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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
set -e
######## VARIABLES #########
tmpLog=/tmp/pihole-install.log
instalLogLoc=/etc/pihole/install.log
setupVars=/etc/pihole/setupVars.conf
lighttpdConfig=/etc/lighttpd/lighttpd.conf
webInterfaceGitUrl="https://github.com/pi-hole/AdminLTE.git"
webInterfaceDir="/var/www/html/admin"
piholeGitUrl="https://github.com/pi-hole/pi-hole.git"
PI_HOLE_LOCAL_REPO="/etc/.pihole"
PI_HOLE_FILES=(chronometer list piholeDebug piholeLogFlush setupLCD update version)
useUpdateVars=false
IPV4_ADDRESS=""
IPV6_ADDRESS=""
QUERY_LOGGING=true
# Find the rows and columns will default to 80x24 is it can not be detected
screen_size=$(stty size 2>/dev/null || echo 24 80)
rows=$(echo "${screen_size}" | awk '{print $1}')
columns=$(echo "${screen_size}" | awk '{print $2}')
# Divide by two so the dialogs take up half of the screen, which looks nice.
r=$(( rows / 2 ))
c=$(( columns / 2 ))
# Unless the screen is tiny
r=$(( r < 20 ? 20 : r ))
c=$(( c < 70 ? 70 : c ))
######## Undocumented Flags. Shhh ########
skipSpaceCheck=false
reconfigure=false
runUnattended=false
# Compatibility
if command -v apt-get &> /dev/null; then
#Debian Family
#############################################
PKG_MANAGER="apt-get"
UPDATE_PKG_CACHE="${PKG_MANAGER} update"
PKG_INSTALL="${PKG_MANAGER} --yes --no-install-recommends install"
# grep -c will return 1 retVal on 0 matches, block this throwing the set -e with an OR TRUE
PKG_COUNT="${PKG_MANAGER} -s -o Debug::NoLocking=true upgrade | grep -c ^Inst || true"
# #########################################
# fixes for dependancy differences
# Debian 7 doesn't have iproute2 use iproute
${PKG_MANAGER} install --dry-run iproute2 > /dev/null 2>&1 && IPROUTE_PKG="iproute2" || IPROUTE_PKG="iproute"
# Prefer the php metapackage if it's there, fall back on the php5 pacakges
${PKG_MANAGER} install --dry-run php > /dev/null 2>&1 && phpVer="php" || phpVer="php5"
# #########################################
INSTALLER_DEPS=(apt-utils debconf dhcpcd5 git whiptail)
PIHOLE_DEPS=(bc cron curl dnsmasq dnsutils ${IPROUTE_PKG} iputils-ping lighttpd lsof netcat ${phpVer}-common ${phpVer}-cgi sudo unzip wget)
LIGHTTPD_USER="www-data"
LIGHTTPD_GROUP="www-data"
LIGHTTPD_CFG="lighttpd.conf.debian"
DNSMASQ_USER="dnsmasq"
elif command -v rpm &> /dev/null; then
# Fedora Family
if command -v dnf &> /dev/null; then
PKG_MANAGER="dnf"
else
PKG_MANAGER="yum"
fi
# Fedora and family update cache on every PKG_INSTALL call, no need for a separate update.
UPDATE_PKG_CACHE=":"
PKG_INSTALL="${PKG_MANAGER} install -y"
PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l"
INSTALLER_DEPS=(git iproute net-tools newt procps-ng)
PIHOLE_DEPS=(bc bind-utils cronie curl dnsmasq findutils lighttpd lighttpd-fastcgi nmap-ncat php php-common php-cli sudo unzip wget)
if ! grep -q 'Fedora' /etc/redhat-release; then
INSTALLER_DEPS=("${INSTALLER_DEPS[@]}" "epel-release");
fi
LIGHTTPD_USER="lighttpd"
LIGHTTPD_GROUP="lighttpd"
LIGHTTPD_CFG="lighttpd.conf.fedora"
DNSMASQ_USER="nobody"
else
echo "OS distribution not supported"
exit
fi
####### FUNCTIONS ##########
is_repo() {
# Use git to check if directory is currently under VCS, return the value 128
# if directory is not a repo. Return 1 if directory does not exist.
local directory="${1}"
local curdir
local rc
curdir="${PWD}"
if [[ -d "${directory}" ]]; then
# git -C is not used here to support git versions older than 1.8.4
cd "${directory}"
git status --short &> /dev/null || rc=$?
else
# non-zero return code if directory does not exist
rc=1
fi
cd "${curdir}"
return "${rc:-0}"
}
make_repo() {
local directory="${1}"
local remoteRepo="${2}"
echo -n "::: Cloning ${remoteRepo} into ${directory}..."
