//================================================================
//----------------------------------------------------------------
// calulates the Offset from a RVA
// Base - base of the MMF
// dwRVA - the RVA to calculate
// returns 0 if an error occurred else the calculated Offset will be returned
DWORD CPELibrary::RVA2Offset(DWORD dwRVA)
{
DWORD _offset;
PIMAGE_SECTION_HEADER section;
section=ImageRVA2Section(dwRVA);//ImageRvaToSection(pimage_nt_headers,Base,dwRVA);
if(section==NULL)
{
return(0);
}
_offset=dwRVA+section->PointerToRawData-section->VirtualAddress;
return(_offset);
}
DWORD RVA2Offset(void * pImageBase, DWORD dwRVA)
{
DWORD offset;
PIMAGE_SECTION_HEADER section;
PIMAGE_DOS_HEADER pimage_dos_header;
PIMAGE_NT_HEADERS pimage_nt_headers;
pimage_dos_header = PIMAGE_DOS_HEADER(pImageBase);
pimage_nt_headers = (PIMAGE_NT_HEADERS)( ((SIZE_T)pimage_dos_header) + pimage_dos_header -> e_lfanew);
section = ImageRVA2Section(pimage_nt_headers, dwRVA);
if (section == nullptr)
{
return 0;
}
offset = dwRVA + section->PointerToRawData - section->VirtualAddress;
return offset;
}