#!/bin/bash
# MGET.SH (script by Jaky, 2010):  FTP Folder Sync & Verify + Delete | op. logging in /var/log/mget.log

hostname=ftp.site.com
username=USER1
password=XXXXX
SRC_DIR="Downloads"
MOUNT_DEV="//192.168.111.222/codespring"
MOUNT_POINT="/datastore"
DEST_DIR="/datastore/Projects/USER1/Downloads/"
LOGFILE="/var/log/mget.log"
LSTFILE="/home/jaky/files.lst"
set $(date)
DATETIME="$2/$3/$6:$4"

function mount_partition(){
    if [ -d "${DEST_DIR}" ] ; then
      echo -e "* Mount '${MOUNT_POINT}'  exists...Continuing...." >> $LOGFILE 
    else
        mount $MOUNT_DEV
	RESULT=$?
	if [ $RESULT -ne 0 ] ; then #if result = 32 (allready exists) you can let go ...
	    if [ $RESULT -ne 32 ] ; then
		echo -e "* Aborted actions: mount returned code: ${RESULT} for 'mount ${MOUNT_DEV} ${MOUNT_POINT}' *" >> $LOGFILE
		exit 1
	    fi
	fi
      echo -e "* Mounting: '${MOUNT_DEV}' -> '${MOUNT_POINT}' ..." >> $LOGFILE
    fi
}

function unmount_partition() {
  umount -l $MOUNT_POINT
  RESULT=$?
  if [ $RESULT -ne 0 ] ; then
    echo -e "* Warning!  umount returned code: ${RESULT} for umount -l ${MOUNT_POINT} *" >> $LOGFILE #| mail -s "Warn:unmount" eamiladdr
    exit 1
   fi
  echo -e "* Lazy Unmounting: '${MOUNT_DEV}' -> '${MOUNT_POINT}' ..." >> $LOGFILE
  return
}

echo -e  "\nMaking a FILE-LIST (priv, user, size, fname..) from the FTP Source Folder..\n"
ftp -n -i <<_EOF_
open $hostname
user $username $password
bin
cd $SRC_DIR
ls * $LSTFILE
quit
_EOF_
if test -f $LSTFILE ; then 
  echo -e "\n* '${0}' connected to remote server '${hostname}'  [ $DATETIME ].."  >> $LOGFILE
 fi 

if test -s $LSTFILE ; then  #  if LSTFILE size > 0  -->   we have at least one file on source
  echo "* File-list on remote server ( ${hostname}/$SRC_DIR ): *" >> $LOGFILE
  cat $LSTFILE >> $LOGFILE
  echo  -e "There are files on FTP SRC_DIR --> MOUNT the DEST_DIR  &  MGET all the files there from SRC_DIR\n"
  mount_partition
ftp -n -i <<_EOF_
open $hostname
user $username $password
bin
cd $SRC_DIR
lcd $DEST_DIR
mget *
quit
_EOF_

echo  -e "Checking if downloaded files size matches the fsize on the FTP..\n If Equal ->  delete them from the FTP server\n"
 while read SLINE
  do
   fsize=`echo $SLINE | awk '{ print $5 }'`
   fname=`echo $SLINE | awk '{ print $9 }'`
   if test -f $DEST_DIR/$fname ; then
     lfsize=`ls -l $DEST_DIR/$fname | awk '{ print $5 }'`
     echo "local_file_size[${fname}]=${lfsize} bytes"
     if [ $fsize -eq $lfsize ] ; then
ftp -n -i <<_EOF_
open $hostname
user $username $password
bin
cd $SRC_DIR
delete $fname
quit
_EOF_
    else #  if  ${fsize} !=  ${lfsize} 
echo -e "* Warning: local_fsize[${fname}]=${lfsize}bytes <> remote_fsize[${fname}]=${fsize} bytes, Download restarted.. *" >> $LOGFILE
ftp -n -i <<_EOF_
open $hostname
user $username $password
bin
cd $SRC_DIR
lcd $DEST_DIR
get $fname
quit
_EOF_
    fi   
  fi
   echo -e "Remote_ftp_fsize[${fname}]=${fsize} bytes\n"
done < $LSTFILE  # DONE the While cycle checking
 set $(date)
 echo -e "* Files downloaded succesfuly [ $2/$3/$6:$4 ] ! *" >> $LOGFILE
 unmount_partition
else 
 echo -e "* Folder  '${hostname}/$SRC_DIR'  is empty ! *\n" >> $LOGFILE
fi  # if test -s files.lst ..