87f307f1d8
Split removePiholeFiles into functions for each category. Reorder execution so that: Pihole-FTL is stopped and removed before shutdown scripts are removed. User and group are removed before needed commands are removed. Remove database and log files in user-specified non-default locations, and use local directories from basic install.sh, falling back to defaults. Remove use of sudo as the script already checks that it is called as root. Advise user of location of crontab backup if is created Make use of service control functions, command detection and default directories from basic_install.sh Align variable names with current basic-install.sh Disable pihole-FTL service immediately, if systemctl is available Call systemd daemon-reload after removing service files (on systemd systems) Signed-off-by: Rob Gill <rrobgill@protonmail.com>
227 lines
8.7 KiB
Bash
Executable File
227 lines
8.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 2017 Pi-hole, LLC (https://pi-hole.net)
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# Network-wide ad blocking via your own hardware.
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#
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# Completely uninstalls Pi-hole
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#
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# This file is copyright under the latest version of the EUPL.
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# Please see LICENSE file for your rights under this license.
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# shellcheck source="./advanced/Scripts/COL_TABLE"
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source "/opt/pihole/COL_TABLE"
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# shellcheck source="./advanced/Scripts/utils.sh"
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source "/opt/pihole/utils.sh"
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# getFTLConfigValue() from utils.sh
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while true; do
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read -rp " ${QST} Are you sure you would like to remove ${COL_BOLD}Pi-hole${COL_NC}? [y/N] " answer
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case ${answer} in
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[Yy]* ) break;;
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* ) echo -e "${OVER} ${COL_GREEN}Uninstall has been canceled${COL_NC}"; exit 0;;
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esac
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done
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# Must be root to uninstall
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str="Root user check"
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if [[ ${EUID} -eq 0 ]]; then
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echo -e " ${TICK} ${str}"
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else
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echo -e " ${CROSS} ${str}
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Script called with non-root privileges
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The Pi-hole requires elevated privileges to uninstall"
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exit 1
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fi
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# Get paths for admin interface, log files and database files,
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# to allow deletion where user has specified a non-default location
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ADMIN_INTERFACE_DIR=$(getFTLConfigValue "webserver.paths.webroot")$(getFTLConfigValue "webserver.paths.webhome")
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FTL_LOG=$(getFTLConfigValue "files.log.ftl")
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DNSMASQ_LOG=$(getFTLConfigValue "files.log.dnsmasq")
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WEBSERVER_LOG=$(getFTLConfigValue "files.log.webserver")
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PIHOLE_DB=$(getFTLConfigValue "files.database")
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GRAVITY_DB=$(getFTLConfigValue "files.gravity")
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MACVENDOR_DB=$(getFTLConfigValue "files.macvendor")
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PI_HOLE_LOCAL_REPO="/etc/.pihole"
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# Setting SKIP_INSTALL="true" to source the installer functions without running them
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SKIP_INSTALL="true"
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# shellcheck source="./automated install/basic-install.sh"
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source "${PI_HOLE_LOCAL_REPO}/automated install/basic-install.sh"
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# Functions and Variables sources from basic-install:
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# package_manager_detect(), disable_service(), stop_service(),
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# restart service() and is_command()
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# PI_HOLE_CONFIG_DIR PI_HOLE_INSTALL_DIR PI_HOLE_LOCAL_REPO
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removeMetaPackage() {
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# Purge Pi-hole meta package
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echo ""
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echo -ne " ${INFO} Removing Pi-hole meta package...";
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eval "${PKG_REMOVE}" "pihole-meta" &> /dev/null;
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echo -e "${OVER} ${INFO} Removed Pi-hole meta package";
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}
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removeWebInterface() {
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# Remove the web interface of Pi-hole
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echo -ne " ${INFO} Removing Web Interface..."
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rm -rf "${ADMIN_INTERFACE_DIR:-/var/www/html/admin/}" &> /dev/null
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echo -e "${OVER} ${TICK} Removed Web Interface"
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}
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removeFTL() {
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# Remove FTL and stop any running FTL service
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if is_command "pihole-FTL"; then
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# service stop & disable from basic_install.sh
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stop_service pihole-FTL
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disable_service pihole-FTL
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echo -ne " ${INFO} Removing pihole-FTL..."
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rm -f /etc/systemd/system/pihole-FTL.service &> /dev/null
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if [[ -d '/etc/systemd/system/pihole-FTL.service.d' ]]; then
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read -rp " ${QST} FTL service override directory /etc/systemd/system/pihole-FTL.service.d detected. Do you wish to remove this from your system? [y/N] " answer
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case $answer in
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[yY]*)
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echo -ne " ${INFO} Removing /etc/systemd/system/pihole-FTL.service.d..."
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rm -R /etc/systemd/system/pihole-FTL.service.d &> /dev/null
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echo -e "${OVER} ${INFO} Removed /etc/systemd/system/pihole-FTL.service.d"
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;;
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*) echo -e " ${INFO} Leaving /etc/systemd/system/pihole-FTL.service.d in place.";;
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esac
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fi
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rm -f /etc/init.d/pihole-FTL &> /dev/null
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rm -f /usr/bin/pihole-FTL &> /dev/null
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echo -e "${OVER} ${TICK} Removed pihole-FTL"
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# Force systemd reload after service files are removed
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if is_command "systemctl"; then
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echo -ne " ${INFO} Restarting systemd..."
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systemctl daemon-reload
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echo -e "${OVER} ${TICK} Restarted systemd..."
