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pi-hole/automated install/basic-install.sh
Christian König 5c564e53ca
Fix indention in install script output 
Signed-off-by: Christian König <ckoenig@posteo.de>
2022-07-06 12:29:03 +02:00

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#!/usr/bin/env bash
# shellcheck disable=SC1090
# Pi-hole: A black hole for Internet advertisements
# (c) Pi-hole (https://pi-hole.net)
# Network-wide ad blocking via your own hardware.
#
# Installs and Updates Pi-hole
#
# This file is copyright under the latest version of the EUPL.
# Please see LICENSE file for your rights under this license.
# pi-hole.net/donate
#
# Install with this command (from your Linux machine):
#
# curl -sSL https://install.pi-hole.net | bash
# -e option instructs bash to immediately exit if any command [1] has a non-zero exit status
# We do not want users to end up with a partially working install, so we exit the script
# instead of continuing the installation with something broken
set -e
# Append common folders to the PATH to ensure that all basic commands are available.
# When using "su" an incomplete PATH could be passed: https://github.com/pi-hole/pi-hole/issues/3209
export PATH+=':/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
######## VARIABLES #########
# For better maintainability, we store as much information that can change in variables
# This allows us to make a change in one place that can propagate to all instances of the variable
# These variables should all be GLOBAL variables, written in CAPS
# Local variables will be in lowercase and will exist only within functions
# It's still a work in progress, so you may see some variance in this guideline until it is complete
# Dialog result codes
# dialog code values can be set by environment variables, we only override if
# the env var is not set or empty.
: "${DIALOG_OK:=0}"
: "${DIALOG_CANCEL:=1}"
: "${DIALOG_ESC:=255}"
# List of supported DNS servers
DNS_SERVERS=$(cat << EOM
Google (ECS, DNSSEC);8.8.8.8;8.8.4.4;2001:4860:4860:0:0:0:0:8888;2001:4860:4860:0:0:0:0:8844
OpenDNS (ECS, DNSSEC);208.67.222.222;208.67.220.220;2620:119:35::35;2620:119:53::53
Level3;4.2.2.1;4.2.2.2;;
Comodo;8.26.56.26;8.20.247.20;;
DNS.WATCH (DNSSEC);84.200.69.80;84.200.70.40;2001:1608:10:25:0:0:1c04:b12f;2001:1608:10:25:0:0:9249:d69b
Quad9 (filtered, DNSSEC);9.9.9.9;149.112.112.112;2620:fe::fe;2620:fe::9
Quad9 (unfiltered, no DNSSEC);9.9.9.10;149.112.112.10;2620:fe::10;2620:fe::fe:10
Quad9 (filtered, ECS, DNSSEC);9.9.9.11;149.112.112.11;2620:fe::11;2620:fe::fe:11
Cloudflare (DNSSEC);1.1.1.1;1.0.0.1;2606:4700:4700::1111;2606:4700:4700::1001
EOM
)
# Location for final installation log storage
installLogLoc="/etc/pihole/install.log"
# This is an important file as it contains information specific to the machine it's being installed on
setupVars="/etc/pihole/setupVars.conf"
# Pi-hole uses lighttpd as a Web server, and this is the config file for it
lighttpdConfig="/etc/lighttpd/lighttpd.conf"
# This is a file used for the colorized output
coltable="/opt/pihole/COL_TABLE"
# Root of the web server
webroot="/var/www/html"
# We clone (or update) two git repositories during the install. This helps to make sure that we always have the latest versions of the relevant files.
# AdminLTE is used to set up the Web admin interface.
# Pi-hole contains various setup scripts and files which are critical to the installation.
# Search for "PI_HOLE_LOCAL_REPO" in this file to see all such scripts.
# Two notable scripts are gravity.sh (used to generate the HOSTS file) and advanced/Scripts/webpage.sh (used to install the Web admin interface)
webInterfaceGitUrl="https://github.com/pi-hole/AdminLTE.git"
webInterfaceDir="${webroot}/admin"
piholeGitUrl="https://github.com/pi-hole/pi-hole.git"
PI_HOLE_LOCAL_REPO="/etc/.pihole"
# List of pihole scripts, stored in an array
PI_HOLE_FILES=(chronometer list piholeDebug piholeLogFlush setupLCD update version gravity uninstall webpage)
# This directory is where the Pi-hole scripts will be installed
PI_HOLE_INSTALL_DIR="/opt/pihole"
PI_HOLE_CONFIG_DIR="/etc/pihole"
PI_HOLE_BIN_DIR="/usr/local/bin"
PI_HOLE_BLOCKPAGE_DIR="${webroot}/pihole"
if [ -z "$useUpdateVars" ]; then
useUpdateVars=false
fi
adlistFile="/etc/pihole/adlists.list"
# Pi-hole needs an IP address; to begin, these variables are empty since we don't know what the IP is until this script can run
IPV4_ADDRESS=${IPV4_ADDRESS}
IPV6_ADDRESS=${IPV6_ADDRESS}
# Give settings their default values. These may be changed by prompts later in the script.
QUERY_LOGGING=true
INSTALL_WEB_INTERFACE=true
PRIVACY_LEVEL=0
CACHE_SIZE=10000
if [ -z "${USER}" ]; then
USER="$(id -un)"
fi
# dialog dimensions: Let dialog handle appropriate sizing.
r=20
c=70
######## Undocumented Flags. Shhh ########
# These are undocumented flags; some of which we can use when repairing an installation
# The runUnattended flag is one example of this
reconfigure=false
runUnattended=false
INSTALL_WEB_SERVER=true
# Check arguments for the undocumented flags
for var in "$@"; do
case "$var" in
"--reconfigure" ) reconfigure=true;;
"--unattended" ) runUnattended=true;;
"--disable-install-webserver" ) INSTALL_WEB_SERVER=false;;
esac
done
# If the color table file exists,
if [[ -f "${coltable}" ]]; then
# source it
source "${coltable}"
# Otherwise,
else
# Set these values so the installer can still run in color
COL_NC='\e[0m' # No Color
COL_LIGHT_GREEN='\e[1;32m'
COL_LIGHT_RED='\e[1;31m'
TICK="[${COL_LIGHT_GREEN}✓${COL_NC}]"
CROSS="[${COL_LIGHT_RED}✗${COL_NC}]"
INFO="[i]"
# shellcheck disable=SC2034
DONE="${COL_LIGHT_GREEN} done!${COL_NC}"
OVER="\\r\\033[K"
fi
# A simple function that just echoes out our logo in ASCII format
# This lets users know that it is a Pi-hole, LLC product
show_ascii_berry() {
echo -e "
${COL_LIGHT_GREEN}.;;,.
.ccccc:,.
:cccclll:. ..,,
:ccccclll. ;ooodc
'ccll:;ll .oooodc
.;cll.;;looo:.
${COL_LIGHT_RED}.. ','.
.',,,,,,'.
.',,,,,,,,,,.
.',,,,,,,,,,,,....
....''',,,,,,,'.......
......... .... .........
.......... ..........
.......... ..........
......... .... .........
........,,,,,,,'......
....',,,,,,,,,,,,.
.',,,,,,,,,'.
.',,,,,,'.
..'''.${COL_NC}
"
}
is_command() {
# Checks to see if the given command (passed as a string argument) exists on the system.
# The function returns 0 (success) if the command exists, and 1 if it doesn't.
local check_command="$1"
command -v "${check_command}" >/dev/null 2>&1
}
os_check() {
if [ "$PIHOLE_SKIP_OS_CHECK" != true ]; then
# This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net
# and determines whether or not the script is running on one of those systems
local remote_os_domain valid_os valid_version valid_response detected_os detected_version display_warning cmdResult digReturnCode response
remote_os_domain=${OS_CHECK_DOMAIN_NAME:-"versions.pi-hole.net"}
detected_os=$(grep '^ID=' /etc/os-release | cut -d '=' -f2 | tr -d '"')
detected_version=$(grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"')
cmdResult="$(dig +short -t txt "${remote_os_domain}" @ns1.pi-hole.net 2>&1; echo $?)"
# Gets the return code of the previous command (last line)
digReturnCode="${cmdResult##*$'\n'}"
if [ ! "${digReturnCode}" == "0" ]; then
valid_response=false
else
# Dig returned 0 (success), so get the actual response, and loop through it to determine if the detected variables above are valid
response="${cmdResult%%$'\n'*}"
# If the value of ${response} is a single 0, then this is the return code, not an actual response.
if [ "${response}" == 0 ]; then
valid_response=false
fi
IFS=" " read -r -a supportedOS < <(echo "${response}" | tr -d '"')
for distro_and_versions in "${supportedOS[@]}"
do
distro_part="${distro_and_versions%%=*}"
versions_part="${distro_and_versions##*=}"
# If the distro part is a (case-insensitive) substring of the computer OS
if [[ "${detected_os^^}" =~ ${distro_part^^} ]]; then
valid_os=true
IFS="," read -r -a supportedVer <<<"${versions_part}"
for version in "${supportedVer[@]}"
do
if [[ "${detected_version}" =~ $version ]]; then
valid_version=true
break
fi
done
break
fi
done
fi
if [ "$valid_os" = true ] && [ "$valid_version" = true ] && [ ! "$valid_response" = false ]; then
display_warning=false
fi
if [ "$display_warning" != false ]; then
if [ "$valid_response" = false ]; then
if [ "${digReturnCode}" -eq 0 ]; then
errStr="dig succeeded, but response was blank. Please contact support"
else
errStr="dig failed with return code ${digReturnCode}"
fi
printf " %b %bRetrieval of supported OS list failed. %s. %b\\n" "${CROSS}" "${COL_LIGHT_RED}" "${errStr}" "${COL_NC}"
printf " %bUnable to determine if the detected OS (%s %s) is supported%b\\n" "${COL_LIGHT_RED}" "${detected_os^}" "${detected_version}" "${COL_NC}"
printf " Possible causes for this include:\\n"
printf " - Firewall blocking certain DNS lookups from Pi-hole device\\n"
printf " - ns1.pi-hole.net being blocked (required to obtain TXT record from versions.pi-hole.net containing supported operating systems)\\n"
printf " - Other internet connectivity issues\\n"
else
printf " %b %bUnsupported OS detected: %s %s%b\\n" "${CROSS}" "${COL_LIGHT_RED}" "${detected_os^}" "${detected_version}" "${COL_NC}"
printf " If you are seeing this message and you do have a supported OS, please contact support.\\n"
fi
printf "\\n"
printf " %bhttps://docs.pi-hole.net/main/prerequisites/#supported-operating-systems%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
printf "\\n"
printf " If you wish to attempt to continue anyway, you can try one of the following commands to skip this check:\\n"
printf "\\n"
printf " e.g: If you are seeing this message on a fresh install, you can run:\\n"
printf " %bcurl -sSL https://install.pi-hole.net | sudo PIHOLE_SKIP_OS_CHECK=true bash%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
printf "\\n"
printf " If you are seeing this message after having run pihole -up:\\n"
printf " %bsudo PIHOLE_SKIP_OS_CHECK=true pihole -r%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
printf " (In this case, your previous run of pihole -up will have already updated the local repository)\\n"
printf "\\n"
printf " It is possible that the installation will still fail at this stage due to an unsupported configuration.\\n"
printf " If that is the case, you can feel free to ask the community on Discourse with the %bCommunity Help%b category:\\n" "${COL_LIGHT_RED}" "${COL_NC}"
printf " %bhttps://discourse.pi-hole.net/c/bugs-problems-issues/community-help/%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
printf "\\n"
exit 1
else
printf " %b %bSupported OS detected%b\\n" "${TICK}" "${COL_LIGHT_GREEN}" "${COL_NC}"
fi
else
printf " %b %bPIHOLE_SKIP_OS_CHECK env variable set to true - installer will continue%b\\n" "${INFO}" "${COL_LIGHT_GREEN}" "${COL_NC}"
fi
}
# This function waits for dpkg to unlock, which signals that the previous apt-get command has finished.
test_dpkg_lock() {
i=0
printf " %b Waiting for package manager to finish (up to 30 seconds)\\n" "${INFO}"
# fuser is a program to show which processes use the named files, sockets, or filesystems
# So while the lock is held,
while fuser /var/lib/dpkg/lock >/dev/null 2>&1
do
# we wait half a second,
sleep 0.5
# increase the iterator,
((i=i+1))
# exit if waiting for more then 30 seconds
if [[ $i -gt 60 ]]; then
printf " %b %bError: Could not verify package manager finished and released lock. %b\\n" "${CROSS}" "${COL_LIGHT_RED}" "${COL_NC}"
printf " Attempt to install packages manually and retry.\\n"
exit 1;
fi
done
# and then report success once dpkg is unlocked.
return 0
}
# Compatibility
package_manager_detect() {
# TODO - pull common packages for both distributions out into a common variable, then add
# the distro-specific ones below.
# First check to see if apt-get is installed.
if is_command apt-get ; then
# Set some global variables here
# We don't set them earlier since the installed package manager might be rpm, so these values would be different
PKG_MANAGER="apt-get"
# A variable to store the command used to update the package cache
UPDATE_PKG_CACHE="${PKG_MANAGER} update"
# The command we will use to actually install packages
PKG_INSTALL=("${PKG_MANAGER}" -qq --no-install-recommends install)
# grep -c will return 1 if there are no matches. This is an acceptable condition, so we OR TRUE to prevent set -e exiting the script.
