#!/bin/bash
#
# Crear un directorio ej: /root/backup_script
# Copia el scrip en el directorio anterior
# Edita el script y rellena las variables
# Cambia permisos al script chmod 700 /root/backup_script/bscript
# Configura directorios, FTP, Email....
# OPCIONAL
# Copia el script a /etc/cron.weekly/ para ejecuciones semanales o a /etc/cron.daily para ejecuciones diarias
# Y vuelve a cambiarle los permisos como antes
#

### Otros
### Comprueba que exista gpg y lftp
###

### Si existe GPG
### Mira man gpg para crear tu clave privada y tu clave publica
### Importa la clave publica para inicar el backup
### gpg --import clavepublica

### IMPORTANTE
### Mas ayuda bscript --help  

ROOTDIR="/root/backup_script/"

### Directorios sugeridos ###
### /etc - Toda la configuracion
### /var/qmail/ - QMAIL Home
### /home/httpd/vhosts - SI es Plesk 7.5 o anterior
### /var/www/vhosts - si es Plesk 8

DIRS="/etc /home/mysqlbackup/daily /home/httpd/vhosts" ## AÑada directrios separados por espacios

### Configuracion FTP ###
FTPD="/" ###  Directorio
FTPU="USERNAME"  ### username
FTPP="PASSWORD" ### password
FTPS="IP-DEL-Servidor" ### IP

### GPG ###
GPGSTATUS="off" ## on / off
BACKUPKEYNAME="your_unique_key_name" ## LCave publica, si usas encriptacion
GPGPUBKEYRING="/root/.gnupg/pubring.gpg" ## Debe estar bien si has importado la clave
BACKUPNUMBER="3" ## Nuymero de archivos

### Otros ###
NOTIFICATION="yes" ## si / no
EMAILID="email@dominio.tld" ### Email


####################################################
########## No Seguir Editando Desde aqui ###########
####################################################

###	Some other stuff, edit only if you know what you do	###
TMPFILE=$TEMPDIR"tmp.txt"
TEMPDIR=$ROOTDIR"tmp/"
RESTOREDIR=$ROOTDIR"restore/"
BACKUP=$TEMPDIR"backup.$$"
NOW=$(date +"%Y%m%d-%H%M")

###	FUNCTIONS	###
## root user cheking for security reasons
check_root() {
   if [ "$UID" != "0" ]; then
      echo "You must be root to run this script!"
      exit 0
   fi
}

## Mail sending module
start_mail(){

if [ "$NOTIFICATION" == "si" ]; then
 T=/tmp/backup.fail
 echo "Date: $(date)">$T
 echo "Hostname: $(hostname)" >>$T
 echo "Remote hostname: $FTPS" >>$T
 echo "Folders: $DIRS" >>$T
 echo "Put to: $FTPD" >>$T

 mail  -s "Backup START $(hostname) to $FTPS" "$EMAILID" <$T
 rm -f $T
fi

}

## FTP Client module 
delete_remote_backups(){

lftp $FTPS<<EOF | sort -r >$TMPFILE
user "$FTPU" "$FTPP"
cd $FTPD
cls "BACKUP_""$(hostname | tr . _ )_*"
quit
EOF

TOTALLINES=`wc -l $TMPFILE | sed "s/^ *//g" | cut -f 1 -d " "`
let "LEFTLINES=$TOTALLINES-$BACKUPNUMBER";

if [ "$BACKUPNUMBER" -lt "$TOTALLINES" ]; then

BUFFER="user ""$FTPU"" ""$FTPP";
BUFFER="$BUFFER \ncd $FTPD";

for line in `tail -n $LEFTLINES $TMPFILE`
do
BUFFER="$BUFFER \nrm $line";
done

BUFFER="$BUFFER \nquit";

rm -f $TMPFILE

#Start FTP backup using lftp
echo -e $BUFFER | lftp $FTPS
fi

}

## Will work this module local, tar etc.
local_temporary_backup(){

### Start Backup for file system ###
[ ! -d $BACKUP ] && mkdir -p $BACKUP || :

### See if we want to make a full backup ###
FILE="BACKUP_""$(hostname | tr . _ )_"$NOW".tar.gz"

if [ "$GPGSTATUS" == "off" ]; then
tar -zcf $BACKUP/$FILE $DIRS 2> /dev/null 
else
FILE="$FILE.gpg"
tar -zc $DIRS  2> /dev/null | gpg --keyring "$GPGPUBKEYRING" --always-trust -z 0 -e -r "$BACKUPKEYNAME" > "$BACKUP/$FILE"
fi

FILESIZE=`du -h "$BACKUP/$FILE" | cut -f1`

}

## Will put file to remote server
ftp_dump(){

### Dump backup using FTP ###
#Start FTP backup using lftp
lftp $FTPS<<EOF
user "$FTPU" "$FTPP"
cd $FTPD
lcd $BACKUP
mput *
quit
EOF

