public void ReadDataDescriptor(bool zip64, DescriptorData data)
{
if (this.ReadLEInt() != 0x8074b50)
{
throw new ZipException("Data descriptor signature not found");
}
data.Crc = this.ReadLEInt();
if (zip64)
{
data.CompressedSize = this.ReadLELong();
data.Size = this.ReadLELong();
}
else
{
data.CompressedSize = this.ReadLEInt();
data.Size = this.ReadLEInt();
}
}
public bool TestArchive(bool testData, TestStrategy strategy, ZipTestResultHandler resultHandler)
{
if (this.isDisposed_)
{
throw new ObjectDisposedException("ZipFile");
}
TestStatus status = new TestStatus(this);
if (resultHandler != null)
{
resultHandler(status, null);
}
HeaderTest tests = testData ? (HeaderTest.Header | HeaderTest.Extract) : HeaderTest.Header;
bool flag = true;
try
{
for (int i = 0; flag && (i < this.Count); i++)
{
if (resultHandler != null)
{
status.SetEntry(this[i]);
status.SetOperation(TestOperation.EntryHeader);
resultHandler(status, null);
}
try
{
this.TestLocalHeader(this[i], tests);
}
catch (ZipException exception)
{
status.AddError();
if (resultHandler != null)
{
resultHandler(status, string.Format("Exception during test - '{0}'", exception.Message));
}
if (strategy == TestStrategy.FindFirstError)
{
flag = false;
}
}
if ((flag && testData) && this[i].IsFile)
{
if (resultHandler != null)
{
status.SetOperation(TestOperation.EntryData);
resultHandler(status, null);
}
Crc32 crc = new Crc32();
using (Stream stream = this.GetInputStream(this[i]))
{
int num3;
byte[] buffer = new byte[0x1000];
long num2 = 0L;
while ((num3 = stream.Read(buffer, 0, buffer.Length)) > 0)
{
crc.Update(buffer, 0, num3);
if (resultHandler != null)
{
num2 += num3;
status.SetBytesTested(num2);
resultHandler(status, null);
}
}
}
if (this[i].Crc != crc.Value)
{
status.AddError();
if (resultHandler != null)
{
resultHandler(status, "CRC mismatch");
}
if (strategy == TestStrategy.FindFirstError)
{
flag = false;
}
}
if ((this[i].Flags & 8) != 0)
{
ZipHelperStream stream2 = new ZipHelperStream(this.baseStream_);
DescriptorData data = new DescriptorData();
stream2.ReadDataDescriptor(this[i].LocalHeaderRequiresZip64, data);
if (this[i].Crc != data.Crc)
{
status.AddError();
}
if (this[i].CompressedSize != data.CompressedSize)
{
status.AddError();
}
if (this[i].Size != data.Size)
{
status.AddError();
}
}
}
if (resultHandler != null)
{
status.SetOperation(TestOperation.EntryComplete);
resultHandler(status, null);
}
}
if (resultHandler != null)
{
status.SetOperation(TestOperation.MiscellaneousTests);
resultHandler(status, null);
}
}
catch (Exception exception2)
{
status.AddError();
if (resultHandler != null)
{
resultHandler(status, string.Format("Exception during test - '{0}'", exception2.Message));
}
}
if (resultHandler != null)
{
status.SetOperation(TestOperation.Complete);
status.SetEntry(null);
resultHandler(status, null);
}
return (status.ErrorCount == 0);
}