public static bool IsMacBinStream(Stream stream)
{
MacBinaryHeader macBinaryHeader = null;
try
{
macBinaryHeader = MimeAppleTranscoder.ExtractMacBinHeader(stream);
}
catch (MimeException)
{
stream.Position = 0L;
return(false);
}
long num = 128L;
if (macBinaryHeader.SecondaryHeaderLength > 0)
{
num += (long)(macBinaryHeader.SecondaryHeaderLength + MimeAppleTranscoder.GetMacBinPaddingSize(macBinaryHeader.SecondaryHeaderLength));
}
if (macBinaryHeader.DataForkLength > 0L)
{
num += macBinaryHeader.DataForkLength + (long)MimeAppleTranscoder.GetMacBinPaddingSize((int)macBinaryHeader.DataForkLength);
}
if (macBinaryHeader.ResourceForkLength > 0L)
{
num += macBinaryHeader.ResourceForkLength + (long)MimeAppleTranscoder.GetMacBinPaddingSize((int)macBinaryHeader.ResourceForkLength);
}
if (macBinaryHeader.GetInfoLength > 0)
{
num += (long)macBinaryHeader.GetInfoLength;
}
stream.Position = 0L;
return(stream.Length == num);
}
private static void WriteMacBinPadding(Stream outStream, int lastBlobSize)
{
int macBinPaddingSize = MimeAppleTranscoder.GetMacBinPaddingSize(lastBlobSize);
if (macBinPaddingSize != 0)
{
outStream.Write(MimeAppleTranscoder.padBytes, 0, macBinPaddingSize);
}
}
public static Stream ExtractDataFork(Stream macBinStream)
{
MacBinaryHeader macBinaryHeader = MimeAppleTranscoder.ExtractMacBinHeader(macBinStream);
int num = 128;
if (macBinaryHeader.SecondaryHeaderLength > 0)
{
num += macBinaryHeader.SecondaryHeaderLength + MimeAppleTranscoder.GetMacBinPaddingSize(macBinaryHeader.SecondaryHeaderLength);
}
return(new BoundedStream(macBinStream, (long)num, macBinaryHeader.DataForkLength));
}
public static void MacBinToApplefile(Stream macBinStream, Stream outStream, out string fileName, out byte[] additionalInfo)
{
MacBinaryHeader macBinaryHeader = MimeAppleTranscoder.ExtractMacBinHeader(macBinStream);
fileName = macBinaryHeader.FileName;
if (outStream == null)
{
additionalInfo = null;
return;
}
additionalInfo = MimeAppleTranscoder.EncodeAdditionalInfo(macBinaryHeader.FileCreator, macBinaryHeader.FileType);
List <MimeAppleTranscoder.EntryDescriptor> descriptors = new List <MimeAppleTranscoder.EntryDescriptor>(6);
int entryOffset = 0;
byte[] array = null;
if (macBinaryHeader.FileName != null)
{
MimeAppleTranscoder.EntryDescriptor descr = new MimeAppleTranscoder.EntryDescriptor(3, entryOffset, macBinaryHeader.FileNameLength);
try
{
array = MimeAppleTranscoder.macEncoding.GetBytes(fileName);
}
catch (ArgumentOutOfRangeException innerException)
{
throw new MimeException(EmailMessageStrings.MacBinWrongFilename, innerException);
}
MimeAppleTranscoder.AddEntry(descriptors, descr, ref entryOffset);
}
MimeAppleTranscoder.EntryDescriptor entryDescriptor = new MimeAppleTranscoder.EntryDescriptor(8, entryOffset, 16);
MimeAppleTranscoder.AddEntry(descriptors, entryDescriptor, ref entryOffset);
int appleDate = MimeAppleTranscoder.GetAppleDate(macBinaryHeader.CreationDate);
int appleDate2 = MimeAppleTranscoder.GetAppleDate(macBinaryHeader.ModificationDate);
byte[] array2 = new byte[entryDescriptor.EntryLength];
int num = 0;
MimeAppleTranscoder.WriteIntData(appleDate, array2, ref num);