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fi
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fi
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}
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removeCronFiles() {
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# Attempt to preserve backwards compatibility with older versions
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# to guarantee no additional changes were made to /etc/crontab after
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# the installation of pihole, /etc/crontab.pihole should be permanently
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# preserved.
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if [[ -f /etc/crontab.orig ]]; then
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mv /etc/crontab /etc/crontab.pihole
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mv /etc/crontab.orig /etc/crontab
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restart_service cron
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echo -e " ${TICK} Restored the default system cron"
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echo -e " ${INFO} A backup of the most recent crontab is saved at /etc/crontab.pihole"
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fi
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# Attempt to preserve backwards compatibility with older versions
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if [[ -f /etc/cron.d/pihole ]];then
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rm -f /etc/cron.d/pihole &> /dev/null
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echo -e " ${TICK} Removed /etc/cron.d/pihole"
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fi
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}
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removePiholeFiles() {
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# Remove databases (including user specified non-default paths)
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rm -f "${PIHOLE_DB:-/etc/pihole/pihole-FTL.db}" &> /dev/null
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rm -f "${GRAVITY_DB:-/etc/pihole/gravity.db}" &> /dev/null
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rm -f "${MACVENDOR_DB:-/etc/pihole/macvendor.db}" &> /dev/null
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# Remove pihole config, repo and local files
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rm -rf "${PI_HOLE_CONFIG_DIR:-/etc/pihole}" &> /dev/null
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rm -rf "${PI_HOLE_LOCAL_REPO:-/etc/.pihole}" &> /dev/null
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rm -rf "${PI_HOLE_INSTALL_DIR:-/opt/pihole}" &> /dev/null
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# Remove log files (including user specified non-default paths)
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# and rotated logs
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# Explicitly escape spaces, in case of trailing space in path before wildcard
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rm -f "$(printf '%q' "${FTL_LOG:-/var/log/pihole/FTL.log}")*" &> /dev/null
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rm -f "$(printf '%q' "${DNSMASQ_LOG:-/var/log/pihole/pihole.log}")*" &> /dev/null
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rm -f "$(printf '%q' "${WEBSERVER_LOG:-/var/log/pihole/webserver.log}")*" &> /dev/null
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# remove any remnant log-files from old versions
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rm -rf /var/log/*pihole* &> /dev/null
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# remove log directory
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rm -rf /var/log/pihole &> /dev/null
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# remove the pihole command
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rm -f /usr/local/bin/pihole &> /dev/null
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# remove Pi-hole's bash completion
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rm -f /etc/bash_completion.d/pihole &> /dev/null
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rm -f /etc/bash_completion.d/pihole-FTL &> /dev/null
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# Remove pihole from sudoers for compatibility with old versions
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rm -f /etc/sudoers.d/pihole &> /dev/null
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echo -e " ${TICK} Removed config files"
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}
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removeManPage() {
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# If the pihole manpage exists, then delete
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if [[ -f /usr/local/share/man/man8/pihole.8 ]]; then
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rm -f /usr/local/share/man/man8/pihole.8 /usr/local/share/man/man8/pihole-FTL.8 /usr/local/share/man/man5/pihole-FTL.conf.5
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# Rebuild man-db if present
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if is_command "mandb"; then
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mandb -q &>/dev/null
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fi
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echo -e " ${TICK} Removed pihole man page"
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fi
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}
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removeUser() {
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# If the pihole user exists, then remove
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if id "pihole" &> /dev/null; then
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if userdel -r pihole 2> /dev/null; then
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echo -e " ${TICK} Removed 'pihole' user"
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else
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echo -e " ${CROSS} Unable to remove 'pihole' user"
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fi
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fi
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# If the pihole group exists, then remove
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if getent group "pihole" &> /dev/null; then
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if groupdel pihole 2> /dev/null; then
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echo -e " ${TICK} Removed 'pihole' group"
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else
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echo -e " ${CROSS} Unable to remove 'pihole' group"
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fi
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fi
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}
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restoreResolved() {
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# Restore Resolved from saved configuration, if present
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if [[ -e /etc/systemd/resolved.conf.orig ]] || [[ -e /etc/systemd/resolved.conf.d/90-pi-hole-disable-stub-listener.conf ]]; then
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cp -p /etc/systemd/resolved.conf.orig /etc/systemd/resolved.conf &> /dev/null || true
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rm -f /etc/systemd/resolved.conf.d/90-pi-hole-disable-stub-listener.conf &> /dev/null
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systemctl reload-or-restart systemd-resolved
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fi
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}
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completionMessage() {
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echo -e "\\n We're sorry to see you go, but thanks for checking out Pi-hole!
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If you need help, reach out to us on GitHub, Discourse, Reddit or Twitter
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Reinstall at any time: ${COL_BOLD}curl -sSL https://install.pi-hole.net | bash${COL_NC}
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${COL_RED}Please reset the DNS on your router/clients to restore internet connectivity${COL_NC}
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${INFO} Pi-hole's meta package has been removed, use the 'autoremove' function from your package manager to remove unused dependencies${COL_NC}
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${COL_GREEN}Uninstallation Complete! ${COL_NC}"
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}
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######### SCRIPT ###########
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# The ordering here allows clean uninstallation with nothing
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# removed before anything that depends upon it.
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# eg removeFTL relies on scripts removed by removePiholeFiles
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# removeUser relies on commands removed by removeMetaPackage
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package_manager_detect
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removeWebInterface
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removeCronFiles
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restoreResolved
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removeManPage
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removeFTL
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removeUser
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removeMetaPackage
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removePiholeFiles
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completionMessage
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