mirror of
https://github.com/pivpn/pivpn.git
synced 2024-10-18 13:43:32 +00:00
a561607272
Handle running the install script over an existing installation (as the script already did before branching to test-wireguard), providing:
- Update, downloads latest scripts from git repo
- Repair, reinstall PiVPN while keeping existing settings
- Reconfigure, start over overwriting the existing settings
Tag iptables rules as an attempt to make sure that the uninstall script only removes PiVPN rules
Change the armv6l installation to reflect the split of WireGuard snapshots into wireguard-linux-compat and wireguard-tools
229 lines
7.5 KiB
Bash
Executable file
229 lines
7.5 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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subnetClass="24"
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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}/${subnetClass}" out on "${IPv4dev}" to any > /dev/null
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sed -z "s/*nat\\n:POSTROUTING ACCEPT \\[0:0\\]\\n-I POSTROUTING -s ${pivpnNET}\\/${subnetClass} -o ${IPv4dev} -j MASQUERADE -m comment --comment ${VPN}-nat-rule\\nCOMMIT\\n\\n//" -i /etc/ufw/before.rules
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iptables -t nat -D POSTROUTING -s "${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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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/"${WG_MODULE_SNAPSHOT}" --all
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rm -rf /usr/src/wireguard-"${WG_MODULE_SNAPSHOT}"
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break
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fi
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elif [ "${i}" = "wireguard-tools" ]; then
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if [ "$PLAT" = "Raspbian" ] && [ "$(uname -m)" = "armv6l" ]; then
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rm -rf /usr/src/wireguard-tools-"${WG_TOOLS_SNAPSHOT}"
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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 -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 "$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.dev | 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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