mirror of
https://github.com/pivpn/pivpn.git
synced 2024-12-18 19:00:15 +00:00
418 lines
11 KiB
Bash
Executable file
418 lines
11 KiB
Bash
Executable file
#!/bin/bash
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# PiVPN: Uninstall Script
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### FIXME:
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### global: config storage, refactor all scripts to adhere to the storage
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### FIXME:
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### use variables where appropriate, reduce magic numbers by 99.9%, at least.
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# Find the rows and columns. Will default to 80x24 if it can not be detected.
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screen_size="$(stty size 2> /dev/null || echo 24 80)"
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rows="$(echo "${screen_size}" | awk '{print $1}')"
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columns="$(echo "${screen_size}" | awk '{print $2}')"
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# Divide by two so the dialogs take up half of the screen, which looks nice.
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r=$((rows / 2))
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c=$((columns / 2))
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# Unless the screen is tiny
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r=$((r < 20 ? 20 : r))
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c=$((c < 70 ? 70 : c))
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PKG_MANAGER="apt-get"
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PKG_REMOVE="${PKG_MANAGER} -y remove --purge"
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dnsmasqConfig="/etc/dnsmasq.d/02-pivpn.conf"
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setupVarsFile="setupVars.conf"
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setupConfigDir="/etc/pivpn"
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pivpnFilesDir="/usr/local/src/pivpn"
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pivpnScriptDir="/opt/pivpn"
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PLAT="$(grep -sEe '^NAME\=' /etc/os-release \
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| sed -E -e "s/NAME\=[\'\"]?([^ ]*).*/\1/")"
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if [[ "${PLAT}" == 'Alpine' ]]; then
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PKG_MANAGER='apk'
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PKG_REMOVE="${PKG_MANAGER} --no-cache --purge del -r"
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fi
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UPDATE_PKG_CACHE="${PKG_MANAGER} update"
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if [[ -r "${setupConfigDir}/wireguard/${setupVarsFile}" ]] \
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&& [[ -r "${setupConfigDir}/openvpn/${setupVarsFile}" ]]; then
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vpnStillExists=1
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# Two protocols have been installed, check if the script has passed
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# an argument, otherwise ask the user which one he wants to remove
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if [[ "$#" -ge 1 ]]; then
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VPN="${1}"
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echo "::: Uninstalling VPN: ${VPN}"
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else
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chooseVPNCmd=(whiptail
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--backtitle "Setup PiVPN"
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--title "Uninstall"
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--separate-output
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--radiolist "Both OpenVPN and WireGuard are installed, \
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choose a VPN to uninstall (press space to select):"
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"${r}" "${c}" 2)
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VPNChooseOptions=(WireGuard "" on
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OpenVPN "" off)
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if VPN="$("${chooseVPNCmd[@]}" "${VPNChooseOptions[@]}" 2>&1 \
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> /dev/tty)"; then
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echo "::: Uninstalling VPN: ${VPN}"
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VPN="${VPN,,}"
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else
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err "::: Cancel selected, exiting...."
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exit 1
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fi
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fi
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setupVars="${setupConfigDir}/${VPN}/${setupVarsFile}"
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else
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vpnStillExists=0
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if [[ -r "${setupConfigDir}/wireguard/${setupVarsFile}" ]]; then
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setupVars="${setupConfigDir}/wireguard/${setupVarsFile}"
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elif [[ -r "${setupConfigDir}/openvpn/${setupVarsFile}" ]]; then
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setupVars="${setupConfigDir}/openvpn/${setupVarsFile}"
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fi
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fi
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if [[ ! -f "${setupVars}" ]]; then
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err "::: Missing setup vars file!"
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exit 1
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fi
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# shellcheck disable=SC1090
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source "${setupVars}"
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err() {
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echo "[$(date +'%Y-%m-%dT%H:%M:%S%z')]: $*" >&2
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}
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### FIXME: introduce global lib
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spinner() {
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local pid="${1}"
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local delay=0.50
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local spinstr='/-\|'
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while ps a | awk '{print $1}' | grep -q "${pid}"; do
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local temp="${spinstr#?}"
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printf " [%c] " "${spinstr}"
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local spinstr="${temp}${spinstr%"$temp"}"
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sleep "${delay}"
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printf "\\b\\b\\b\\b\\b\\b"
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done
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printf " \\b\\b\\b\\b"
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}
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removeAll() {
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# Stopping and disabling services
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echo "::: Stopping and disabling services..."
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if [[ "${PLAT}" == 'Alpine' ]]; then
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if [[ "${VPN}" == "wireguard" ]]; then
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rc-service wg-quick stop
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rc-update del wg-quick default &> /dev/null
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elif [[ "${VPN}" == "openvpn" ]]; then
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rc-service openvpn stop
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rc-update del openvpn default &> /dev/null
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fi
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else
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if [[ "${VPN}" == "wireguard" ]]; then
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systemctl stop wg-quick@wg0
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systemctl disable wg-quick@wg0 &> /dev/null
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elif [[ "${VPN}" == "openvpn" ]]; then
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systemctl stop openvpn
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systemctl disable openvpn &> /dev/null
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fi
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fi
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# Removing firewall rules.
