#!/bin/sh

if [ ! -z "$1" ]
    then
        DCF=$1
    else
        /bin/echo "Syntax incorrect! Usage: dar2-backup dcf"
        exit 0
fi

STATUS=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF status)
if [ "$STATUS" != 'enabled' ]
    then
        exit 1
fi

# Backup variables
STIME=$(/bin/date)
DAR="/usr/bin/dar"
EXPIRY=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF Expiry)
ID=$(/sbin/e-smith/config get SystemName).$(/sbin/e-smith/config get DomainName)
MOUNT=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF Mount) ## /media/usbdisk or /mnt/dar2
TARGET=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF Target) ## //host/share
USERNAME=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF Username)
PASSWORD=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF Password)
VERBOSE=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF Verbose)
VFSTYPE=$(/sbin/e-smith/db /home/e-smith/db/dar2 getprop $DCF VFSType) ## man mount
TODAY=$(/bin/date +%Y.%m.%d)

/bin/umount $MOUNT >/dev/null 2>&1

# mount
if [ "$MOUNT" == "/mnt/dar2" ]
    then
	MOUNT=$MOUNT/$DCF
	# create mount dir
	if [ ! -d $MOUNT ]
	    then
        	/bin/echo "Creating $MOUNT dir"
	        /bin/mkdir -p $MOUNT || exit 2
	fi
	/bin/echo "Connecting $MOUNT to $TARGET"
        /bin/mount -t $VFSTYPE -o username=$USERNAME,password=$PASSWORD $TARGET $MOUNT || exit 3
     else
        /bin/echo "Connecting to $MOUNT"
        /bin/mount $MOUNT || exit 4
fi

# expand job template
/bin/echo "Expanding /etc/dar2/$DCF template"
if [ -e "/etc/dar2/$DCF" ]
   then
        /bin/rm -f /etc/dar2/$DCF || exit 5
fi
/sbin/e-smith/expand-template /etc/dar2/dar2-backup $DCF ; /bin/mv /etc/dar2/dar2-backup /etc/dar2/$DCF || exit 6

# create destination dir
if [ ! -d $MOUNT/$ID/$DCF ]
    then
        /bin/echo "Creating destination /$ID/$DCF dir"
        /bin/mkdir -p $MOUNT/$ID/$DCF || exit 7
fi

# zip and store db's
/bin/echo "Creating $MOUNT/$ID/$DCF/db.zip"
/usr/bin/zip -q -D $MOUNT/$ID/$DCF/db.zip /home/e-smith/db/*

# expire old backups
/bin/echo "Expiring old backups"
if [ "$EXPIRY" == "0" ]
   then
	/bin/rm -f $MOUNT/$ID/$DCF/*.dar
   else
	/usr/bin/find $MOUNT/$ID/$DCF/*.dar -type f -mtime +$EXPIRY -exec /bin/rm -f {} \; > /dev/null 2>&1 
fi

# execute pre-backup event
/bin/echo "Executing pre-backup event"
/sbin/e-smith/signal-event pre-backup || exit 8

# state verbose
if [ "$VERBOSE" == "on" ]
    then
	/bin/echo "Verbose logging is on"
    else
        /bin/echo "Verbose logging is off"
fi

# perform dar backup
/bin/echo "Performing $DCF backup"
$DAR -B /etc/dar2/$DCF -c $MOUNT/$ID/$DCF/$TODAY || exit 9

# list archives
/bin/echo ""
/bin/echo "Listing $DCF archives on target:"
/bin/ls -l $MOUNT/$ID/$DCF/ || 10

# disk space usage
/bin/echo ""
/bin/echo "Total target disk space usage:"
/bin/df -h $MOUNT || 11
/bin/echo ""

# execute post-backup event
/bin/echo "Executing post-backup event"
/sbin/e-smith/signal-event post-backup || exit 12

# create log file
if [ "$VERBOSE" == "on" ]
    then
    /bin/echo "Creating /var/log/dar2/$ID/$DCF/$TODAY.log"
    if [ ! -d /var/log/dar2/$ID/$DCF ]
	then
        /bin/mkdir -p /var/log/dar2/$ID/$DCF || exit 13
    fi
    $DAR -l $MOUNT/$ID/$DCF/$TODAY -as > /var/log/dar2/$ID/$DCF/$TODAY.log || exit 14
fi

# dismount
/bin/echo "Dismounting $MOUNT"
/bin/umount -l $MOUNT &

FTIME=$(/bin/date)
/bin/echo ""
/bin/echo "$STIME - backup started"
/bin/echo "$FTIME - backup finished"