::: IPv6 will NOT be used."
fi
if [ ! $useIPv4 ] && [ $useIPv6 ]; then
useIPv6dialog
echo "::: IPv4 will NOT be used."
echo "::: Using IPv6 on $piholeIPv6"
fi
if [ $useIPv4 ] && [ $useIPv6 ]; then
getStaticIPv4Settings
setStaticIPv4
useIPv6dialog
echo "::: Using IPv4 on $IPv4addr"
echo "::: Using IPv6 on $piholeIPv6"
fi
if [ ! $useIPv4 ] && [ ! $useIPv6 ]; then
echo "::: Cannot continue, neither IPv4 or IPv6 selected"
echo "::: Exiting"
exit 1
fi
cleanupIPv6
else
echo "::: Cancel selected. Exiting..."
exit 1
fi
}
useIPv6dialog() {
# Show the IPv6 address used for blocking
piholeIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$piholeIPv6 will be used to block ads." $r $c
$SUDO touch /etc/pihole/.useIPv6
}
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 [[ $ipSettingsCorrect = True ]]
do
# Ask for the IPv4 address
IPv4addr=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" $r $c $IPv4addr 3>&1 1>&2 2>&3)
if [[ $? = 0 ]];then
echo "::: Your static IPv4 address: $IPv4addr"
# Ask for the gateway
IPv4gw=$(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)
if [[ $? = 0 ]];then
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 piholeIP
# Saving it to a temporary file us to retrieve it later when we run the gravity.sh script
echo ${IPv4addr%/*} > /tmp/piholeIP
echo $piholeInterface > /tmp/piholeINT
# 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 $piholeInterface
static ip_address=$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 $piholeInterface $IPv4addr
echo ":::"
echo "::: Setting IP to $IPv4addr. You may need to restart after the install is complete."
echo ":::"
fi
}
setDNS(){
DNSChoseCmd=(whiptail --separate-output --radiolist "Select Upstream DNS Provider" $r $c 6)
DNSChooseOptions=(Google "" on
OpenDNS "" off
Level3 "" off
Norton "" off
Comodo "" off)
Other "" off)
DNSchoices=$("${DNSChoseCmd[@]}" "${DNSChooseOptions[@]}" 2>&1 >/dev/tty)
if [[ $? = 0 ]];then
case $DNSchoices in
Google)
echo "::: Using Google DNS servers."
piholeDNS1="8.8.8.8"
piholeDNS2="8.8.4.4"
;;
OpenDNS)
echo "::: Using OpenDNS servers."
piholeDNS1="208.67.222.222"
piholeDNS2="208.67.220.220"
;;
Level3)
echo "::: Using Level3 servers."
piholeDNS1="4.2.2.1"
piholeDNS2="4.2.2.2"
;;
Norton)
echo "::: Using Norton ConnectSafe servers."
piholeDNS1="199.85.126.10"
piholeDNS2="199.85.127.10"
;;
Comodo)
echo "::: Using Comodo Secure servers."
piholeDNS1="8.26.56.26"
piholeDNS2="8.20.247.20"
;;
Other)
until [[ $DNSSettingsCorrect = True ]]
do
piholeDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)" --inputbox "Enter your desired upstream DNS provider(s)" $r $c "8.8.8.8, 8.8.4.4" 3>&1 1>&2 2>&3)
piholeDNS1=$(echo $piholeDNS | sed 's/[, \t]\+/,/g' | awk -F, '{print$1}')
piholeDNS2=$(echo $piholeDNS | sed 's/[, \t]\+/,/g' | awk -F, '{print$2}')
if (whiptail --backtitle "Specify Upstream DNS Provider(s)" --title "Upstream DNS Provider(s)" --yesno "Are these settings correct?
DNS Server 1: $piholeDNS1
DNS Server 2: $piholeDNS2" $r $c) then
DNSSettingsCorrect=True
else
# If the settings are wrong, the loop continues
DNSSettingsCorrect=False
fi
done
;;
esac
else
echo "::: Cancel selected. Exiting..."
exit 1
fi
}
versionCheckDNSmasq(){
# Check if /etc/dnsmasq.conf is from pihole. If so replace with an original and install new in .d directory
dnsFile1="/etc/dnsmasq.conf"
dnsFile2="/etc/dnsmasq.conf.orig"
dnsSearch="addn-hosts=/etc/pihole/gravity.list"
defaultFile="/etc/.pihole/advanced/dnsmasq.conf.original"
newFileToInstall="/etc/.pihole/advanced/01-pihole.conf"
newFileFinalLocation="/etc/dnsmasq.d/01-pihole.conf"
if [ -f $dnsFile1 ]; then
echo -n "::: Existing dnsmasq.conf found..."
if grep -q $dnsSearch $dnsFile1; then
echo " it is from a previous pi-hole install."
echo -n "::: Backing up dnsmasq.conf to dnsmasq.conf.orig..."