# Clean out the directory if it exists for git to clone into
if [[ -d "${directory}" ]]; then
rm -rf "${directory}"
fi
git clone -q --depth 1 "${remoteRepo}" "${directory}" &> /dev/null || return $?
echo " done!"
return 0
}
update_repo() {
local directory="${1}"
# Pull the latest commits
echo -n "::: Updating repo in ${1}..."
if [[ -d "${directory}" ]]; then
cd "${directory}"
git stash -q &> /dev/null || true # Okay for stash failure
git pull -q &> /dev/null || return $?
echo " done!"
fi
return 0
}
getGitFiles() {
# Setup git repos for directory and repository passed
# as arguments 1 and 2
local directory="${1}"
local remoteRepo="${2}"
echo ":::"
echo "::: Checking for existing repository..."
if is_repo "${directory}"; then
update_repo "${directory}" || return 1
else
make_repo "${directory}" "${remoteRepo}" || return 1
fi
return 0
}
find_IPv4_information() {
# Find IP used to route to outside world
IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
IPV4_ADDRESS=$(ip route get 8.8.8.8| awk '{print $7}')
IPv4gw=$(ip route get 8.8.8.8 | awk '{print $3}')
}
get_available_interfaces() {
# Get available UP interfaces.
availableInterfaces=$(ip -o link | grep "state UP" | awk '{print $2}' | cut -d':' -f1 | cut -d'@' -f1)
}
welcomeDialogs() {
# Display the welcome dialog
whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "\n\nThis installer will transform your device into a network-wide ad blocker!" ${r} ${c}
# Support for a part-time dev
whiptail --msgbox --backtitle "Plea" --title "Free and open source" "\n\nThe 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 "Initiating network interface" --title "Static IP Needed" "\n\nThe 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} ${c}
}
verifyFreeDiskSpace() {
# 50MB is the minimum space needed (45MB install (includes web admin bootstrap/jquery libraries etc) + 5MB one day of logs.)
# - Fourdee: Local ensures the variable is only created, and accessible within this function/void. Generally considered a "good" coding practice for non-global variables.
echo "::: Verifying free disk space..."
local required_free_kilobytes=51200
local existing_free_kilobytes=$(df -Pk | grep -m1 '\/$' | awk '{print $4}')
# - Unknown free disk space , not a integer
if ! [[ "${existing_free_kilobytes}" =~ ^([0-9])+$ ]]; then
echo "::: Unknown free disk space!"
echo "::: We were unable to determine available free disk space on this system."
echo "::: You may override this check and force the installation, however, it is not recommended"
echo "::: To do so, pass the argument '--i_do_not_follow_recommendations' to the install script"
echo "::: eg. curl -L https://install.pi-hole.net | bash /dev/stdin --i_do_not_follow_recommendations"
exit 1
# - Insufficient free disk space
elif [[ ${existing_free_kilobytes} -lt ${required_free_kilobytes} ]]; then
echo "::: Insufficient Disk Space!"
echo "::: Your system appears to be low on disk space. pi-hole recommends a minimum of $required_free_kilobytes KiloBytes."
echo "::: You only have ${existing_free_kilobytes} KiloBytes free."
echo "::: If this is a new install you may need to expand your disk."
echo "::: Try running 'sudo raspi-config', and choose the 'expand file system option'"
echo "::: After rebooting, run this installation again. (curl -L https://install.pi-hole.net | bash)"
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
local interfacesArray=()
# Number of available interfaces
local interfaceCount
# Whiptail variable storage
local chooseInterfaceCmd
# Temporary Whiptail options storage
local chooseInterfaceOptions
# Loop sentinel variable
local firstLoop=1
if [[ $(echo "${availableInterfaces}" | wc -l) -eq 1 ]]; then
PIHOLE_INTERFACE="${availableInterfaces}"
return
fi
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 (press space to select)" ${r} ${c} ${interfaceCount})
chooseInterfaceOptions=$("${chooseInterfaceCmd[@]}" "${interfacesArray[@]}" 2>&1 >/dev/tty)
if [[ $? = 0 ]]; then
for desiredInterface in ${chooseInterfaceOptions}; do
PIHOLE_INTERFACE=${desiredInterface}
echo "::: Using interface: $PIHOLE_INTERFACE"
done
else
echo "::: Cancel selected, exiting...."
exit 1
fi
}
useIPv6dialog() {
# Show the IPv6 address used for blocking
IPV6_ADDRESS=$(ip -6 route get 2001:4860:4860::8888 | grep -v "unreachable" | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
if [[ ! -z "${IPV6_ADDRESS}" ]]; then
whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$IPV6_ADDRESS will be used to block ads." ${r} ${c}
fi
}
use4andor6() {
local useIPv4
local useIPv6
# Let use select IPv4 and/or IPv6
cmd=(whiptail --separate-output --checklist "Select Protocols (press space to select)" ${r} ${c} 2)
options=(IPv4 "Block ads over IPv4" on
IPv6 "Block ads over IPv6" on)
choices=$("${cmd[@]}" "${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} ]]; then
find_IPv4_information
getStaticIPv4Settings
setStaticIPv4
fi
if [[ ${useIPv6} ]]; then
useIPv6dialog
fi
echo "::: IPv4 address: ${IPV4_ADDRESS}"
echo "::: IPv6 address: ${IPV6_ADDRESS}"
if [ ! ${useIPv4} ] && [ ! ${useIPv6} ]; then
echo "::: Cannot continue, neither IPv4 or IPv6 selected"
echo "::: Exiting"
exit 1
fi
else
echo "::: Cancel selected. Exiting..."
