#!/bin/bash
###########################################
# Backup a Raspberry Pi to CIFS share
###########################################
# autor : Neives
VERSION="2017.12.13"
# licence type	: Creative Commons Attribution-NoDerivatives 4.0 (International)
# licence info	: http://creativecommons.org/licenses/by-nd/4.0/
###########################################

### VARIAVEIS ###
DESTINO="//10.0.0.245/NAS/Backup_HA"
DESTINOMNT="/mnt/cifs/synology"
DESTINONOME="CIFS NAS Synology"
USERNAME="admin"
PASSWORD="n2311984"
### FIM DAS VARIAVEIS ###

# __________________ NAO MODIFICAR NADA ABAIXO DESTA LINHA __________________ #

DATE=$(date +%Y-%m-%d_%Hh%M)
TAR=$(hostname -s)"-${DATE}.tar.gz"

ipserver=`ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1  -d'/'`
locpath=`dirname "${BASH_SOURCE[0]}"` 	# caminho do script
scriptpath=`basename $0`				# script.sh

bold=$(tput bold)
underline=$(tput sgr 0 1)
reset=$(tput sgr0)

rouge=$(	tput setaf 1)
vert=$(		tput setaf 2)
jaune=$(	tput setaf 3)
bleu=$(		tput setaf 4)
violet=$(	tput setaf 5)
cyan=$(		tput setaf 6)
gris=$(		tput setaf 7)

# Funcoes
shw_norm () { echo -en "${bold}$(tput setaf 9)${@}${reset}";	}
shw_info () { echo -en "${bold}${cyan}${@}${reset}";		}
shw_OK ()   { echo -en "${bold}${vert}OK!${@}${reset}";		}
shw_warn () { echo -en "${bold}${violet}${@}${reset}";		}
shw_err ()  { echo -en "${bold}${rouge}${@}${reset}";		}
gris() 	    { echo -en "${bold}${gris}${@}${reset}";		}
header()    { echo -e "${bold}${jaune}$*${reset}";		}
headerU()   { echo -e "${underline}${bold}${jaune}$*${reset}";  }

# Inicio do script
clear && echo -e "\n\n"
header  "****************************************************************************"
header  "***   bm-PiBackup by @xhark - Creative Commons BY-ND 4.0 (v${VERSION})   ***"
headerU "****************************************************************************"

shw_info "\n\n=== Arranque do backup Raspberry Pi em $(date +'%d/%m/%Y a %Hh%M'):\n\n"

# Verificacao de execucao como 'root'
shw_norm "\t::: A executar como root... "
if [[ $EUID -ne 0 ]]; then
	sudo "$0" "$@" || (shw_err "Este script deve ser executado com permissoes 'root'. A parar o script.\n" ; exit 1)
else
	shw_OK
fi

# Verificacao do destino
shw_norm "\n\t::: Verificacao do destino ($DESTINONOME)... "
if grep -qs $DESTINOMNT /proc/mounts; then
	shw_OK
else
	# Mount drive de rede se não existir
	[ -d $DESTINOMNT ] || mkdir -p $DESTINOMNT
	# Ligacao ao DESTINO Syno
	mount.cifs $DESTINO $DESTINOMNT -o user=${USERNAME},pass="${PASSWORD}" && shw_OK
	if [[ $? -ne 0 ]]; then
		shw_err "\n\t ERRO: Ligação impossivel $DESTINO -- A parar o script \n"
		exit 1
	fi
fi

# Listagem do backup cron
for user in $(cut -f1 -d: /etc/passwd); do echo -e "\n\n==> $user:" ; crontab -u $user -l ;  done > /tmp/crontab 2>&1

cd $DESTINOMNT || (shw_err "\n\t ERRO: cd impossivel"; exit 1)

# criacao do arquivo
shw_norm "\n\t::: Criacao do arquivo ${TAR}... "
# Listagem de pastas para efectuar backup. Uma linha por ficheiro/pasta.
tar zcf "$TAR" \
	/boot/*.txt			\
	/etc/cron.daily 		\
	/etc/cron.hourly 		\
	/etc/cron.monthly 		\
	/etc/fstab			\
	/etc/init.d			\
	/etc/network/interfaces 	\
	/etc/modules			\
	/etc/modprobe.d/		\
	/etc/ssh/sshd_config		\
	/etc/udev			\
	/etc/wpa_supplicant		\
	/home/pi 			\
	/home/homeassistant 			\
	/root/*.sh*			\
	/root/.bash*			\
	/root/bash_xhark		\
	/var/www 			\
	/tmp/crontab  			\
	--exclude '/home/pi/.node-*'	\
	> /dev/null 2>&1

tarsize=$(du -sh "$TAR")

if [[ $? -ne 0 ]]; then
	shw_err "\n\t ERRO: Impossivel criar ficheiro $TAR \n"
	umount -l $DESTINOMNT && shw_warn "\n\t Desligar DESTINO e parar o script!"
	exit 1
fi
shw_OK

# Desligar drive rede
shw_norm "\n\t::: Desligar DESTINO... "
if umount -l $DESTINOMNT; then
        shw_OK
else
	shw_err "IMPOSSIVEL!"
fi

gris "\n\n\t=> Tamanho do backup: $tarsize"

shw_info "\n\n=== Fim do Backup de $(date +'%d/%m/%Y as %Hh%M')"
shw_info "\n=== Script executado a partir de ${ipserver}:${locpath}/${scriptpath}\n\n"

# Limpeza de ficheiros temporarios
rm -f /tmp/crontab

#Criacao de ficheiro com data

cd /home/pi/backup/

rm last_backup_date.txt
echo $(date +'%d-%m-%Y, %H:%M') > last_backup_date.txt

#rm last_backup_hour.txt
#echo $(date +%H:%M) > last_backup_hour.txt

#rm last_backup_size.txt
#echo "$tarsize" > last_backup_size.txt

exit 0