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pivpn/scripts/backup.sh

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#!/bin/bash
# PiVPN: Backup Script
# Find the rows and columns. Will default to 80x24 if it can not be detected.
screen_size=$(stty size 2>/dev/null || echo 24 80)
rows=$(echo "$screen_size" | awk '{print $1}')
columns=$(echo "$screen_size" | awk '{print $2}')
# Divide by two so the dialogs take up half of the screen, which looks nice.
r=$(( rows / 2 ))
c=$(( columns / 2 ))
# Unless the screen is tiny
r=$(( r < 20 ? 20 : r ))
c=$(( c < 70 ? 70 : c ))
backupdir=pivpnbackup
date=$(date +%Y%m%d-%H%M%S)
setupVarsFile="setupVars.conf"
setupConfigDir="/etc/pivpn"
if [ -r "${setupConfigDir}/wireguard/${setupVarsFile}" ] && [ -r "${setupConfigDir}/openvpn/${setupVarsFile}" ]; then
# Two protocols have been installed, check if the script has passed
# an argument, otherwise ask the user which one he wants to remove
if [ $# -ge 1 ]; then
VPN="$1"
echo "::: Backing up VPN: $VPN"
else
chooseVPNCmd=(whiptail --backtitle "Setup PiVPN" --title "Backup" --separate-output --radiolist "Both OpenVPN and WireGuard are installed, choose a VPN to backup (press space to select):" "${r}" "${c}" 2)
VPNChooseOptions=(WireGuard "" on
OpenVPN "" off)
if VPN=$("${chooseVPNCmd[@]}" "${VPNChooseOptions[@]}" 2>&1 >/dev/tty) ; then
echo "::: Backing up VPN: $VPN"
VPN="${VPN,,}"
else
echo "::: Cancel selected, exiting...."
exit 1
fi
fi
setupVars="${setupConfigDir}/${VPN}/${setupVarsFile}"
else
if [ -r "${setupConfigDir}/wireguard/${setupVarsFile}" ]; then
setupVars="${setupConfigDir}/wireguard/${setupVarsFile}"
elif [ -r "${setupConfigDir}/openvpn/${setupVarsFile}" ]; then
setupVars="${setupConfigDir}/openvpn/${setupVarsFile}"
fi
fi
if [ ! -f "${setupVars}" ]; then
echo "::: Missing setup vars file!"
exit 1
fi
# shellcheck disable=SC1090
source "${setupVars}"
checkbackupdir(){
if [[ ! -d $install_home/$backupdir ]]; then
mkdir -p "$install_home"/"$backupdir"
fi
}
backup_openvpn(){
openvpndir=/etc/openvpn
ovpnsdir=${install_home}/ovpns
checkbackupdir
backupzip=$date-pivpnovpnbackup.tgz
# shellcheck disable=SC2210
tar czpf "$install_home"/"$backupdir"/"$backupzip" "$openvpndir" "$ovpnsdir" > /dev/null 2>&1
echo -e "Backup created in $install_home/$backupdir/$backupzip \nTo restore the backup, follow instructions at:\nhttps://github.com/pivpn/pivpn/wiki/OpenVPN#how-can-i-migrate-my-configs-to-another-pivpn-instance"
}
backup_wireguard(){
wireguarddir=/etc/wireguard
configsdir=${install_home}/configs
checkbackupdir
backupzip=$date-pivpnwgbackup.tgz
tar czpf "$install_home"/"$backupdir"/"$backupzip" "$wireguarddir" "$configsdir" > /dev/null 2>&1
echo -e "Backup created in $install_home/$backupdir/$backupzip \nTo restore the backup, follow instructions at:\nhttps://github.com/pivpn/pivpn/wiki/WireGuard#how-can-i-migrate-my-configs-to-another-pivpn-instance"
}
if [[ ! $EUID -eq 0 ]];then
if [[ $(dpkg-query -s sudo) ]];then
export SUDO="sudo"
else
echo "::: Please install sudo or run this as root."
exit 1
fi
fi
if [[ "${VPN}" == "wireguard" ]]; then
backup_wireguard
else
backup_openvpn
fi