exit 1
fi
}
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: ${IPV4_ADDRESS}
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 [[ ${ipSettingsCorrect} = True ]]; do
# Ask for the IPv4 address
IPV4_ADDRESS=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" ${r} ${c} "${IPV4_ADDRESS}" 3>&1 1>&2 2>&3)
if [[ $? = 0 ]]; then
echo "::: Your static IPv4 address: ${IPV4_ADDRESS}"
# Ask for the gateway
IPv4gw=$(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: ${IPV4_ADDRESS}
Gateway: ${IPv4gw}" ${r} ${c}); then
# 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 ${PIHOLE_INTERFACE}
static ip_address=${IPV4_ADDRESS}
static routers=${IPv4gw}
static domain_name_servers=${IPv4gw}" | tee -a /etc/dhcpcd.conf >/dev/null
}
setStaticIPv4() {
local IFCFG_FILE
local IPADDR
local CIDR
if [[ -f /etc/dhcpcd.conf ]]; then
# Debian Family
if grep -q "${IPV4_ADDRESS}" /etc/dhcpcd.conf; then
echo "::: Static IP already configured"
else
setDHCPCD
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
echo ":::"
echo "::: Setting IP to ${IPV4_ADDRESS}. You may need to restart after the install is complete."
echo ":::"
fi
elif [[ -f /etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE} ]];then
# Fedora Family
IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}
if grep -q "${IPV4_ADDRESS}" "${IFCFG_FILE}"; then
echo "::: Static IP already configured"
else
IPADDR=$(echo "${IPV4_ADDRESS}" | cut -f1 -d/)
CIDR=$(echo "${IPV4_ADDRESS}" | cut -f2 -d/)
# Backup existing interface configuration:
cp "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
# Build Interface configuration file:
{
echo "# Configured via Pi-Hole installer"
echo "DEVICE=$PIHOLE_INTERFACE"
echo "BOOTPROTO=none"
echo "ONBOOT=yes"
echo "IPADDR=$IPADDR"
echo "PREFIX=$CIDR"
echo "GATEWAY=$IPv4gw"
echo "DNS1=$PIHOLE_DNS_1"
echo "DNS2=$PIHOLE_DNS_2"
echo "USERCTL=no"
}> "${IFCFG_FILE}"
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
if command -v nmcli &> /dev/null;then
# Tell NetworkManager to read our new sysconfig file
nmcli con load "${IFCFG_FILE}" > /dev/null
fi
echo ":::"
echo "::: Setting IP to ${IPV4_ADDRESS}. You may need to restart after the install is complete."
echo ":::"
fi
else
echo "::: Warning: Unable to locate configuration file to set static IPv4 address!"
exit 1
fi
}
valid_ip() {
local ip=${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}
}
setDNS() {
DNSChooseCmd=(whiptail --separate-output --radiolist "Select Upstream DNS Provider. To use your own, select Custom." ${r} ${c} 6)
DNSChooseOptions=(Google "" on
OpenDNS "" off
Level3 "" off
Norton "" off
Comodo "" off
Custom "" off)
DNSchoices=$("${DNSChooseCmd[@]}" "${DNSChooseOptions[@]}" 2>&1 >/dev/tty)
if [[ $? = 0 ]];then
case ${DNSchoices} in
Google)
echo "::: Using Google DNS servers."
PIHOLE_DNS_1="8.8.8.8"
PIHOLE_DNS_2="8.8.4.4"
;;
OpenDNS)
echo "::: Using OpenDNS servers."
PIHOLE_DNS_1="208.67.222.222"
PIHOLE_DNS_2="208.67.220.220"
;;
Level3)
echo "::: Using Level3 servers."
PIHOLE_DNS_1="4.2.2.1"
PIHOLE_DNS_2="4.2.2.2"
;;
Norton)
echo "::: Using Norton ConnectSafe servers."
PIHOLE_DNS_1="199.85.126.10"
PIHOLE_DNS_2="199.85.127.10"
;;
Comodo)
echo "::: Using Comodo Secure servers."
PIHOLE_DNS_1="8.26.56.26"
PIHOLE_DNS_2="8.20.247.20"
;;
Custom)
until [[ ${DNSSettingsCorrect} = True ]]; do
strInvalid="Invalid"
if [ ! ${PIHOLE_DNS_1} ]; then
if [ ! ${PIHOLE_DNS_2} ]; then
prePopulate=""
else
prePopulate=", ${PIHOLE_DNS_2}"
fi
elif [ ${PIHOLE_DNS_1} ] && [ ! ${PIHOLE_DNS_2} ]; then
prePopulate="${PIHOLE_DNS_1}"
elif [ ${PIHOLE_DNS_1} ] && [ ${PIHOLE_DNS_2} ]; then
prePopulate="${PIHOLE_DNS_1}, ${PIHOLE_DNS_2}"
fi
piholeDNS=$(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} ${c} "${prePopulate}" 3>&1 1>&2 2>&3)
if [[ $? = 0 ]]; then
PIHOLE_DNS_1=$(echo "${piholeDNS}" | sed 's/[, \t]\+/,/g' | awk -F, '{print$1}')
PIHOLE_DNS_2=$(echo "${piholeDNS}" | sed 's/[, \t]\+/,/g' | awk -F, '{print$2}')
if ! valid_ip "${PIHOLE_DNS_1}" || [ ! "${PIHOLE_DNS_1}" ]; then
PIHOLE_DNS_1=${strInvalid}
fi
if ! valid_ip "${PIHOLE_DNS_2}" && [ "${PIHOLE_DNS_2}" ]; then
PIHOLE_DNS_2=${strInvalid}
fi
else
echo "::: Cancel selected, exiting...."