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echo "::: Removing firewall rules..."
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if [[ "${USING_UFW}" -eq 1 ]]; then
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### Ignoring SC2154, value sourced from setupVars file
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# shellcheck disable=SC2154
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ufw delete allow "${pivpnPORT}/${pivpnPROTO}" > /dev/null
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### Ignoring SC2154, value sourced from setupVars file
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# shellcheck disable=SC2154
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ufw route delete allow in on "${pivpnDEV}" \
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from "${pivpnNET}/${subnetClass}" out on "${IPv4dev}" to any > /dev/null
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ufw delete allow in on "${pivpnDEV}" to any port 53 \
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from "${pivpnNET}/${subnetClass}" > /dev/null
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sed_pattern='/-I POSTROUTING'
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sed_pattern="${sed_pattern} -s ${pivpnNET}\\/${subnetClass}"
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sed_pattern="${sed_pattern} -o ${IPv4dev}"
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sed_pattern="${sed_pattern} -j MASQUERADE"
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sed_pattern="${sed_pattern} -m comment"
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sed_pattern="${sed_pattern} --comment ${VPN}-nat-rule/d"
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sed "${sed_pattern}" -i /etc/ufw/before.rules
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unset sed_pattern
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iptables \
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-t nat \
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-D POSTROUTING \
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-s "${pivpnNET}/${subnetClass}" \
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-o "${IPv4dev}" \
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-j MASQUERADE \
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-m comment \
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--comment "${VPN}-nat-rule"
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ufw reload &> /dev/null
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elif [[ "${USING_UFW}" -eq 0 ]]; then
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if [[ "${INPUT_CHAIN_EDITED}" -eq 1 ]]; then
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iptables \
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-D INPUT \
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-i "${IPv4dev}" \
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-p "${pivpnPROTO}" \
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--dport "${pivpnPORT}" \
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-j ACCEPT \
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-m comment \
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--comment "${VPN}-input-rule"
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fi
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if [[ "${FORWARD_CHAIN_EDITED}" -eq 1 ]]; then
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iptables \
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-D FORWARD \
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-d "${pivpnNET}/${subnetClass}" \
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-i "${IPv4dev}" \
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-o "${pivpnDEV}" \
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-m conntrack \
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--ctstate RELATED,ESTABLISHED \
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-j ACCEPT \
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-m comment \
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--comment "${VPN}-forward-rule"
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iptables \
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-D FORWARD \
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-s "${pivpnNET}/${subnetClass}" \
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-i "${pivpnDEV}" \
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-o "${IPv4dev}" \
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-j ACCEPT \
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-m comment \
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--comment "${VPN}-forward-rule"
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fi
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iptables \
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-t nat \
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-D POSTROUTING \
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-s "${pivpnNET}/${subnetClass}" \
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-o "${IPv4dev}" \
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-j MASQUERADE \
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-m comment \
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--comment "${VPN}-nat-rule"
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iptables-save > /etc/iptables/rules.v4
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fi
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# Disable IPv4 forwarding
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if [[ "${vpnStillExists}" -eq 0 ]]; then
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sed -i '/net.ipv4.ip_forward=1/c\#net.ipv4.ip_forward=1' /etc/sysctl.conf
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sysctl -p
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fi
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# Purge dependencies
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echo "::: Purge dependencies..."
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for i in "${INSTALLED_PACKAGES[@]}"; do
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while true; do
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read -rp "::: Do you wish to remove ${i} from your system? [Y/n]: " yn
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case "${yn}" in
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[Yy]*)
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if [[ "${PLAT}" == 'Alpine' ]]; then
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if [[ "${i}" == 'openvpn' ]]; then
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deluser openvpn
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rm -f /etc/rsyslog.d/30-openvpn.conf /etc/logrotate.d/openvpn
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fi
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else
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if [[ "${i}" == "wireguard-tools" ]]; then
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# The bullseye repo may not exist if wireguard was available at
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# the time of installation.
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tmp_path='/etc/apt/sources.list.d/pivpn-bullseye-repo.list'
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if [[ -f "${tmp_path}" ]]; then
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echo "::: Removing Debian Bullseye repo..."
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rm -f "${tmp_path}"
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rm -f /etc/apt/preferences.d/pivpn-limit-bullseye
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echo "::: Updating package cache..."
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${UPDATE_PKG_CACHE} &> /dev/null &
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spinner "$!"
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fi
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tmp_path='/etc/systemd/system/wg-quick@.service.d/override.conf'
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if [[ -f "${tmp_path}" ]]; then
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rm -f "${tmp_path}"
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fi
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unset tmp_path
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elif [[ "${i}" == "unattended-upgrades" ]]; then
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rm -rf /var/log/unattended-upgrades /etc/apt/apt.conf.d/*periodic
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rm -rf /etc/apt/apt.conf.d/*unattended-upgrades
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elif [[ "${i}" == "openvpn" ]]; then
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if [[ -f /etc/apt/sources.list.d/pivpn-openvpn-repo.list ]]; then
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echo "::: Removing OpenVPN software repo..."
