public Segment(SimpleEndianessAwareReader reader, Stream stream, MachO machO) : base(reader, stream)
{
this.is64 = machO.Is64;
Name = ReadSectionOrSegmentName();
Address = ReadUInt32OrUInt64();
Size = ReadUInt32OrUInt64();
FileOffset = ReadUInt32OrUInt64();
var fileSize = ReadUInt32OrUInt64();
MaximalProtection = ReadProtection();
InitialProtection = ReadProtection();
var numberOfSections = Reader.ReadInt32();
Reader.ReadInt32(); // we ignore flags for now
if (fileSize > 0)
{
var streamPosition = Stream.Position;
Stream.Seek((long)FileOffset, SeekOrigin.Begin);
data = new byte[Size];
var buffer = stream.ReadBytesOrThrow(checked ((int)fileSize));
Array.Copy(buffer, data, buffer.Length);
Stream.Position = streamPosition;
}
var sections = new List <Section>();
for (var i = 0; i < numberOfSections; i++)
{
var sectionName = ReadSectionOrSegmentName();
var segmentName = ReadSectionOrSegmentName();
// An intermediate object file contains only one segment.
// This segment name is empty, its sections segment names are not empty.
if (machO.FileType != FileType.Object && segmentName != Name)
{
throw new InvalidOperationException("Unexpected name of the section's segment.");
}
var sectionAddress = ReadUInt32OrUInt64();
var sectionSize = ReadUInt32OrUInt64();
var offset = Reader.ReadUInt32();
var alignExponent = Reader.ReadUInt32();
var relocOffset = Reader.ReadUInt32();
var numberOfReloc = Reader.ReadUInt32();
var flags = Reader.ReadUInt32();
_ = Reader.ReadUInt32(); // reserved1
_ = Reader.ReadUInt32(); // reserved2
_ = is64 ? Reader.ReadUInt32() : 0; // reserved3
var section = new Section(sectionName, segmentName, sectionAddress, sectionSize, offset, alignExponent, relocOffset, numberOfReloc, flags, this);
sections.Add(section);
}
Sections = new ReadOnlyCollection <Section>(sections);
}
public static MachOResult TryLoad(string fileName, out MachO machO)
{
machO = null;
uint magic;
using (var reader = new BinaryReader(File.OpenRead(fileName)))
{
magic = reader.ReadUInt32();
if (magic != Magic64 && magic != Magic32)
{
return(MachOResult.NotMachO);
}
}
machO = new MachO(fileName, magic == Magic64);
return(MachOResult.OK);
}
