#!/usr/bin/env bash # shellcheck disable=SC1090 # Pi-hole: A black hole for Internet advertisements # (c) 2017-2018 Pi-hole, LLC (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 # List of supported DNS servers DNS_SERVERS=$(cat << EOM Google (ECS);8.8.8.8;8.8.4.4;2001:4860:4860:0:0:0:0:8888;2001:4860:4860:0:0:0:0:8844 OpenDNS (ECS, DNSSEC);208.67.222.222;208.67.220.220;2620:119:35::35;2620:119:53::53 Level3;4.2.2.1;4.2.2.2;; Comodo;8.26.56.26;8.20.247.20;; DNS.WATCH;84.200.69.80;84.200.70.40;2001:1608:10:25:0:0:1c04:b12f;2001:1608:10:25:0:0:9249:d69b Quad9 (filtered, DNSSEC);9.9.9.9;149.112.112.112;2620:fe::fe;2620:fe::9 Quad9 (unfiltered, no DNSSEC);9.9.9.10;149.112.112.10;2620:fe::10;2620:fe::fe:10 Quad9 (filtered + ECS);9.9.9.11;149.112.112.11;2620:fe::11;2620:fe::fe:11 Cloudflare;1.1.1.1;1.0.0.1;2606:4700:4700::1111;2606:4700:4700::1001 EOM ) # Location for final installation log storage installLogLoc=/etc/pihole/install.log # This is an important file as it contains information specific to the machine it's being installed on setupVars=/etc/pihole/setupVars.conf # Pi-hole uses lighttpd as a Web server, and this is the config file for it # shellcheck disable=SC2034 lighttpdConfig=/etc/lighttpd/lighttpd.conf # This is a file used for the colorized output coltable=/opt/pihole/COL_TABLE # Root of the web server webroot="/var/www/html" # We clone (or update) two git repositories during the install. This helps to make sure that we always have the latest versions of the relevant files. # AdminLTE is used to set up the Web admin interface. # Pi-hole contains various setup scripts and files which are critical to the installation. # Search for "PI_HOLE_LOCAL_REPO" in this file to see all such scripts. # Two notable scripts are gravity.sh (used to generate the HOSTS file) and advanced/Scripts/webpage.sh (used to install the Web admin interface) webInterfaceGitUrl="https://github.com/pi-hole/AdminLTE.git" webInterfaceDir="${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 # Check if we are running on a real terminal and find the rows and columns # If there is no real terminal, we will default to 80x24 if [ -t 0 ] ; then screen_size=$(stty size) else screen_size="24 80" fi # Determine terminal rows and columns by parsing screen_size printf -v rows '%d' "${screen_size%% *}" printf -v columns '%d' "${screen_size##* }" # Divide by two so the dialogs take up half of the screen, which looks nice. r=$(( rows / 2 )) c=$(( columns / 2 )) # Unless the screen is tiny r=$(( r < 20 ? 20 : r )) c=$(( c < 70 ? 70 : c )) ######## Undocumented Flags. Shhh ######## # These are undocumented flags; some of which we can use when repairing an installation # The runUnattended flag is one example of this reconfigure=false runUnattended=false INSTALL_WEB_SERVER=true # Check arguments for the undocumented flags for var in "$@"; 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 [ "$PIHOLE_SKIP_OS_CHECK" != true ]; then # This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net # and determines whether or not the script is running on one of those systems local remote_os_domain valid_os valid_version valid_response detected_os detected_version display_warning cmdResult digReturnCode response remote_os_domain="versions.pi-hole.net" detected_os=$(grep "\bID\b" /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-insensistive) 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/prerequesites/#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 | PIHOLE_SKIP_OS_CHECK=true sudo -E bash%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}" printf "\\n" printf " If you are seeing this message after having run pihole -up:\\n" printf " %bPIHOLE_SKIP_OS_CHECK=true sudo -E 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 } # Compatibility distro_check() { # If apt-get is installed, then we know it's part of the Debian family if is_command apt-get ; then # Set some global variables here # We don't set them earlier since the family might be Red Hat, 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" # Some distros vary slightly so these fixes for dependencies may apply # on Ubuntu 18.04.1 LTS we need to add the universe repository to gain access to dhcpcd5 APT_SOURCES="/etc/apt/sources.list" if awk 'BEGIN{a=1;b=0}/bionic main/{a=0}/bionic.*universe/{b=1}END{exit a + b}' ${APT_SOURCES}; then if ! whiptail --defaultno --title "Dependencies Require Update to Allowed Repositories" --yesno "Would you like to enable 'universe' repository?\\n\\nThis repository is required by the following packages:\\n\\n- dhcpcd5" "${r}" "${c}"; then printf " %b Aborting installation: Dependencies could not be installed.\\n" "${CROSS}" exit 1 else printf " %b Enabling universe package repository for Ubuntu Bionic\\n" "${INFO}" cp -p ${APT_SOURCES} ${APT_SOURCES}.backup # Backup current repo list printf " %b Backed up current configuration to %s\\n" "${TICK}" "${APT_SOURCES}.backup" add-apt-repository universe printf " %b Enabled %s\\n" "${TICK}" "'universe' repository" fi fi # Update package cache. This is required already here to assure apt-cache calls have package lists available. update_package_cache || exit 1 # Debian 7 doesn't have iproute2 so check if it's available first if apt-cache show iproute2 > /dev/null 2>&1; then iproute_pkg="iproute2" # Otherwise, check if iproute is available elif apt-cache show iproute > /dev/null 2>&1; then iproute_pkg="iproute" # Else print error and exit else printf " %b Aborting installation: iproute2 and iproute packages were not found in APT repository.