exit 1
fi
if [[ ${PIHOLE_DNS_1} == "${strInvalid}" ]] || [[ ${PIHOLE_DNS_2} == "${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: $PIHOLE_DNS_1\n DNS Server 2: ${PIHOLE_DNS_2}" ${r} ${c}
if [[ ${PIHOLE_DNS_1} == "${strInvalid}" ]]; then
PIHOLE_DNS_1=""
fi
if [[ ${PIHOLE_DNS_2} == "${strInvalid}" ]]; then
PIHOLE_DNS_2=""
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: $PIHOLE_DNS_1\n DNS Server 2: ${PIHOLE_DNS_2}" ${r} ${c}); then
DNSSettingsCorrect=True
else
# If the settings are wrong, the loop continues
DNSSettingsCorrect=False
fi
fi
done
;;
esac
else
echo "::: Cancel selected. Exiting..."
exit 1
fi
}
setLogging() {
local LogToggleCommand
local LogChooseOptions
local LogChoices
LogToggleCommand=(whiptail --separate-output --radiolist "Do you want to log queries?\n (Disabling will render graphs on the Admin page useless):" ${r} ${c} 6)
LogChooseOptions=("On (Recommended)" "" on
Off "" off)
LogChoices=$("${LogToggleCommand[@]}" "${LogChooseOptions[@]}" 2>&1 >/dev/tty) || (echo "::: Cancel selected. Exiting..." && exit 1)
case ${LogChoices} in
"On (Recommended)")
echo "::: Logging On."
QUERY_LOGGING=true
;;
Off)
echo "::: Logging Off."
QUERY_LOGGING=false
;;
esac
}
version_check_dnsmasq() {
# Check if /etc/dnsmasq.conf is from pihole. If so replace with an original and install new in .d directory
local dnsmasq_conf="/etc/dnsmasq.conf"
local dnsmasq_conf_orig="/etc/dnsmasq.conf.orig"
local dnsmasq_pihole_id_string="addn-hosts=/etc/pihole/gravity.list"
local dnsmasq_original_config="/etc/.pihole/advanced/dnsmasq.conf.original"
local dnsmasq_pihole_01_snippet="/etc/.pihole/advanced/01-pihole.conf"
local dnsmasq_pihole_01_location="/etc/dnsmasq.d/01-pihole.conf"
if [ -f ${dnsmasq_conf} ]; then
echo -n "::: Existing dnsmasq.conf found..."
if grep -q ${dnsmasq_pihole_id_string} ${dnsmasq_conf}; then
echo " it is from a previous pi-hole install."
echo -n "::: Backing up dnsmasq.conf to dnsmasq.conf.orig..."
mv -f ${dnsmasq_conf} ${dnsmasq_conf_orig}
echo " done."
echo -n "::: Restoring default dnsmasq.conf..."
cp ${dnsmasq_original_config} ${dnsmasq_conf}
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..."
cp ${dnsmasq_original_config} ${dnsmasq_conf}
echo " done."
fi
echo -n "::: Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf..."
cp ${dnsmasq_pihole_01_snippet} ${dnsmasq_pihole_01_location}
echo " done."
sed -i "s/@INT@/$PIHOLE_INTERFACE/" ${dnsmasq_pihole_01_location}
if [[ "${PIHOLE_DNS_1}" != "" ]]; then
sed -i "s/@DNS1@/$PIHOLE_DNS_1/" ${dnsmasq_pihole_01_location}
else
sed -i '/^server=@DNS1@/d' ${dnsmasq_pihole_01_location}
fi
if [[ "${PIHOLE_DNS_2}" != "" ]]; then
sed -i "s/@DNS2@/$PIHOLE_DNS_2/" ${dnsmasq_pihole_01_location}
else
sed -i '/^server=@DNS2@/d' ${dnsmasq_pihole_01_location}
fi
sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' ${dnsmasq_conf}
if [[ "${QUERY_LOGGING}" == false ]] ; then
#Disable Logging
sed -i 's/^log-queries/#log-queries/' ${dnsmasq_pihole_01_location}
else
#Enable Logging
sed -i 's/^#log-queries/log-queries/' ${dnsmasq_pihole_01_location}
fi
}
clean_existing() {
# Clean an exiting installation to prepare for upgrade/reinstall
# ${1} Directory to clean; ${2} Array of files to remove
local clean_directory="${1}"
local old_files=${2}
for script in "${old_files[@]}"; do
rm -f "${clean_directory}${script}.sh"
done
}
installScripts() {
# Install the scripts from repository to their various locations
readonly install_dir="/opt/pihole/"
echo ":::"
echo -n "::: Installing scripts from ${PI_HOLE_LOCAL_REPO}..."
