public long ResolvePositionToSectionData(uint rva, out PESection section)
{
section = FindSection(rva);
if (section == null)
{
throw new BadImageFormatException(string.Format(SR.ResolveImageSectionFailure, rva));
}
return(section.GetPointerToRawData(rva));
}
public IBinaryAccessor OpenImageToSectionData(uint rva, out PESection section)
{
IBinaryAccessor accessor;
if (!TryOpenImageToSectionData(rva, out accessor, out section))
{
throw new BadImageFormatException(string.Format(SR.ResolveImageSectionFailure, rva));
}
return(accessor);
}
public bool ResolvePositionToSectionData(uint rva, out long offset, out PESection section)
{
section = FindSection(rva);
if (section == null)
{
offset = 0;
return(false);
}
offset = section.GetPointerToRawData(rva);
return(true);
}
internal static unsafe PESection Read(IBinaryAccessor accessor)
{
var section = new PESection();
SectionHeader header;
fixed(byte *pBuff = accessor.ReadBytes(PEConstants.SectionHeaderSize))
{
header = *(SectionHeader *)pBuff;
}
section._name = Marshal.PtrToStringAnsi(new IntPtr(header.Name));
section._virtualSize = header.VirtualSize;
section._virtualAddress = header.VirtualAddress;
section._sizeOfRawData = header.SizeOfRawData;
section._pointerToRawData = header.PointerToRawData;
section._characteristics = header.Characteristics;
return(section);
}
protected unsafe void Read(IBinaryAccessor accessor)
{
// DOS
DOSHeader dosHeader;
fixed(byte *pBuff = accessor.ReadBytes(PEConstants.DosHeaderSize))
{
dosHeader = *(DOSHeader *)pBuff;
}
if (dosHeader.Signature != PEConstants.DosSignature)
{
throw new BadImageFormatException(SR.DOSHeaderSignatureNotValid);
}
accessor.Position = dosHeader.Lfanew;
// NT Signature
if (accessor.ReadUInt32() != PEConstants.NTSignature)
{
throw new BadImageFormatException(SR.PESignatureNotValid);
}
// COFF
COFFHeader coffHeader;
fixed(byte *pBuff = accessor.ReadBytes(PEConstants.COFFHeaderSize))
{
coffHeader = *(COFFHeader *)pBuff;
}
_characteristics = coffHeader.Characteristics;
_machine = coffHeader.Machine;
// PE
ushort peMagic = accessor.ReadUInt16();
accessor.Position -= 2;
if (peMagic == PEConstants.PEMagic32)
{
_is32Bits = true;
PEHeader peHeader;
fixed(byte *pBuff = accessor.ReadBytes(PEConstants.PEHeaderSize))
{
peHeader = *(PEHeader *)pBuff;
}
_addressOfEntryPoint = peHeader.AddressOfEntryPoint;
_imageBase = peHeader.ImageBase;
_sectionAlignment = peHeader.SectionAlignment;
_fileAlignment = peHeader.FileAlignment;
_subsystem = peHeader.Subsystem;
_dllCharacteristics = peHeader.DllCharacteristics;
_sizeOfStackReserve = peHeader.SizeOfStackReserve;
}
else if (peMagic == 0x20b)
{
_is32Bits = false;
PEHeader64 peHeader;
fixed(byte *pBuff = accessor.ReadBytes(PEConstants.PEHeader64Size))
{
peHeader = *(PEHeader64 *)pBuff;
}
_addressOfEntryPoint = peHeader.AddressOfEntryPoint;
_imageBase = peHeader.ImageBase;
_sectionAlignment = peHeader.SectionAlignment;
_fileAlignment = peHeader.FileAlignment;
_subsystem = peHeader.Subsystem;
_dllCharacteristics = peHeader.DllCharacteristics;
_sizeOfStackReserve = peHeader.SizeOfStackReserve;
}
else
{
throw new BadImageFormatException(SR.PEHeaderSignatureNotValid);
}
// Directories
for (int i = 0; i < PEConstants.NumberOfRvaAndSizes; i++)
{
fixed(byte *pBuff = accessor.ReadBytes(8))
{
_directories[i] = *(DataDirectory *)pBuff;
}
}
// Sections
_sections = new PESection[coffHeader.NumberOfSections];
for (int i = 0; i < coffHeader.NumberOfSections; i++)
{
_sections[i] = PESection.Read(accessor);
}
}
public virtual bool TryOpenImageToSectionData(uint rva, out IBinaryAccessor accessor, out PESection section)
{
section = FindSection(rva);
if (section == null)
{
accessor = null;
return(false);
}
long position = section.GetPointerToRawData(rva);
accessor = OpenImage();
accessor.Position = position;
return(true);
}