\\n" "${CROSS}" exit 1 fi # Check for and determine version number (major and minor) of current php install if is_command php ; then printf " %b Existing PHP installation detected : PHP version %s\\n" "${INFO}" "$(php <<< "")" printf -v phpInsMajor "%d" "$(php <<< "")" printf -v phpInsMinor "%d" "$(php <<< "")" # Is installed php version 7.0 or greater if [ "${phpInsMajor}" -ge 7 ]; then phpInsNewer=true fi fi # Several other packages depend on the version of PHP. If PHP is not installed, or an insufficient version, # those packages should fall back to the default (latest?) if [[ "$phpInsNewer" != true ]]; then # Prefer the php metapackage if it's there if apt-cache show php > /dev/null 2>&1; then phpVer="php" # Else fall back on the php5 package if it's there elif apt-cache show php5 > /dev/null 2>&1; then phpVer="php5" # Else print error and exit else printf " %b Aborting installation: No PHP packages were found in APT repository.\\n" "${CROSS}" exit 1 fi else # Else, PHP is already installed at a version beyond v7.0, so the additional packages # should match version with the current PHP version. phpVer="php$phpInsMajor.$phpInsMinor" fi # We also need the correct version for `php-sqlite` (which differs across distros) if apt-cache show "${phpVer}-sqlite3" > /dev/null 2>&1; then phpSqlite="sqlite3" elif apt-cache show "${phpVer}-sqlite" > /dev/null 2>&1; then phpSqlite="sqlite" else printf " %b Aborting installation: No SQLite PHP module was found in APT repository.\\n" "${CROSS}" exit 1 fi # Packages required to run this install script (stored as an array) INSTALLER_DEPS=(dhcpcd5 git "${iproute_pkg}" whiptail dnsutils) # Packages required to run Pi-hole (stored as an array) PIHOLE_DEPS=(cron curl iputils-ping lsof netcat psmisc sudo unzip idn2 sqlite3 libcap2-bin dns-root-data libcap2) # 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" "${phpVer}-${phpSqlite}" "${phpVer}-xml" "${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 [[ "${phpInsNewer}" != true || "${phpInsMajor}" -lt 8 ]]; then PIHOLE_WEB_DEPS+=("${phpVer}-json") fi # The Web server user, LIGHTTPD_USER="www-data" # group, LIGHTTPD_GROUP="www-data" # and config file LIGHTTPD_CFG="lighttpd.conf.debian" # This function waits for dpkg to unlock, which signals that the previous apt-get command has finished. test_dpkg_lock() { i=0 # fuser is a program to show which processes use the named files, sockets, or filesystems # So while the lock is held, while fuser /var/lib/dpkg/lock >/dev/null 2>&1 do # we wait half a second, sleep 0.5 # increase the iterator, ((i=i+1)) done # and then report success once dpkg is unlocked. return 0 } # If apt-get is not found, check for rpm to see if it's a Red Hat family OS elif is_command rpm ; then # Then check if dnf or yum is the package manager if is_command dnf ; then PKG_MANAGER="dnf" else PKG_MANAGER="yum" fi # These variable names match the ones in the Debian family. See above for an explanation of what they are for. PKG_INSTALL=("${PKG_MANAGER}" install -y) PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l" INSTALLER_DEPS=(git iproute newt procps-ng which chkconfig bind-utils) PIHOLE_DEPS=(cronie curl findutils nmap-ncat sudo unzip libidn2 psmisc sqlite libcap lsof) PIHOLE_WEB_DEPS=(lighttpd lighttpd-fastcgi php-common php-cli php-pdo php-xml php-json php-intl) LIGHTTPD_USER="lighttpd" LIGHTTPD_GROUP="lighttpd" LIGHTTPD_CFG="lighttpd.conf.fedora" # If the host OS is Fedora, if grep -qiE 'fedora|fedberry' /etc/redhat-release; then # all required packages should be available by default with the latest fedora release : # continue # or if host OS is CentOS, elif grep -qiE 'centos|scientific' /etc/redhat-release; then # Pi-Hole currently supports CentOS 7+ with PHP7+ SUPPORTED_CENTOS_VERSION=7 SUPPORTED_CENTOS_PHP_VERSION=7 # Check current CentOS major release version CURRENT_CENTOS_VERSION=$(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 # CentOS requires the EPEL repository to gain access to Fedora packages EPEL_PKG="epel-release" rpm -q ${EPEL_PKG} &> /dev/null || rc=$? if [[ $rc -ne 0 ]]; then printf " %b Enabling EPEL package repository (https://fedoraproject.org/wiki/EPEL)\\n" "${INFO}" "${PKG_INSTALL[@]}" ${EPEL_PKG} &> /dev/null printf " %b Installed %s\\n" "${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 else REMI_PKG="remi-release" REMI_REPO="remi-php72" rpm -q ${REMI_PKG} &> /dev/null || rc=$? if [[ $rc -ne 0 ]]; then # The PHP version available via default repositories is older than version 7 if ! whiptail --defaultno --title "PHP 7 Update (recommended)" --yesno "PHP 7.x is recommended for both security and language features.\\nWould you like to install PHP7 via Remi's RPM repository?\\n\\nSee: https://rpms.remirepo.net for more information" "${r}" "${c}"; then # User decided to NOT update PHP from REMI, attempt to install the default available PHP version printf " %b User opt-out of PHP 7 upgrade on CentOS. Deprecated PHP may be in use.\\n" "${INFO}" : # continue with unsupported php version else printf " %b Enabling Remi's RPM repository (https://rpms.remirepo.net)\\n" "${INFO}" "${PKG_INSTALL[@]}" "https://rpms.remirepo.net/enterprise/${REMI_PKG}-$(rpm -E '%{rhel}').rpm" &> /dev/null # enable the PHP 7 repository via yum-config-manager (provided by yum-utils) "${PKG_INSTALL[@]}" "yum-utils" &> /dev/null yum-config-manager --enable ${REMI_REPO} &> /dev/null printf " %b Remi's RPM repository has been enabled for PHP7\\n" "${TICK}" # 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" "${CROSS}" exit 1 fi fi fi fi else # Warn user of unsupported version of Fedora or CentOS if ! whiptail --defaultno --title "Unsupported RPM based distribution" --yesno "Would you like to continue installation on an unsupported RPM based distribution?