#!/bin/bash

################################################################################################################################################
#
#	Title: DroidXTools
#	Author: Wolf Syntax (Jayson D. Alpe)
#	Desription: A tools for modifying MAC Address and DNS, a tool also for viewing WiFi saved password and creating backup of build.prop file
#	Instruction:
#
#		Download Terminal Emulator and DroidEdit
#		To execute this file: sh DroidXTools
#
#
#	(c) Wolf Syntax 2016. All rights reserved.
#
#
################################################################################################################################################


v=$1
root_dir=""
root_level=-1;
cur_dir=`pwd`
flag=0

#WiFi
wifi_mac=""
prod_info="productinfo/wifimac.txt"

nstat="data/system/netstats/"

#LoginDetails
usrname=""
passwrd=""
session_id=0


#Module for restarting device
shutdown()
{
	reboot;
}

#Module for checking if system directory exist
checkDir()
{
	if [[ -d "system" ]]; then
		flag=1;
	fi
}

#Module for getting Root level directory (Depth)
getRLevel()
{
	until [[ $flag -eq 1 ]]; do	#while flag is 0

		checkDir;
		cd ..
		let root_level++;	#increment while system dir not found
	done

	ctr=0
	while [[ $ctr -lt $root_level ]]; do
		root_dir="$root_dir../"
		let ctr++;
	done

}

#Module for Setting up DNS
setDNS()
{


	echo "======================================"
	echo "======== < DNS Changer Tool > ========"
	echo "======================================"
	echo -e "\nList of available DNS:"
	echo -e " \n1\tGoogle DNS\n2\tOpenDNS\n3\tLevel 3\n4\tComodo\n5\tNorton Connect Safe\n6\tSmartViper\n7\tFreeDNS\n8\tYandex\n9\tHurricane Electric\nC\tCustom DNS\n"

	options=0

	wlan_dns1=""
	wlan_dn2=""
	dns_type="";

	confirm="";

	echo -ne "Choose from the option: "
	read options

	bool=0;

	case $options in
	"1" ) wlan_dns1="8.8.8.8"; wlan_dns2="8.8.4.4";dns_type="Google DNS";;
	"2" ) wlan_dns1="208.67.222.222"; wlan_dns2="208.67.220.220";dns_type="OpenDNS";;
	"3" ) wlan_dns1="209.244."; wlan_dns2=""dns_type="Level 3";;
	"4" ) wlan_dns1="8.26.56.26"; wlan_dns2="8.20.247.20"; dns_type="Comodo";;
	"5" ) wlan_dns1="199.85.126.10"; wlan_dns2="199.85.127.10";dns_type="Norton Connect Safe";;
	"6" ) wlan_dns1="208.76.50.50"; wlan_dns2="208.76.51.51";dns_type="SmartViper";;
	"7" ) wlan_dns1="37.235.1.174"; wlan_dns2="37.235.1.177";dns_type="FreeDNS";;
	"8" ) wlan_dns1="77.88.8.8"; wlan_dns2="77.88.8.1";dns_type="Yandex";;
	"9" ) wlan_dns1="74.82.42.42"; wlan_dns2="74.82.42.42";dns_type="Hurricane Electric";;
	"C" ) checkCustomIP; dns_type="Custom DNS" bool=1;;
	*) echo "Invalid option!"; bool=1;;
	esac

	if [[ $bool -eq 0 ]]; then


		setprop dhcp.wlan0.dns1 $wlan_dns1;
		setprop dhcp.wlan0.dns2 $wlan_dns2;

		setprop net.dns1 $wlan_dns1;
		setprop net.dns2 $wlan_dns2;

		echo "Applying $dns_type successfully!";
	fi
}

#Set custom IP for DNS
checkCustomIP()
{
	dns_1=""
	dns_2=""

	echo -ne "Primary DNS: "
	read dns_1;

	echo -ne "Secondary DNS: "
	read dns_2;

	if [[ $dns_1 =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ && $dns_2 =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then