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rm -f /etc/apt/sources.list.d/pivpn-openvpn-repo.list
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echo "::: Updating package cache..."
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${UPDATE_PKG_CACHE} &> /dev/null &
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spinner "$!"
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fi
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deluser openvpn
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rm -f /etc/rsyslog.d/30-openvpn.conf /etc/logrotate.d/openvpn
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fi
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fi
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printf ":::\\tRemoving %s..." "${i}"
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${PKG_REMOVE} "${i}" &> /dev/null &
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spinner "$!"
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printf "done!\\n"
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break
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;;
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[Nn]*)
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printf ":::\\tSkipping %s\\n" "${i}"
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break
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;;
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*)
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err "::: You must answer yes or no!"
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;;
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esac
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done
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done
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if [[ "${PLAT}" != 'Alpine' ]]; then
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# Take care of any additional package cleaning
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printf "::: Auto removing remaining dependencies..."
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"${PKG_MANAGER}" -y autoremove &> /dev/null &
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spinner "$!"
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printf "done!\\n"
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printf "::: Auto cleaning remaining dependencies..."
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"${PKG_MANAGER}" -y autoclean &> /dev/null &
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spinner "$!"
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printf "done!\\n"
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fi
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if [[ -f "${dnsmasqConfig}" ]]; then
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rm -f "${dnsmasqConfig}"
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pihole restartdns
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fi
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echo ":::"
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echo "::: Removing VPN configuration files..."
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if [[ "${VPN}" == "wireguard" ]]; then
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rm -f /etc/wireguard/wg0.conf
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rm -rf /etc/wireguard/configs
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rm -rf /etc/wireguard/keys
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### Ignoring SC2154, value sourced from setupVars file
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# shellcheck disable=SC2154
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rm -rf "${install_home}/configs"
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elif [[ "${VPN}" == "openvpn" ]]; then
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rm -rf /var/log/*openvpn*
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rm -f /etc/openvpn/server.conf
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rm -f /etc/openvpn/crl.pem
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rm -rf /etc/openvpn/easy-rsa
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rm -rf /etc/openvpn/ccd
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rm -rf "${install_home}/ovpns"
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fi
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if [[ "${vpnStillExists}" -eq 0 ]]; then
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echo ":::"
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echo "::: Removing pivpn system files..."
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rm -rf "${setupConfigDir}"
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rm -rf "${pivpnFilesDir}"
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rm -f /var/log/*pivpn*
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rm -f /etc/bash_completion.d/pivpn
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unlink "${pivpnScriptDir}"
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unlink /usr/local/bin/pivpn
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else
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if [[ "${VPN}" == 'wireguard' ]]; then
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othervpn='openvpn'
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else
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othervpn='wireguard'
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fi
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echo ":::"
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echo "::: Other VPN ${othervpn} still present, so not"
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echo "::: removing pivpn system files"
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rm -f "${setupConfigDir}/${VPN}/${setupVarsFile}"
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# Restore single pivpn script and bash completion for the remaining VPN
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${SUDO} unlink /usr/local/bin/pivpn
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${SUDO} ln \
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-s \
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-T "${pivpnFilesDir}/scripts/${othervpn}/pivpn.sh" \
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/usr/local/bin/pivpn
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${SUDO} ln \
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-s \
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-T "${pivpnFilesDir}/scripts/${othervpn}/bash-completion" \
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/etc/bash_completion.d/pivpn
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# shellcheck disable=SC1091
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. /etc/bash_completion.d/pivpn
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fi
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echo ":::"
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printf "::: Finished removing PiVPN from your system.\\n"
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printf "::: Reinstall by simply running\\n:::\\n:::\\t"
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printf "curl -L https://install.pivpn.io | "
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printf "bash\\n:::\\n::: at any time!\\n:::\\n"
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}
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askreboot() {
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printf "It is \\e[1mstrongly\\e[0m recommended to reboot "
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printf "after un-installation.\\n"
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read -p "Would you like to reboot now? [y/n]: " -n 1 -r
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echo
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if [[ "${REPLY}" =~ ^[Yy]$ ]]; then
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printf "\\nRebooting system...\\n"
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sleep 3
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reboot
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fi
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}
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######### SCRIPT ###########
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echo -n "::: Preparing to remove packages, be sure that each may be safely "
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echo "removed depending on your operating system."
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echo "::: (SAFE TO REMOVE ALL ON RASPBIAN)"
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while true; do
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echo -n "::: Do you wish to completely remove PiVPN configuration and "
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echo -n "installed packages from your system? "
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echo -n "(You will be prompted for each package) [y/n]: "
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read -r yn
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case "${yn}" in
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[Yy]*)
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removeAll
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askreboot
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break
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;;
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[Nn]*)
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err "::: Not removing anything, exiting..."
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break
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;;
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esac
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done
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