# Clear out script files from Pi-hole scripts directory.
clean_existing "${install_dir}" "${PI_HOLE_FILES}"
# Install files from local core repository
if is_repo "${PI_HOLE_LOCAL_REPO}"; then
cd "${PI_HOLE_LOCAL_REPO}"
install -o "${USER}" -Dm755 -d /opt/pihole
install -o "${USER}" -Dm755 -t /opt/pihole/ gravity.sh
install -o "${USER}" -Dm755 -t /opt/pihole/ ./advanced/Scripts/*.sh
install -o "${USER}" -Dm755 -t /opt/pihole/ ./automated\ install/uninstall.sh
install -o "${USER}" -Dm755 -t /usr/local/bin/ pihole
install -Dm644 ./advanced/bash-completion/pihole /etc/bash_completion.d/pihole
echo " done."
else
echo " *** ERROR: Local repo ${core_repo} not found, exiting."
exit 1
fi
}
installConfigs() {
# Install the configs from /etc/.pihole to their various locations
echo ":::"
echo "::: Installing configs..."
version_check_dnsmasq
if [ ! -d "/etc/lighttpd" ]; then
mkdir /etc/lighttpd
chown "${USER}":root /etc/lighttpd
elif [ -f "/etc/lighttpd/lighttpd.conf" ]; then
mv /etc/lighttpd/lighttpd.conf /etc/lighttpd/lighttpd.conf.orig
fi
cp /etc/.pihole/advanced/${LIGHTTPD_CFG} /etc/lighttpd/lighttpd.conf
mkdir -p /var/run/lighttpd
chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/run/lighttpd
mkdir -p /var/cache/lighttpd/compress
chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/compress
mkdir -p /var/cache/lighttpd/uploads
chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/uploads
}
stop_service() {
# Stop service passed in as argument.
# Can softfail, as process may not be installed when this is called
echo ":::"
echo -n "::: Stopping ${1} service..."
if command -v systemctl &> /dev/null; then
systemctl stop "${1}" &> /dev/null || true
else
service "${1}" stop &> /dev/null || true
fi
echo " done."
}
start_service() {
# Start/Restart service passed in as argument
# This should not fail, it's an error if it does
echo ":::"
echo -n "::: Starting ${1} service..."
if command -v systemctl &> /dev/null; then
systemctl restart "${1}" &> /dev/null
else
service "${1}" restart &> /dev/null
fi
echo " done."
}
enable_service() {
# Enable service so that it will start with next reboot
echo ":::"
echo -n "::: Enabling ${1} service to start on reboot..."
if command -v systemctl &> /dev/null; then
systemctl enable "${1}" &> /dev/null
else
update-rc.d "${1}" defaults &> /dev/null
fi
echo " done."
}
update_pacakge_cache() {
#Running apt-get update/upgrade with minimal output can cause some issues with
#requiring user input (e.g password for phpmyadmin see #218)
#Update package cache on apt based OSes. Do this every time since
#it's quick and packages can be updated at any time.
echo ":::"
echo -n "::: Updating local cache of available packages..."
${UPDATE_PKG_CACHE} &> /dev/null
echo " done!"
}
notify_package_updates_available() {
# Let user know if they have outdated packages on their system and
# advise them to run a package update at soonest possible.
echo ":::"
echo -n "::: Checking ${PKG_MANAGER} for upgraded packages...."
updatesToInstall=$(eval "${PKG_COUNT}")
echo " done!"
echo ":::"
if [[ -d "/lib/modules/$(uname -r)" ]]; then
if [[ ${updatesToInstall} -eq "0" ]]; then
echo "::: Your system is up to date! Continuing with Pi-hole installation..."
else
echo "::: There are ${updatesToInstall} updates available for your system!"
echo "::: We recommend you update your OS after installing Pi-Hole! "
echo ":::"
fi
else
echo "::: Kernel update detected, please reboot your system and try again if your installation fails."
fi
}
install_dependent_packages() {
# Install packages passed in via argument array
# No spinner - conflicts with set -e
declare -a argArray1=("${!1}")
declare -a installArray
# Debian based package install - debconf will download the entire package list
# so we just create an array of packages not currently installed to cut down on the
# amount of download traffic.
# NOTE: We may be able to use this installArray in the future to create a list of package that were
# installed by us, and remove only the installed packages, and not the entire list.
if command -v debconf-apt-progress &> /dev/null; then
for i in "${argArray1[@]}"; do
echo -n "::: Checking for $i..."
if dpkg-query -W -f='${Status}' "${i}" 2>/dev/null | grep "ok installed" &> /dev/null; then
echo " installed!"
else
echo " added to install list!"
installArray+=("${i}")
fi
done
if [[ ${#installArray[@]} -gt 0 ]]; then
debconf-apt-progress -- ${PKG_INSTALL} "${installArray[@]}"
return
fi
return 0
fi
#Fedora/CentOS
for i in "${argArray1[@]}"; do
echo -n "::: Checking for $i..."
if ${PKG_MANAGER} -q list installed "${i}" &> /dev/null; then
echo " installed!"
else
echo " added to install list!"
