From eba6edff6c9724a4d6178e3ebad3b99346f5618e Mon Sep 17 00:00:00 2001
From: Tobias Strobel <code@strobel.one>
Date: Wed, 29 Sep 2021 21:09:15 +0200
Subject: [PATCH] Add Nextcloud Backup to script

---
 helios/external-backup.sh | 90 +++++++++++++++++++++++++++++++++++----
 1 file changed, 81 insertions(+), 9 deletions(-)

diff --git a/helios/external-backup.sh b/helios/external-backup.sh
index 5193d66..095cb02 100644
--- a/helios/external-backup.sh
+++ b/helios/external-backup.sh
@@ -9,9 +9,6 @@
 #
 
 LOGFILE="$(mktemp)"
-GOTIFYURL="https://push.strobeto.de/message?token=Anks7VaBnyf7jCB"
-HCURL="https://hc.strobeto.de/ping/615c0b9b-077d-46b4-913b-b70d911dab27"
-
 SERVER="$(hostname)"
 
 # ### Konfiguration
@@ -22,9 +19,6 @@ HDMINFREE=90
 # Welcher Pfad soll gesichert werden?
 SRC_PATH=/
 
-# Unter welchem Pfad wird gesichert?
-DATA_PATH=/mnt/backupone
-
 setLED () {
 	# Set LED status
 	echo heartbeat > "/sys/class/leds/helios64:blue:usb3/trigger"
@@ -76,7 +70,7 @@ notify () {
 		;;
 		error)
 			NOTIFY_TITLE+="Backup has ERRORS"
-			NOTIFY_MESSAGE="Exit code $STATUSCODE. See logs attached to healthchecks for more information."
+			NOTIFY_MESSAGE="Exit code $2. See logs attached to healthchecks for more information."
 			NOTIFY_PRIORITY=8
 		;;		
 		*)
@@ -104,6 +98,34 @@ fi
 }
 
 basicChecks () {
+	CONFFILE=~/.config/externalbackup.conf
+
+	if ! [ -f $CONFFILE ] ; then
+		cat >>$CONFFILE <<EOF
+# GOTIFYURL="https://push.domain.tld/message?token=MYSECRETTOKEN"
+GOTIFYURL=""
+# HCURL="https://ping.domain.tld/ping/aaaaaaaa-bbbb-cccc-dddddddddddd"
+HCURL=""
+EOF
+	fi
+
+	source $CONFFILE
+
+	if [ -z $GOTIFYURL ] || [ -z $HCURL ] ; then
+		echo "Fatal: GOTIFYURL and HCURL must be set in $CONFFILE. Please edit the file and set correct values, then try again."
+		exit 1
+	fi
+
+	if [ -z "$1" ] ; then
+		echo "A hdd name to backup to must be given as first parameter! (E.g. backupone, for /mnt/backupone)"
+		notify custom "NO_HDD_NAME_GIVEN" "FATAL" "No hdd name given to backup to. (E.g. backupone, for /mnt/backupone)"
+		exit 1
+	fi
+	HDDNAME="${1}"
+
+	# Unter welchem Pfad wird gesichert?
+	DATA_PATH="/mnt/${HDDNAME}"
+
 	if ! [ -d $DATA_PATH ] ; then
 		echo "Fatal: Data path does not exist: $DATA_PATH"
 		healthchecksFinish fail
@@ -156,11 +178,61 @@ rotate () {
 	echo "Finished rotating backups of $SERVER..."
 }
 
+backupNC () {
+	NCDIR="/var/www/nextcloud"
+	NCOCC="sudo -u www-data php $NCDIR/occ"
+	NCDATADIR="$($NCOCC config:system:get datadirectory)"
+	NCDUMPSDIR="$NCDATADIR/sqldumps"
+	DBPASSWORD="$($NCOCC config:system:get dbpassword)"
+	DBNAME="$($NCOCC config:system:get dbname)"
+	DBHOST="$($NCOCC config:system:get dbhost)"
+	DBUSER="$($NCOCC config:system:get dbuser)"
+	DELETEDAYS=15
+
+	if [ ! -f "$NCDIR/config/config.php" ]; then
+	  echo "WARN: Nextcloud config not found! Skip Nextcloud backup..."
+	  notify custom "NC_CONFIG_NOT_FOUND" "WARN" "Nextcloud config not found! Skip Nextcloud backup..."
+	  return 1
+	fi
+
+	mkdir -p $NCDUMPSDIR
+	find $NCDUMPSDIR/nextcloud-sqlbkp_* -maxdepth 0 -mmin +$(($DELETEDAYS*60*24)) -exec rm -rvf {} \; > 2&>1
+
+	echo "Starting nextcloud backup..."
+	$NCOCC maintenance:mode --on
+
+	echo "Backup Nextcloud DB"
+	PGPASSWORD=$DBPASSWORD pg_dump $DBNAME -h $DBHOST -U $DBUSER -f "$NCDUMPSDIR/nextcloud-sqlbkp_`date +"%Y-%m-%d-%H-%M-%S"`.bak"
+
+
+	echo "Backup $NCDATADIR"
+	rsync  -aAXHh --stats --numeric-ids --noatime --delete --delete-excluded $NCDATADIR/ $DATA_PATH/"$SERVER"/daily.0$NCDATADIR
+			
+	STATUSCODE=$?
+	
+	# Rückgabewert prüfen.
+	# 0 = fehlerfrei, 
+	# 24 ist harmlos; tritt auf, wenn während der Laufzeit
+	# von rsync noch (/tmp?) Dateien verändert oder gelöscht wurden.
+	# Alles andere ist fatal -- siehe man (1) rsync
+	if [ "$STATUSCODE" -ne 24 ] && [ "$STATUSCODE" -ne 0 ] ; then
+		echo "Fatal: rsync for Nextcloud finished on $SERVER with errors!"
+		healthchecksFinish "$STATUSCODE"
+		notify error "$STATUSCODE"
+		$NCOCC maintenance:mode --off
+		exit "$STATUSCODE"
+	fi
+	echo "Finished nextcloud backup..."
+	$NCOCC maintenance:mode --off
+}
+
 backup () {
+	backupNC
+
 	echo "Starting rsync backup from $SERVER..."
 
 	rsync  -aAXHh --stats --numeric-ids --noatime --delete --delete-excluded   \
-		--include={"/mnt/storage","/mnt/storage/nc_data**","/mnt/storage/media**","/mnt/storage/backup**"} \
+		--include={"/mnt/storage","/mnt/storage/media**","/mnt/storage/backup**"} \
 		--exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found","/.snapshots"} \
 		$SRC_PATH $DATA_PATH/"$SERVER"/daily.0
 			
@@ -188,10 +260,10 @@ backup () {
 exec > >(tee -i "${LOGFILE}")
 exec 2>&1
 
+basicChecks ${1}
 healthchecksStart
 notify start
 setLED
-basicChecks
 backup
 rotate
 healthchecksFinish