PKG_COUNT="${PKG_MANAGER} -s -o Debug::NoLocking=true upgrade | grep -c ^Inst || true"
# Update package cache
update_package_cache || exit 1
# Check for and determine version number (major and minor) of current php install
local phpVer="php"
if is_command php ; then
phpVer="$(php <<< "<?php echo PHP_VERSION ?>")"
# Check if the first character of the string is numeric
if [[ ${phpVer:0:1} =~ [1-9] ]]; then
printf " %b Existing PHP installation detected : PHP version %s\\n" "${INFO}" "${phpVer}"
printf -v phpInsMajor "%d" "$(php <<< "<?php echo PHP_MAJOR_VERSION ?>")"
printf -v phpInsMinor "%d" "$(php <<< "<?php echo PHP_MINOR_VERSION ?>")"
phpVer="php$phpInsMajor.$phpInsMinor"
else
printf " %b No valid PHP installation detected!\\n" "${CROSS}"
printf " %b PHP version : %s\\n" "${INFO}" "${phpVer}"
printf " %b Aborting installation.\\n" "${CROSS}"
exit 1
fi
fi
# Packages required to perform the os_check (stored as an array)
OS_CHECK_DEPS=(grep dnsutils)
# Packages required to run this install script (stored as an array)
INSTALLER_DEPS=(git iproute2 dialog ca-certificates)
# Packages required to run Pi-hole (stored as an array)
PIHOLE_DEPS=(cron curl iputils-ping psmisc sudo unzip idn2 libcap2-bin dns-root-data libcap2 netcat-openbsd procps)
# Packages required for the Web admin interface (stored as an array)
# It's useful to separate this from Pi-hole, since the two repos are also setup separately
PIHOLE_WEB_DEPS=(lighttpd "${phpVer}-common" "${phpVer}-cgi" "${phpVer}-sqlite3" "${phpVer}-xml" "${phpVer}-intl")
# Prior to PHP8.0, JSON functionality is provided as dedicated module, required by Pi-hole AdminLTE: https://www.php.net/manual/json.installation.php
if [[ -z "${phpInsMajor}" || "${phpInsMajor}" -lt 8 ]]; then
PIHOLE_WEB_DEPS+=("${phpVer}-json")
fi
# The Web server user,
LIGHTTPD_USER="www-data"
# group,
LIGHTTPD_GROUP="www-data"
# and config file
LIGHTTPD_CFG="lighttpd.conf.debian"
# If apt-get is not found, check for rpm.
elif is_command rpm ; then
# Then check if dnf or yum is the package manager
if is_command dnf ; then
PKG_MANAGER="dnf"
else
PKG_MANAGER="yum"
fi
# These variable names match the ones for apt-get. See above for an explanation of what they are for.
PKG_INSTALL=("${PKG_MANAGER}" install -y)
# CentOS package manager returns 100 when there are packages to update so we need to || true to prevent the script from exiting.
PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l || true"
OS_CHECK_DEPS=(grep bind-utils)
INSTALLER_DEPS=(git dialog iproute newt procps-ng which chkconfig ca-certificates)
PIHOLE_DEPS=(cronie curl findutils sudo unzip libidn2 psmisc libcap nmap-ncat)
PIHOLE_WEB_DEPS=(lighttpd lighttpd-fastcgi php-common php-cli php-pdo php-xml php-json php-intl)
LIGHTTPD_USER="lighttpd"
LIGHTTPD_GROUP="lighttpd"
LIGHTTPD_CFG="lighttpd.conf.fedora"
# If neither apt-get or yum/dnf package managers were found
else
# we cannot install required packages
printf " %b No supported package manager found\\n" "${CROSS}"
# so exit the installer
exit
fi
}
select_rpm_php(){
# If the host OS is Fedora,
if grep -qiE 'fedora|fedberry' /etc/redhat-release; then
# all required packages should be available by default with the latest fedora release
: # continue
# or if host OS is CentOS,
elif grep -qiE 'centos|scientific' /etc/redhat-release; then
# Pi-Hole currently supports CentOS 7+ with PHP7+
SUPPORTED_CENTOS_VERSION=7
SUPPORTED_CENTOS_PHP_VERSION=7
# Check current CentOS major release version
CURRENT_CENTOS_VERSION=$(grep -oP '(?<= )[0-9]+(?=\.?)' /etc/redhat-release)
# Check if CentOS version is supported
if [[ $CURRENT_CENTOS_VERSION -lt $SUPPORTED_CENTOS_VERSION ]]; then
printf " %b CentOS %s is not supported.\\n" "${CROSS}" "${CURRENT_CENTOS_VERSION}"
printf " Please update to CentOS release %s or later.\\n" "${SUPPORTED_CENTOS_VERSION}"
# exit the installer
exit
fi
# php-json is not required on CentOS 7 as it is already compiled into php
# verifiy via `php -m | grep json`
if [[ $CURRENT_CENTOS_VERSION -eq 7 ]]; then
# create a temporary array as arrays are not designed for use as mutable data structures
CENTOS7_PIHOLE_WEB_DEPS=()
for i in "${!PIHOLE_WEB_DEPS[@]}"; do
if [[ ${PIHOLE_WEB_DEPS[i]} != "php-json" ]]; then
CENTOS7_PIHOLE_WEB_DEPS+=( "${PIHOLE_WEB_DEPS[i]}" )
fi
done
# re-assign the clean dependency array back to PIHOLE_WEB_DEPS
PIHOLE_WEB_DEPS=("${CENTOS7_PIHOLE_WEB_DEPS[@]}")
unset CENTOS7_PIHOLE_WEB_DEPS
fi
if rpm -qa | grep -qi 'epel'; then
printf " %b EPEL repository already installed\\n" "${TICK}"
else
# CentOS requires the EPEL repository to gain access to Fedora packages
if [[ CURRENT_CENTOS_VERSION -eq 7 ]]; then
EPEL_PKG="https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm"
elif [[ CURRENT_CENTOS_VERSION -eq 8 ]]; then
EPEL_PKG="https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm"
fi
printf " %b Enabling EPEL package repository (https://fedoraproject.org/wiki/EPEL)\\n" "${INFO}"
"${PKG_INSTALL[@]}" ${EPEL_PKG}
printf " %b Installed %s\\n" "${TICK}" "${EPEL_PKG}"
fi
# The default php on CentOS 7.x is 5.4 which is EOL
# Check if the version of PHP available via installed repositories is >= to PHP 7
AVAILABLE_PHP_VERSION=$("${PKG_MANAGER}" info php | grep -i version | grep -o '[0-9]\+' | head -1)
if [[ $AVAILABLE_PHP_VERSION -ge $SUPPORTED_CENTOS_PHP_VERSION ]]; then
# Since PHP 7 is available by default, install via default PHP package names
: # do nothing as PHP is current
printf "PHP 7 is installed"
else
REMI_PKG="remi-release"
REMI_REPO="remi-php72"
REMI_REPO_URL="https://rpms.remirepo.net/enterprise/${REMI_PKG}-$(rpm -E '%{rhel}').rpm"
# The PHP version available via default repositories is older than version 7
dialog --no-shadow --keep-tite \
--title "PHP 7 Update (recommended)" \
--defaultno \
--yesno "PHP 7.x is recommended for both security and language features.\
\\n\\nWould you like to install PHP7 via Remi's RPM repository?\
\\n\\nSee: https://rpms.remirepo.net for more information"\
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_OK}" )
printf " %b Installing PHP 7 via Remi's RPM repository\\n" "${INFO}"
"${PKG_INSTALL[@]}" "yum-utils" &> /dev/null
if rpm -q ${REMI_PKG} &> /dev/null; then
printf " %b Remi's RPM repository is already installed\\n" "${TICK}"
else
printf " %b Enabling Remi's RPM repository (https://rpms.remirepo.net)\\n" "${INFO}"
yum -y install "${REMI_REPO_URL}"
printf " %b Installed %s from %s\\n" "${TICK}" "${REMI_PKG}" "${REMI_REPO_URL}"
printf " %b Remi's RPM repository has been enabled for PHP7\\n" "${TICK}"
fi
yum-config-manager --disable 'remi-php*'
yum-config-manager --enable "${REMI_REPO}"
# trigger an install/update of PHP to ensure previous version of PHP is updated from REMI
if "${PKG_INSTALL[@]}" "php-cli" &> /dev/null; then
printf " %b PHP7 installed/updated via Remi's RPM repository\\n" "${TICK}"
else
printf " %b There was a problem updating to PHP7 via Remi's RPM repository\\n" "${CROSS}"
exit 1
fi
;;
# User chose not to install PHP 7 via Remi's RPM repository
"${DIALOG_CANCEL}")
# User decided to NOT update PHP from REMI, attempt to install the default available PHP version
printf " %b User opt-out of PHP 7 upgrade on CentOS. Deprecated PHP may be in use.\\n" "${INFO}"
;;
# User closed the dialog window
"${DIALOG_ESC}")
printf " %b Escape pressed, exiting installer at Remi dialog window\\n" "${CROSS}"
exit 1
;;
esac
fi
else
# Warn user of unsupported version of Fedora or CentOS
dialog --no-shadow --keep-tite \
--title "Unsupported RPM based distribution" \
--defaultno \
--no-button "Exit" \
--yes-button "Continue" \
--yesno "Would you like to continue installation on an unsupported RPM based distribution?\
\\n\\nPlease ensure the following packages have been installed manually:\
\\n\\n- lighttpd\\n- lighttpd-fastcgi\\n- PHP version 7+"\
"${r}" "${c}" && result=0 || result=$?
case ${result} in
# User chose to continue installation on an unsupported RPM based distribution
"${DIALOG_OK}")
printf " %b User opted to continue installation on an unsupported RPM based distribution.\\n" "${INFO}"
;;
# User chose not to continue installation on an unsupported RPM based distribution
"${DIALOG_CANCEL}")
printf " %b User opted not to continue installation on an unsupported RPM based distribution.\\n" "${INFO}"
exit 1
;;
"${DIALOG_ESC}")
printf " %b Escape pressed, exiting installer at unsupported RPM based distribution dialog window\\n" "${CROSS}"
exit 1
;;
esac
fi
}
# A function for checking if a directory is a git repository
is_repo() {
# Use a named, local variable instead of the vague $1, which is the first argument passed to this function
# These local variables should always be lowercase
local directory="${1}"
# A variable to store the return code
local rc
# If the first argument passed to this function is a directory,
if [[ -d "${directory}" ]]; then
# move into the directory
pushd "${directory}" &> /dev/null || return 1
# Use git to check if the directory is a repo
# git -C is not used here to support git versions older than 1.8.4
git status --short &> /dev/null || rc=$?
# If the command was not successful,
else
# Set a non-zero return code if directory does not exist
rc=1
fi
# Move back into the directory the user started in
popd &> /dev/null || return 1
# Return the code; if one is not set, return 0
return "${rc:-0}"
}
# A function to clone a repo
make_repo() {
# Set named variables for better readability
local directory="${1}"
local remoteRepo="${2}"
# The message to display when this function is running
str="Clone ${remoteRepo} into ${directory}"
# Display the message and use the color table to preface the message with an "info" indicator
printf " %b %s..." "${INFO}" "${str}"
# If the directory exists,
if [[ -d "${directory}" ]]; then
# Return with a 1 to exit the installer. We don't want to overwrite what could already be here in case it is not ours
str="Unable to clone ${remoteRepo} into ${directory} : Directory already exists"
printf "%b %b%s\\n" "${OVER}" "${CROSS}" "${str}"
return 1
fi
# Clone the repo and return the return code from this command
git clone -q --depth 20 "${remoteRepo}" "${directory}" &> /dev/null || return $?
# Move into the directory that was passed as an argument
pushd "${directory}" &> /dev/null || return 1
# Check current branch. If it is master, then reset to the latest available tag.
# In case extra commits have been added after tagging/release (i.e in case of metadata updates/README.MD tweaks)
curBranch=$(git rev-parse --abbrev-ref HEAD)
if [[ "${curBranch}" == "master" ]]; then
# If we're calling make_repo() then it should always be master, we may not need to check.
git reset --hard "$(git describe --abbrev=0 --tags)" || return $?
fi
# Show a colored message showing it's status
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
# Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
chmod -R a+rX "${directory}"
# Move back into the original directory
popd &> /dev/null || return 1
return 0
}
# We need to make sure the repos are up-to-date so we can effectively install Clean out the directory if it exists for git to clone into
update_repo() {
# Use named, local variables
# As you can see, these are the same variable names used in the last function,
# but since they are local, their scope does not go beyond this function
# This helps prevent the wrong value from being assigned if you were to set the variable as a GLOBAL one
local directory="${1}"
local curBranch
# A variable to store the message we want to display;
# Again, it's useful to store these in variables in case we need to reuse or change the message;
# we only need to make one change here
local str="Update repo in ${1}"
# Move into the directory that was passed as an argument
pushd "${directory}" &> /dev/null || return 1
# Let the user know what's happening
printf " %b %s..." "${INFO}" "${str}"
# Stash any local commits as they conflict with our working code
git stash --all --quiet &> /dev/null || true # Okay for stash failure
git clean --quiet --force -d || true # Okay for already clean directory
# Pull the latest commits
git pull --no-rebase --quiet &> /dev/null || return $?
# Check current branch. If it is master, then reset to the latest available tag.
# In case extra commits have been added after tagging/release (i.e in case of metadata updates/README.MD tweaks)
curBranch=$(git rev-parse --abbrev-ref HEAD)
if [[ "${curBranch}" == "master" ]]; then
git reset --hard "$(git describe --abbrev=0 --tags)" || return $?
fi
# Show a completion message
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
# Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
chmod -R a+rX "${directory}"
# Move back into the original directory
popd &> /dev/null || return 1
return 0
}
# A function that combines the previous git functions to update or clone a repo
getGitFiles() {
# Setup named variables for the git repos
# We need the directory
local directory="${1}"
# as well as the repo URL
local remoteRepo="${2}"
# A local variable containing the message to be displayed
local str="Check for existing repository in ${1}"
# Show the message
printf " %b %s..." "${INFO}" "${str}"
# Check if the directory is a repository
if is_repo "${directory}"; then
# Show that we're checking it
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
# Update the repo, returning an error message on failure
update_repo "${directory}" || { printf "\\n %b: Could not update local repository. Contact support.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
# If it's not a .git repo,
else
# Show an error
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
# Attempt to make the repository, showing an error on failure
make_repo "${directory}" "${remoteRepo}" || { printf "\\n %bError: Could not update local repository. Contact support.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
fi
echo ""
# Success via one of the two branches, as the commands would exit if they failed.
return 0
}
# Reset a repo to get rid of any local changed
resetRepo() {
# Use named variables for arguments
local directory="${1}"
# Move into the directory
pushd "${directory}" &> /dev/null || return 1
# Store the message in a variable
str="Resetting repository within ${1}..."
