#!/bin/sh
# vim: autoindent ts=4 cindent expandtab
# =============================================================================
#
#  ftp-push-backup.sh (2005-06-22)
#
#  $Id: ftp-push-backup.sh.txt,v 1.1 2005/06/22 12:45:58 xaphod Exp $
#
#       - A script to push a file to an FTP server with support for
#         multiple, configurable, generations.
#
#  LICENCE: http://creativecommons.org/licenses/by-nc/2.5/
#
# =============================================================================

# Backup script
#  - if it's not there execution will continue
#  - it it is there it will be run in this context
#  - abort if errorlevel is non-zero after it's run
SCRIPT=/tmp/dothebackup.sh

# Source Filename
#  - the single file to backup
#  - can be created by BACKUP above
#  - abort if not there or size is zero
SOURCE=/tmp/thebackup.tgz

# Target Filename
#  - how the file is to be named after FTP upload
#  - most recent upload is called "BASENAME00.EXTENSION"
#  - oldest file is called "BASENAMExx.EXTENSION", 
#    where 'xx' is zero padded (VERSIONS - 1)
VERSIONS=5
BASENAME='backup'
EXTENSION='tgz'

# FTP Details
#  - Must be verified prior to use!
HOST="192.168.254.254"
USER="us3rn4m3"
PASS="p4ssw0rd"

##
## DO NOT edit past here (Unless you really do know what you're doing)
## ============================================================================
##

FTPPROG='ftp'
FTPARGS='-V -n'

PATH=/bin:/usr/bin

## If there is a SCRIPT, run it
if [ -f $SCRIPT ]; then
    . $SCRIPT
    if [ $? -ne 0 ]; then
        echo "$0:"
        echo "    Child script returned non-zero, ABORT!"
        echo "    SCRIPT: $SCRIPT"
        exit 1
    fi
else
fi

# Check the backup file exists
if [ ! -s $SOURCE ]; then
    echo "$0:"
    echo "    Source file does not exist or has no mass, ABORT!"
    echo "    SOURCE: $SOURCE"
    exit 1
fi

## Create the empty temp script
tempfoo=$( basename $0 )
TMPSOURCE=$( mktemp -q /tmp/$tempfoo-$$.XXXXXX )
if [ $? -ne 0 ]; then
    echo "$0:" 
    echo "    Can't create temp script, ABORT!"
    exit 1
fi

## Populate it
echo "$FTPPROG $FTPARGS $HOST <<END_SCRIPT 2>&1 > /dev/null" >> $TMPSOURCE
echo "quote USER $USER" >> $TMPSOURCE
echo "quote PASS $PASS" >> $TMPSOURCE
echo "binary" >> $TMPSOURCE

FN0=""
FN1=""
COUNT=$( expr \( $VERSIONS \) - 1 )
while [ $COUNT -ge 0 ]; do
    FN0=$FN1
    FN1=$( printf "$BASENAME%02s.tgz" $COUNT)
    if [ "$FN0" = "" ]; then
        echo delete $FN1 >> $TMPSOURCE
    elif [ $COUNT -ge 0 ]; then
        echo rename $FN1 $FN0 >> $TMPSOURCE
    fi
    if [ $COUNT -eq 0 ]; then
        echo put $SOURCE $FN1 >> $TMPSOURCE
    fi
    COUNT=$( expr \( $COUNT \) - 1 )
done

echo "END_SCRIPT" >> $TMPSOURCE

## Run the generated script
#cat $TMPSOURCE
. $TMPSOURCE
if [ $? -ne 0 ]; then
    echo "$0:"
    echo "    Temp script returned non-zero, ABORT!"
    echo "    TMPSOURCE: $TMPSOURCE"
    exit 1
fi

## Delete the generated script
rm -f $TMPSOURCE

## That's all Folks!
exit 0