\\n\\nPlease ensure the following packages have been installed manually:\\n\\n- lighttpd\\n- lighttpd-fastcgi\\n- PHP version 7+" "${r}" "${c}"; then printf " %b Aborting installation due to unsupported RPM based distribution\\n" "${CROSS}" exit else printf " %b Continuing installation with unsupported RPM based distribution\\n" "${INFO}" fi fi # If neither apt-get or yum/dnf package managers were found else # it's not an OS we can support, printf " %b OS distribution not supported\\n" "${CROSS}" # so exit the installer exit 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 --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 $2}' | cut -d':' -f1 | cut -d'@' -f1) } # A function for displaying the dialogs the user sees when first running the installer welcomeDialogs() { # Display the welcome dialog using an appropriately sized window via the calculation conducted earlier in the script whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "\\n\\nThis installer will transform your device into a network-wide ad blocker!" "${r}" "${c}" # Request that users donate if they enjoy the software since we all work on it in our free time whiptail --msgbox --backtitle "Plea" --title "Free and open source" "\\n\\nThe Pi-hole is free, but powered by your donations: https://pi-hole.net/donate/" "${r}" "${c}" # Explain the need for a static address whiptail --msgbox --backtitle "Initiating network interface" --title "Static IP Needed" "\\n\\nThe Pi-hole is a SERVER so it needs a STATIC IP ADDRESS to function properly. In the next section, you can choose to use your current network settings (DHCP) or to manually edit them." "${r}" "${c}" } # A function that lets the user pick an interface to use with Pi-hole chooseInterface() { # Turn the available interfaces into an array so it can be used with a whiptail dialog local interfacesArray=() # Number of available interfaces local interfaceCount # Whiptail variable storage local chooseInterfaceCmd # Temporary Whiptail options storage local chooseInterfaceOptions # Loop sentinel variable local firstLoop=1 # Find out how many interfaces are available to choose from interfaceCount=$(wc -l <<< "${availableInterfaces}") # If there is one interface, if [[ "${interfaceCount}" -eq 1 ]]; then # Set it as the interface to use since there is no other option PIHOLE_INTERFACE="${availableInterfaces}" # Otherwise, else # While reading through the available interfaces while read -r line; do # Use a variable to set the option as OFF to begin with mode="OFF" # If it's the first loop, if [[ "${firstLoop}" -eq 1 ]]; then # set this as the interface to use (ON) firstLoop=0 mode="ON" fi # Put all these interfaces into an array interfacesArray+=("${line}" "available" "${mode}") # Feed the available interfaces into this while loop done <<< "${availableInterfaces}" # The whiptail command that will be run, stored in a variable chooseInterfaceCmd=(whiptail --separate-output --radiolist "Choose An Interface (press space to toggle selection)" "${r}" "${c}" "${interfaceCount}") # Now run the command using the interfaces saved into the array chooseInterfaceOptions=$("${chooseInterfaceCmd[@]}" "${interfacesArray[@]}" 2>&1 >/dev/tty) || \ # If the user chooses Cancel, exit { printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; } # For each interface for desiredInterface in ${chooseInterfaceOptions}; do # Set the one the user selected as the interface to use PIHOLE_INTERFACE=${desiredInterface} # and show this information to the user printf " %b Using interface: %s\\n" "${INFO}" "${PIHOLE_INTERFACE}" done 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$first)%256 )) # the ULA test is testing for fc00::/7 according to RFC 4193 if (( (value1&254)==252 )); then # echoing result to calling function as return value echo "ULA" fi # the GUA test is testing for 2000::/3 according to RFC 4291 if (( (value1&112)==32 )); then # echoing result to calling function as return value echo "GUA" fi # the LL test is testing for fe80::/10 according to RFC 4193 if (( (value1)==254 )) && (( (value2&192)==128 )); then # echoing result to calling function as return value echo "Link-local" fi } # A dialog for showing the user about IPv6 blocking useIPv6dialog() { # Determine the IPv6 address used for blocking IPV6_ADDRESSES=($(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, using it for blocking IPv6 ads\\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, using it for blocking IPv6 ads\\n" "${INFO}" # And assign it to the global variable IPV6_ADDRESS="${GUA_ADDRESS}" # If none of those work, else # explain that IPv6 blocking will not be used printf " %b Unable to find IPv6 ULA/GUA address, IPv6 adblocking will not be enabled\\n" "${INFO}" # So set the variable to be empty IPV6_ADDRESS="" fi # If the IPV6_ADDRESS contains a value if [[ ! -z "${IPV6_ADDRESS}" ]]; then # Display that IPv6 is supported and will be used whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$IPV6_ADDRESS will be used to block ads." "${r}" "${c}" fi } # A function to check if we should use IPv4 and/or IPv6 for blocking ads use4andor6() { # Named local variables local useIPv4 local useIPv6 # Let user choose IPv4 and/or IPv6 via a checklist cmd=(whiptail --separate-output --checklist "Select Protocols (press space to toggle selection)" "${r}" "${c}" 2) # In an array, show the options available: # IPv4 (on by default) options=(IPv4 "Block ads over IPv4" on # or IPv6 (on by default if available) IPv6 "Block ads over IPv6" on) # In a variable, show the choices available; exit if Cancel is selected choices=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty) || { printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; } # For each choice available, for choice in ${choices} do # Set the values to true