# Show the message
printf " %b %s..." "${INFO}" "${str}"
# Use git to remove the local changes
git reset --hard &> /dev/null || return $?
# Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
chmod -R a+rX "${directory}"
# And show the status
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
# Return to where we came from
popd &> /dev/null || return 1
# Function succeeded, as "git reset" would have triggered a return earlier if it failed
return 0
}
find_IPv4_information() {
# Detects IPv4 address used for communication to WAN addresses.
# Accepts no arguments, returns no values.
# Named, local variables
local route
local IPv4bare
# Find IP used to route to outside world by checking the the route to Google's public DNS server
route=$(ip route get 8.8.8.8)
# Get just the interface IPv4 address
# shellcheck disable=SC2059,SC2086
# disabled as we intentionally want to split on whitespace and have printf populate
# the variable with just the first field.
printf -v IPv4bare "$(printf ${route#*src })"
# Get the default gateway IPv4 address (the way to reach the Internet)
# shellcheck disable=SC2059,SC2086
printf -v IPv4gw "$(printf ${route#*via })"
if ! valid_ip "${IPv4bare}" ; then
IPv4bare="127.0.0.1"
fi
# Append the CIDR notation to the IP address, if valid_ip fails this should return 127.0.0.1/8
IPV4_ADDRESS=$(ip -oneline -family inet address show | grep "${IPv4bare}/" | awk '{print $4}' | awk 'END {print}')
}
# Get available interfaces that are UP
get_available_interfaces() {
# There may be more than one so it's all stored in a variable
availableInterfaces=$(ip --oneline link show up | grep -v "lo" | awk '{print $2}' | cut -d':' -f1 | cut -d'@' -f1)
}
# A function for displaying the dialogs the user sees when first running the installer
welcomeDialogs() {
# Display the welcome dialog using an appropriately sized window via the calculation conducted earlier in the script
dialog --no-shadow --clear --keep-tite \
--backtitle "Welcome" \
--title "Pi-hole Automated Installer" \
--msgbox "\\n\\nThis installer will transform your device into a network-wide ad blocker!" \
"${r}" "${c}" \
--and-widget --clear \
--backtitle "Support Pi-hole" \
--title "Open Source Software" \
--msgbox "\\n\\nThe Pi-hole is free, but powered by your donations: https://pi-hole.net/donate/" \
"${r}" "${c}" \
--and-widget --clear \
--colors \
--backtitle "Initiating network interface" \
--title "Static IP Needed" \
--no-button "Exit" --yes-button "Continue" \
--defaultno \
--yesno "\\n\\nThe Pi-hole is a SERVER so it needs a STATIC IP ADDRESS to function properly.\\n\\n\
\\Zb\\Z1IMPORTANT:\\Zn If you have not already done so, you must ensure that this device has a static IP.\\n\\n\
Depending on your operating system, there are many ways to achieve this, through DHCP reservation, or by manually assigning one.\\n\\n\
Please continue when the static addressing has been configured."\
"${r}" "${c}" && result=0 || result="$?"
case "${result}" in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Installer exited at static IP message.\\n" "${INFO}"
exit 1
;;
esac
}
# A function that lets the user pick an interface to use with Pi-hole
chooseInterface() {
# Turn the available interfaces into a string so it can be used with dialog
local interfacesList
# Number of available interfaces
local interfaceCount
# POSIX compliant way to get the number of elements in an array
interfaceCount=$(printf "%s\n" "${availableInterfaces}" | wc -l)
# If there is one interface,
if [[ "${interfaceCount}" -eq 1 ]]; then
# Set it as the interface to use since there is no other option
PIHOLE_INTERFACE="${availableInterfaces}"
# Otherwise,
else
# Set status for the first entry to be selected
status="ON"
# While reading through the available interfaces
for interface in ${availableInterfaces}; do
# Put all these interfaces into a string
interfacesList="${interfacesList}${interface} available ${status} "
# All further interfaces are deselected
status="OFF"
done
# shellcheck disable=SC2086
# Disable check for double quote here as we are passing a string with spaces
PIHOLE_INTERFACE=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancel-label "Exit" --ok-label "Select" \
--radiolist "Choose An Interface (press space to toggle selection)" \
${r} ${c} "${interfaceCount}" ${interfacesList})
result=$?
case ${result} in
"${DIALOG_CANCEL}"|"${DIALOG_ESC}")
# Show an error message and exit
printf " %b %s\\n" "${CROSS}" "No interface selected, exiting installer"
exit 1
;;
esac
printf " %b Using interface: %s\\n" "${INFO}" "${PIHOLE_INTERFACE}"
fi
}
# This lets us prefer ULA addresses over GUA
# This caused problems for some users when their ISP changed their IPv6 addresses
# See https://github.com/pi-hole/pi-hole/issues/1473#issuecomment-301745953
testIPv6() {
# first will contain fda2 (ULA)
printf -v first "%s" "${1%%:*}"
# value1 will contain 253 which is the decimal value corresponding to 0xFD
value1=$(( (0x$first)/256 ))
# value2 will contain 162 which is the decimal value corresponding to 0xA2
value2=$(( (0x$first)%256 ))
# the ULA test is testing for fc00::/7 according to RFC 4193
if (( (value1&254)==252 )); then
# echoing result to calling function as return value
echo "ULA"
fi
# the GUA test is testing for 2000::/3 according to RFC 4291
if (( (value1&112)==32 )); then
# echoing result to calling function as return value
echo "GUA"
fi
# the LL test is testing for fe80::/10 according to RFC 4193
if (( (value1)==254 )) && (( (value2&192)==128 )); then
# echoing result to calling function as return value
echo "Link-local"
fi
}
find_IPv6_information() {
# Detects IPv6 address used for communication to WAN addresses.
IPV6_ADDRESSES=($(ip -6 address | grep 'scope global' | awk '{print $2}'))
# For each address in the array above, determine the type of IPv6 address it is
for i in "${IPV6_ADDRESSES[@]}"; do
# Check if it's ULA, GUA, or LL by using the function created earlier
result=$(testIPv6 "$i")
# If it's a ULA address, use it and store it as a global variable
[[ "${result}" == "ULA" ]] && ULA_ADDRESS="${i%/*}"
# If it's a GUA address, use it and store it as a global variable
[[ "${result}" == "GUA" ]] && GUA_ADDRESS="${i%/*}"
# Else if it's a Link-local address, we cannot use it, so just continue
done
# Determine which address to be used: Prefer ULA over GUA or don't use any if none found
# If the ULA_ADDRESS contains a value,
if [[ ! -z "${ULA_ADDRESS}" ]]; then
# set the IPv6 address to the ULA address
IPV6_ADDRESS="${ULA_ADDRESS}"
# Show this info to the user
printf " %b Found IPv6 ULA address\\n" "${INFO}"
# Otherwise, if the GUA_ADDRESS has a value,
elif [[ ! -z "${GUA_ADDRESS}" ]]; then
# Let the user know
printf " %b Found IPv6 GUA address\\n" "${INFO}"
# And assign it to the global variable
IPV6_ADDRESS="${GUA_ADDRESS}"
# If none of those work,
else
printf " %b Unable to find IPv6 ULA/GUA address\\n" "${INFO}"
# So set the variable to be empty
IPV6_ADDRESS=""
fi
}
# A function to collect IPv4 and IPv6 information of the device
collect_v4andv6_information() {
find_IPv4_information
# Echo the information to the user
printf " %b IPv4 address: %s\\n" "${INFO}" "${IPV4_ADDRESS}"
# if `dhcpcd` is used offer to set this as static IP for the device
if [[ -f "/etc/dhcpcd.conf" ]]; then
# configure networking via dhcpcd
getStaticIPv4Settings
fi
find_IPv6_information
printf " %b IPv6 address: %s\\n" "${INFO}" "${IPV6_ADDRESS}"
}
getStaticIPv4Settings() {
# Local, named variables
local ipSettingsCorrect
local DHCPChoice
# Ask if the user wants to use DHCP settings as their static IP
# This is useful for users that are using DHCP reservations; we can use the information gathered
DHCPChoice=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancel-label "Exit" --ok-label "Continue" \
--backtitle "Calibrating network interface" \
--title "Static IP Address" \
--menu "Do you want to use your current network settings as a static address?\\n \
IP address: ${IPV4_ADDRESS}\\n \
Gateway: ${IPv4gw}\\n" \
"${r}" "${c}" 3 \
"Yes" "Set static IP using current values" \
"No" "Set static IP using custom values" \
"Skip" "I will set a static IP later, or have already done so")
result=$?
case ${result} in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
case ${DHCPChoice} in
"Skip")
return
;;
"Yes")
# If they choose yes, let the user know that the IP address will not be available via DHCP and may cause a conflict.
dialog --no-shadow --keep-tite \
--cancel-label "Exit" \
--backtitle "IP information" \
--title "FYI: IP Conflict" \
--msgbox "\\nIt is possible your router could still try to assign this IP to a device, which would cause a conflict\
But in most cases the router is smart enough to not do that.\
If you are worried, either manually set the address, or modify the DHCP reservation pool so it does not include the IP you want.\
It is also possible to use a DHCP reservation, but if you are going to do that, you might as well set a static address."\
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
;;
"No")
# Otherwise, we need to ask the user to input their desired settings.
# Start by getting the IPv4 address (pre-filling it with info gathered from DHCP)
# Start a loop to let the user enter their information with the chance to go back and edit it if necessary
ipSettingsCorrect=false
until [[ "${ipSettingsCorrect}" = True ]]; do
# Ask for the IPv4 address
_staticIPv4Temp=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancer-label "Exit" \
--ok-label "Continue" \
--backtitle "Calibrating network interface" \
--title "IPv4 Address" \
--form "\\nEnter your desired IPv4 address" \
"${r}" "${c}" 0 \
"IPv4 Address:" 1 1 "${IPV4_ADDRESS}" 1 15 19 0 \
"IPv4 Gateway:" 2 1 "${IPv4gw}" 2 15 19 0)
result=$?
case ${result} in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
IPV4_ADDRESS=${_staticIPv4Temp%$'\n'*}
IPv4gw=${_staticIPv4Temp#*$'\n'}
# Give the user a chance to review their settings before moving on
dialog --no-shadow --keep-tite \
--no-label "Edit IP" \
--backtitle "Calibrating network interface" \
--title "Static IP Address" \
--defaultno \
--yesno "Are these settings correct?
IP address: ${IPV4_ADDRESS}
Gateway: ${IPv4gw}" \
"${r}" "${c}" && ipSettingsCorrect=True
done
;;
esac
setDHCPCD
}
# Configure networking via dhcpcd
setDHCPCD() {
# Check if the IP is already in the file
if grep -q "${IPV4_ADDRESS}" /etc/dhcpcd.conf; then
printf " %b Static IP already configured\\n" "${INFO}"
# If it's not,
else
# we can append these lines to dhcpcd.conf to enable a static IP
echo "interface ${PIHOLE_INTERFACE}
static ip_address=${IPV4_ADDRESS}
static routers=${IPv4gw}
static domain_name_servers=${PIHOLE_DNS_1} ${PIHOLE_DNS_2}" | tee -a /etc/dhcpcd.conf >/dev/null
# Then use the ip command to immediately set the new address
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
# Also give a warning that the user may need to reboot their system
printf " %b Set IP address to %s\\n" "${TICK}" "${IPV4_ADDRESS%/*}"
printf " %b You may need to restart after the install is complete\\n" "${INFO}"
fi
}
# Check an IP address to see if it is a valid one
valid_ip() {
# Local, named variables
local ip=${1}
local stat=1
# Regex matching one IPv4 component, i.e. an integer from 0 to 255.
# See https://tools.ietf.org/html/rfc1340
local ipv4elem="(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]?|0)";
# Regex matching an optional port (starting with '#') range of 1-65536
local portelem="(#(6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{0,3}|0))?";
# Build a full IPv4 regex from the above subexpressions
local regex="^${ipv4elem}\\.${ipv4elem}\\.${ipv4elem}\\.${ipv4elem}${portelem}$"
# Evaluate the regex, and return the result
[[ $ip =~ ${regex} ]]
stat=$?
return "${stat}"
}
valid_ip6() {
local ip=${1}
local stat=1
# Regex matching one IPv6 element, i.e. a hex value from 0000 to FFFF
local ipv6elem="[0-9a-fA-F]{1,4}"
# Regex matching an IPv6 CIDR, i.e. 1 to 128
local v6cidr="(\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])){0,1}"
# Regex matching an optional port (starting with '#') range of 1-65536
local portelem="(#(6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{0,3}|0))?";
# Build a full IPv6 regex from the above subexpressions
local regex="^(((${ipv6elem}))*((:${ipv6elem}))*::((${ipv6elem}))*((:${ipv6elem}))*|((${ipv6elem}))((:${ipv6elem})){7})${v6cidr}${portelem}$"
# Evaluate the regex, and return the result
[[ ${ip} =~ ${regex} ]]
stat=$?
return "${stat}"
}
# A function to choose the upstream DNS provider(s)
setDNS() {
# Local, named variables
local DNSSettingsCorrect
# In an array, list the available upstream providers
DNSChooseOptions=()
local DNSServerCount=0
# Save the old Internal Field Separator in a variable,
OIFS=$IFS
# and set the new one to newline
IFS=$'\n'
# Put the DNS Servers into an array
for DNSServer in ${DNS_SERVERS}
do
DNSName="$(cut -d';' -f1 <<< "${DNSServer}")"
DNSChooseOptions[DNSServerCount]="${DNSName}"
(( DNSServerCount=DNSServerCount+1 ))
DNSChooseOptions[DNSServerCount]=""
(( DNSServerCount=DNSServerCount+1 ))
done
DNSChooseOptions[DNSServerCount]="Custom"
(( DNSServerCount=DNSServerCount+1 ))
DNSChooseOptions[DNSServerCount]=""
# Restore the IFS to what it was
IFS=${OIFS}
# In a dialog, show the options
DNSchoices=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancel-label "Exit" \
--menu "Select Upstream DNS Provider. To use your own, select Custom." "${r}" "${c}" 7 \
"${DNSChooseOptions[@]}")
result=$?