installArray+=("${i}")
fi
done
if [[ ${#installArray[@]} -gt 0 ]]; then
${PKG_INSTALL} "${installArray[@]}" &> /dev/null
return
fi
return 0
}
CreateLogFile() {
# Create logfiles if necessary
echo ":::"
echo -n "::: Creating log file and changing owner to dnsmasq..."
if [ ! -f /var/log/pihole.log ]; then
touch /var/log/pihole.log
chmod 644 /var/log/pihole.log
chown "${DNSMASQ_USER}":root /var/log/pihole.log
echo " done!"
else
echo " already exists!"
fi
}
installPiholeWeb() {
# Install the web interface
echo ":::"
echo "::: Installing pihole custom index page..."
if [ -d "/var/www/html/pihole" ]; then
if [ -f "/var/www/html/pihole/index.php" ]; then
echo "::: Existing index.php detected, not overwriting"
else
echo -n "::: index.php missing, replacing... "
cp /etc/.pihole/advanced/index.php /var/www/html/pihole/
echo " done!"
fi
if [ -f "/var/www/html/pihole/index.js" ]; then
echo "::: Existing index.js detected, not overwriting"
else
echo -n "::: index.js missing, replacing... "
cp /etc/.pihole/advanced/index.js /var/www/html/pihole/
echo " done!"
fi
if [ -f "/var/www/html/pihole/blockingpage.css" ]; then
echo "::: Existing blockingpage.css detected, not overwriting"
else
echo -n "::: index.css missing, replacing... "
cp /etc/.pihole/advanced/blockingpage.css /var/www/html/pihole
echo " done!"
fi
else
mkdir /var/www/html/pihole
if [ -f /var/www/html/index.lighttpd.html ]; then
mv /var/www/html/index.lighttpd.html /var/www/html/index.lighttpd.orig
else
printf "\n:::\tNo default index.lighttpd.html file found... not backing up"
fi
cp /etc/.pihole/advanced/index.* /var/www/html/pihole/.
echo " done!"
fi
# Install Sudoer file
echo ":::"
echo -n "::: Installing sudoer file..."
mkdir -p /etc/sudoers.d/
cp /etc/.pihole/advanced/pihole.sudo /etc/sudoers.d/pihole
# Add lighttpd user (OS dependent) to sudoers file
echo "${LIGHTTPD_USER} ALL=NOPASSWD: /usr/local/bin/pihole" >> /etc/sudoers.d/pihole
if [[ "$LIGHTTPD_USER" == "lighttpd" ]]; then
# Allow executing pihole via sudo with Fedora
# Usually /usr/local/bin is not permitted as directory for sudoable programms
echo "Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin" >> /etc/sudoers.d/pihole
fi
chmod 0440 /etc/sudoers.d/pihole
echo " done!"
}
installCron() {
# Install the cron job
echo ":::"
echo -n "::: Installing latest Cron script..."
cp /etc/.pihole/advanced/pihole.cron /etc/cron.d/pihole
echo " done!"
}
runGravity() {
# Run gravity.sh to build blacklists
echo ":::"
echo "::: Preparing to run gravity.sh to refresh hosts..."
if ls /etc/pihole/list* 1> /dev/null 2>&1; then
echo "::: Cleaning up previous install (preserving whitelist/blacklist)"
rm /etc/pihole/list.*
fi
# Test if /etc/pihole/adlists.default exists
if [[ ! -e /etc/pihole/adlists.default ]]; then
cp /etc/.pihole/adlists.default /etc/pihole/adlists.default
fi
echo "::: Running gravity.sh"
{ /opt/pihole/gravity.sh; }
}
create_pihole_user() {
# Check if user pihole exists and create if not
echo "::: Checking if user 'pihole' exists..."
id -u pihole &> /dev/null && echo "::: User 'pihole' already exists" || (echo "::: User 'pihole' doesn't exist. Creating..." && useradd -r -s /usr/sbin/nologin pihole)
}
configureFirewall() {
# Allow HTTP and DNS traffic
if firewall-cmd --state &> /dev/null; then
echo "::: Configuring FirewallD for httpd and dnsmasq.."
firewall-cmd --permanent --add-port=80/tcp --add-port=53/tcp --add-port=53/udp
firewall-cmd --reload
# Check for proper kernel modules to prevent failure
elif modinfo ip_tables &> /dev/null; then
# If chain Policy is not ACCEPT or last Rule is not ACCEPT
# then check and insert our Rules above the DROP/REJECT Rule.
if iptables -S INPUT | head -n1 | grep -qv '^-P.*ACCEPT$' || iptables -S INPUT | tail -n1 | grep -qv '^-\(A\|P\).*ACCEPT$'; then
# Check chain first, otherwise a new rule will duplicate old ones
echo "::: Configuring iptables for httpd and dnsmasq.."
iptables -C INPUT -p tcp -m tcp --dport 80 -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p tcp -m tcp --dport 80 -j ACCEPT
iptables -C INPUT -p tcp -m tcp --dport 53 -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p tcp -m tcp --dport 53 -j ACCEPT
iptables -C INPUT -p udp -m udp --dport 53 -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p udp -m udp --dport 53 -j ACCEPT
fi
else
echo "::: No active firewall detected.. skipping firewall configuration."