case ${choice} in IPv4 ) useIPv4=true;; IPv6 ) useIPv6=true;; esac done # If IPv4 is to be used, if [[ "${useIPv4}" ]]; then # Run our function to get the information we need find_IPv4_information getStaticIPv4Settings setStaticIPv4 fi # If IPv6 is to be used, if [[ "${useIPv6}" ]]; then # Run our function to get this information useIPv6dialog fi # Echo the information to the user printf " %b IPv4 address: %s\\n" "${INFO}" "${IPV4_ADDRESS}" printf " %b IPv6 address: %s\\n" "${INFO}" "${IPV6_ADDRESS}" # If neither protocol is selected, if [[ ! "${useIPv4}" ]] && [[ ! "${useIPv6}" ]]; then # Show an error in red printf " %bError: Neither IPv4 or IPv6 selected%b\\n" "${COL_LIGHT_RED}" "${COL_NC}" # and exit with an error exit 1 fi } getStaticIPv4Settings() { # Local, named variables local ipSettingsCorrect # Ask if the user wants to use DHCP settings as their static IP # This is useful for users that are using DHCP reservations; then we can just use the information gathered via our functions if whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Do you want to use your current network settings as a static address? IP address: ${IPV4_ADDRESS} Gateway: ${IPv4gw}" "${r}" "${c}"; then # If they choose yes, let the user know that the IP address will not be available via DHCP and may cause a conflict. whiptail --msgbox --backtitle "IP information" --title "FYI: IP Conflict" "It is possible your router could still try to assign this IP to a device, which would cause a conflict. But in most cases the router is smart enough to not do that. If you are worried, either manually set the address, or modify the DHCP reservation pool so it does not include the IP you want. It is also possible to use a DHCP reservation, but if you are going to do that, you might as well set a static address." "${r}" "${c}" # Nothing else to do since the variables are already set above else # Otherwise, we need to ask the user to input their desired settings. # Start by getting the IPv4 address (pre-filling it with info gathered from DHCP) # Start a loop to let the user enter their information with the chance to go back and edit it if necessary until [[ "${ipSettingsCorrect}" = True ]]; do # Ask for the IPv4 address IPV4_ADDRESS=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" "${r}" "${c}" "${IPV4_ADDRESS}" 3>&1 1>&2 2>&3) || \ # Canceling IPv4 settings window { ipSettingsCorrect=False; echo -e " ${COL_LIGHT_RED}Cancel was selected, exiting installer${COL_NC}"; exit 1; } printf " %b Your static IPv4 address: %s\\n" "${INFO}" "${IPV4_ADDRESS}" # Ask for the gateway IPv4gw=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 gateway (router)" --inputbox "Enter your desired IPv4 default gateway" "${r}" "${c}" "${IPv4gw}" 3>&1 1>&2 2>&3) || \ # Canceling gateway settings window { ipSettingsCorrect=False; echo -e " ${COL_LIGHT_RED}Cancel was selected, exiting installer${COL_NC}"; exit 1; } printf " %b Your static IPv4 gateway: %s\\n" "${INFO}" "${IPv4gw}" # Give the user a chance to review their settings before moving on if whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Are these settings correct? IP address: ${IPV4_ADDRESS} Gateway: ${IPv4gw}" "${r}" "${c}"; then # After that's done, the loop ends and we move on ipSettingsCorrect=True else # If the settings are wrong, the loop continues ipSettingsCorrect=False fi done # End the if statement for DHCP vs. static fi } # Configure networking via dhcpcd setDHCPCD() { # Check if the IP is already in the file if grep -q "${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 } # Configure networking ifcfg-xxxx file found at /etc/sysconfig/network-scripts/ # This function requires the full path of an ifcfg file passed as an argument setIFCFG() { # Local, named variables local IFCFG_FILE local IPADDR local CIDR IFCFG_FILE=$1 printf -v IPADDR "%s" "${IPV4_ADDRESS%%/*}" # Check if the desired IP is already set if grep -Eq "${IPADDR}(\\b|\\/)" "${IFCFG_FILE}"; then printf " %b Static IP already configured\\n" "${INFO}" else # Otherwise, put the IP in variables without the CIDR notation printf -v CIDR "%s" "${IPV4_ADDRESS##*/}" # Backup existing interface configuration: cp -p "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig # Build Interface configuration file using the GLOBAL variables we have { echo "# Configured via Pi-hole installer" echo "DEVICE=$PIHOLE_INTERFACE" echo "BOOTPROTO=none" echo "ONBOOT=yes" echo "IPADDR=$IPADDR" echo "PREFIX=$CIDR" echo "GATEWAY=$IPv4gw" echo "DNS1=$PIHOLE_DNS_1" echo "DNS2=$PIHOLE_DNS_2" echo "USERCTL=no" }> "${IFCFG_FILE}" chmod 644 "${IFCFG_FILE}" chown root:root "${IFCFG_FILE}" # Use ip to immediately set the new address ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}" # If NetworkMangler command line interface exists and ready to mangle, if is_command nmcli && nmcli general status &> /dev/null; then # Tell NetworkManagler to read our new sysconfig file nmcli con load "${IFCFG_FILE}" > /dev/null fi # Show a warning that the user may need to restart printf " %b Set IP address to %s\\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%%/*}" fi } setStaticIPv4() { # Local, named variables local IFCFG_FILE local CONNECTION_NAME # If a static interface is already configured, we are done. if [[ -r "/etc/sysconfig/network/ifcfg-${PIHOLE_INTERFACE}" ]]; then if grep -q '^BOOTPROTO=.static.' "/etc/sysconfig/network/ifcfg-${PIHOLE_INTERFACE}"; then return 0 fi fi # For the Debian family, if dhcpcd.conf exists then we can just configure using DHCPD. if [[ -f "/etc/dhcpcd.conf" ]]; then setDHCPCD return 0 fi # If a DHCPCD config file was not found, check for an ifcfg config file based on the interface name if [[ -f "/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}" ]];then # If it exists, then we can configure using IFCFG IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE} setIFCFG "${IFCFG_FILE}" return 0 fi # If an ifcfg config does not exists for the interface name, search for one based on the connection name via network manager if is_command nmcli && nmcli general status &> /dev/null; then CONNECTION_NAME=$(nmcli dev show "${PIHOLE_INTERFACE}" | grep 'GENERAL.CONNECTION' | cut -d: -f2 | sed 's/^System//' | xargs | tr ' ' '_') IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${CONNECTION_NAME} if [[ -f "${IFCFG_FILE}" ]];then # If it exists, setIFCFG "${IFCFG_FILE}" return 0 else printf " %b Warning: sysconfig network script not found. Creating ${IFCFG_FILE}\\n" "${INFO}" touch "${IFCFG_FILE}" setIFCFG "${IFCFG_FILE}" return 0 fi fi # If previous conditions failed, show an error and exit printf " %b Warning: Unable to locate configuration file to set static IPv4 address\\n" "${INFO}" exit 1 } # Check an IP address to see if it is a valid one valid_ip() { # Local, named variables local ip=${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=${OIFS} # In a whiptail dialog, show the options DNSchoices=$(whiptail --separate-output --menu "Select Upstream DNS Provider. To use your own, select Custom." "${r}" "${c}" 7 \ "${DNSChooseOptions[@]}" 2>&1 >/dev/tty) || \ # Exit if the user selects "Cancel" { printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; } # Depending on the user's choice, set the GLOBAL variables to the IP of the respective provider if [[ "${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 whiptail 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}, ${PIHOLE_DNS_2}" fi # Prompt the user to enter custom upstream servers piholeDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)" --inputbox "Enter your desired upstream DNS provider(s), separated by a comma.\\n\\nFor example '8.8.8.8, 8.8.4.4'" "${r}" "${c}" "${prePopulate}" 3>&1 1>&2 2>&3) || \ { printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; } # Clean user input and replace whitespace with comma. piholeDNS=$(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, whiptail --msgbox --backtitle "Invalid IP" --title "Invalid IP" "One or both entered IP addresses were invalid. Please try again.\\n\\n DNS Server 1: $PIHOLE_DNS_1\\n DNS Server 2: ${PIHOLE_DNS_2}" ${r} ${c} # set the variables back to nothing, if [[ "${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 # Otherwise, show the DNS setting to the user, and break the loop if they confirm them. if (whiptail --backtitle "Specify Upstream DNS Provider(s)" --title "Upstream DNS Provider(s)" --yesno "Are these settings correct?\\n DNS Server 1: $PIHOLE_DNS_1\\n DNS Server 2: ${PIHOLE_DNS_2}" "${r}" "${c}"); then DNSSettingsCorrect=True else DNSSettingsCorrect=False fi fi done else # Save the old Internal Field Separator in a variable, OIFS=$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() { # Local, named variables local LogToggleCommand local LogChooseOptions local LogChoices # Ask if the user wants to log queries LogToggleCommand=(whiptail --separate-output --radiolist "Do you want to log queries?" "${r}" "${c}" 6) # The default selection is on LogChooseOptions=("On (Recommended)" "" on Off "" off) # Get the user's choice LogChoices=$("${LogToggleCommand[@]}" "${LogChooseOptions[@]}" 2>&1 >/dev/tty) || (printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}" && exit 1) case ${LogChoices} in # If it's on, "On (Recommended)") printf " %b Logging On.\\n" "${INFO}" # set the GLOBAL variable setting to true QUERY_LOGGING=true ;; # Otherwise, it's off, Off) printf " %b Logging Off.\\n" "${INFO}" # set the GLOBAL variable setting to false QUERY_LOGGING=false ;; esac } # Allow the user to set their FTL privacy level setPrivacyLevel() { local LevelCommand local LevelOptions LevelCommand=(whiptail --separate-output --radiolist "Select a privacy mode for FTL. https://docs.pi-hole.net/ftldns/privacylevels/" "${r}" "${c}" 6) # The default selection is level 0 LevelOptions=( "0" "Show everything" on "1" "Hide domains" off "2" "Hide domains and clients" off "3" "Anonymous mode" off ) # Get the user's choice PRIVACY_LEVEL=$("${LevelCommand[@]}" "${LevelOptions[@]}" 2>&1 >/dev/tty) || (echo -e " ${COL_LIGHT_RED}Cancel was selected, exiting installer${COL_NC}" && exit 1) printf " %b Privacy level %d" "${INFO}" "${PRIVACY_LEVEL}" } # Function to ask the user if they want to install the dashboard setAdminFlag() { # Local, named variables local WebToggleCommand local WebChooseOptions local WebChoices # Similar to the logging function, ask what the user wants WebToggleCommand=(whiptail --separate-output --radiolist "Do you wish to install the web admin interface?" "${r}" "${c}" 6) # with the default being enabled WebChooseOptions=("On (Recommended)" "" on Off "" off) WebChoices=$("${WebToggleCommand[@]}" "${WebChooseOptions[@]}" 2>&1 >/dev/tty) || (printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}" && exit 1) # Depending on their choice case ${WebChoices} in "On (Recommended)") printf " %b Web Interface On\\n" "${INFO}" # Set it to true INSTALL_WEB_INTERFACE=true ;; Off) printf " %b Web Interface Off\\n" "${INFO}" # or false INSTALL_WEB_INTERFACE=false # Deselect the web server as well, since it is obsolete then INSTALL_WEB_SERVER=false ;; esac # If the user wants to install the Web admin interface (i.e. it has not been deselected above) if [[ "${INSTALL_WEB_SERVER}" == 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+=" ${i#*-}"; done WebToggleCommand=(whiptail --separate-output --radiolist "Do you wish to install the web server (lighttpd) and required PHP modules?