#! /bin/sh

set -e

# Script used for non-privileged backup; the backup user must have sudo
# for this.

### Configuration -- change as needed.

#                  Steinar,  Trygve Tønnesland,  Skolmli
GPG_RECIPIENTS="-r 77978F76  -r 9AE75F05         -r 2DF56ABC"
EXCLUDEFROM=/home/samfundetbackup/.backup/exclude
### end of config ###

PATH=
HOME=/root
FILESYSTEM="$1"
LASTDATE="$2"

# Don't allow people to give odd options
if echo "$FILESYSTEM" | /bin/grep -Eq ^-; then
	echo Invalid filesystem. Exiting. 1>&2
	exit 1
fi
if [ x"$FILESYSTEM" = x"" ]; then
echo Missing filesystem. Exiting. 1>&2
	exit 1
fi

# Check if we have a valid date
if echo "$LASTDATE" | /bin/grep -Eq '^[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$'; then
        /usr/bin/nice -n 19 /usr/bin/ionice -c3 /bin/tar --ignore-failed-read --warning=no-file-changed --warning=no-file-ignored --one-file-system -c -C "$FILESYSTEM" --newer="$LASTDATE" --exclude-from="$EXCLUDEFROM" . | /usr/bin/pigz | /usr/bin/gpg --sign --encrypt --cipher-algo aes --compress-algo none $GPG_RECIPIENTS
else    
	/usr/bin/nice -n 19 /usr/bin/ionice -c3 /bin/tar --ignore-failed-read --warning=no-file-changed --warning=no-file-ignored --one-file-system -c -C "$FILESYSTEM" --exclude-from="$EXCLUDEFROM" . | /usr/bin/pigz | /usr/bin/gpg --sign --encrypt --cipher-algo aes --compress-algo none $GPG_RECIPIENTS
fi