fi
}
finalExports() {
# Update variables in setupVars.conf file
if [ -e "${setupVars}" ]; then
sed -i.update.bak '/PIHOLE_INTERFACE/d;/IPV4_ADDRESS/d;/IPV6_ADDRESS/d;/PIHOLE_DNS_1/d;/PIHOLE_DNS_2/d;/QUERY_LOGGING/d;' "${setupVars}"
fi
{
echo "PIHOLE_INTERFACE=${PIHOLE_INTERFACE}"
echo "IPV4_ADDRESS=${IPV4_ADDRESS}"
echo "IPV6_ADDRESS=${IPV6_ADDRESS}"
echo "PIHOLE_DNS_1=${PIHOLE_DNS_1}"
echo "PIHOLE_DNS_2=${PIHOLE_DNS_2}"
echo "QUERY_LOGGING=${QUERY_LOGGING}"
}>> "${setupVars}"
# Look for DNS server settings which would have to be reapplied
source "${setupVars}"
source "/etc/.pihole/advanced/Scripts/webpage.sh"
if [[ "${DNS_FQDN_REQUIRED}" != "" ]] ; then
ProcessDNSSettings
fi
if [[ "${DHCP_ACTIVE}" != "" ]] ; then
ProcessDHCPSettings
fi
}
installPihole() {
# Install base files and web interface
create_pihole_user
if [ ! -d "/var/www/html" ]; then
mkdir -p /var/www/html
fi
chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/www/html
chmod 775 /var/www/html
usermod -a -G ${LIGHTTPD_GROUP} pihole
if [ -x "$(command -v lighty-enable-mod)" ]; then
lighty-enable-mod fastcgi fastcgi-php > /dev/null || true
else
printf "\n:::\tWarning: 'lighty-enable-mod' utility not found. Please ensure fastcgi is enabled if you experience issues.\n"
fi
installScripts
installConfigs
CreateLogFile
installPiholeWeb
installCron
configureFirewall
finalExports
runGravity
}
accountForRefactor() {
# At some point in the future this list can be pruned, for now we'll need it to ensure updates don't break.
# Refactoring of install script has changed the name of a couple of variables. Sort them out here.
sed -i 's/piholeInterface/PIHOLE_INTERFACE/g' ${setupVars}
sed -i 's/IPv4_address/IPV4_ADDRESS/g' ${setupVars}
sed -i 's/IPv4addr/IPV4_ADDRESS/g' ${setupVars}
sed -i 's/IPv6_address/IPV6_ADDRESS/g' ${setupVars}
sed -i 's/piholeIPv6/IPV6_ADDRESS/g' ${setupVars}
sed -i 's/piholeDNS1/PIHOLE_DNS_1/g' ${setupVars}
sed -i 's/piholeDNS2/PIHOLE_DNS_2/g' ${setupVars}
}
updatePihole() {
accountForRefactor
# Source ${setupVars} for use in the rest of the functions.
. ${setupVars}
# Install base files and web interface
installScripts
installConfigs
CreateLogFile
installPiholeWeb
installCron
configureFirewall
finalExports #re-export setupVars.conf to account for any new vars added in new versions
runGravity
}
checkSelinux() {
if command -v getenforce &> /dev/null; then
echo ":::"
echo -n "::: SELinux Support Detected... Mode: "
enforceMode=$(getenforce)
echo "${enforceMode}"
if [[ "${enforceMode}" == "Enforcing" ]]; then
if (whiptail --title "SELinux Enforcing Detected" --yesno "SELinux is being Enforced on your system!\n\nPi-hole currently does not support SELinux, but you may still continue with the installation.\n\nNote: Admin UI Will not function fully without setting your policies correctly\n\nContinue installing Pi-hole?" ${r} ${c}); then
echo ":::"
echo "::: Continuing installation with SELinux Enforcing."
echo "::: Please refer to official SELinux documentation to create a custom policy."
else
echo ":::"
echo "::: Not continuing install after SELinux Enforcing detected."
exit 1
fi
fi
fi
}
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:
IPv4: ${IPV4_ADDRESS%/*}
IPv6: ${IPV6_ADDRESS:-"Not Configured"}
If you set a new IP address, you should restart the Pi.
The install log is in /etc/pihole.
View the web interface at http://pi.hole/admin or http://${IPV4_ADDRESS%/*}/admin
Your Admin Webpage login password is ${1:-"NOT SET"}" ${r} ${c}
}
update_dialogs() {
# reconfigure
if [ "${reconfigure}" = true ]; then
opt1a="Repair"
opt1b="This will retain existing settings"
strAdd="You will remain on the same version"
else
opt1a="Update"
opt1b="This will retain existing settings."
strAdd="You will be updated to the latest version."
fi
opt2a="Reconfigure"
opt2b="This will allow you to enter new settings"
UpdateCmd=$(whiptail --title "Existing Install Detected!" --menu "\n\nWe have detected an existing install.\n\nPlease choose from the following options: \n($strAdd)" ${r} ${c} 2 \
"${opt1a}" "${opt1b}" \
"${opt2a}" "${opt2b}" 3>&2 2>&1 1>&3)
if [[ $? = 0 ]];then
case ${UpdateCmd} in
${opt1a})
echo "::: ${opt1a} option selected."