$SUDO mv -f $dnsFile1 $dnsFile2
echo " done."
echo -n "::: Restoring default dnsmasq.conf..."
$SUDO cp $defaultFile $dnsFile1
echo " done."
else
echo " it is not a pi-hole file, leaving alone!"
fi
else
echo -n "::: No dnsmasq.conf found.. restoring default dnsmasq.conf..."
$SUDO cp $defaultFile $dnsFile1
echo " done."
fi
echo -n "::: Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf..."
$SUDO cp $newFileToInstall $newFileFinalLocation
echo " done."
$SUDO sed -i "s/@INT@/$piholeInterface/" $newFileFinalLocation
if [[ "$piholDNS1" != "" ]]; then
$SUDO sed -i "s/@DNS1@/$piholeDNS1/" $newFileFinalLocation
else
$SUDO sed -i '/^server=@DNS1@/d' $newFileFinalLocation
fi
if [[ "$piholDNS2" != "" ]]; then
$SUDO sed -i "s/@DNS2@/$piholeDNS2/" $newFileFinalLocation
else
$SUDO sed -i '/^server=@DNS2@/d' $newFileFinalLocation
fi
}
installScripts() {
# Install the scripts from /etc/.pihole to their various locations
$SUDO echo ":::"
$SUDO echo -n "::: Installing scripts..."
$SUDO cp /etc/.pihole/gravity.sh /usr/local/bin/gravity.sh
$SUDO cp /etc/.pihole/advanced/Scripts/chronometer.sh /usr/local/bin/chronometer.sh
$SUDO cp /etc/.pihole/advanced/Scripts/whitelist.sh /usr/local/bin/whitelist.sh
$SUDO cp /etc/.pihole/advanced/Scripts/blacklist.sh /usr/local/bin/blacklist.sh
$SUDO cp /etc/.pihole/advanced/Scripts/piholeLogFlush.sh /usr/local/bin/piholeLogFlush.sh
$SUDO cp /etc/.pihole/advanced/Scripts/updateDashboard.sh /usr/local/bin/updateDashboard.sh
$SUDO chmod 755 /usr/local/bin/{gravity,chronometer,whitelist,blacklist,piholeLogFlush,updateDashboard}.sh
$SUDO echo " done."
}
installConfigs() {
# Install the configs from /etc/.pihole to their various locations
$SUDO echo ":::"
$SUDO echo "::: Installing configs..."
versionCheckDNSmasq
$SUDO mv /etc/lighttpd/lighttpd.conf /etc/lighttpd/lighttpd.conf.orig
$SUDO cp /etc/.pihole/advanced/lighttpd.conf /etc/lighttpd/lighttpd.conf
}
stopServices() {
# Stop dnsmasq and lighttpd
$SUDO echo ":::"
$SUDO echo -n "::: Stopping services..."
#$SUDO service dnsmasq stop & spinner $! || true
$SUDO service lighttpd stop & spinner $! || true
$SUDO echo " done."
}
checkForDependencies() {
#Running apt-get update/upgrade with minimal output can cause some issues with
#requiring user input (e.g password for phpmyadmin see #218)
#We'll change the logic up here, to check to see if there are any updates availible and
# if so, advise the user to run apt-get update/upgrade at their own discretion
#Check to see if apt-get update has already been run today
# it needs to have been run at least once on new installs!
timestamp=$(stat -c %Y /var/cache/apt/)
timestampAsDate=$(date -d @$timestamp "+%b %e")
today=$(date "+%b %e")
if [ ! "$today" == "$timestampAsDate" ]; then
#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 pi-hole installation..."
else
echo "::: There are $updatesToInstall updates availible for your pi!"
echo "::: We recommend you run 'sudo apt-get upgrade' after installing Pi-Hole! "
echo ":::"
fi
echo ":::"
echo "::: Checking dependencies:"
dependencies=( dnsutils bc toilet figlet dnsmasq lighttpd php5-common php5-cgi php5 git curl unzip wget )
for i in "${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...."
