#!/bin/sh

## Script for NH-Opti160 to take a backup of pihole configuration, for nanopineo (or other alternate pihole servers) to pick up over SSH on a scheduled task.
## Author: iRaven

## CONFIGURATION OPTIONS BELOW ##

# low-privileged user info
PHTRANSUSR=phtrans
PHTRANSPWD=nope!

## END configuration options ##

if [[ $EUID > 0 ]]; then
  echo "Not running as root, exiting"
  exit
fi

## Make the user if it doesc't exist.
## We're assuming you have a low-privileged user set up for other pihole systems to retrieve the backup file.
## This gets configured automatically the first time you run this (below), or you can configure this yourself. Don't give it any permissions.
if [ ! -d "/home/${PHTRANSUSR}" ]; then
  useradd -m -p ${PHTRANSPWD} ${PHTRANSUSR}
  ssh-keygen -C "piholetransfer" -f /home/${PHTRANSUSR}/.ssh/id_rsa
  chown -R ${PHTRANSUSR} /home/${PHTRANSUSR}/
fi

## Backup pi-hole FTL DB
pihole -a -t /home/${PHTRANSUSR}/phbackup.tar.gz

## Copy any custom shit in dnsmasq's config directory to the user, too.
cp -v /etc/dnsmasq.d/* /home/${PHTRANSUSR}