HexSpan GetMethodBodiesSpan(MethodBodyRvaAndRid[] methodBodyRvas)
{
if (methodBodyRvas.Length == 0)
{
return(default(HexSpan));
}
int index = methodBodyRvas.Length - 1;
var last = methodBodyRvas[index];
var info = ParseMethodBody(index + 1, new[] { last.Rid }, peHeaders.RvaToBufferPosition(last.Rva));
return(HexSpan.FromBounds(peHeaders.RvaToBufferPosition(methodBodyRvas[0].Rva), info.Span.End));
}
HexSpan?Read(PeHeaders peHeaders, DataDirectoryData dir)
{
uint rva = dir.VirtualAddress.Data.ReadValue();
uint size = dir.Size.Data.ReadValue();
if (rva == 0 || size == 0)
{
return(null);
}
var position = peHeaders.RvaToBufferPosition(rva);
var end = position + size;
if (end > HexPosition.MaxEndPosition)
{
return(null);
}
var span = HexSpan.FromBounds(position, end);
if (!file.Span.Contains(span))
{
return(null);
}
return(span);
}
HexSpan?GetGoToMetadataSpan(DotNetMetadataHeaders mdHeaders, PeHeaders peHeaders, uint offsetTokenValue, GoToMetadataKind mdKind)
{
MDTable mdTable;
switch (mdKind)
{
case GoToMetadataKind.Blob:
if (mdHeaders.BlobStream == null)
{
return(null);
}
return(new HexSpan(mdHeaders.BlobStream.Span.Span.Start + offsetTokenValue, 0));
case GoToMetadataKind.Strings:
if (mdHeaders.StringsStream == null)
{
return(null);
}
return(new HexSpan(mdHeaders.StringsStream.Span.Span.Start + offsetTokenValue, 0));
case GoToMetadataKind.US:
if (mdHeaders.USStream == null)
{
return(null);
}
return(new HexSpan(mdHeaders.USStream.Span.Span.Start + (offsetTokenValue & 0x00FFFFFF), 0));
case GoToMetadataKind.GUID:
if (mdHeaders.GUIDStream == null)
{
return(null);
}
return(new HexSpan(mdHeaders.GUIDStream.Span.Span.Start + (offsetTokenValue - 1) * 16, 16));
case GoToMetadataKind.Table:
mdTable = GetMDTable(mdHeaders, offsetTokenValue);
if (mdTable == null)
{
return(null);
}
return(new HexSpan(mdTable.Span.Start + ((offsetTokenValue & 0x00FFFFFF) - 1) * mdTable.RowSize, mdTable.RowSize));
case GoToMetadataKind.MemberRva:
if (peHeaders == null)
{
return(null);
}
mdTable = GetMDTable(mdHeaders, offsetTokenValue);
if (mdTable == null)
{
return(null);
}
if (mdTable.Table != Table.Method && mdTable.Table != Table.FieldRVA)
{
return(null);
}
// Column 0 is the RVA in both Method and FieldRVA tables
var pos = mdTable.Span.Start + ((offsetTokenValue & 0x00FFFFFF) - 1) * mdTable.RowSize;
var rva = HexView.Buffer.ReadUInt32(pos);
return(new HexSpan(peHeaders.RvaToBufferPosition(rva), 0));
default: throw new InvalidOperationException();
}
}
public override HexPosition RvaToBufferPosition(uint rva) => peHeaders.RvaToBufferPosition(rva);