$SUDO apt-get -y -qq install $i > /dev/null & spinner $!
echo " done!"
else
echo " already installed!"
fi
done
}
getGitFiles() {
# Setup git repos for base files and web admin
echo ":::"
echo "::: Checking for existing base files..."
if is_repo $piholeFilesDir; then
make_repo $piholeFilesDir $piholeGitUrl
else
update_repo $piholeFilesDir
fi
echo ":::"
echo "::: Checking for existing web interface..."
if is_repo $webInterfaceDir; then
make_repo $webInterfaceDir $webInterfaceGitUrl
else
update_repo $webInterfaceDir
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-repod interface and clone the interface
echo -n "::: Cloning $2 into $1..."
$SUDO rm -rf $1
$SUDO git clone -q "$2" "$1" > /dev/null & spinner $!
echo " done!"
}
update_repo() {
# Pull the latest commits
echo -n "::: Updating repo in $1..."
cd "$1"
$SUDO git pull -q > /dev/null & spinner $!
echo " done!"
}
CreateLogFile() {
# Create logfiles if necessary
echo ":::"
$SUDO echo -n "::: Creating log file and changing owner to dnsmasq..."
if [ ! -f /var/log/pihole.log ]; then
$SUDO touch /var/log/pihole.log
$SUDO chmod 644 /var/log/pihole.log
$SUDO chown dnsmasq:root /var/log/pihole.log
$SUDO echo " done!"
else
$SUDO echo " already exists!"
fi
}
installPiholeWeb() {
# Install the web interface
$SUDO echo ":::"
$SUDO echo -n "::: Installing pihole custom index page..."
if [ -d "/var/www/html/pihole" ]; then
$SUDO echo " Existing page detected, not overwriting"
else
$SUDO mkdir /var/www/html/pihole
$SUDO mv /var/www/html/index.lighttpd.html /var/www/html/index.lighttpd.orig
$SUDO cp /etc/.pihole/advanced/index.html /var/www/html/pihole/index.html
$SUDO echo " done!"
fi
}
installCron() {
# Install the cron job
$SUDO echo ":::"
$SUDO echo -n "::: Installing latest Cron script..."
$SUDO cp /etc/.pihole/advanced/pihole.cron /etc/cron.d/pihole
$SUDO echo " done!"
}
runGravity() {
# Rub gravity.sh to build blacklists
$SUDO echo ":::"
$SUDO echo "::: Preparing to run gravity.sh to refresh hosts..."
if ls /etc/pihole/list* 1> /dev/null 2>&1; then
echo "::: Cleaning up previous install (preserving whitelist/blacklist)"
$SUDO rm /etc/pihole/list.*
fi
#Don't run as SUDO, this was causing issues
echo "::: Running gravity.sh"
echo ":::"
/usr/local/bin/gravity.sh
}
installPihole() {
# Install base files and web interface
checkForDependencies # done
stopServices
$SUDO mkdir -p /etc/pihole/
$SUDO chown www-data:www-data /var/www/html
$SUDO chmod 775 /var/www/html
$SUDO usermod -a -G www-data pi
$SUDO lighty-enable-mod fastcgi fastcgi-php > /dev/null
getGitFiles
installScripts
installConfigs
#installWebAdmin
CreateLogFile
installPiholeWeb
installCron
runGravity
}
displayFinalMessage() {
# Final completion message to user
whiptail --msgbox --backtitle "Make it so." --title "Installation Complete!" "Configure your devices to use the Pi-hole as their DNS server using:
$IPv4addr
$piholeIPv6
If you set a new IP address, you should restart the Pi.
The install log is in /etc/pihole." $r $c
}
######## SCRIPT ############
# Start the installer
$SUDO mkdir -p /etc/pihole/
welcomeDialogs
# Verify there is enough disk space for the install
verifyFreeDiskSpace
# Just back up the original Pi-hole right away since it won't take long and it gets it out of the way
backupLegacyPihole
# Find interfaces and let the user choose one
chooseInterface
# Let the user decide if they want to block ads over IPv4 and/or IPv6
use4andor6
# Decide what upstream DNS Servers to use
setDNS
# Install and log everything to a file
installPihole | tee $tmpLog
# Move the log file into /etc/pihole for storage
$SUDO mv $tmpLog $instalLogLoc
displayFinalMessage
echo -n "::: Restarting services..."
# Start services
$SUDO service dnsmasq restart
$SUDO service lighttpd start
echo " done."
echo ":::"
echo "::: Installation Complete! Configure your devices to use the Pi-hole as their DNS server using:"
echo "::: $IPv4addr"
echo "::: $piholeIPv6"
echo ":::"
echo "::: If you set a new IP address, you should restart the Pi."
echo "::: "
echo "::: The install log is located at: /etc/pihole/install.log"
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