		OIFS=$IFS
		IFS='.'
		dns_1=($dns_1)
		IFS=$OIFS

		checker=0;

        	if [[ ${dns_1[0]} -le 255 && ${dns_1[1]} -le 255 && ${dns_1[2]} -le 255 && ${dns_1[3]} -le 255 ]]; then
			echo "Applying Primary Custom DNS";
			setprop dhcp.wlan0.dns1 $wlan_dns1;
			setprop net.dns1 $wlan_dns1;
		else

			echo "Primary DNS Invalid! i.e. 255.255.255.255"
		fi

		OIFS=$IFS
		IFS='.'
		dns_2=($dns_2)
		IFS=$OIFS


        if [[ ${dns_2[0]} -le 255 && ${dns_2[1]} -le 255 && ${dns_2[2]} -le 255 && ${dns_2[3]} -le 255 ]]; then
			echo "Applying Secondary Custom DNS";
			setprop dhcp.wlan0.dns2 $wlan_dns2;
			setprop net.dns2 $wlan_dns2;
		else
			echo "Invalid format! i.e. 255.255.255.255"
		fi

	else

		if [[ $dns_1 =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
			echo -ne ""
		else
			echo "Invalid Primary DNS"
		fi


		if [[ $dns_2 =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$  ]]; then
			echo -ne ""
		else
			echo "Invalid Secondary DNS"
		fi

	fi
}


#MAC Changer Module
setMAC()
{
	wifi_mac="$root_dir$prod_info"
	new_mac="00:00:00:00:00:00";
	cd $cur_dir
	echo "Current Directory: $cur_dir"
	#echo "Root DIR $root_dir"

	echo -ne "Enter custom MAC Address (BSSID) : "

	read new_mac

	if [[ $new_mac =~ ^[0-9a-fA-F]{2}\:[0-9a-fA-F]{2}\:[0-9a-fA-F]{2}\:[0-9a-fA-F]{2}\:[0-9a-fA-F]{2}\:[0-9a-fA-F]{2}$ ]]; then

		cd $root_dir
		echo "Creating backup of wifimac.txt"
		cp "productinfo/wifimac.txt" "$cur_dir/wifimac.txt"
		echo "$new_mac" > "productinfo/wifimac.txt"
		echo "MAC Address modified!"

	fi


}

#Create a backup of build.prop
cloneProp()
{
	cd $cur_dir
	cd $root_dir
	cd system
	echo "Cloning Build.prop to $cur_dir"
	cp build.prop $cur_dir

}


#Clear data usage module : Settings > Data Usage
clearData()
{
	cd $cur_dir
	echo -ne "Clearing Data Usage"
	cd $root_dir
	cd data/system/netstats/

	if [[ `ls -A` ]]; then
		rm *
	fi

	echo -ne " Successfully!\n"
}

#Module for displaying saved WiFi password
sniff()
{
	cd $cur_dir
	cd $root_dir
	cd data/misc/wifi
	echo "WiFi Password(s) "
	if [[ -f wpa_supplicant.conf ]]; then
		echo "WPA Security"
		cat wpa_supplicant.conf | grep psk
	fi

	if [[ -f wep_supplicant.conf ]]; then
		echo "WEP Security"
		cat wep_supplicant.conf | grep psk
	fi
}

#Login module
verify()
{

	echo -ne "Username: "
	read usrname

	echo -ne "Password: "
	read passwrd
	curr_dir=`pwd`
	if [[ $usrname == "root" && $passwrd == "toor" ]]; then
		echo "Login successful!"
		session_id=1
		if [[ $session_id -eq 1 ]]; then
			main;
		fi

		echo "$session_id" > session.log

	else
		echo "Invalid credentials"
		session_id=0
		echo "0" > session.log

	fi

}

#Module for displaying script version
version()
{
	echo "DroidXTools v1.0.3"
	echo "Developed by Wolf Syntax"
}
main()
{
#	echo "Main module"

	cur_dir=`pwd`
	clear
	getRLevel;
	echo -ne "\t\t DroidXTools\n\t\tversion 1.0.3\n\t   Developed by Wolf Syntax\n"
	echo -ne "================================================\n"
	echo -e "-build\tClone Build.prop\n-clear\tClear Data Usage\n-mac\tMAC Changer\n-wifi\tView WiFi Password\n-r\tReboot Device\n-v\tCheck Version\nexit\tClose session\n"
	proc="";
	echo -ne "================================================\n"
	echo "Note: Please grant as super user. command: su"
	echo -ne "Choose process: "
	read proc;

	case $proc in
	"-build" ) cloneProp;;
	"-clear" ) clearData;;
	"-mac" ) setMAC;;
	"-wifi" ) sniff;;
	"-r" ) shutdown;;
	"-v" ) version;;
	"exit" ) cd $cur_dir; echo "0" > session.log; exit;;
	* ) echo "Invalid option!";;
	esac
	cd $cur_dir
#	clearData

#	cloneProp;
#	setMAC;
#	setDNS;

}

if [[ -f session.log ]]; then
	session_id=$(< session.log);
	if [[ session_id -eq 0 ]]; then
		verify;
	else
		main;
	fi

else
	verify;
fi