internal ImageSection(ImageSectionHeader header, bool mapped_as_image, IntPtr base_ptr)
{
Name = header.GetName();
int data_offset = mapped_as_image ? header.VirtualAddress : header.PointerToRawData;
int data_size = mapped_as_image ? header.VirtualSize : header.SizeOfRawData;
Data = new SafeHGlobalBuffer(base_ptr + data_offset, data_size, false);
RelativeVirtualAddress = header.VirtualAddress;
}
internal ImageSection(ImageSectionHeader header, bool mapped_as_image, IntPtr base_ptr)
{
Name = header.GetName();
int data_offset = mapped_as_image ? header.VirtualAddress : header.PointerToRawData;
int data_size = mapped_as_image ? header.VirtualSize : header.SizeOfRawData;
Data = new SafeHGlobalBuffer(base_ptr + data_offset, data_size, false);
RelativeVirtualAddress = header.VirtualAddress;
Characteristics = (ImageSectionCharacteristics)(uint)header.Characteristics;
Characteristics &= ImageSectionCharacteristics.Code | ImageSectionCharacteristics.Execute | ImageSectionCharacteristics.InitiailizedData
| ImageSectionCharacteristics.Read | ImageSectionCharacteristics.Shared | ImageSectionCharacteristics.UninitializedData | ImageSectionCharacteristics.Write;
}
private void SetupValues()
{
if (_loaded_values)
{
return;
}
_loaded_values = true;
_image_sections = new List <ImageSection>();
IntPtr base_ptr = GetBasePointer();
if (base_ptr == IntPtr.Zero)
{
return;
}
IntPtr header_ptr = GetHeaderPointer(base_ptr);
if (header_ptr == IntPtr.Zero)
{
return;
}
ImageNtHeaders header = (ImageNtHeaders)Marshal.PtrToStructure(header_ptr, typeof(ImageNtHeaders));
var buffer = header_ptr + Marshal.SizeOf(header) + header.FileHeader.SizeOfOptionalHeader;
ImageSectionHeader[] section_headers = new ImageSectionHeader[header.FileHeader.NumberOfSections];
int header_size = Marshal.SizeOf(typeof(ImageSectionHeader));
for (int i = 0; i < header.FileHeader.NumberOfSections; ++i)
{
ImageSectionHeader section = (ImageSectionHeader)Marshal.PtrToStructure(buffer + i * header_size, typeof(ImageSectionHeader));
_image_sections.Add(new ImageSection(section, MappedAsImage, base_ptr));
}
IImageOptionalHeader optional_header = GetOptionalHeader(header_ptr);
if (optional_header == null)
{
return;
}
_image_base_address = optional_header.GetImageBase();
_image_entry_point = optional_header.GetAddressOfEntryPoint();
_is_64bit = optional_header.GetMagic() == IMAGE_NT_OPTIONAL_HDR_MAGIC.HDR64;
_dll_characteristics = optional_header.GetDllCharacteristics();
}