useUpdateVars=true
;;
${opt2a})
echo "::: ${opt2a} option selected"
useUpdateVars=false
;;
esac
else
echo "::: Cancel selected. Exiting..."
exit 1
fi
}
main() {
######## FIRST CHECK ########
# Must be root to install
echo ":::"
if [[ ${EUID} -eq 0 ]]; then
echo "::: You are root."
else
echo "::: Script called with non-root privileges. The Pi-hole installs server packages and configures"
echo "::: system networking, it requires elevated rights. Please check the contents of the script for"
echo "::: any concerns with this requirement. Please be sure to download this script from a trusted source."
echo ":::"
echo "::: Detecting the presence of the sudo utility for continuation of this install..."
if command -v sudo &> /dev/null; then
echo "::: Utility sudo located."
exec curl -sSL https://install.pi-hole.net | sudo bash "$@"
exit $?
else
echo "::: sudo is needed for the Web interface to run pihole commands. Please run this script as root and it will be automatically installed."
exit 1
fi
fi
# Check arguments for the undocumented flags
for var in "$@"; do
case "$var" in
"--reconfigure" ) reconfigure=true;;
"--i_do_not_follow_recommendations" ) skipSpaceCheck=false;;
"--unattended" ) runUnattended=true;;
esac
done
if [[ -f ${setupVars} ]]; then
if [[ "${runUnattended}" == true ]]; then
echo "::: --unattended passed to install script, no whiptail dialogs will be displayed"
useUpdateVars=true
else
update_dialogs
fi
fi
# Start the installer
# Verify there is enough disk space for the install
if [[ "${skipSpaceCheck}" == true ]]; then
echo "::: --i_do_not_follow_recommendations passed to script, skipping free disk space verification!"
else
verifyFreeDiskSpace
fi
# Update package cache
update_pacakge_cache
# Notify user of package availability
notify_package_updates_available
# Install packages used by this installation script
install_dependent_packages INSTALLER_DEPS[@]
# Check if SELinux is Enforcing
checkSelinux
if [[ "${reconfigure}" == true ]]; then
echo "::: --reconfigure passed to install script. Not downloading/updating local repos"
else
# Get Git files for Core and Admin
getGitFiles ${PI_HOLE_LOCAL_REPO} ${piholeGitUrl} || \
{ echo "!!! Unable to clone ${piholeGitUrl} into ${PI_HOLE_LOCAL_REPO}, unable to continue."; \
exit 1; \
}
getGitFiles ${webInterfaceDir} ${webInterfaceGitUrl} || \
{ echo "!!! Unable to clone ${webInterfaceGitUrl} into ${webInterfaceDir}, unable to continue."; \
exit 1; \
}
fi
if [[ ${useUpdateVars} == false ]]; then
# Display welcome dialogs
welcomeDialogs
# Create directory for Pi-hole storage
mkdir -p /etc/pihole/
# Stop resolver and webserver while installing proceses
stop_service dnsmasq
stop_service lighttpd
# Determine available interfaces
get_available_interfaces
# Find interfaces and let the user choose one
chooseInterface
# Decide what upstream DNS Servers to use
setDNS
# Let the user decide if they want to block ads over IPv4 and/or IPv6
use4andor6
# Let the user decide if they want query logging enabled...
setLogging
# Install packages used by the Pi-hole
install_dependent_packages PIHOLE_DEPS[@]
# Install and log everything to a file
installPihole | tee ${tmpLog}
else
# update packages used by the Pi-hole
install_dependent_packages PIHOLE_DEPS[@]
updatePihole | tee ${tmpLog}
fi
# Move the log file into /etc/pihole for storage
mv ${tmpLog} ${instalLogLoc}
# Add password to web UI if there is none
pw=""
if [[ $(grep 'WEBPASSWORD' -c /etc/pihole/setupVars.conf) == 0 ]] ; then
pw=$(tr -dc _A-Z-a-z-0-9 < /dev/urandom | head -c 8)
pihole -a -p ${pw}
fi
if [[ "${useUpdateVars}" == false ]]; then
displayFinalMessage ${pw}
fi
echo "::: Restarting services..."
# Start services
start_service dnsmasq
enable_service dnsmasq
start_service lighttpd
enable_service lighttpd
echo "::: done."
echo ":::"
if [[ "${useUpdateVars}" == false ]]; then
echo "::: Installation Complete! Configure your devices to use the Pi-hole as their DNS server using:"
echo "::: ${IPV4_ADDRESS%/*}"
echo "::: ${IPV6_ADDRESS}"
echo ":::"
echo "::: If you set a new IP address, you should restart the Pi."
echo "::: View the web interface at http://pi.hole/admin or http://${IPV4_ADDRESS%/*}/admin"
else
echo "::: Update complete!"
fi
if (( ${#pw} > 0 )) ; then
echo ":::"
echo "::: Note: As security measure a password has been installed for your web interface"
echo "::: The currently set password is"
echo "::: ${pw}"
echo ":::"
echo "::: You can always change it using"
echo "::: pihole -a -p new_password"
fi
echo ":::"
echo "::: The install log is located at: /etc/pihole/install.log"
}
if [[ "${PH_TEST}" != true ]] ; then
main "$@"
fi