mirror of
https://github.com/pivpn/pivpn.git
synced 2024-12-20 20:00:16 +00:00
222 lines
7 KiB
Bash
Executable file
222 lines
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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PKG_MANAGER="apt-get"
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setupVars="/etc/pivpn/setupVars.conf"
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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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# 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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### 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 $1}' | grep "$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 [ "$VPN" = "openvpn" ]; then
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systemctl stop openvpn
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systemctl disable openvpn &> /dev/null
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fi
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# Removing firewall rules.
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echo "::: Removing firewall rules..."
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### FIXME: introduce global config space!
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if [ "$VPN" = "wireguard" ]; then
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pivpnPROTO="udp"
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pivpnDEV="wg0"
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pivpnNET="10.6.0.0"
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elif [ "$VPN" = "openvpn" ]; then
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pivpnDEV="tun0"
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pivpnNET="10.8.0.0"
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fi
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if [ "$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}/24" out on "${IPv4dev}" to any > /dev/null
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sed -z "s/*nat\\n:POSTROUTING ACCEPT \\[0:0\\]\\n-I POSTROUTING -s ${pivpnNET}\\/24 -o ${IPv4dev} -j MASQUERADE\\nCOMMIT\\n\\n//" -i /etc/ufw/before.rules
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iptables -t nat -D POSTROUTING -s "${pivpnNET}/24" -o "${IPv4dev}" -j MASQUERADE
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ufw reload &> /dev/null
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elif [ "$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
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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}/24" -i "${IPv4dev}" -o "${pivpnDEV}" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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iptables -D FORWARD -s "${pivpnNET}/24" -i "${pivpnDEV}" -o "${IPv4dev}" -j ACCEPT
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fi
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iptables -t nat -D POSTROUTING -s "${pivpnNET}/24" -o "${IPv4dev}" -j MASQUERADE
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iptables-save > /etc/iptables/rules.v4
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fi
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# Disable IPv4 forwarding
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sed -i '/net.ipv4.ip_forward=1/c\#net.ipv4.ip_forward=1' /etc/sysctl.conf
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sysctl -p
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# Purge dependencies
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echo "::: Purge dependencies..."
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for i in "${TO_INSTALL[@]}"; 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" ]; then
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# On Debian and armv7l Raspbian, remove the unstable repo (on armv6l Raspbian
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# there is no wireguard package). On Ubuntu, remove the PPA.
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### FIXME: unconditionally rm'ing unstable.list isn't a good idea, it appears. What if someone else put it there manually?
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if [ "$PLAT" = "Debian" ] || { [ "$PLAT" = "Raspbian" ] && [ "$(uname -m)" = "armv7l" ]; }; then
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rm /etc/apt/sources.list.d/unstable.list
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rm /etc/apt/preferences.d/limit-unstable
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$PKG_MANAGER update &> /dev/null
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elif [ "$PLAT" = "Ubuntu" ]; then
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add-apt-repository ppa:wireguard/wireguard -r -y
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fi
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elif [ "${i}" = "wireguard-dkms" ]; then
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# On armv6l Raspbian we manually remove the kernel module and skip the apt
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# uninstallation (since it's not an actual package).
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if [ "$PLAT" = "Raspbian" ] && [ "$(uname -m)" = "armv6l" ]; then
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dkms remove wireguard/"${WG_SNAPSHOT}" --all
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rm -rf /usr/src/wireguard-*
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break
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fi
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elif [ "${i}" = "dirmngr" ]; then
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# If dirmngr was installed, then we had previously installed wireguard on armv7l Raspbian
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# so we remove the repository keys
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apt-key remove E1CF20DDFFE4B89E802658F1E0B11894F66AEC98 80D15823B7FD1561F9F7BCDDDC30D7C23CBBABEE &> /dev/null
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elif [ "${i}" = "unattended-upgrades" ]; then
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### REALLY???
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rm -rf /var/log/unattended-upgrades
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rm -rf /etc/apt/apt.conf.d/*periodic
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rm -rf /etc/apt/apt.conf.d/*unattended-upgrades
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elif [ "${i}" = "openvpn" ]; then
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deluser 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 $!; printf "done!\\n";
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echo ":::"
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# Removing pivpn files
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echo "::: Removing pivpn system files..."
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if [ -f /etc/dnsmasq.d/02-pivpn.conf ]; then
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rm -f /etc/dnsmasq.d/02-pivpn.conf
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pihole restartdns
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fi
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rm -rf /opt/pivpn
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rm -rf /etc/.pivpn
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rm -rf /etc/pivpn
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rm -f /var/log/*pivpn*
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rm -f /usr/local/bin/pivpn
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rm -f /etc/bash_completion.d/pivpn
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echo ":::"
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echo "::: Removing VPN configuration files..."
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if [ "$VPN" = "wireguard" ]; then
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rm -f /etc/wireguard/wg0.conf
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rm -f /etc/wireguard/configs
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rm -f /etc/wireguard/keys
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### FIXME SC2154
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rm -f "$install_home/configs"
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elif [ "$VPN" = "openvpn" ]; then
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rm -f /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 -f /etc/openvpn/easy-rsa
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rm -f "$install_home/ovpns"
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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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