\\n\\nNB: If you disable this, and, do not have an existing web server and required PHP modules (${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}" 6) # Enable as default and recommended option WebChooseOptions=("On (Recommended)" "" on Off "" off) WebChoices=$("${WebToggleCommand[@]}" "${WebChooseOptions[@]}" 2>&1 >/dev/tty) || (printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}" && exit 1) # Depending on their choice case ${WebChoices} in "On (Recommended)") printf " %b Web Server On\\n" "${INFO}" # set it to true, as clearly seen below. INSTALL_WEB_SERVER=true ;; Off) printf " %b Web Server Off\\n" "${INFO}" # or false INSTALL_WEB_SERVER=false ;; esac fi } # A function to display a list of example blocklists for users to select chooseBlocklists() { # Back up any existing adlist file, on the off chance that it exists. Useful in case of a reconfigure. if [[ -f "${adlistFile}" ]]; then mv "${adlistFile}" "${adlistFile}.old" fi # Let user select (or not) blocklists via a checklist cmd=(whiptail --separate-output --checklist "Pi-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\\nTo deselect the suggested list, use spacebar" "${r}" "${c}" 5) # In an array, show the options available (all off by default): options=(StevenBlack "StevenBlack's Unified Hosts List" on) # In a variable, show the choices available; exit if Cancel is selected choices=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty) || { printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; rm "${adlistFile}" ;exit 1; } # Add all selected choices to the lists file for choice in ${choices} do appendToListsFile "${choice}" done # Create an empty adList file with appropriate permissions. touch "${adlistFile}" chmod 644 "${adlistFile}" } # Accept a string parameter, it must be one of the default lists # This function saves duplication between chooseBlocklists and installDefaultBlocklists appendToListsFile() { case $1 in StevenBlack ) echo "https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts" >> "${adlistFile}";; esac } # 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 "${adlistFile}" ]]; then return; fi appendToListsFile StevenBlack } # Check if /etc/dnsmasq.conf is from pi-hole. If so replace with an original and install new in .d directory version_check_dnsmasq() { # Local, named variables local dnsmasq_conf="/etc/dnsmasq.conf" local dnsmasq_conf_orig="/etc/dnsmasq.conf.orig" local dnsmasq_pihole_id_string="addn-hosts=/etc/pihole/gravity.list" local dnsmasq_pihole_id_string2="# Dnsmasq config for Pi-hole's FTLDNS" local dnsmasq_original_config="${PI_HOLE_LOCAL_REPO}/advanced/dnsmasq.conf.original" local dnsmasq_pihole_01_snippet="${PI_HOLE_LOCAL_REPO}/advanced/01-pihole.conf" local dnsmasq_pihole_01_location="/etc/dnsmasq.d/01-pihole.conf" # If the dnsmasq config file exists if [[ -f "${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 Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf..." "${INFO}" # Check to see if dnsmasq directory exists (it may not due to being a fresh install and dnsmasq no longer being a dependency) if [[ ! -d "/etc/dnsmasq.d" ]];then install -d -m 755 "/etc/dnsmasq.d" fi # Copy the new Pi-hole DNS config file into the dnsmasq.d directory install -D -m 644 -T "${dnsmasq_pihole_01_snippet}" "${dnsmasq_pihole_01_location}" printf "%b %b Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf\\n" "${OVER}" "${TICK}" # Replace our placeholder values with the GLOBAL DNS variables that we populated earlier # First, swap in the interface to listen on, sed -i "s/@INT@/$PIHOLE_INTERFACE/" "${dnsmasq_pihole_01_location}" if [[ "${PIHOLE_DNS_1}" != "" ]]; then # then swap in the primary DNS server. sed -i "s/@DNS1@/$PIHOLE_DNS_1/" "${dnsmasq_pihole_01_location}" else # Otherwise, remove the line which sets DNS1. sed -i '/^server=@DNS1@/d' "${dnsmasq_pihole_01_location}" fi # Ditto if DNS2 is not empty if [[ "${PIHOLE_DNS_2}" != "" ]]; then sed -i "s/@DNS2@/$PIHOLE_DNS_2/" "${dnsmasq_pihole_01_location}" else sed -i '/^server=@DNS2@/d' "${dnsmasq_pihole_01_location}" fi # Set the cache size sed -i "s/@CACHE_SIZE@/$CACHE_SIZE/" ${dnsmasq_pihole_01_location} sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/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/' "${dnsmasq_pihole_01_location}" else # Otherwise, enable it by uncommenting the directive in the DNS config file sed -i 's/^#log-queries/log-queries/' "${dnsmasq_pihole_01_location}" fi } # 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 "${PI_HOLE_CONFIG_DIR}/dns-servers.conf" # Install empty file if it does not exist if [[ ! -r "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" ]]; then install -d -m 0755 ${PI_HOLE_CONFIG_DIR} if ! install -o pihole -m 664 /dev/null "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" &>/dev/null; then printf " %bError: 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 " %bError: Unable to initialize configuration file %s/custom.list\\n" "${COL_LIGHT_RED}" "${PI_HOLE_CONFIG_DIR}" return 1 fi fi # 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 "/etc/lighttpd/lighttpd.conf" ]]; then # back up the original mv /etc/lighttpd/lighttpd.conf /etc/lighttpd/lighttpd.conf.orig fi # and copy in the config file Pi-hole needs install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/advanced/${LIGHTTPD_CFG} /etc/lighttpd/lighttpd.conf # Make sure the external.conf file exists, as lighttpd v1.4.50 crashes without it touch /etc/lighttpd/external.conf chmod 644 /etc/lighttpd/external.conf # 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"/' /etc/lighttpd/lighttpd.conf 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 install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/manpages/pihole-FTL.conf.5 /usr/local/share/man/man5/pihole-FTL.conf.5 if mandb -q &>/dev/null; then # Updated successfully printf "%b %b man pages installed and database updated\\n" "${OVER}" "${TICK}" return else # Something is wrong with the system's man installation, clean up # our files, (leave everything how we found it). rm /usr/local/share/man/man8/pihole.8 /usr/local/share/man/man8/pihole-FTL.8 /usr/local/share/man/man5/pihole-FTL.conf.5 printf "%b %b man page db not updated, man pages not installed\\n" "${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}" "${INFO}" fi } update_package_cache() { # Running apt-get update/upgrade with minimal output can cause some issues with # requiring user input (e.g password for phpmyadmin see #218) # Update package cache on apt based OSes. Do this every time since # it's quick and packages can be updated at any time. # Local, named variables local str="Update local cache of available packages" printf " %b %s..." "${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}" "${str}" else # Otherwise, show an error and exit printf "%b %b %s\\n" "${OVER}" "${CROSS}" "${str}" printf " %bError: Unable to update package cache. Please try \"%s\"%b" "${COL_LIGHT_RED}" "${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 } # This counter is outside of install_dependent_packages so that it can count the number of times the function is called. counter=0 install_dependent_packages() { # Local, named variables should be used here, especially for an iterator # Add one to the counter counter=$((counter+1)) if [[ "${counter}" == 1 ]]; then # On the first loop, print a special message printf " %b Installer Dependency checks...\\n" "${INFO}" else # On all subsequent loops, print a generic message. printf " %b Main Dependency checks...\\n" "${INFO}" fi # 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 [[ "${#installArray[@]}" -gt 0 ]]; then test_dpkg_lock printf " %b Processing %s install(s) for: %s, please wait...\\n" "${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}" "${str}" fi fi fi } # This function saves any changes to the setup variables into the setupvars.conf file for future runs finalExports() { # If the Web interface is not set to be installed, if [[ "${INSTALL_WEB_INTERFACE}" == false ]]; then # and if there is not an IPv4 address, if [[ "${IPV4_ADDRESS}" ]]; then # there is no block page, so set IPv4 to 0.0.0.0 (all IP addresses) IPV4_ADDRESS="0.0.0.0" fi if [[ "${IPV6_ADDRESS}" ]]; then # and IPv6 to ::/0 IPV6_ADDRESS="::/0" fi fi # If the setup variable file exists, if [[ -e "${setupVars}" ]]; then # update the variables in the file sed -i.update.bak '/PIHOLE_INTERFACE/d;/IPV4_ADDRESS/d;/IPV6_ADDRESS/d;/PIHOLE_DNS_1\b/d;/PIHOLE_DNS_2\b/d;/QUERY_LOGGING/d;/INSTALL_WEB_SERVER/d;/INSTALL_WEB_INTERFACE/d;/LIGHTTPD_ENABLED/d;/CACHE_SIZE/d;' "${setupVars}" fi # echo the information to the user { echo "PIHOLE_INTERFACE=${PIHOLE_INTERFACE}" echo "IPV4_ADDRESS=${IPV4_ADDRESS}" echo "IPV6_ADDRESS=${IPV6_ADDRESS}" echo "PIHOLE_DNS_1=${PIHOLE_DNS_1}" echo "PIHOLE_DNS_2=${PIHOLE_DNS_2}" echo "QUERY_LOGGING=${QUERY_LOGGING}" echo "INSTALL_WEB_SERVER=${INSTALL_WEB_SERVER}" echo "INSTALL_WEB_INTERFACE=${INSTALL_WEB_INTERFACE}" echo "LIGHTTPD_ENABLED=${LIGHTTPD_ENABLED}" echo "CACHE_SIZE=${CACHE_SIZE}" }>> "${setupVars}" chmod 644 "${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 "${PI_HOLE_LOCAL_REPO}/advanced/Scripts/webpage.sh" # Look for DNS server settings which would have to be reapplied ProcessDNSSettings # Look for DHCP server settings which would have to be reapplied ProcessDHCPSettings } # Install the logrotate script installLogrotate() { local str="Installing latest logrotate script" printf "\\n %b %s..." "${INFO}" "${str}" # Copy the file over from the local repo install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/advanced/Templates/logrotate /etc/pihole/logrotate # Different operating systems have different user / group # settings for logrotate that makes it impossible to create # a static logrotate file that will work with e.g. # Rasbian and Ubuntu at the same time. Hence, we have to # customize the logrotate script here in order to reflect # the local properties of the /var/log directory logusergroup="$(stat -c '%U %G' /var/log)" # If there is a usergroup for log rotation, if [[ ! -z "${logusergroup}" ]]; then # replace the line in the logrotate script with that usergroup. sed -i "s/# su #/su ${logusergroup}/g;" /etc/pihole/logrotate fi printf "%b %b %s\\n" "${OVER}" "${TICK}" "${str}" } # At some point in the future this list can be pruned, for now we'll need it to ensure updates don't break. # Refactoring of install script has changed the name of a couple of variables. Sort them out here. accountForRefactor() { sed -i 's/piholeInterface/PIHOLE_INTERFACE/g' "${setupVars}" sed -i 's/IPv4_address/IPV4_ADDRESS/g' "${setupVars}" sed -i 's/IPv4addr/IPV4_ADDRESS/g' "${setupVars}" sed -i 's/IPv6_address/IPV6_ADDRESS/g' "${setupVars}" sed -i 's/piholeIPv6/IPV6_ADDRESS/g' "${setupVars}" sed -i 's/piholeDNS1/PIHOLE_DNS_1/g' "${setupVars}" sed -i 's/piholeDNS2/PIHOLE_DNS_2/g' "${setupVars}" sed -i 's/^INSTALL_WEB=/INSTALL_WEB_INTERFACE=/' "${setupVars}" # Add 'INSTALL_WEB_SERVER', if its not been applied already: https://github.com/pi-hole/pi-hole/pull/2115 if ! grep -q '^INSTALL_WEB_SERVER=' ${setupVars}; then local webserver_installed=false if grep -q '^INSTALL_WEB_INTERFACE=true' ${setupVars}; then webserver_installed=true fi echo -e "INSTALL_WEB_SERVER=$webserver_installed" >> "${setupVars}" fi } # Install base files and web interface installPihole() { # If the user wants to install the Web interface, if [[ "${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 # For updates and unattended install. if [[ "${useUpdateVars}" == true ]]; then accountForRefactor fi # Install base files and web interface if ! installScripts; then printf " %b Failure in dependent script copy function.