public override void Close()
{
this.internalReader = new ZipInputStream.ReadDataHandler(this.ReadingNotAvailable);
this.crc = null;
this.entry = null;
base.Close();
}
private int InitialRead(byte[] destination, int offset, int count)
{
if (!this.CanDecompressEntry)
{
throw new ZipException("Library cannot extract this entry. Version required is (" + this.entry.Version + ")");
}
if (this.entry.IsCrypted)
{
if (this.password == null)
{
throw new ZipException("No password set.");
}
PkzipClassicManaged pkzipClassicManaged = new PkzipClassicManaged();
byte[] rgbKey = PkzipClassic.GenerateKeys(ZipConstants.ConvertToArray(this.password));
this.inputBuffer.CryptoTransform = pkzipClassicManaged.CreateDecryptor(rgbKey, null);
byte[] array = new byte[12];
this.inputBuffer.ReadClearTextBuffer(array, 0, 12);
if (array[11] != this.entry.CryptoCheckValue)
{
throw new ZipException("Invalid password");
}
if (this.csize >= 12L)
{
this.csize -= 12L;
}
else if ((this.entry.Flags & 8) == 0)
{
throw new ZipException(string.Format("Entry compressed size {0} too small for encryption", this.csize));
}
}
else
{
this.inputBuffer.CryptoTransform = null;
}
if (this.csize > 0L || (this.flags & 8) != 0)
{
if (this.method == 8 && this.inputBuffer.Available > 0)
{
this.inputBuffer.SetInflaterInput(this.inf);
}
this.internalReader = new ZipInputStream.ReadDataHandler(this.BodyRead);
return(this.BodyRead(destination, offset, count));
}
this.internalReader = new ZipInputStream.ReadDataHandler(this.ReadingNotAvailable);
return(0);
}
public ZipEntry GetNextEntry()
{
if (this.crc == null)
{
throw new InvalidOperationException("Closed.");
}
if (this.entry != null)
{
this.CloseEntry();
}
int num = this.inputBuffer.ReadLeInt();
if (num == 33639248 || num == 101010256 || num == 84233040 || num == 117853008 || num == 101075792)
{
this.Close();
return(null);
}
if (num == 808471376 || num == 134695760)
{
num = this.inputBuffer.ReadLeInt();
}
if (num != 67324752)
{
throw new ZipException("Wrong Local header signature: 0x" + string.Format("{0:X}", num));
}
short versionRequiredToExtract = (short)this.inputBuffer.ReadLeShort();
this.flags = this.inputBuffer.ReadLeShort();
this.method = this.inputBuffer.ReadLeShort();
uint num2 = (uint)this.inputBuffer.ReadLeInt();
int num3 = this.inputBuffer.ReadLeInt();
this.csize = (long)this.inputBuffer.ReadLeInt();
this.size = (long)this.inputBuffer.ReadLeInt();
int num4 = this.inputBuffer.ReadLeShort();
int num5 = this.inputBuffer.ReadLeShort();
bool flag = (this.flags & 1) == 1;
byte[] array = new byte[num4];
this.inputBuffer.ReadRawBuffer(array);
string name = ZipConstants.ConvertToStringExt(this.flags, array);
this.entry = new ZipEntry(name, (int)versionRequiredToExtract);
this.entry.Flags = this.flags;
this.entry.CompressionMethod = (CompressionMethod)this.method;
if ((this.flags & 8) == 0)
{
this.entry.Crc = ((long)num3 & (long)((ulong)-1));
this.entry.Size = (this.size & (long)((ulong)-1));
this.entry.CompressedSize = (this.csize & (long)((ulong)-1));
this.entry.CryptoCheckValue = (byte)(num3 >> 24 & 255);
}
else
{
if (num3 != 0)
{
this.entry.Crc = ((long)num3 & (long)((ulong)-1));
}
if (this.size != 0L)
{
this.entry.Size = (this.size & (long)((ulong)-1));
}
if (this.csize != 0L)
{
this.entry.CompressedSize = (this.csize & (long)((ulong)-1));
}
this.entry.CryptoCheckValue = (byte)(num2 >> 8 & 255u);
}
this.entry.DosTime = (long)((ulong)num2);
if (num5 > 0)
{
byte[] array2 = new byte[num5];
this.inputBuffer.ReadRawBuffer(array2);
this.entry.ExtraData = array2;
}
this.entry.ProcessExtraData(true);
if (this.entry.CompressedSize >= 0L)
{
this.csize = this.entry.CompressedSize;
}
if (this.entry.Size >= 0L)
{
this.size = this.entry.Size;
}
if (this.method == 0 && ((!flag && this.csize != this.size) || (flag && this.csize - 12L != this.size)))
{
throw new ZipException("Stored, but compressed != uncompressed");
}
if (this.entry.IsCompressionMethodSupported())
{
this.internalReader = new ZipInputStream.ReadDataHandler(this.InitialRead);
}
else
{
this.internalReader = new ZipInputStream.ReadDataHandler(this.ReadingNotSupported);
}
return(this.entry);
}
public ZipInputStream(Stream baseInputStream, int bufferSize) : base(baseInputStream, new Inflater(true), bufferSize)
{
this.internalReader = new ZipInputStream.ReadDataHandler(this.ReadingNotAvailable);
}
