com.mindbright.ssh2

Class SSH2CompressorZLibOpenSSH

java.lang.Object

com.mindbright.ssh2.SSH2Compressor

com.mindbright.ssh2.SSH2CompressorZLib

com.mindbright.ssh2.SSH2CompressorZLibOpenSSH

public class SSH2CompressorZLibOpenSSH
extends SSH2CompressorZLib

Implements the [email protected] compression algorithm a implemented in OpenSSH 4.2p1. This is just zlib but the compression starts when the user has authenitcated successfully.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	authenticated

Fields inherited from class com.mindbright.ssh2.SSH2Compressor

COMPRESS_MODE, UNCOMPRESS_MODE

Constructor Summary

Constructors

Constructor and Description
SSH2CompressorZLibOpenSSH()

Method Summary

Methods

Modifier and Type	Method and Description
void	authSucceeded() Tell compression library that uiser has authenticated
void	compress(SSH2DataBuffer data) Compress a block of data.
void	init(int mode, int level) Initialize the compressor.
int	uncompress(SSH2DataBuffer data, int len) Uncompress a block of data.

Methods inherited from class com.mindbright.ssh2.SSH2CompressorZLib

numOfCompressedBytes, numOfUncompressedBytes

Methods inherited from class com.mindbright.ssh2.SSH2Compressor

getInstance

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

authenticated

protected boolean authenticated

Constructor Detail

SSH2CompressorZLibOpenSSH

public SSH2CompressorZLibOpenSSH()

Method Detail

init

public void init(int mode,
        int level)

Description copied from class: SSH2Compressor

Initialize the compressor. Sets the mode (compress or uncompress) as well as the desired level of compression.

Overrides:

init in class SSH2CompressorZLib

Parameters:

mode - Either COMPRESS_MODE or UNCOMPRESS_MODE.

level - The level of compression. The exact meaning of this is algorithm dependent.

compress

public void compress(SSH2DataBuffer data)
              throws SSH2CompressionException

Description copied from class: SSH2Compressor

Compress a block of data.

Overrides:

compress in class SSH2CompressorZLib

Parameters:

data - The block of data to compress. The compressed data is left in the same buffer.

Throws:

SSH2CompressionException

uncompress

public int uncompress(SSH2DataBuffer data,
             int len)
               throws SSH2CompressionException

Description copied from class: SSH2Compressor

Uncompress a block of data. The uncompressed data is stored in the SSH2DataBuffer given so this one has to be big enough to fit the uncompressed data block.

Overrides:

uncompress in class SSH2CompressorZLib

Parameters:

data - The block of data to uncompress.

len - How much data can be stored in the given buffer.

Throws:

SSH2CompressionException

authSucceeded

public void authSucceeded()

Description copied from class: SSH2Compressor

Tell compression library that uiser has authenticated

Overrides:

authSucceeded in class SSH2Compressor