public unsafe bool Initialize(BinaryReader reader)
{
if (reader == null)
{
return(false);
}
binary_reader = reader;
reader.BaseStream.Position = 0;
byte[] buffer;
IntPtr pointer;
long NewPos;
try
{
buffer = reader.ReadBytes(sizeof(IMAGE_DOS_HEADER));
fixed(byte *p = buffer)
{
pointer = (IntPtr)p;
}
idh = (IMAGE_DOS_HEADER)Marshal.PtrToStructure(pointer, typeof(IMAGE_DOS_HEADER));
if (idh.e_magic != 0x5A4D)
{
return(false);
}
reader.BaseStream.Position = idh.e_lfanew;
buffer = reader.ReadBytes(sizeof(IMAGE_NT_HEADERS));
fixed(byte *p = buffer)
{
pointer = (IntPtr)p;
}
inh = (IMAGE_NT_HEADERS)Marshal.PtrToStructure(pointer, typeof(IMAGE_NT_HEADERS));
if (inh.Signature != 0x4550)
{
return(false);
}
reader.BaseStream.Position = idh.e_lfanew + 4 + sizeof(IMAGE_FILE_HEADER) + inh.ifh.SizeOfOptionalHeader;
sections = new image_section_header[inh.ifh.NumberOfSections];
buffer = reader.ReadBytes(sizeof(image_section_header) * inh.ifh.NumberOfSections);
fixed(byte *p = buffer)
{
pointer = (IntPtr)p;
}
for (int i = 0; i < sections.Length; i++)
{
sections[i] = (image_section_header)Marshal.PtrToStructure(pointer, typeof(image_section_header));
pointer = (IntPtr)(pointer.ToInt32() + Marshal.SizeOf(typeof(image_section_header)));
}
// NET Directory
if (inh.ioh.MetaDataDirectory.RVA == 0)
{
return(false);
}
NewPos = (long)Rva2Offset(inh.ioh.MetaDataDirectory.RVA);
if (NewPos == 0)
{
return(false);
}
reader.BaseStream.Position = NewPos;
buffer = reader.ReadBytes(sizeof(NETDirectory));
fixed(byte *p = buffer)
{
pointer = (IntPtr)p;
}
// After .NET Directory comes body of methods!
netdir = (NETDirectory)Marshal.PtrToStructure(pointer, typeof(NETDirectory));
reader.BaseStream.Position = (long)Rva2Offset(netdir.MetaDataRVA);
mh = new MetadataReader.MetaDataHeader();
mh.Signature = reader.ReadInt32();
mh.MajorVersion = reader.ReadInt16();
mh.MinorVersion = reader.ReadInt16();
mh.Reserved = reader.ReadInt32();
mh.VersionLenght = reader.ReadInt32();
mh.VersionString = reader.ReadBytes(mh.VersionLenght);
mh.Flags = reader.ReadInt16();
mh.NumberOfStreams = reader.ReadInt16();
streams = new MetaDataStream[mh.NumberOfStreams];
for (int i = 0; i < mh.NumberOfStreams; ++i)
{
streams[i].Offset = reader.ReadInt32();
streams[i].Size = reader.ReadInt32();
char[] chars = new char[32];
int index = 0;
byte character = 0;
while ((character = reader.ReadByte()) != 0)
{
chars[index++] = (char)character;
}
index++;
int padding = ((index % 4) != 0) ? (4 - (index % 4)) : 0;
reader.ReadBytes(padding);
streams[i].Name = new String(chars).Trim(new Char[] { '\0' });
if (streams[i].Name == "#~" || streams[i].Name == "#-")
{
MetadataRoot.Name = streams[i].Name;
MetadataRoot.Offset = streams[i].Offset;
MetadataRoot.Size = streams[i].Size;
long savepoz = reader.BaseStream.Position;
reader.BaseStream.Position = (long)(Rva2Offset(netdir.MetaDataRVA) + streams[i].Offset);
TablesBytes = reader.ReadBytes(streams[i].Size);
reader.BaseStream.Position = savepoz;
}
if (streams[i].Name == "#Strings")
{
long savepoz = reader.BaseStream.Position;
reader.BaseStream.Position = (long)(Rva2Offset(netdir.MetaDataRVA) + streams[i].Offset);
StringOffset = reader.BaseStream.Position;
Strings = reader.ReadBytes(streams[i].Size);
reader.BaseStream.Position = savepoz;
}
if (streams[i].Name == "#US")
{
long savepoz = reader.BaseStream.Position;
reader.BaseStream.Position = (long)(Rva2Offset(netdir.MetaDataRVA) + streams[i].Offset);
US = reader.ReadBytes(streams[i].Size);
reader.BaseStream.Position = savepoz;
}
if (streams[i].Name == "#Blob")
{
long savepoz = reader.BaseStream.Position;
reader.BaseStream.Position = (long)(Rva2Offset(netdir.MetaDataRVA) + streams[i].Offset);
BlobOffset = reader.BaseStream.Position;
Blob = reader.ReadBytes(streams[i].Size);
reader.BaseStream.Position = savepoz;
}
if (streams[i].Name == "#GUID")
{
long savepoz = reader.BaseStream.Position;
reader.BaseStream.Position = (long)(Rva2Offset(netdir.MetaDataRVA) + streams[i].Offset);
GUID = reader.ReadBytes(streams[i].Size);
reader.BaseStream.Position = savepoz;
}
}
reader.BaseStream.Position = (long)(Rva2Offset(netdir.MetaDataRVA) + MetadataRoot.Offset);
tablestart = reader.BaseStream.Position;
buffer = reader.ReadBytes(sizeof(TableHeader));
fixed(byte *p = buffer)
{
pointer = (IntPtr)p;
}
tableheader = (TableHeader)Marshal.PtrToStructure(pointer, typeof(TableHeader));
TableLengths = new int[64];
//read as many uints as there are bits set in maskvalid
for (int i = 0; i < 64; i++)
{
int count = (((tableheader.MaskValid >> i) & 1) == 0) ? 0 : reader.ReadInt32();
TableLengths[i] = count;
}
TablesOffset = reader.BaseStream.Position;
InitTablesInfo();
// Get Table sizes and all Tables
tablesize = new TableSize[0x2D];
tables = new Table[0x2D];
for (int i = 0; i < tablesize.Length; i++)
{
tablesize[i].Sizes = new int[tablesinfo[i].ctypes.Length];
tablesize[i].TotalSize = 0;
for (int j = 0; j < tablesinfo[i].ctypes.Length; j++)
{
tablesize[i].Sizes[j] = GetTypeSize(tablesinfo[i].ctypes[j]);
tablesize[i].TotalSize = tablesize[i].TotalSize + tablesize[i].Sizes[j];
}
}
for (int i = 0; i < tablesize.Length; i++)
{
if (TableLengths[i] > 0)
{
tables[i].members = new long[TableLengths[i]][];
for (int j = 0; j < TableLengths[i]; j++)
{
tables[i].members[j] = new long[tablesinfo[i].ctypes.Length];
for (int k = 0; k < tablesinfo[i].ctypes.Length; k++)
{
if (tablesize[i].Sizes[k] == 2)
{
tables[i].members[j][k] = reader.ReadInt16() & 65535;
}
if (tablesize[i].Sizes[k] == 4)
{
tables[i].members[j][k] = reader.ReadInt32() & 4294967295;
}
}
}
}
} // end of big for!
}
catch
{
return(false);
}
return(true);
}
private XimPath()
{
XimRepository ximNET = NETDirectory.Open("", false);
}