MimeAppleTranscoder.WriteIntData(appleDate2, array2, ref num);
MimeAppleTranscoder.WriteIntData(0, array2, ref num);
MimeAppleTranscoder.WriteIntData(0, array2, ref num);
MimeAppleTranscoder.EntryDescriptor entryDescriptor2 = new MimeAppleTranscoder.EntryDescriptor(9, entryOffset, 28);
MimeAppleTranscoder.AddEntry(descriptors, entryDescriptor2, ref entryOffset);
byte[] array3 = new byte[entryDescriptor2.EntryLength];
num = 0;
MimeAppleTranscoder.WriteIntData(macBinaryHeader.FileType, array3, ref num);
MimeAppleTranscoder.WriteIntData(macBinaryHeader.FileCreator, array3, ref num);
MimeAppleTranscoder.WriteShortData((int)((short)macBinaryHeader.FinderFlags), array3, ref num);
MimeAppleTranscoder.WriteShortData((int)((short)macBinaryHeader.YIcon), array3, ref num);
MimeAppleTranscoder.WriteShortData((int)((short)macBinaryHeader.XIcon), array3, ref num);
MimeAppleTranscoder.WriteShortData((int)((short)macBinaryHeader.FileId), array3, ref num);
MimeAppleTranscoder.WriteIntData(0, array3, ref num);
MimeAppleTranscoder.WriteIntData(0, array3, ref num);
MimeAppleTranscoder.WriteIntData(0, array3, ref num);
MimeAppleTranscoder.EntryDescriptor entryDescriptor3 = new MimeAppleTranscoder.EntryDescriptor(10, entryOffset, 4);
MimeAppleTranscoder.AddEntry(descriptors, entryDescriptor3, ref entryOffset);
byte[] array4 = new byte[entryDescriptor3.EntryLength];
array4[0] = 0;
array4[1] = 0;
array4[2] = 0;
array4[3] = (macBinaryHeader.Protected ? 1 : 0);
if (macBinaryHeader.ResourceForkLength > 0L)
{
MimeAppleTranscoder.EntryDescriptor descr2 = new MimeAppleTranscoder.EntryDescriptor(2, entryOffset, (int)macBinaryHeader.ResourceForkLength);
MimeAppleTranscoder.AddEntry(descriptors, descr2, ref entryOffset);
}
if (macBinaryHeader.GetInfoLength > 0)
{
MimeAppleTranscoder.EntryDescriptor descr3 = new MimeAppleTranscoder.EntryDescriptor(4, entryOffset, macBinaryHeader.GetInfoLength);
MimeAppleTranscoder.AddEntry(descriptors, descr3, ref entryOffset);
}
MimeAppleTranscoder.WriteApplefileHeader(descriptors, true, outStream);
if (array != null)
{
outStream.Write(array, 0, array.Length);
}
outStream.Write(array2, 0, array2.Length);
outStream.Write(array3, 0, array3.Length);
outStream.Write(array4, 0, array4.Length);
if (macBinaryHeader.SecondaryHeaderLength > 0)
{
macBinStream.Position += (long)(macBinaryHeader.SecondaryHeaderLength + MimeAppleTranscoder.GetMacBinPaddingSize(macBinaryHeader.SecondaryHeaderLength));
}
if (macBinaryHeader.DataForkLength > 0L)
{
macBinStream.Position += macBinaryHeader.DataForkLength + (long)MimeAppleTranscoder.GetMacBinPaddingSize((int)macBinaryHeader.DataForkLength);
}
if (macBinaryHeader.ResourceForkLength > 0L)
{
MimeAppleTranscoder.CopyStreamData(macBinStream, outStream, new int?((int)macBinaryHeader.ResourceForkLength));
macBinStream.Position += (long)MimeAppleTranscoder.GetMacBinPaddingSize((int)macBinaryHeader.ResourceForkLength);
}
if (macBinaryHeader.GetInfoLength > 0)
{
MimeAppleTranscoder.CopyStreamData(macBinStream, outStream, new int?(macBinaryHeader.GetInfoLength));
macBinStream.Position += (long)MimeAppleTranscoder.GetMacBinPaddingSize(macBinaryHeader.GetInfoLength);
}
}