### Find out if ftp backup failed or not ###
if [ "$?" == "0" ]; then
 rm -f $BACKUP/*
 if [ "$NOTIFICATION" == "yes" ]; then
  T=/tmp/backup.fail
  echo "Date: $(date)">$T
  echo "Hostname: $(hostname)" >>$T
  echo "Remote hostname: $FTPS" >>$T
  echo "Folders: $DIRS" >>$T
  echo "Put to: $FTPD" >>$T
  echo "Size of $FILE = $FILESIZE bytes." >>$T

  mail  -s "Backup END $(hostname) to $FTPS SUCCESS" "$EMAILID" <$T
  rm -f $T
 fi
else
  T=/tmp/backup.fail
  echo "Date: $(date)">$T
  echo "Hostname: $(hostname)" >>$T
  echo "Remote hostname: $FTPS" >>$T
  echo "Folders: $DIRS" >>$T
  echo "Put to: $FTPD" >>$T
  echo "Operation failed" >>$T

  mail  -s "Backup END $(hostname) to $FTPS FAILED" "$EMAILID" <$T
  rm -f $T

fi

rmdir --ignore-fail-on-non-empty $BACKUP

}

## Restore backup from server
restore_backup(){

###	RESTORE DIR	###
[ ! -d $RESTOREDIR ] && mkdir -p $RESTOREDIR || :


if [ -n "$1" ]; then

BUFFER="user ""$FTPU"" ""$FTPP";
BUFFER="$BUFFER \ncd $FTPD";
BUFFER="$BUFFER \n lcd "$RESTOREDIR
BUFFER="$BUFFER \n mget "$1;
BUFFER="$BUFFER \nquit";
rm -f $TMPFILE

#Start FTP restore using lftp
echo -e $BUFFER | lftp $FTPS 

else

lftp $FTPS<<EOF | sort >$TMPFILE
user "$FTPU" "$FTPP"
cd $FTPD
cls "BACKUP_""$(hostname | tr . _ )_*"
quit
EOF

TOTALLINES=`wc -l $TMPFILE | sed "s/^ *//g" | cut -f 1 -d " "`


	if [ $TOTALLINES  -eq  0 ]; then
		echo "NO file to restore!"
		exit;
	else

		BUFFER="user ""$FTPU"" ""$FTPP";
		BUFFER="$BUFFER \ncd $FTPD";
		BUFFER="$BUFFER \n lcd "$RESTOREDIR
		BUFFER="$BUFFER \n mget "$(tail -n 1 $TMPFILE);
		BUFFER="$BUFFER \nquit";
		rm -f $TMPFILE

		#Start FTP restore using lftp
		echo -e $BUFFER | lftp $FTPS

	fi
fi
}

## Will ask for report from remote FTP
report_remote(){

lftp $FTPS<<EOF | sort -r>$TMPFILE
user "$FTPU" "$FTPP"
cd $FTPD
cls "BACKUP_""$(hostname | tr . _ )_*"
quit
EOF

TOTALLINES=`wc -l $TMPFILE | sed "s/^ *//g" | cut -f 1 -d " "`

if [ $TOTALLINES  -eq  0 ]; then
                echo "NO files on the remote server!"
                exit;
else

echo "The available files for restorring:"  
cat $TMPFILE
echo "";

lftp $FTPS<<EOF | sort>$TMPFILE
user "$FTPU" "$FTPP"
cd $FTPD
ls "BACKUP_*"
quit
EOF

TOTAL=`awk '{ sum += $5; } END { print sum/1048576; }' < $TMPFILE`
rm -f $TMPFILE

echo "Total size in folder: "$TOTAL" MB" 

fi

}

###	END FUNTIONS	###
 
## Perform the root checking

check_root

###	tempdir	###
[ ! -d $TEMPDIR ] && mkdir -p $TEMPDIR || :


case "$1" in
--backup)

### STARTING MAIL  ###
start_mail

### CHECK FOR FTP DELETE   ###
delete_remote_backups

###	LOCAL BACKUP	###
local_temporary_backup

###	FTP DUMP	###
ftp_dump

;;
--restore)
restore_backup $2

;;
--report)
report_remote

;;

--help)
echo "--backup		: inicia el backup de tu servidor al remoto"
echo "--restore	[nombre_archivo]	: Recupera un archivo del servidor remoto"
echo "				  si no se especifica archivo se recupera el ultimo"
echo "--report		: Muestra los archivos en backup"
echo "--help 		: muestra este mensaje "
;;
*)
   echo "Error"
   echo "Usa --help para ver la ayuda"
   ;;
esac

exit;