#!/bin/bash
# $Header: /CVSROOT/public/scylla-charybdis/md5backup/bin/sc-loop.sh,v 1.2 2004/09/29 23:32:44 tino Exp $
#
# Loop over the backup script.
# Output and Input come from a terminal.
#
# The terminal is best a screen or ptybuffer.
# This way the backup can be commanded a little bit.
#
# The mysql root password must be stored with the "setpw"
# command on the first run.  It's not stored securely!
#
# $Log: sc-loop.sh,v $
# Revision 1.2  2004/09/29 23:32:44  tino
# many minor and mini fixes, sc-loop.sh should work again
#
# Revision 1.1  2004/09/28 21:01:39  tino
# added

cd /backup/charybdis || exit 1
umask 022

TIMEOUT="${1:-30000}"	# wait time arround 8:20 between backups
PWFILE="$2"
[ -z "$PWFILE" ] && PWFILE="`basename "$0" .sh`.pw"
HIDEPW="${3:-scramble}"

status()
{
echo "----------------------------------------------------------------"
ls -al md5move/*/.
echo "----------------------------------------------------------------"
cat tmp/log.md5move
echo "----------------------------------------------------------------"
df -k
echo "----------------------------------------------------------------"
tail -10 tmp/log
date +'%Y-%m-%d %H:%M:%S'
}

setpw()
{
rm -f "$PWFILE"
echo "$arg" |
openssl enc -e -des -a -k "$HIDEPW" -out "$PWFILE"
chmod 0400 "$PWFILE"
echo "password changed"
}

while	echo "================================================================"
	echo "== Backup loop: Waiting for timeout or command: help for help =="
	echo "================================================================"
do
	com=""
	read -rt 30000 com arg
	case "$com" in
	'')	;;
	help)	cat <<EOF
exit		exit loop
restart		restart backuploop
status		print some status
setpw		set mysql root password
(return)	start backup round
EOF
		continue;;
	exit)	exit;;
	restart)	exec "$0" "$@"; continue;;
	status)	status;		continue;;
	setpw)	setpw "$arg";	continue;;
	*)	echo "unknown command: $com"; continue;;
	esac
	if [ ! -f "$PWFILE" ]
	then
		echo "You have not set the mysql root password!"
		echo "Please do so with the command setpw."
		echo "Note that it's not stored securely!"
		continue
	fi
	openssl enc -d -des -a -in "$PWFILE" -k "$HIDEPW" |
	./sc-backup.sh &&
	status
done