/// <exception cref="System.IO.IOException"/>
public virtual string NextLog()
{
if (currentLogData != null && currentLogLength > 0)
{
do
{
// seek to the end of the current log, relying on BoundedInputStream
// to prevent seeking past the end of the current log
if (currentLogData.Skip(currentLogLength) < 0)
{
break;
}
}while (currentLogData.Read() != -1);
}
currentLogType = null;
currentLogLength = 0;
currentLogData = null;
currentLogISR = null;
try
{
string logType = valueStream.ReadUTF();
string logLengthStr = valueStream.ReadUTF();
currentLogLength = long.Parse(logLengthStr);
currentLogData = new BoundedInputStream(valueStream, currentLogLength);
currentLogData.SetPropagateClose(false);
currentLogISR = new InputStreamReader(currentLogData, Sharpen.Extensions.GetEncoding
("UTF-8"));
currentLogType = logType;
}
catch (EOFException)
{
}
return(currentLogType);
}
public override InputStream GetDataStream(DirectoryNode dir)
{
DocumentInputStream dis = dir.CreateDocumentInputStream(Encryptor.DEFAULT_POIFS_ENTRY);
_length = dis.ReadLong();
// limit wrong calculated ole entries - (bug #57080)
// standard encryption always uses aes encoding, so blockSize is always 16
// http://stackoverflow.com/questions/3283787/size-of-data-after-aes-encryption
int blockSize = builder.GetHeader().CipherAlgorithm.blockSize;
long cipherLen = (_length / blockSize + 1) * blockSize;
Cipher cipher = GetCipher(GetSecretKey());
ByteArrayInputStream boundedDis = new BoundedInputStream(dis, cipherLen);
return(new BoundedInputStream(new CipherInputStream(boundedDis, cipher), _length));
}