\\n" "${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 # 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 ]] && command -v getenforce &> /dev/null; 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 [[ $(grep 'WEBPASSWORD' -c /etc/pihole/setupVars.conf) -gt 0 ]]; then # Else if the password exists from previous setup, we'll load it later pwstring="unchanged" else # Else, inform the user that there is no set password. pwstring="NOT SET" fi # If the user wants to install the dashboard, if [[ "${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 Your Admin Webpage login password is ${pwstring}" fi # Final completion message to user whiptail --msgbox --backtitle "Make it so." --title "Installation Complete!" "Configure your devices to use the Pi-hole as their DNS server using: IPv4: ${IPV4_ADDRESS%/*} IPv6: ${IPV6_ADDRESS:-"Not Configured"} If you set a new IP address, you should restart the Pi. The install log is in /etc/pihole. ${additional}" "${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="This will reset your Pi-hole and allow you to enter new settings." # Display the information to the user UpdateCmd=$(whiptail --title "Existing Install Detected!" --menu "\\n\\nWe have detected an existing install.\\n\\nPlease choose from the following options: \\n($strAdd)" "${r}" "${c}" 2 \ "${opt1a}" "${opt1b}" \ "${opt2a}" "${opt2b}" 3>&2 2>&1 1>&3) || \ { printf " %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; } # 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=$(git pull || return 1) if [[ "$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 ${PI_HOLE_LOCAL_REPO} || \ { printf " %bUnable to reset %s, exiting installer%b\\n" "${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 ${webInterfaceDir} || \ { printf " %bUnable to reset %s, exiting installer%b\\n" "${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} ${piholeGitUrl} || \ { printf " %bUnable to clone %s into %s, unable to continue%b\\n" "${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 " %bUnable 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 latesttag local str="Downloading and Installing FTL" printf " %b %s..." "${INFO}" "${str}" # Move into the temp ftl directory pushd "$(mktemp -d)" > /dev/null || { printf "Unable to make temporary directory for FTL binary download\\n"; return 1; } # Always replace pihole-FTL.service install -T -m 0755 "${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole-FTL.service" "/etc/init.d/pihole-FTL" local ftlBranch local url if [[ -f "/etc/pihole/ftlbranch" ]];then ftlBranch=$( /dev/null # Install the new version with the correct permissions install -T -m 0755 "${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 " %bError: 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}" "${str}" # The URL could not be found printf " %bError: URL %s/%s not found%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}" return 1 fi } disable_dnsmasq() { # dnsmasq can now be stopped and disabled if it exists if which dnsmasq &> /dev/null; then if check_service_active "dnsmasq";then printf " %b FTL can now resolve DNS Queries without dnsmasq running separately\\n" "${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 /bin/ls | 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=$(which pihole-FTL 2>/dev/null) local ftlBranch if [[ -f "/etc/pihole/ftlbranch" ]];then ftlBranch=$( /dev/null; 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=$(sha1sum "$(which 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=$(sha1sum "$(which 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}" "${COL_LIGHT_RED}" exit 1 fi fi # Check for supported distribution distro_check # If the setup variable file exists, if [[ -f "${setupVars}" ]]; then # if it's running unattended, if [[ "${runUnattended}" == true ]]; then printf " %b Performing unattended setup, no whiptail dialogs will be displayed\\n" "${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 # Start the installer # Notify user of package availability notify_package_updates_available # Install packages used by this installation script install_dependent_packages "${INSTALLER_DEPS[@]}" # Check that the installed OS is officially supported - display warning if not os_check # Check if SELinux is Enforcing checkSelinux if [[ "${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 # 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 to block ads over IPv4 and/or IPv6 use4andor6 # 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+=("${PIHOLE_WEB_DEPS[@]}") fi install_dependent_packages "${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 [[ $(grep 'WEBPASSWORD' -c /etc/pihole/setupVars.conf) == 0 ]] ; then # generate a random password pw=$(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" "${INFO}" # Start services # Enable FTL # Ensure the service is enabled before trying to start it # Fixes a problem reported on Ubuntu 18.04 where trying to start # the service before enabling causes installer to exit enable_service pihole-FTL restart_service pihole-FTL # Download and compile the aggregated block list runGravity # Force an update of the updatechecker /opt/pihole/updatecheck.sh /opt/pihole/updatecheck.sh x remote if [[ "${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}" "${IPV6_ADDRESS}" printf " %b If you set a new IP address, please restart the server running the Pi-hole\\n" "${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