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

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

const char bios_head[32]=
{
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x5A,0xA5,0xF0,0x0F,0x03,0x00,0x04,0x03,0x06,0x02,0x10,0x15,0x20,0x01,0x21,0x00
};
char buff[1024*1000*16];
char id[32];

char chack_str(const char *a,char *b,int len)
{
	int c;
	for(c=0;c<len;c++)
	{
		if(a[c]!=b[c])
		{
			return 1;
		}
	}
	return 0;
}

void tryunlock(char *dir)
{
	FILE *bios=NULL;
	bios=fopen(dir,"rb");
	if(bios==NULL)
	{
		printf("ERROR. can't Open file ..\n");
	}else
	{
		fread(id,32,1,bios);
		if(chack_str(bios_head,id,32))
		{
			printf("ERROR. Not Bios File\n");
		}else
		{
			printf("try it..\n");
		}
		
	}
}
	
int main(int argc, char *argv[])
{
	printf("ThinkPad Bios unlock..v0.1\n");
	int a;
	FILE *unlock_bios = NULL;	
	unlock_bios=fopen("./X250.bbb","rb");
	if(unlock_bios==NULL)
	{
		printf("ERROR_NOTFUND_THE_BIOS_FILE\n");
		return -1;
	}
	fread(buff,1024*1000*16,1,unlock_bios);
	if(argc>1)
	{
		while(argc>1)
		{
		
			argc--;
			printf("Input flie %s\n",argv[argc]);
			tryunlock(argv[argc]);
		}
		printf("\n");
	}else
	{
		printf("联想ThinkPad Bios超级密码解锁程序\n\n使用方法：\n");
		printf("1 使用编程器将原机Bios读出\n");
		printf("2 将读出的内容以二进制格式bin保存\n");
		printf("3 将bin文件拖进本程序，程序会自动生成解锁Bios，（支持批量拖入）\n");  
		printf("4 将生成的解锁bios刷入，然后开机，按F1进入Bios，将超级密码改成空密码，按F10保存\n");
		printf("5 完成！ 注意，部分Bios芯片写入之前要先清空，否则无法校验通过。\n\n\n");
		printf("编写 吴文峰 邮箱 kevin@lmve.net \n\n");
		printf("项目地址 https://git.lmve.net/summary/thinkpad_unlock_bios.git \n！！！请勿商用！！！\n\n");
		return 0;
	}
	printf("\n");
	//printf("have %d file\n",argc-1);
	//printf(argv[1]);
	system("pause");
	return 0;
}