#!/usr/bin/env bash # Pi-hole: A black hole for Internet advertisements # by Jacob Salmela # Network-wide ad blocking via your Raspberry Pi # # (c) 2015 by Jacob Salmela # This file is part of 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 [ -f "/etc/dnsmasq.d/01-pihole.conf" ]; 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(){ 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 } 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) for desiredInterface in $chooseInterfaceOptions do piholeInterface=$desiredInterface echo "::: Using interface: $piholeInterface" echo ${piholeInterface} > /tmp/piholeINT done } 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) 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 ] && [ ! $useIPv6 ]; then echo "::: Cannot continue, neither IPv4 or IPv6 selected" echo "::: Exiting" exit 1 fi } useIPv6dialog(){ piholeIPv6=$(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 mkdir -p /etc/pihole/ $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 "User canceled." exit fi else # Cancelling IPv4 settings window ipSettingsCorrect=False echo "User canceled." exit 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(){ if grep -q $IPv4addr $dhcpcdFile; then # address already set, noop : else setDHCPCD $SUDO ip addr replace dev $piholeInterface $IPv4addr echo "Setting IP to $IPv4addr. You may need to restart after the install is complete." fi } installScripts(){ $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(){ $SUDO echo ":::" $SUDO echo -n "::: Installing configs..." $SUDO mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig $SUDO mv /etc/lighttpd/lighttpd.conf /etc/lighttpd/lighttpd.conf.orig $SUDO cp /etc/.pihole/advanced/dnsmasq.conf /etc/dnsmasq.conf $SUDO cp /etc/.pihole/advanced/lighttpd.conf /etc/lighttpd/lighttpd.conf $SUDO sed -i "s/@INT@/$piholeInterface/" /etc/dnsmasq.conf $SUDO echo " done." } stopServices(){ $SUDO echo ":::" $SUDO echo -n "::: Stopping services..." $SUDO service dnsmasq stop & spinner $! || true $SUDO service lighttpd stop & spinner $! || true $SUDO echo " done." } checkForDependencies(){ #Running apt-get update/upgrade with minimal output can cause some issues with #requiring user input (e.g password for phpmyadmin see #218) #We'll change the logic up here, to check to see if there are any updates availible and # if so, advise the user to run apt-get update/upgrade at their own discretion today=$(date "+%b %e") echo ":::" echo -n "::: Checking apt-get for upgraded packages...." updatesToInstall=$(sudo apt-get -s -o Debug::NoLocking=true upgrade | grep -c ^Inst) & spinner $! echo " done!" echo ":::" if [ $updatesToInstall > 0 ]; then echo "::: There are $updatesToInstall updates availible for your pi!" echo "::: Please consider running 'sudo apt-get update', followed by 'sudo apt-get upgrade'" echo "::: after pi-hole has finished installing." echo ":::" #add in a prompt to give users the option to quit installation or continue echo -n "::: Would you like to continue with the pi-hole installation? (Y/n):" read answer case "$answer" in [yY][eE][sS]|[yY] ) echo "::: Continuing!";; * ) echo "::: Quitting install, please run 'curl -L install.pi-hole.net | bash' after updating packages!" exit 0;; esac else echo "::: Your pi is up to date! Continuing with pi-hole installation..." 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(){ 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() { echo -n "::: Checking $1 is a repo..." # if the directory does not have a .git folder # it is not 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(){ 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(){ $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(){ $SUDO echo ":::" $SUDO echo -n "::: Installing latest Cron script..." $SUDO cp /etc/.pihole/advanced/pihole.cron /etc/cron.d/pihole $SUDO echo " done!" } runGravity(){ $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(){ checkForDependencies # done stopServices $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(){ 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 welcomeDialogs # 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 # Install and log everything to a file installPihole | tee $tmpLog # Move the log file into /etc/pihole for storage $SUDO mv $tmpLog $instalLogLoc displayFinalMessage $SUDO service dnsmasq start $SUDO service lighttpd start