case ${result} in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
# Depending on the user's choice, set the GLOBAL variables to the IP of the respective provider
if [[ "${DNSchoices}" == "Custom" ]]
then
# Loop until we have a valid DNS setting
until [[ "${DNSSettingsCorrect}" = True ]]; do
# Signal value, to be used if the user inputs an invalid IP address
strInvalid="Invalid"
if [[ ! "${PIHOLE_DNS_1}" ]]; then
if [[ ! "${PIHOLE_DNS_2}" ]]; then
# If the first and second upstream servers do not exist, do not prepopulate an IP address
prePopulate=""
else
# Otherwise, prepopulate the dialogue with the appropriate DNS value(s)
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}, ${PIHOLE_DNS_2}"
fi
# Prompt the user to enter custom upstream servers
piholeDNS=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancel-label "Exit" \
--backtitle "Specify Upstream DNS Provider(s)" \
--inputbox "Enter your desired upstream DNS provider(s), separated by a comma.\
If you want to specify a port other than 53, separate it with a hash.\
\\n\\nFor example '8.8.8.8, 8.8.4.4' or '127.0.0.1#5335'"\
"${r}" "${c}" "${prePopulate}")
result=$?
case ${result} in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
# Clean user input and replace whitespace with comma.
piholeDNS=$(sed 's/[, \t]\+/,/g' <<< "${piholeDNS}")
# Separate the user input into the two DNS values (separated by a comma)
printf -v PIHOLE_DNS_1 "%s" "${piholeDNS%%,*}"
printf -v PIHOLE_DNS_2 "%s" "${piholeDNS##*,}"
# If the first DNS value is invalid or empty, this if statement will be true and we will set PIHOLE_DNS_1="Invalid"
if ! valid_ip "${PIHOLE_DNS_1}" || [[ ! "${PIHOLE_DNS_1}" ]]; then
PIHOLE_DNS_1=${strInvalid}
fi
# If the second DNS value is invalid or empty, this if statement will be true and we will set PIHOLE_DNS_2="Invalid"
if ! valid_ip "${PIHOLE_DNS_2}" && [[ "${PIHOLE_DNS_2}" ]]; then
PIHOLE_DNS_2=${strInvalid}
fi
# If either of the DNS servers are invalid,
if [[ "${PIHOLE_DNS_1}" == "${strInvalid}" ]] || [[ "${PIHOLE_DNS_2}" == "${strInvalid}" ]]; then
# explain this to the user,
dialog --no-shadow --keep-tite \
--title "Invalid IP Address(es)" \
--backtitle "Invalid IP" \
--msgbox "\\nOne or both of the entered IP addresses were invalid. Please try again.\
\\n\\nInvalid IPs: ${PIHOLE_DNS_1}, ${PIHOLE_DNS_2}" \
"${r}" "${c}"
# set the variables back to nothing,
if [[ "${PIHOLE_DNS_1}" == "${strInvalid}" ]]; then
PIHOLE_DNS_1=""
fi
if [[ "${PIHOLE_DNS_2}" == "${strInvalid}" ]]; then
PIHOLE_DNS_2=""
fi
# and continue the loop.
DNSSettingsCorrect=False
else
dialog --no-shadow --keep-tite \
--backtitle "Specify Upstream DNS Provider(s)" \
--title "Upstream DNS Provider(s)" \
--yesno "Are these settings correct?\\n\\tDNS Server 1:\\t${PIHOLE_DNS_1}\\n\\tDNS Server 2:\\t${PIHOLE_DNS_2}" \
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_OK}")
DNSSettingsCorrect=True
;;
"${DIALOG_CANCEL}")
DNSSettingsCorrect=False
;;
"${DIALOG_ESC}")
printf " %b Escape pressed, exiting installer at DNS Settings%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
fi
done
else
# Save the old Internal Field Separator in a variable,
OIFS=$IFS
# and set the new one to newline
IFS=$'\n'
for DNSServer in ${DNS_SERVERS}
do
DNSName="$(cut -d';' -f1 <<< "${DNSServer}")"
if [[ "${DNSchoices}" == "${DNSName}" ]]
then
PIHOLE_DNS_1="$(cut -d';' -f2 <<< "${DNSServer}")"
PIHOLE_DNS_2="$(cut -d';' -f3 <<< "${DNSServer}")"
break
fi
done
# Restore the IFS to what it was
IFS=${OIFS}
fi
# Display final selection
local DNSIP=${PIHOLE_DNS_1}
[[ -z ${PIHOLE_DNS_2} ]] || DNSIP+=", ${PIHOLE_DNS_2}"
printf " %b Using upstream DNS: %s (%s)\\n" "${INFO}" "${DNSchoices}" "${DNSIP}"
}
# Allow the user to enable/disable logging
setLogging() {
# Ask the user if they want to enable logging
dialog --no-shadow --keep-tite \
--backtitle "Pihole Installation" \
--title "Enable Logging" \
--yesno "\\n\\nWould you like to enable query logging?" \
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_OK}")
# If they chose yes,
printf " %b Query Logging on.\\n" "${INFO}"
QUERY_LOGGING=true
;;
"${DIALOG_CANCEL}")
# If they chose no,
printf " %b Query Logging off.\\n" "${INFO}"
QUERY_LOGGING=false
;;
"${DIALOG_ESC}")
# User pressed <ESC>
printf " %b Escape pressed, exiting installer at Query Logging choice.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
}
# Allow the user to set their FTL privacy level
setPrivacyLevel() {
# The default selection is level 0
PRIVACY_LEVEL=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancel-label "Exit" \
--ok-label "Continue" \
--radiolist "Select a privacy mode for FTL. https://docs.pi-hole.net/ftldns/privacylevels/" \
"${r}" "${c}" 6 \
"0" "Show everything" on \
"1" "Hide domains" off \
"2" "Hide domains and clients" off \
"3" "Anonymous mode" off)
result=$?
case ${result} in
"${DIALOG_OK}")
printf " %b Using privacy level: %s\\n" "${INFO}" "${PRIVACY_LEVEL}"
;;
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancelled privacy level selection.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
}
# Function to ask the user if they want to install the dashboard
setAdminFlag() {
# Similar to the logging function, ask what the user wants
dialog --no-shadow --keep-tite \
--backtitle "Pihole Installation" \
--title "Admin Web Interface" \
--yesno "\\n\\nDo you want to install the Admin Web Interface?" \
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_OK}")
# If they chose yes,
printf " %b Installing Admin Web Interface\\n" "${INFO}"
# Set the flag to install the web interface
INSTALL_WEB_INTERFACE=true
;;
"${DIALOG_CANCEL}")
# If they chose no,
printf " %b Not installing Admin Web Interface\\n" "${INFO}"
# Set the flag to not install the web interface
INSTALL_WEB_INTERFACE=false
INSTALL_WEB_SERVER=false
;;
"${DIALOG_ESC}")
# User pressed <ESC>
printf " %b Escape pressed, exiting installer at Admin Web Interface choice.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
# If the user wants to install the Web admin interface (i.e. it has not been deselected above)
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# Get list of required PHP modules, excluding base package (common) and handler (cgi)
local i php_modules
for i in "${PIHOLE_WEB_DEPS[@]}"; do [[ $i == 'php'* && $i != *'-common' && $i != *'-cgi' ]] && php_modules+=" ${i#*-}"; done
dialog --no-shadow --keep-tite \
--backtitle "Pi-hole Installation" \
--title "Web Server" \
--yesno "\\n\\nA web server is required for the Admin Web Interface.\
\\n\\nDo you want to install lighttpd and the required PHP modules?\
\\n\\nNB: If you disable this, and, do not have an existing web server \
and required PHP modules (${php_modules# }) installed, the web interface \
will not function. Additionally the web server user needs to be member of \
the \"pihole\" group for full functionality." \
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_OK}")
# If they chose yes,
printf " %b Installing lighttpd\\n" "${INFO}"
# Set the flag to install the web server
INSTALL_WEB_SERVER=true
;;
"${DIALOG_CANCEL}")
# If they chose no,
printf " %b Not installing lighttpd\\n" "${INFO}"
# Set the flag to not install the web server
INSTALL_WEB_SERVER=false
;;
"${DIALOG_ESC}")
# User pressed <ESC>
printf " %b Escape pressed, exiting installer at web server choice.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
fi
}
# A function to display a list of example blocklists for users to select
chooseBlocklists() {
# Back up any existing adlist file, on the off chance that it exists. Useful in case of a reconfigure.
if [[ -f "${adlistFile}" ]]; then
mv "${adlistFile}" "${adlistFile}.old"
fi
# Let user select (or not) blocklists
dialog --no-shadow --keep-tite \
--backtitle "Pi-hole Installation" \
--title "Blocklists" \
--yesno "\\nPi-hole relies on third party lists in order to block ads.\
\\n\\nYou can use the suggestion below, and/or add your own after installation.\
\\n\\nSelect 'Yes' to include:\
\\n\\nStevenBlack's Unified Hosts List" \
"${r}" "${c}" && result=0 || result=$?
case ${result} in
"${DIALOG_OK}")
# If they chose yes,
printf " %b Installing StevenBlack's Unified Hosts List\\n" "${INFO}"
echo "https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts" >> "${adlistFile}"
;;
"${DIALOG_CANCEL}")
# If they chose no,
printf " %b Not installing StevenBlack's Unified Hosts List\\n" "${INFO}"
;;
"${DIALOG_ESC}")
# User pressed <ESC>
printf " %b Escape pressed, exiting installer at blocklist choice.%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
# Create an empty adList file with appropriate permissions.
if [ ! -f "${adlistFile}" ]; then
install -m 644 /dev/null "${adlistFile}"
else
chmod 644 "${adlistFile}"
fi
}
# Used only in unattended setup
# If there is already the adListFile, we keep it, else we create it using all default lists
installDefaultBlocklists() {
# In unattended setup, could be useful to use userdefined blocklist.
# If this file exists, we avoid overriding it.
if [[ -f "${adlistFile}" ]]; then
return;
fi
echo "https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts" >> "${adlistFile}"
}
# Check if /etc/dnsmasq.conf is from pi-hole. If so replace with an original and install new in .d directory
version_check_dnsmasq() {
# Local, named variables
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_pihole_id_string2="# Dnsmasq config for Pi-hole's FTLDNS"
local dnsmasq_original_config="${PI_HOLE_LOCAL_REPO}/advanced/dnsmasq.conf.original"
local dnsmasq_pihole_01_source="${PI_HOLE_LOCAL_REPO}/advanced/01-pihole.conf"
local dnsmasq_pihole_01_target="/etc/dnsmasq.d/01-pihole.conf"
local dnsmasq_rfc6761_06_source="${PI_HOLE_LOCAL_REPO}/advanced/06-rfc6761.conf"
local dnsmasq_rfc6761_06_target="/etc/dnsmasq.d/06-rfc6761.conf"
# If the dnsmasq config file exists
if [[ -f "${dnsmasq_conf}" ]]; then
printf " %b Existing dnsmasq.conf found..." "${INFO}"
# If a specific string is found within this file, we presume it's from older versions on Pi-hole,
if grep -q "${dnsmasq_pihole_id_string}" "${dnsmasq_conf}" ||
grep -q "${dnsmasq_pihole_id_string2}" "${dnsmasq_conf}"; then
printf " it is from a previous Pi-hole install.\\n"
printf " %b Backing up dnsmasq.conf to dnsmasq.conf.orig..." "${INFO}"
# so backup the original file,
mv -f "${dnsmasq_conf}" "${dnsmasq_conf_orig}"
printf "%b %b Backing up dnsmasq.conf to dnsmasq.conf.orig...\\n" "${OVER}" "${TICK}"
printf " %b Restoring default dnsmasq.conf..." "${INFO}"
# and replace it with the default
install -D -m 644 -T "${dnsmasq_original_config}" "${dnsmasq_conf}"
printf "%b %b Restoring default dnsmasq.conf...\\n" "${OVER}" "${TICK}"
else
# Otherwise, don't to anything
printf " it is not a Pi-hole file, leaving alone!\\n"
fi
else
# If a file cannot be found,
printf " %b No dnsmasq.conf found... restoring default dnsmasq.conf..." "${INFO}"
# restore the default one
install -D -m 644 -T "${dnsmasq_original_config}" "${dnsmasq_conf}"
printf "%b %b No dnsmasq.conf found... restoring default dnsmasq.conf...\\n" "${OVER}" "${TICK}"
fi
printf " %b Installing %s..." "${INFO}" "${dnsmasq_pihole_01_target}"
# Check to see if dnsmasq directory exists (it may not due to being a fresh install and dnsmasq no longer being a dependency)
if [[ ! -d "/etc/dnsmasq.d" ]];then
install -d -m 755 "/etc/dnsmasq.d"
fi
# Copy the new Pi-hole DNS config file into the dnsmasq.d directory
install -D -m 644 -T "${dnsmasq_pihole_01_source}" "${dnsmasq_pihole_01_target}"
printf "%b %b Installed %s\n" "${OVER}" "${TICK}" "${dnsmasq_pihole_01_target}"
# Replace our placeholder values with the GLOBAL DNS variables that we populated earlier
# First, swap in the interface to listen on,
sed -i "s/@INT@/$PIHOLE_INTERFACE/" "${dnsmasq_pihole_01_target}"
if [[ "${PIHOLE_DNS_1}" != "" ]]; then
# then swap in the primary DNS server.
sed -i "s/@DNS1@/$PIHOLE_DNS_1/" "${dnsmasq_pihole_01_target}"
