mirror of
https://github.com/pivpn/pivpn.git
synced 2024-12-21 12:20:16 +00:00
268 lines
8.7 KiB
Bash
Executable file
268 lines
8.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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# PiVPN: Uninstall Script
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### FIXME: global: config storage, refactor all scripts to adhere to the storage
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### FIXME: 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=$(( c < 70 ? 70 : c ))
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PKG_MANAGER="apt-get"
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UPDATE_PKG_CACHE="${PKG_MANAGER} update"
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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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if [ -r "${setupConfigDir}/wireguard/${setupVarsFile}" ] && [ -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: $VPN"
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else
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chooseVPNCmd=(whiptail --backtitle "Setup PiVPN" --title "Uninstall" --separate-output --radiolist "Both OpenVPN and WireGuard are installed, choose a VPN to uninstall (press space to select):" "${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 >/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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echo "::: 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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echo "::: 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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### 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 $delay
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printf "\\b\\b\\b\\b\\b\\b"
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done
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printf " \\b\\b\\b\\b"
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}
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removeAll(){
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# Stopping and disabling services
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echo "::: Stopping and disabling services..."
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if [ "$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 [ "$VPN" = "openvpn" ]; then
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systemctl stop openvpn
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systemctl disable openvpn &> /dev/null
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fi
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# Removing firewall rules.
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echo "::: Removing firewall rules..."
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if [ "$USING_UFW" -eq 1 ]; then
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### FIXME: SC2154
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ufw delete allow "${pivpnPORT}"/"${pivpnPROTO}" > /dev/null
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### FIXME: SC2154
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ufw route delete allow in on "${pivpnDEV}" from "${pivpnNET}/${subnetClass}" out on "${IPv4dev}" to any > /dev/null
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sed "/-I POSTROUTING -s ${pivpnNET}\\/${subnetClass} -o ${IPv4dev} -j MASQUERADE -m comment --comment ${VPN}-nat-rule/d" -i /etc/ufw/before.rules
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iptables -t nat -D POSTROUTING -s "${pivpnNET}/${subnetClass}" -o "${IPv4dev}" -j MASQUERADE -m comment --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 [ "$INPUT_CHAIN_EDITED" -eq 1 ]; then
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iptables -D INPUT -i "${IPv4dev}" -p "${pivpnPROTO}" --dport "${pivpnPORT}" -j ACCEPT -m comment --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 -D FORWARD -d "${pivpnNET}/${subnetClass}" -i "${IPv4dev}" -o "${pivpnDEV}" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -m comment --comment "${VPN}-forward-rule"
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iptables -D FORWARD -s "${pivpnNET}/${subnetClass}" -i "${pivpnDEV}" -o "${IPv4dev}" -j ACCEPT -m comment --comment "${VPN}-forward-rule"
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fi
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iptables -t nat -D POSTROUTING -s "${pivpnNET}/${subnetClass}" -o "${IPv4dev}" -j MASQUERADE -m comment --comment "${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 $yn in
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[Yy]* ) if [ "${i}" = "wireguard-tools" ]; then
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# The bullseye repo may not exist if wireguard was available at the
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# time of installation.
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if [ -f /etc/apt/sources.list.d/pivpn-bullseye-repo.list ]; then
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echo "::: Removing Debian Bullseye repo..."
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rm -f /etc/apt/sources.list.d/pivpn-bullseye-repo.list
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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 & spinner $!
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fi
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if [ -f /etc/systemd/system/wg-quick@.service.d/override.conf ]; then
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rm -f /etc/systemd/system/wg-quick@.service.d/override.conf
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fi
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elif [ "${i}" = "unattended-upgrades" ]; then
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rm -rf /var/log/unattended-upgrades
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rm -rf /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 & spinner $!
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fi
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deluser openvpn
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rm -f /etc/rsyslog.d/30-openvpn.conf
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rm -f /etc/logrotate.d/openvpn
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fi
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printf ":::\\tRemoving %s..." "$i"; $PKG_MANAGER -y remove --purge "$i" &> /dev/null & spinner $!; printf "done!\\n";
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break
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;;
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[Nn]* ) printf ":::\\tSkipping %s\\n" "$i";
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break
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;;
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* ) printf "::: You must answer yes or no!\\n";;
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esac
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done
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done
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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 & spinner $!; printf "done!\\n";
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printf "::: Auto cleaning remaining dependencies..."
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$PKG_MANAGER -y autoclean &> /dev/null & spinner $!; printf "done!\\n";
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if [ -f "$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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### FIXME 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 -s -T "${pivpnFilesDir}/scripts/${othervpn}/pivpn.sh" /usr/local/bin/pivpn
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$SUDO ln -s -T "${pivpnFilesDir}/scripts/${othervpn}/bash-completion" /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 simpling running\\n:::\\n:::\\tcurl -L https://install.pivpn.io | 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 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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shutdown -r now
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fi
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}
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######### SCRIPT ###########
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echo "::: Preparing to remove packages, be sure that each may be safely 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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read -rp "::: Do you wish to completely remove PiVPN configuration and installed packages from your system? (You will be prompted for each package) [y/n]: " yn
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case $yn in
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[Yy]* ) removeAll; askreboot; break;;
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[Nn]* ) printf "::: Not removing anything, exiting...\\n"; break;;
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esac
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done
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