Buzzdev.org

Here’s the source code of grab_it tool.
I wrote it sometimes around may/june 2005 for some specific reason.

Maybe someone find this c++ source code useful.

// grab_it.cpp : Defines the entry point for the application.
// by buzz_lightyear
// sometime around may/june 2005
// http://buzzdev.net

#include "stdafx.h"
#include "windows.h"

// in this case, dump will be saved to MiniSD card
#define targetFile L"\Mini-SD\dump.bin"

int		lineHeight=1;		//progress bar height
int		drawPoint=319;
int		BarPosition=0;
int		screenWidth = GetSystemMetrics(SM_CXSCREEN);
HDC		hdc = ::GetDC(NULL);
HPEN	lineProgress,lineBackground,po;	// Pen Progress bar

wchar_t	Buff[1024];		// buffer for Error messages

DWORD	DumpStart=0x00000000;		//start address
DWORD	DumpSize=0x8000000;			//Size
DWORD	Step=0x80000;

extern "C" BOOL VirtualCopy(
  LPVOID lpvDest,
  LPVOID lpvSrc,
  DWORD cbSize,
  DWORD fdwProtect
);

int ShowProgress(int pos){
	MoveToEx(hdc,0,drawPoint,NULL);

	po = (HPEN)SelectObject(hdc,lineBackground);
	LineTo(hdc,pos,drawPoint);

    SelectObject(hdc,lineProgress);
    LineTo(hdc,screenWidth,drawPoint);

	SelectObject(hdc,lineBackground);
    LineTo(hdc,screenWidth,drawPoint);

return 0;
}

int ShowError(wchar_t text[1024]){
	MessageBox(NULL,text,L"ERROR",MB_OK | MB_TOPMOST | MB_SETFOREGROUND);
	return 0;
}

int WINAPI WinMain(	HINSTANCE hInstance,
					HINSTANCE hPrevInstance,
					LPTSTR    lpCmdLine,
					int       nCmdShow)
{/// 1st

	lineProgress = CreatePen(PS_SOLID,lineHeight,RGB(255,0,0)); // Progress bar
	lineBackground = CreatePen(PS_SOLID,lineHeight,RGB(100,100,100)); // Background bar

	HANDLE H=CreateFile(targetFile,GENERIC_WRITE,0,0,CREATE_ALWAYS,FILE_FLAG_WRITE_THROUGH,0);
	if(H==INVALID_HANDLE_VALUE)
	{
		MessageBox(NULL,L"Cannot create file!",L"Error",MB_OK);
		return 1;
	}

	//for( i; i<(DumpStart+DumpSize); i+=Step)
	{
		LPVOID Ptr=VirtualAlloc(
			0,
			512*1024,
			MEM_RESERVE,
			PAGE_READONLY
			);
		if(Ptr==0)
		{
			wsprintf(Buff,L"Cannot allocate %08X",i);
			ShowError(Buff);
			return 1;
		}
		/// update progress bar ///
		BarPosition=((i-DumpStart)/(DumpSize/screenWidth));
		ShowProgress(BarPosition);
		///////////////////////////

		if(!VirtualCopy(Ptr,(void*)(i/256),512*1024,PAGE_EXECUTE_READWRITE|PAGE_PHYSICAL))
		{
			wsprintf(Buff,L"Cannot map %08X",i);
			ShowError(Buff);
			return 1;
		}
		DWORD W=0;
		WriteFile(H,Ptr,512*1024,&W,0);
		if(W!=512*1024)
		{
			wsprintf(Buff,L"Error on WriteFile. Card full?",i);
			ShowError(Buff);
			return 1;
		}
		VirtualFree(Ptr,0,MEM_RELEASE);
	}

	CloseHandle(H);

	MessageBeep(MB_OK);

	DeleteObject(lineBackground);
	DeleteObject(lineProgress);
	return 0;
}

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