else
# Otherwise, remove the line which sets DNS1.
sed -i '/^server=@DNS1@/d' "${dnsmasq_pihole_01_target}"
fi
# Ditto if DNS2 is not empty
if [[ "${PIHOLE_DNS_2}" != "" ]]; then
sed -i "s/@DNS2@/$PIHOLE_DNS_2/" "${dnsmasq_pihole_01_target}"
else
sed -i '/^server=@DNS2@/d' "${dnsmasq_pihole_01_target}"
fi
# Set the cache size
sed -i "s/@CACHE_SIZE@/$CACHE_SIZE/" "${dnsmasq_pihole_01_target}"
sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' "${dnsmasq_conf}"
# If the user does not want to enable logging,
if [[ "${QUERY_LOGGING}" == false ]] ; then
# disable it by commenting out the directive in the DNS config file
sed -i 's/^log-queries/#log-queries/' "${dnsmasq_pihole_01_target}"
else
# Otherwise, enable it by uncommenting the directive in the DNS config file
sed -i 's/^#log-queries/log-queries/' "${dnsmasq_pihole_01_target}"
fi
printf " %b Installing %s..." "${INFO}" "${dnsmasq_rfc6761_06_source}"
install -D -m 644 -T "${dnsmasq_rfc6761_06_source}" "${dnsmasq_rfc6761_06_target}"
printf "%b %b Installed %s\n" "${OVER}" "${TICK}" "${dnsmasq_rfc6761_06_target}"
}
# Clean an existing installation to prepare for upgrade/reinstall
clean_existing() {
# Local, named variables
# ${1} Directory to clean
local clean_directory="${1}"
# Pop the first argument, and shift all addresses down by one (i.e. ${2} becomes ${1})
shift
# Then, we can access all arguments ($@) without including the directory to clean
local old_files=( "$@" )
# Remove each script in the old_files array
for script in "${old_files[@]}"; do
rm -f "${clean_directory}/${script}.sh"
done
}
# Install the scripts from repository to their various locations
installScripts() {
# Local, named variables
local str="Installing scripts from ${PI_HOLE_LOCAL_REPO}"
printf " %b %s..." "${INFO}" "${str}"
# Clear out script files from Pi-hole scripts directory.
clean_existing "${PI_HOLE_INSTALL_DIR}" "${PI_HOLE_FILES[@]}"
# Install files from local core repository
if is_repo "${PI_HOLE_LOCAL_REPO}"; then
# move into the directory
cd "${PI_HOLE_LOCAL_REPO}"
# Install the scripts by:
# -o setting the owner to the user
# -Dm755 create all leading components of destination except the last, then copy the source to the destination and setting the permissions to 755
#
# This first one is the directory
install -o "${USER}" -Dm755 -d "${PI_HOLE_INSTALL_DIR}"
# The rest are the scripts Pi-hole needs
install -o "${USER}" -Dm755 -t "${PI_HOLE_INSTALL_DIR}" gravity.sh
install -o "${USER}" -Dm755 -t "${PI_HOLE_INSTALL_DIR}" ./advanced/Scripts/*.sh
install -o "${USER}" -Dm755 -t "${PI_HOLE_INSTALL_DIR}" ./automated\ install/uninstall.sh
install -o "${USER}" -Dm755 -t "${PI_HOLE_INSTALL_DIR}" ./advanced/Scripts/COL_TABLE
install -o "${USER}" -Dm755 -t "${PI_HOLE_BIN_DIR}" pihole
install -Dm644 ./advanced/bash-completion/pihole /etc/bash_completion.d/pihole
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
# Otherwise, show an error and exit
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
printf "\\t\\t%bError: Local repo %s not found, exiting installer%b\\n" "${COL_LIGHT_RED}" "${PI_HOLE_LOCAL_REPO}" "${COL_NC}"
return 1
fi
}
# Install the configs from PI_HOLE_LOCAL_REPO to their various locations
installConfigs() {
printf "\\n %b Installing configs from %s...\\n" "${INFO}" "${PI_HOLE_LOCAL_REPO}"
# Make sure Pi-hole's config files are in place
version_check_dnsmasq
# Install list of DNS servers
# Format: Name;Primary IPv4;Secondary IPv4;Primary IPv6;Secondary IPv6
# Some values may be empty (for example: DNS servers without IPv6 support)
echo "${DNS_SERVERS}" > "${PI_HOLE_CONFIG_DIR}/dns-servers.conf"
chmod 644 "${PI_HOLE_CONFIG_DIR}/dns-servers.conf"
# Install template file if it does not exist
if [[ ! -r "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" ]]; then
install -d -m 0755 ${PI_HOLE_CONFIG_DIR}
if ! install -T -o pihole -m 664 "${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole-FTL.conf" "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" &>/dev/null; then
printf " %b Error: Unable to initialize configuration file %s/pihole-FTL.conf\\n" "${COL_LIGHT_RED}" "${PI_HOLE_CONFIG_DIR}"
return 1
fi
fi
# Install empty custom.list file if it does not exist
if [[ ! -r "${PI_HOLE_CONFIG_DIR}/custom.list" ]]; then
if ! install -o root -m 644 /dev/null "${PI_HOLE_CONFIG_DIR}/custom.list" &>/dev/null; then
printf " %b Error: Unable to initialize configuration file %s/custom.list\\n" "${COL_LIGHT_RED}" "${PI_HOLE_CONFIG_DIR}"
return 1
fi
fi
# Install pihole-FTL.service
install -T -m 0755 "${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole-FTL.service" "/etc/init.d/pihole-FTL"
# If the user chose to install the dashboard,
if [[ "${INSTALL_WEB_SERVER}" == true ]]; then
# and if the Web server conf directory does not exist,
if [[ ! -d "/etc/lighttpd" ]]; then
# make it and set the owners
install -d -m 755 -o "${USER}" -g root /etc/lighttpd
# Otherwise, if the config file already exists
elif [[ -f "${lighttpdConfig}" ]]; then
# back up the original
mv "${lighttpdConfig}"{,.orig}
fi
# and copy in the config file Pi-hole needs
install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/advanced/${LIGHTTPD_CFG} "${lighttpdConfig}"
# Make sure the external.conf file exists, as lighttpd v1.4.50 crashes without it
if [ ! -f /etc/lighttpd/external.conf ]; then
install -m 644 /dev/null /etc/lighttpd/external.conf
fi
# If there is a custom block page in the html/pihole directory, replace 404 handler in lighttpd config
if [[ -f "${PI_HOLE_BLOCKPAGE_DIR}/custom.php" ]]; then
sed -i 's/^\(server\.error-handler-404\s*=\s*\).*$/\1"\/pihole\/custom\.php"/' "${lighttpdConfig}"
fi
# Make the directories if they do not exist and set the owners
mkdir -p /run/lighttpd
chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /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
fi
}
install_manpage() {
# Copy Pi-hole man pages and call mandb to update man page database
# Default location for man files for /usr/local/bin is /usr/local/share/man
# on lightweight systems may not be present, so check before copying.
printf " %b Testing man page installation" "${INFO}"
if ! is_command mandb ; then
# if mandb is not present, no manpage support
printf "%b %b man not installed\\n" "${OVER}" "${INFO}"
return
elif [[ ! -d "/usr/local/share/man" ]]; then
# appropriate directory for Pi-hole's man page is not present
printf "%b %b man pages not installed\\n" "${OVER}" "${INFO}"
return
fi
if [[ ! -d "/usr/local/share/man/man8" ]]; then
# if not present, create man8 directory
install -d -m 755 /usr/local/share/man/man8
fi
if [[ ! -d "/usr/local/share/man/man5" ]]; then
# if not present, create man5 directory
install -d -m 755 /usr/local/share/man/man5
fi
# Testing complete, copy the files & update the man db
install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/manpages/pihole.8 /usr/local/share/man/man8/pihole.8
install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/manpages/pihole-FTL.8 /usr/local/share/man/man8/pihole-FTL.8
# remove previously installed "pihole-FTL.conf.5" man page
if [[ -f "/usr/local/share/man/man5/pihole-FTL.conf.5" ]]; then
rm /usr/local/share/man/man5/pihole-FTL.conf.5
fi
if mandb -q &>/dev/null; then
# Updated successfully
printf "%b %b man pages installed and database updated\\n" "${OVER}" "${TICK}"
return
else
# Something is wrong with the system's man installation, clean up
# our files, (leave everything how we found it).
rm /usr/local/share/man/man8/pihole.8 /usr/local/share/man/man8/pihole-FTL.8
printf "%b %b man page db not updated, man pages not installed\\n" "${OVER}" "${CROSS}"
fi
}
stop_service() {
# Stop service passed in as argument.
# Can softfail, as process may not be installed when this is called
local str="Stopping ${1} service"
printf " %b %s..." "${INFO}" "${str}"
if is_command systemctl ; then
systemctl stop "${1}" &> /dev/null || true
else
service "${1}" stop &> /dev/null || true
fi
printf "%b %b %s...\\n" "${OVER}" "${TICK}" "${str}"
}
# Start/Restart service passed in as argument
restart_service() {
# Local, named variables
local str="Restarting ${1} service"
printf " %b %s..." "${INFO}" "${str}"
# If systemctl exists,
if is_command systemctl ; then
# use that to restart the service
systemctl restart "${1}" &> /dev/null
else
# Otherwise, fall back to the service command
service "${1}" restart &> /dev/null
fi
printf "%b %b %s...\\n" "${OVER}" "${TICK}" "${str}"
}
# Enable service so that it will start with next reboot
enable_service() {
# Local, named variables
local str="Enabling ${1} service to start on reboot"
printf " %b %s..." "${INFO}" "${str}"
# If systemctl exists,
if is_command systemctl ; then
# use that to enable the service
systemctl enable "${1}" &> /dev/null
else
# Otherwise, use update-rc.d to accomplish this
update-rc.d "${1}" defaults &> /dev/null
fi
printf "%b %b %s...\\n" "${OVER}" "${TICK}" "${str}"
}
# Disable service so that it will not with next reboot
disable_service() {
# Local, named variables
local str="Disabling ${1} service"
printf " %b %s..." "${INFO}" "${str}"
# If systemctl exists,
if is_command systemctl ; then
# use that to disable the service
systemctl disable "${1}" &> /dev/null
else
# Otherwise, use update-rc.d to accomplish this
update-rc.d "${1}" disable &> /dev/null
fi
printf "%b %b %s...\\n" "${OVER}" "${TICK}" "${str}"
}
check_service_active() {
# If systemctl exists,
if is_command systemctl ; then
# use that to check the status of the service
systemctl is-enabled "${1}" &> /dev/null
else
# Otherwise, fall back to service command
service "${1}" status &> /dev/null
fi
}
# Systemd-resolved's DNSStubListener and dnsmasq can't share port 53.
disable_resolved_stublistener() {
printf " %b Testing if systemd-resolved is enabled\\n" "${INFO}"
# Check if Systemd-resolved's DNSStubListener is enabled and active on port 53
if check_service_active "systemd-resolved"; then
# Check if DNSStubListener is enabled
printf " %b %b Testing if systemd-resolved DNSStub-Listener is active" "${OVER}" "${INFO}"
if ( grep -E '#?DNSStubListener=yes' /etc/systemd/resolved.conf &> /dev/null ); then
# Disable the DNSStubListener to unbind it from port 53
# Note that this breaks dns functionality on host until dnsmasq/ftl are up and running
printf "%b %b Disabling systemd-resolved DNSStubListener" "${OVER}" "${TICK}"
# Make a backup of the original /etc/systemd/resolved.conf
# (This will need to be restored on uninstallation)
sed -r -i.orig 's/#?DNSStubListener=yes/DNSStubListener=no/g' /etc/systemd/resolved.conf
printf " and restarting systemd-resolved\\n"
systemctl reload-or-restart systemd-resolved
else
printf "%b %b Systemd-resolved does not need to be restarted\\n" "${OVER}" "${INFO}"
fi
else
printf "%b %b Systemd-resolved is not enabled\\n" "${OVER}" "${INFO}"
fi
}
update_package_cache() {
# Update package cache on apt based OSes. Do this every time since
# it's quick and packages can be updated at any time.
# Local, named variables
local str="Update local cache of available packages"
printf " %b %s..." "${INFO}" "${str}"
# Create a command from the package cache variable
if eval "${UPDATE_PKG_CACHE}" &> /dev/null; then
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
# Otherwise, show an error and exit
# In case we used apt-get and apt is also available, we use this as recommendation as we have seen it
# gives more user-friendly (interactive) advice
if [[ ${PKG_MANAGER} == "apt-get" ]] && is_command apt ; then
UPDATE_PKG_CACHE="apt update"
fi
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
printf " %b Error: Unable to update package cache. Please try \"%s\"%b\\n" "${COL_LIGHT_RED}" "sudo ${UPDATE_PKG_CACHE}" "${COL_NC}"
return 1
fi
}
# Let user know if they have outdated packages on their system and
# advise them to run a package update at soonest possible.
notify_package_updates_available() {
# Local, named variables
local str="Checking ${PKG_MANAGER} for upgraded packages"
printf "\\n %b %s..." "${INFO}" "${str}"
# Store the list of packages in a variable
updatesToInstall=$(eval "${PKG_COUNT}")
if [[ -d "/lib/modules/$(uname -r)" ]]; then
if [[ "${updatesToInstall}" -eq 0 ]]; then
printf "%b %b %s... up to date!\\n\\n" "${OVER}" "${TICK}" "${str}"
else
printf "%b %b %s... %s updates available\\n" "${OVER}" "${TICK}" "${str}" "${updatesToInstall}"
printf " %b %bIt is recommended to update your OS after installing the Pi-hole!%b\\n\\n" "${INFO}" "${COL_LIGHT_GREEN}" "${COL_NC}"
fi
else
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
printf " Kernel update detected. If the install fails, please reboot and try again\\n"
fi
}
install_dependent_packages() {
# Install packages passed in via argument array
# No spinner - conflicts with set -e
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 is_command apt-get ; then
# For each package, check if it's already installed (and if so, don't add it to the installArray)
for i in "$@"; do
printf " %b Checking for %s..." "${INFO}" "${i}"
if dpkg-query -W -f='${Status}' "${i}" 2>/dev/null | grep "ok installed" &> /dev/null; then
printf "%b %b Checking for %s\\n" "${OVER}" "${TICK}" "${i}"
else
printf "%b %b Checking for %s (will be installed)\\n" "${OVER}" "${INFO}" "${i}"
installArray+=("${i}")
fi
done
# If there's anything to install, install everything in the list.
if [[ "${#installArray[@]}" -gt 0 ]]; then
test_dpkg_lock
# Running apt-get install with minimal output can cause some issues with
# requiring user input (e.g password for phpmyadmin see #218)
printf " %b Processing %s install(s) for: %s, please wait...\\n" "${INFO}" "${PKG_MANAGER}" "${installArray[*]}"
printf '%*s\n' "$columns" '' | tr " " -;
"${PKG_INSTALL[@]}" "${installArray[@]}"
printf '%*s\n' "$columns" '' | tr " " -;
return
fi
printf "\\n"
return 0
fi
# Install Fedora/CentOS packages
for i in "$@"; do
# For each package, check if it's already installed (and if so, don't add it to the installArray)
printf " %b Checking for %s..." "${INFO}" "${i}"
if "${PKG_MANAGER}" -q list installed "${i}" &> /dev/null; then
printf "%b %b Checking for %s\\n" "${OVER}" "${TICK}" "${i}"
else
printf "%b %b Checking for %s (will be installed)\\n" "${OVER}" "${INFO}" "${i}"
installArray+=("${i}")
fi
done
# If there's anything to install, install everything in the list.
if [[ "${#installArray[@]}" -gt 0 ]]; then
printf " %b Processing %s install(s) for: %s, please wait...\\n" "${INFO}" "${PKG_MANAGER}" "${installArray[*]}"
printf '%*s\n' "$columns" '' | tr " " -;
"${PKG_INSTALL[@]}" "${installArray[@]}"
printf '%*s\n' "$columns" '' | tr " " -;
return
fi
printf "\\n"
return 0
}
# Install the Web interface dashboard
installPiholeWeb() {
printf "\\n %b Installing blocking page...\\n" "${INFO}"
local str="Creating directory for blocking page, and copying files"
printf " %b %s..." "${INFO}" "${str}"
# Install the directory,
install -d -m 0755 ${PI_HOLE_BLOCKPAGE_DIR}
# and the blockpage
install -D -m 644 ${PI_HOLE_LOCAL_REPO}/advanced/{index,blockingpage}.* ${PI_HOLE_BLOCKPAGE_DIR}/
# Remove superseded file
if [[ -e "${PI_HOLE_BLOCKPAGE_DIR}/index.js" ]]; then
rm "${PI_HOLE_BLOCKPAGE_DIR}/index.js"
fi
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
local str="Backing up index.lighttpd.html"
printf " %b %s..." "${INFO}" "${str}"
# If the default index file exists,
if [[ -f "${webroot}/index.lighttpd.html" ]]; then
# back it up
mv ${webroot}/index.lighttpd.html ${webroot}/index.lighttpd.orig
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
# Otherwise, don't do anything
printf "%b %b %s\\n" "${OVER}" "${INFO}" "${str}"
printf " No default index.lighttpd.html file found... not backing up\\n"
fi
# Install Sudoers file
local str="Installing sudoer file"
printf "\\n %b %s..." "${INFO}" "${str}"
# Make the .d directory if it doesn't exist,
install -d -m 755 /etc/sudoers.d/
# and copy in the pihole sudoers file
install -m 0640 ${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole.sudo /etc/sudoers.d/pihole
# Add lighttpd user (OS dependent) to sudoers file
echo "${LIGHTTPD_USER} ALL=NOPASSWD: ${PI_HOLE_BIN_DIR}/pihole" >> /etc/sudoers.d/pihole
# If the Web server user is lighttpd,
if [[ "$LIGHTTPD_USER" == "lighttpd" ]]; then
# Allow executing pihole via sudo with Fedora
# Usually /usr/local/bin ${PI_HOLE_BIN_DIR} is not permitted as directory for sudoable programs
echo "Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin:${PI_HOLE_BIN_DIR}" >> /etc/sudoers.d/pihole
fi
# Set the strict permissions on the file
chmod 0440 /etc/sudoers.d/pihole
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
}
# Installs a cron file
installCron() {
# Install the cron job
local str="Installing latest Cron script"
printf "\\n %b %s..." "${INFO}" "${str}"
# Copy the cron file over from the local repo
# File must not be world or group writeable and must be owned by root
install -D -m 644 -T -o root -g root ${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole.cron /etc/cron.d/pihole
# Randomize gravity update time
sed -i "s/59 1 /$((1 + RANDOM % 58)) $((3 + RANDOM % 2))/" /etc/cron.d/pihole
# Randomize update checker time
sed -i "s/59 17/$((1 + RANDOM % 58)) $((12 + RANDOM % 8))/" /etc/cron.d/pihole
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
}
# Gravity is a very important script as it aggregates all of the domains into a single HOSTS formatted list,
# which is what Pi-hole needs to begin blocking ads
runGravity() {
# Run gravity in the current shell
{ /opt/pihole/gravity.sh --force; }
}
# Check if the pihole user exists and create if it does not
create_pihole_user() {
local str="Checking for user 'pihole'"
printf " %b %s..." "${INFO}" "${str}"
# If the pihole user exists,
if id -u pihole &> /dev/null; then
# and if the pihole group exists,
if getent group pihole > /dev/null 2>&1; then
# succeed
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
local str="Checking for group 'pihole'"
printf " %b %s..." "${INFO}" "${str}"
local str="Creating group 'pihole'"
# if group can be created
if groupadd pihole; then
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
local str="Adding user 'pihole' to group 'pihole'"
printf " %b %s..." "${INFO}" "${str}"
# if pihole user can be added to group pihole
if usermod -g pihole pihole; then
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
fi
else
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
fi
fi
else
# If the pihole user doesn't exist,
printf "%b %b %s" "${OVER}" "${CROSS}" "${str}"
local str="Creating user 'pihole'"
printf "%b %b %s..." "${OVER}" "${INFO}" "${str}"
# create her with the useradd command,
if getent group pihole > /dev/null 2>&1; then
# then add her to the pihole group (as it already exists)
if useradd -r --no-user-group -g pihole -s /usr/sbin/nologin pihole; then
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
fi
else
# add user pihole with default group settings
if useradd -r -s /usr/sbin/nologin pihole; then
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
else
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
fi
fi
fi
}
# This function saves any changes to the setup variables into the setupvars.conf file for future runs
finalExports() {
# If the setup variable file exists,
if [[ -e "${setupVars}" ]]; then
# update the variables in the file
sed -i.update.bak '/PIHOLE_INTERFACE/d;/PIHOLE_DNS_1\b/d;/PIHOLE_DNS_2\b/d;/QUERY_LOGGING/d;/INSTALL_WEB_SERVER/d;/INSTALL_WEB_INTERFACE/d;/LIGHTTPD_ENABLED/d;/CACHE_SIZE/d;/DNS_FQDN_REQUIRED/d;/DNS_BOGUS_PRIV/d;/DNSMASQ_LISTENING/d;' "${setupVars}"
fi
# echo the information to the user
{
echo "PIHOLE_INTERFACE=${PIHOLE_INTERFACE}"
echo "PIHOLE_DNS_1=${PIHOLE_DNS_1}"
echo "PIHOLE_DNS_2=${PIHOLE_DNS_2}"
echo "QUERY_LOGGING=${QUERY_LOGGING}"
echo "INSTALL_WEB_SERVER=${INSTALL_WEB_SERVER}"
echo "INSTALL_WEB_INTERFACE=${INSTALL_WEB_INTERFACE}"
echo "LIGHTTPD_ENABLED=${LIGHTTPD_ENABLED}"
echo "CACHE_SIZE=${CACHE_SIZE}"
echo "DNS_FQDN_REQUIRED=${DNS_FQDN_REQUIRED:-true}"
echo "DNS_BOGUS_PRIV=${DNS_BOGUS_PRIV:-true}"
echo "DNSMASQ_LISTENING=${DNSMASQ_LISTENING:-local}"
}>> "${setupVars}"
chmod 644 "${setupVars}"
# Set the privacy level
sed -i '/PRIVACYLEVEL/d' "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf"
echo "PRIVACYLEVEL=${PRIVACY_LEVEL}" >> "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf"
# Bring in the current settings and the functions to manipulate them
source "${setupVars}"
source "${PI_HOLE_LOCAL_REPO}/advanced/Scripts/webpage.sh"
# Look for DNS server settings which would have to be reapplied
ProcessDNSSettings
# Look for DHCP server settings which would have to be reapplied
ProcessDHCPSettings
}
# Install the logrotate script
installLogrotate() {
local str="Installing latest logrotate script"
local target=/etc/pihole/logrotate
printf "\\n %b %s..." "${INFO}" "${str}"
if [[ -f ${target} ]]; then
printf "\\n\\t%b Existing logrotate file found. No changes made.\\n" "${INFO}"
# Return value isn't that important, using 2 to indicate that it's not a fatal error but
# the function did not complete.
return 2
fi
# Copy the file over from the local repo
install -D -m 644 -T "${PI_HOLE_LOCAL_REPO}"/advanced/Templates/logrotate ${target}
# Different operating systems have different user / group
# settings for logrotate that makes it impossible to create
# a static logrotate file that will work with e.g.
# Rasbian and Ubuntu at the same time. Hence, we have to
# customize the logrotate script here in order to reflect
# the local properties of the /var/log directory
logusergroup="$(stat -c '%U %G' /var/log)"
# If there is a usergroup for log rotation,
if [[ -n "${logusergroup}" ]]; then
# replace the line in the logrotate script with that usergroup.
sed -i "s/# su #/su ${logusergroup}/g;" ${target}
fi
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
}
# Install base files and web interface
installPihole() {
# If the user wants to install the Web interface,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
if [[ ! -d "${webroot}" ]]; then
# make the Web directory if necessary
install -d -m 0755 ${webroot}
fi
if [[ "${INSTALL_WEB_SERVER}" == true ]]; then
# Set the owner and permissions
chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} ${webroot}
chmod 0775 ${webroot}
# Repair permissions if webroot is not world readable
chmod a+rx /var/www
chmod a+rx ${webroot}
# Give lighttpd access to the pihole group so the web interface can
# manage the gravity.db database
usermod -a -G pihole ${LIGHTTPD_USER}
# If the lighttpd command is executable,
if is_command lighty-enable-mod ; then
# enable fastcgi and fastcgi-php
lighty-enable-mod fastcgi fastcgi-php > /dev/null || true
else
# Otherwise, show info about installing them
printf " %b Warning: 'lighty-enable-mod' utility not found\\n" "${INFO}"
printf " Please ensure fastcgi is enabled if you experience issues\\n"
fi
fi
fi
# Install base files and web interface
if ! installScripts; then
printf " %b Failure in dependent script copy function.\\n" "${CROSS}"
exit 1
fi
# Install config files
if ! installConfigs; then
printf " %b Failure in dependent config copy function.\\n" "${CROSS}"
exit 1
fi
# If the user wants to install the dashboard,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# do so
installPiholeWeb
fi
# Install the cron file
installCron
# Install the logrotate file
installLogrotate || true
# Check if dnsmasq is present. If so, disable it and back up any possible
# config file
disable_dnsmasq
# install a man page entry for pihole
install_manpage
# Update setupvars.conf with any variables that may or may not have been changed during the install
finalExports
}
# SELinux
checkSelinux() {
local DEFAULT_SELINUX
local CURRENT_SELINUX
local SELINUX_ENFORCING=0
# Check for SELinux configuration file and getenforce command
if [[ -f /etc/selinux/config ]] && is_command getenforce; then
# Check the default SELinux mode
DEFAULT_SELINUX=$(awk -F= '/^SELINUX=/ {print $2}' /etc/selinux/config)
case "${DEFAULT_SELINUX,,}" in
enforcing)
printf " %b %bDefault SELinux: %s%b\\n" "${CROSS}" "${COL_RED}" "${DEFAULT_SELINUX}" "${COL_NC}"
SELINUX_ENFORCING=1
;;
*) # 'permissive' and 'disabled'
printf " %b %bDefault SELinux: %s%b\\n" "${TICK}" "${COL_GREEN}" "${DEFAULT_SELINUX}" "${COL_NC}"
;;
esac
# Check the current state of SELinux
CURRENT_SELINUX=$(getenforce)
case "${CURRENT_SELINUX,,}" in
enforcing)
printf " %b %bCurrent SELinux: %s%b\\n" "${CROSS}" "${COL_RED}" "${CURRENT_SELINUX}" "${COL_NC}"
SELINUX_ENFORCING=1
;;
*) # 'permissive' and 'disabled'
printf " %b %bCurrent SELinux: %s%b\\n" "${TICK}" "${COL_GREEN}" "${CURRENT_SELINUX}" "${COL_NC}"
;;
esac
else
echo -e " ${INFO} ${COL_GREEN}SELinux not detected${COL_NC}";
fi
# Exit the installer if any SELinux checks toggled the flag
if [[ "${SELINUX_ENFORCING}" -eq 1 ]] && [[ -z "${PIHOLE_SELINUX}" ]]; then
printf " Pi-hole does not provide an SELinux policy as the required changes modify the security of your system.\\n"
printf " Please refer to https://wiki.centos.org/HowTos/SELinux if SELinux is required for your deployment.\\n"
printf " This check can be skipped by setting the environment variable %bPIHOLE_SELINUX%b to %btrue%b\\n" "${COL_LIGHT_RED}" "${COL_NC}" "${COL_LIGHT_RED}" "${COL_NC}"
printf " e.g: export PIHOLE_SELINUX=true\\n"
printf " By setting this variable to true you acknowledge there may be issues with Pi-hole during or after the install\\n"
printf "\\n %bSELinux Enforcing detected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}";
exit 1;
elif [[ "${SELINUX_ENFORCING}" -eq 1 ]] && [[ -n "${PIHOLE_SELINUX}" ]]; then
printf " %b %bSELinux Enforcing detected%b. PIHOLE_SELINUX env variable set - installer will continue\\n" "${INFO}" "${COL_LIGHT_RED}" "${COL_NC}"
fi
}
# Installation complete message with instructions for the user
displayFinalMessage() {
# If the number of arguments is > 0,
if [[ "${#1}" -gt 0 ]] ; then
# set the password to the first argument.
pwstring="$1"
elif [[ $(grep 'WEBPASSWORD' -c "${setupVars}") -gt 0 ]]; then
# Else if the password exists from previous setup, we'll load it later
pwstring="unchanged"
else
# Else, inform the user that there is no set password.
pwstring="NOT SET"
fi
# If the user wants to install the dashboard,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# Store a message in a variable and display it
additional="View the web interface at http://pi.hole/admin or http://${IPV4_ADDRESS%/*}/admin\\n\\nYour Admin Webpage login password is ${pwstring}"
fi
# Final completion message to user
dialog --no-shadow --keep-tite \
--title "Installation Complete!" \
--msgbox "Configure your devices to use the Pi-hole as their DNS server using:\
\\n\\nIPv4: ${IPV4_ADDRESS%/*}\
\\nIPv6: ${IPV6_ADDRESS:-"Not Configured"}\
\\nIf you have not done so already, the above IP should be set to static.\
\\n${additional}" "${r}" "${c}"
}
update_dialogs() {
# If pihole -r "reconfigure" option was selected,
if [[ "${reconfigure}" = true ]]; then
# set some variables that will be used
opt1a="Repair"
opt1b="This will retain existing settings"
strAdd="You will remain on the same version"
else
# Otherwise, set some variables with different values
opt1a="Update"
opt1b="This will retain existing settings."
strAdd="You will be updated to the latest version."
fi
opt2a="Reconfigure"
opt2b="Resets Pi-hole and allows re-selecting settings."
# Display the information to the user
UpdateCmd=$(dialog --no-shadow --keep-tite --output-fd 1 \
--cancel-label Exit \
--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}" "${opt2b}" || true)
result=$?
case ${result} in
"${DIALOG_CANCEL}" | "${DIALOG_ESC}")
printf " %b Cancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"
exit 1
;;
esac
# Set the variable based on if the user chooses
case ${UpdateCmd} in
# repair, or
"${opt1a}")
printf " %b %s option selected\\n" "${INFO}" "${opt1a}"
useUpdateVars=true
;;
# reconfigure,
"${opt2a}")
printf " %b %s option selected\\n" "${INFO}" "${opt2a}"
useUpdateVars=false
;;
esac
}
check_download_exists() {
status=$(curl --head --silent "https://ftl.pi-hole.net/${1}" | head -n 1)
if grep -q "404" <<< "$status"; then
return 1
else
return 0
fi
}
fully_fetch_repo() {
# Add upstream branches to shallow clone
local directory="${1}"
cd "${directory}" || return 1
if is_repo "${directory}"; then
git remote set-branches origin '*' || return 1
git fetch --quiet || return 1
else
return 1
fi
return 0
}
get_available_branches() {
# Return available branches
local directory
directory="${1}"
local output
cd "${directory}" || return 1
# Get reachable remote branches, but store STDERR as STDOUT variable
output=$( { git ls-remote --heads --quiet | cut -d'/' -f3- -; } 2>&1 )
# echo status for calling function to capture
echo "$output"
return
}
fetch_checkout_pull_branch() {
# Check out specified branch
local directory
directory="${1}"
local branch
branch="${2}"
# Set the reference for the requested branch, fetch, check it put and pull it
cd "${directory}" || return 1
git remote set-branches origin "${branch}" || return 1
git stash --all --quiet &> /dev/null || true
git clean --quiet --force -d || true
git fetch --quiet || return 1
checkout_pull_branch "${directory}" "${branch}" || return 1
}
checkout_pull_branch() {
# Check out specified branch
local directory
directory="${1}"
local branch
branch="${2}"
local oldbranch
cd "${directory}" || return 1
oldbranch="$(git symbolic-ref HEAD)"
str="Switching to branch: '${branch}' from '${oldbranch}'"
printf " %b %s" "${INFO}" "$str"
git checkout "${branch}" --quiet || return 1
printf "%b %b %s\\n" "${OVER}" "${TICK}" "$str"
# Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
chmod -R a+rX "${directory}"
git_pull=$(git pull --no-rebase || return 1)
if [[ "$git_pull" == *"up-to-date"* ]]; then
printf " %b %s\\n" "${INFO}" "${git_pull}"
else
printf "%s\\n" "$git_pull"
fi
return 0
}
clone_or_update_repos() {
# If the user wants to reconfigure,
if [[ "${reconfigure}" == true ]]; then
printf " %b Performing reconfiguration, skipping download of local repos\\n" "${INFO}"
# Reset the Core repo
resetRepo ${PI_HOLE_LOCAL_REPO} || \
{ printf " %b Unable to reset %s, exiting installer%b\\n" "${COL_LIGHT_RED}" "${PI_HOLE_LOCAL_REPO}" "${COL_NC}"; \
exit 1; \
}
# If the Web interface was installed,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# reset it's repo
resetRepo ${webInterfaceDir} || \
{ printf " %b Unable to reset %s, exiting installer%b\\n" "${COL_LIGHT_RED}" "${webInterfaceDir}" "${COL_NC}"; \
exit 1; \
}
fi
# Otherwise, a repair is happening
else
# so get git files for Core
getGitFiles ${PI_HOLE_LOCAL_REPO} ${piholeGitUrl} || \
{ printf " %b Unable to clone %s into %s, unable to continue%b\\n" "${COL_LIGHT_RED}" "${piholeGitUrl}" "${PI_HOLE_LOCAL_REPO}" "${COL_NC}"; \
exit 1; \
}
# If the Web interface was installed,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# get the Web git files
getGitFiles ${webInterfaceDir} ${webInterfaceGitUrl} || \
{ printf " %b Unable to clone %s into ${webInterfaceDir}, exiting installer%b\\n" "${COL_LIGHT_RED}" "${webInterfaceGitUrl}" "${COL_NC}"; \
exit 1; \
}
fi
fi
}
# Download FTL binary to random temp directory and install FTL binary
# Disable directive for SC2120 a value _can_ be passed to this function, but it is passed from an external script that sources this one
# shellcheck disable=SC2120
FTLinstall() {
# Local, named variables
local str="Downloading and Installing FTL"
printf " %b %s..." "${INFO}" "${str}"
# Move into the temp ftl directory
pushd "$(mktemp -d)" > /dev/null || { printf "Unable to make temporary directory for FTL binary download\\n"; return 1; }
local ftlBranch
local url
if [[ -f "/etc/pihole/ftlbranch" ]];then
ftlBranch=$(</etc/pihole/ftlbranch)
else
ftlBranch="master"
fi
local binary
binary="${1}"
# Determine which version of FTL to download
if [[ "${ftlBranch}" == "master" ]];then
url="https://github.com/pi-hole/ftl/releases/latest/download"
else
url="https://ftl.pi-hole.net/${ftlBranch}"
fi
if curl -sSL --fail "${url}/${binary}" -o "${binary}"; then
# If the download worked, get sha1 of the binary we just downloaded for verification.
curl -sSL --fail "${url}/${binary}.sha1" -o "${binary}.sha1"
# If we downloaded binary file (as opposed to text),
if sha1sum --status --quiet -c "${binary}".sha1; then
printf "transferred... "
# Before stopping FTL, we download the macvendor database
curl -sSL "https://ftl.pi-hole.net/macvendor.db" -o "${PI_HOLE_CONFIG_DIR}/macvendor.db" || true
# Stop pihole-FTL service if available
stop_service pihole-FTL &> /dev/null
# Install the new version with the correct permissions
install -T -m 0755 "${binary}" /usr/bin/pihole-FTL
# Move back into the original directory the user was in
popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
# Installed the FTL service
printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}"
return 0
else
# Otherwise, the hash download failed, so print and exit.
popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
printf " %b Error: Download of %s/%s failed (checksum error)%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}"
return 1
fi
else
# Otherwise, the download failed, so print and exit.
popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}"
# The URL could not be found
printf " %b Error: URL %s/%s not found%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}"
return 1
fi
}
disable_dnsmasq() {
# dnsmasq can now be stopped and disabled if it exists
if is_command dnsmasq; then
if check_service_active "dnsmasq";then
printf " %b FTL can now resolve DNS Queries without dnsmasq running separately\\n" "${INFO}"
stop_service dnsmasq
disable_service dnsmasq
fi
fi
# Backup existing /etc/dnsmasq.conf if present and ensure that
# /etc/dnsmasq.conf contains only "conf-dir=/etc/dnsmasq.d"
local conffile="/etc/dnsmasq.conf"
if [[ -f "${conffile}" ]]; then
printf " %b Backing up %s to %s.old\\n" "${INFO}" "${conffile}" "${conffile}"
mv "${conffile}" "${conffile}.old"
fi
# Create /etc/dnsmasq.conf
echo "conf-dir=/etc/dnsmasq.d" > "${conffile}"
chmod 644 "${conffile}"
}
get_binary_name() {
# This gives the machine architecture which may be different from the OS architecture...
local machine
machine=$(uname -m)
local l_binary
local str="Detecting processor"
printf " %b %s..." "${INFO}" "${str}"
# If the machine is arm or aarch
if [[ "${machine}" == "arm"* || "${machine}" == *"aarch"* ]]; then
# ARM
local rev
rev=$(uname -m | sed "s/[^0-9]//g;")
local lib
lib=$(ldd "$(which sh)" | grep -E '^\s*/lib' | awk '{ print $1 }')
if [[ "${lib}" == "/lib/ld-linux-aarch64.so.1" ]]; then
printf "%b %b Detected AArch64 (64 Bit ARM) processor\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-aarch64-linux-gnu"
elif [[ "${lib}" == "/lib/ld-linux-armhf.so.3" ]]; then
# Hard-float available: Use gnueabihf binaries
# If ARMv8 or higher is found (e.g., BCM2837 as found in Raspberry Pi Model 3B)
if [[ "${rev}" -gt 7 ]]; then
printf "%b %b Detected ARMv8 (or newer) processor\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-armv8-linux-gnueabihf"
elif [[ "${rev}" -eq 7 ]]; then
# Otherwise, if ARMv7 is found (e.g., BCM2836 as found in Raspberry Pi Model 2)
printf "%b %b Detected ARMv7 processor (with hard-float support)\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-armv7-linux-gnueabihf"
else
# Otherwise, use the ARMv6 binary (e.g., BCM2835 as found in Raspberry Pi Zero and Model 1)
printf "%b %b Detected ARMv6 processor (with hard-float support)\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-armv6-linux-gnueabihf"
fi
else
# No hard-float support found: Use gnueabi binaries
# Use the ARMv4-compliant binary only if we detected an ARMv4T core
if [[ "${rev}" -eq 4 ]]; then
printf "%b %b Detected ARMv4 processor\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-armv4-linux-gnueabi"
# Otherwise, use the ARMv5 binary. To date (end of 2020), all modern ARM processors
# are backwards-compatible to the ARMv5
else
printf "%b %b Detected ARMv5 (or newer) processor\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-armv5-linux-gnueabi"
fi
fi
elif [[ "${machine}" == "x86_64" ]]; then
# This gives the processor of packages dpkg installs (for example, "i386")
local dpkgarch
dpkgarch=$(dpkg --print-processor 2> /dev/null || dpkg --print-architecture 2> /dev/null)
# Special case: This is a 32 bit OS, installed on a 64 bit machine
# -> change machine processor to download the 32 bit executable
# We only check this for Debian-based systems as this has been an issue
# in the past (see https://github.com/pi-hole/pi-hole/pull/2004)
if [[ "${dpkgarch}" == "i386" ]]; then
printf "%b %b Detected 32bit (i686) processor\\n" "${OVER}" "${TICK}"
l_binary="pihole-FTL-linux-x86_32"
else
# 64bit
printf "%b %b Detected x86_64 processor\\n" "${OVER}" "${TICK}"
# set the binary to be used
l_binary="pihole-FTL-linux-x86_64"
fi
else
# Something else - we try to use 32bit executable and warn the user
if [[ ! "${machine}" == "i686" ]]; then
printf "%b %b %s...\\n" "${OVER}" "${CROSS}" "${str}"
printf " %b %bNot able to detect processor (unknown: %s), trying x86 (32bit) executable%b\\n" "${INFO}" "${COL_LIGHT_RED}" "${machine}" "${COL_NC}"
printf " %b Contact Pi-hole Support if you experience issues (e.g: FTL not running)\\n" "${INFO}"
else
printf "%b %b Detected 32bit (i686) processor\\n" "${OVER}" "${TICK}"
fi
l_binary="pihole-FTL-linux-x86_32"
fi
# Returning a string value via echo
echo ${l_binary}
}
FTLcheckUpdate() {
#In the next section we check to see if FTL is already installed (in case of pihole -r).
#If the installed version matches the latest version, then check the installed sha1sum of the binary vs the remote sha1sum. If they do not match, then download
printf " %b Checking for existing FTL binary...\\n" "${INFO}"
local ftlLoc
ftlLoc=$(command -v pihole-FTL 2>/dev/null)
local ftlBranch
if [[ -f "/etc/pihole/ftlbranch" ]];then
ftlBranch=$(</etc/pihole/ftlbranch)
else
ftlBranch="master"
fi
local binary
binary="${1}"
local remoteSha1
local localSha1
# if dnsmasq exists and is running at this point, force reinstall of FTL Binary
if is_command dnsmasq; then
if check_service_active "dnsmasq";then
return 0
fi
fi
if [[ ! "${ftlBranch}" == "master" ]]; then
#Check whether or not the binary for this FTL branch actually exists. If not, then there is no update!
local path
path="${ftlBranch}/${binary}"
# shellcheck disable=SC1090
if ! check_download_exists "$path"; then
printf " %b Branch \"%s\" is not available.\\n" "${INFO}" "${ftlBranch}"
printf " %b Use %bpihole checkout ftl [branchname]%b to switch to a valid branch.\\n" "${INFO}" "${COL_LIGHT_GREEN}" "${COL_NC}"
return 2
fi
if [[ ${ftlLoc} ]]; then
# We already have a pihole-FTL binary downloaded.
# Alt branches don't have a tagged version against them, so just confirm the checksum of the local vs remote to decide whether we download or not
remoteSha1=$(curl -sSL --fail "https://ftl.pi-hole.net/${ftlBranch}/${binary}.sha1" | cut -d ' ' -f 1)
localSha1=$(sha1sum "$(command -v pihole-FTL)" | cut -d ' ' -f 1)
if [[ "${remoteSha1}" != "${localSha1}" ]]; then
printf " %b Checksums do not match, downloading from ftl.pi-hole.net.\\n" "${INFO}"
return 0
else
printf " %b Checksum of installed binary matches remote. No need to download!\\n" "${INFO}"
return 1
fi
else
return 0
fi
else
if [[ ${ftlLoc} ]]; then
local FTLversion
FTLversion=$(/usr/bin/pihole-FTL tag)
local FTLlatesttag
if ! FTLlatesttag=$(curl -sI https://github.com/pi-hole/FTL/releases/latest | grep --color=never -i Location: | awk -F / '{print $NF}' | tr -d '[:cntrl:]'); then
# There was an issue while retrieving the latest version
printf " %b Failed to retrieve latest FTL release metadata" "${CROSS}"
return 3
fi
if [[ "${FTLversion}" != "${FTLlatesttag}" ]]; then
return 0
else
printf " %b Latest FTL Binary already installed (%s). Confirming Checksum...\\n" "${INFO}" "${FTLlatesttag}"
remoteSha1=$(curl -sSL --fail "https://github.com/pi-hole/FTL/releases/download/${FTLversion%$'\r'}/${binary}.sha1" | cut -d ' ' -f 1)
localSha1=$(sha1sum "$(command -v pihole-FTL)" | cut -d ' ' -f 1)
if [[ "${remoteSha1}" != "${localSha1}" ]]; then
printf " %b Corruption detected...\\n" "${INFO}"
return 0
else
printf " %b Checksum correct. No need to download!\\n" "${INFO}"
return 1
fi
fi
else
return 0
fi
fi
}
# Detect suitable FTL binary platform
FTLdetect() {
printf "\\n %b FTL Checks...\\n\\n" "${INFO}"
printf " %b" "${2}"
if FTLcheckUpdate "${1}"; then
FTLinstall "${1}" || return 1
fi
}
make_temporary_log() {
# Create a random temporary file for the log
TEMPLOG=$(mktemp /tmp/pihole_temp.XXXXXX)
# Open handle 3 for templog
# https://stackoverflow.com/questions/18460186/writing-outputs-to-log-file-and-console
exec 3>"$TEMPLOG"
# Delete templog, but allow for addressing via file handle
# This lets us write to the log without having a temporary file on the drive, which
# is meant to be a security measure so there is not a lingering file on the drive during the install process
rm "$TEMPLOG"
}
copy_to_install_log() {
# Copy the contents of file descriptor 3 into the install log
# Since we use color codes such as '\e[1;33m', they should be removed
sed 's/\[[0-9;]\{1,5\}m//g' < /proc/$$/fd/3 > "${installLogLoc}"
chmod 644 "${installLogLoc}"
}
main() {
######## FIRST CHECK ########
# Must be root to install
local str="Root user check"
printf "\\n"
# If the user's id is zero,
if [[ "${EUID}" -eq 0 ]]; then
# they are root and all is good
printf " %b %s\\n" "${TICK}" "${str}"
# Show the Pi-hole logo so people know it's genuine since the logo and name are trademarked
show_ascii_berry
make_temporary_log
else
# Otherwise, they do not have enough privileges, so let the user know
printf " %b %s\\n" "${INFO}" "${str}"
printf " %b %bScript called with non-root privileges%b\\n" "${INFO}" "${COL_LIGHT_RED}" "${COL_NC}"
printf " The Pi-hole requires elevated privileges to install and run\\n"
printf " Please check the installer for any concerns regarding this requirement\\n"
printf " Make sure to download this script from a trusted source\\n\\n"
printf " %b Sudo utility check" "${INFO}"
# If the sudo command exists, try rerunning as admin
if is_command sudo ; then
printf "%b %b Sudo utility check\\n" "${OVER}" "${TICK}"
# when run via curl piping
if [[ "$0" == "bash" ]]; then
# Download the install script and run it with admin rights
exec curl -sSL https://raw.githubusercontent.com/pi-hole/pi-hole/master/automated%20install/basic-install.sh | sudo bash "$@"
else
# when run via calling local bash script
exec sudo bash "$0" "$@"
fi
exit $?
else
# Otherwise, tell the user they need to run the script as root, and bail
printf "%b %b Sudo utility check\\n" "${OVER}" "${CROSS}"
printf " %b Sudo is needed for the Web Interface to run pihole commands\\n\\n" "${INFO}"
printf " %b %bPlease re-run this installer as root${COL_NC}\\n" "${INFO}" "${COL_LIGHT_RED}"
exit 1
fi
fi
# Check if SELinux is Enforcing and exit before doing anything else
checkSelinux
# Check for supported package managers so that we may install dependencies
package_manager_detect
# Notify user of package availability
notify_package_updates_available
# Install packages necessary to perform os_check
printf " %b Checking for / installing Required dependencies for OS Check...\\n" "${INFO}"
install_dependent_packages "${OS_CHECK_DEPS[@]}"
# Check that the installed OS is officially supported - display warning if not
os_check
# Install packages used by this installation script
printf " %b Checking for / installing Required dependencies for this install script...\\n" "${INFO}"
install_dependent_packages "${INSTALLER_DEPS[@]}"
#In case of RPM based distro, select the proper PHP version
if [[ "$PKG_MANAGER" == "yum" || "$PKG_MANAGER" == "dnf" ]] ; then
select_rpm_php
fi
# If the setup variable file exists,
if [[ -f "${setupVars}" ]]; then
# if it's running unattended,
if [[ "${runUnattended}" == true ]]; then
printf " %b Performing unattended setup, no dialogs will be displayed\\n" "${INFO}"
# Use the setup variables
useUpdateVars=true
# also disable debconf-apt-progress dialogs
export DEBIAN_FRONTEND="noninteractive"
else
# If running attended, show the available options (repair/reconfigure)
update_dialogs
fi
fi
if [[ "${useUpdateVars}" == false ]]; then
# Display welcome dialogs
welcomeDialogs
# Create directory for Pi-hole storage
install -d -m 755 /etc/pihole/
# Determine available interfaces
get_available_interfaces
# Find interfaces and let the user choose one
chooseInterface
# find IPv4 and IPv6 information of the device
collect_v4andv6_information
# Decide what upstream DNS Servers to use
setDNS
# Give the user a choice of blocklists to include in their install. Or not.
chooseBlocklists
# Let the user decide if they want the web interface to be installed automatically
setAdminFlag
# Let the user decide if they want query logging enabled...
setLogging
# Let the user decide the FTL privacy level
setPrivacyLevel
else
# Setup adlist file if not exists
installDefaultBlocklists
# Source ${setupVars} to use predefined user variables in the functions
source "${setupVars}"
# Get the privacy level if it exists (default is 0)
if [[ -f "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" ]]; then
PRIVACY_LEVEL=$(sed -ne 's/PRIVACYLEVEL=\(.*\)/\1/p' "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf")
# If no setting was found, default to 0
PRIVACY_LEVEL="${PRIVACY_LEVEL:-0}"
fi
fi
# Download or update the scripts by updating the appropriate git repos
clone_or_update_repos
# Install the Core dependencies
local dep_install_list=("${PIHOLE_DEPS[@]}")
if [[ "${INSTALL_WEB_SERVER}" == true ]]; then
# And, if the setting says so, install the Web admin interface dependencies
dep_install_list+=("${PIHOLE_WEB_DEPS[@]}")
fi
# Install packages used by the actual software
printf " %b Checking for / installing Required dependencies for Pi-hole software...\\n" "${INFO}"
install_dependent_packages "${dep_install_list[@]}"
unset dep_install_list
# On some systems, lighttpd is not enabled on first install. We need to enable it here if the user
# has chosen to install the web interface, else the LIGHTTPD_ENABLED check will fail
if [[ "${INSTALL_WEB_SERVER}" == true ]]; then
enable_service lighttpd
fi
# Determine if lighttpd is correctly enabled
if check_service_active "lighttpd"; then
LIGHTTPD_ENABLED=true
else
LIGHTTPD_ENABLED=false
fi
# Create the pihole user
create_pihole_user
# Check if FTL is installed - do this early on as FTL is a hard dependency for Pi-hole
local funcOutput
funcOutput=$(get_binary_name) #Store output of get_binary_name here
local binary
binary="pihole-FTL${funcOutput##*pihole-FTL}" #binary name will be the last line of the output of get_binary_name (it always begins with pihole-FTL)
local theRest
theRest="${funcOutput%pihole-FTL*}" # Print the rest of get_binary_name's output to display (cut out from first instance of "pihole-FTL")
if ! FTLdetect "${binary}" "${theRest}"; then
printf " %b FTL Engine not installed\\n" "${CROSS}"
exit 1
fi
# Install and log everything to a file
installPihole | tee -a /proc/$$/fd/3
# Copy the temp log file into final log location for storage
copy_to_install_log
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# Add password to web UI if there is none
pw=""
# If no password is set,
if [[ $(grep 'WEBPASSWORD' -c "${setupVars}") == 0 ]] ; then
# generate a random password
pw=$(tr -dc _A-Z-a-z-0-9 < /dev/urandom | head -c 8)
# shellcheck disable=SC1091
. /opt/pihole/webpage.sh
echo "WEBPASSWORD=$(HashPassword "${pw}")" >> "${setupVars}"
fi
fi
# Check for and disable systemd-resolved-DNSStubListener before reloading resolved
# DNSStubListener needs to remain in place for installer to download needed files,
# so this change needs to be made after installation is complete,
# but before starting or resarting the dnsmasq or ftl services
disable_resolved_stublistener
# If the Web server was installed,
if [[ "${INSTALL_WEB_SERVER}" == true ]]; then
if [[ "${LIGHTTPD_ENABLED}" == true ]]; then
restart_service lighttpd
enable_service lighttpd
else
printf " %b Lighttpd is disabled, skipping service restart\\n" "${INFO}"
fi
fi
printf " %b Restarting services...\\n" "${INFO}"
# Start services
# Enable FTL
# Ensure the service is enabled before trying to start it
# Fixes a problem reported on Ubuntu 18.04 where trying to start
# the service before enabling causes installer to exit
enable_service pihole-FTL
# If this is an update from a previous Pi-hole installation
# we need to move any existing `pihole*` logs from `/var/log` to `/var/log/pihole`
# if /var/log/pihole.log is not a symlink (set during FTL startup) move the files
# can be removed with Pi-hole v6.0
# To be sure FTL is not running when we move the files we explicitly stop it here
stop_service pihole-FTL &> /dev/null
# Special handling for pihole-FTL.log -> pihole/FTL.log
if [ -f /var/log/pihole-FTL.log ] && [ ! -L /var/log/pihole-FTL.log ]; then
# /var/log/pihole-FTL.log -> /var/log/pihole/FTL.log
# /var/log/pihole-FTL.log.1 -> /var/log/pihole/FTL.log.1
# /var/log/pihole-FTL.log.2.gz -> /var/log/pihole/FTL.log.2.gz
# /var/log/pihole-FTL.log.3.gz -> /var/log/pihole/FTL.log.3.gz
# /var/log/pihole-FTL.log.4.gz -> /var/log/pihole/FTL.log.4.gz
# /var/log/pihole-FTL.log.5.gz -> /var/log/pihole/FTL.log.5.gz
for f in /var/log/pihole-FTL.log*; do mv "$f" "$( sed "s/pihole-/pihole\//" <<< "$f")"; done
fi
# Remaining log files
if [ -f /var/log/pihole.log ] && [ ! -L /var/log/pihole.log ]; then
mv /var/log/pihole*.* /var/log/pihole/ 2>/dev/null
fi
restart_service pihole-FTL
# Download and compile the aggregated block list
runGravity
# Force an update of the updatechecker
/opt/pihole/updatecheck.sh
/opt/pihole/updatecheck.sh x remote
if [[ "${useUpdateVars}" == false ]]; then
displayFinalMessage "${pw}"
fi
# If the Web interface was installed,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
# If there is a password,
if (( ${#pw} > 0 )) ; then
# display the password
printf " %b Web Interface password: %b%s%b\\n" "${INFO}" "${COL_LIGHT_GREEN}" "${pw}" "${COL_NC}"
printf " %b This can be changed using 'pihole -a -p'\\n\\n" "${INFO}"
fi
fi
if [[ "${useUpdateVars}" == false ]]; then
# If the Web interface was installed,
if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
printf " %b View the web interface at http://pi.hole/admin or http://%s/admin\\n\\n" "${INFO}" "${IPV4_ADDRESS%/*}"
fi
# Explain to the user how to use Pi-hole as their DNS server
printf " %b You may now configure your devices to use the Pi-hole as their DNS server\\n" "${INFO}"
[[ -n "${IPV4_ADDRESS%/*}" ]] && printf " %b Pi-hole DNS (IPv4): %s\\n" "${INFO}" "${IPV4_ADDRESS%/*}"
[[ -n "${IPV6_ADDRESS}" ]] && printf " %b Pi-hole DNS (IPv6): %s\\n" "${INFO}" "${IPV6_ADDRESS}"
printf " %b If you have not done so already, the above IP should be set to static.\\n" "${INFO}"
INSTALL_TYPE="Installation"
else
INSTALL_TYPE="Update"
fi
# Display where the log file is
printf "\\n %b The install log is located at: %s\\n" "${INFO}" "${installLogLoc}"
printf "%b%s Complete! %b\\n" "${COL_LIGHT_GREEN}" "${INSTALL_TYPE}" "${COL_NC}"
if [[ "${INSTALL_TYPE}" == "Update" ]]; then
printf "\\n"
"${PI_HOLE_BIN_DIR}"/pihole version --current
fi
}
if [[ "${PH_TEST}" != true ]] ; then
main "$@"
fi
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