jnetpcap.filter.bpf
Class BPFProgram

java.lang.Object
  jnetpcap.filter.bpf.BPFProgram

public class BPFProgram
extends java.lang.Object

A set of instructions compiled from a textual expression to a binary level which can be passed to a BPF VM for interpretation.

Author:

Mark Bednarczyk, Sly Technologies, Inc.

Constructor Summary

BPFProgram(byte[] pc)

BPFProgram(java.lang.String tcpdumpText)

Method Summary

static BPFInstruction[]	compileTcpdumpOutput(java.lang.String text)
static BPFInstruction[]	convertBE(byte[] program)
static BPFInstruction[]	convertLE(byte[] program)
BPFInstruction[]	getCode()
java.nio.ByteOrder	getEncoding()
int	getLength()
java.nio.ByteBuffer	getRaw()
java.lang.StringBuilder	toBuffer(java.lang.StringBuilder buf)
java.lang.StringBuilder	toBufferCode(java.lang.StringBuilder buf)
java.lang.String	toString()
java.lang.String	toStringCode()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BPFProgram

public BPFProgram(byte[] pc)
           throws IllegalInstruction

Throws:

IllegalInstruction

BPFProgram

public BPFProgram(java.lang.String tcpdumpText)
           throws IllegalInstruction

Throws:

IllegalInstruction

Method Detail

convertBE

public static BPFInstruction[] convertBE(byte[] program)
                                  throws IllegalInstruction

Throws:

IllegalInstruction

convertLE

public static BPFInstruction[] convertLE(byte[] program)
                                  throws IllegalInstruction

Throws:

IllegalInstruction

compileTcpdumpOutput

public static BPFInstruction[] compileTcpdumpOutput(java.lang.String text)
                                             throws IllegalInstruction

Throws:

IllegalInstruction

getCode

public final BPFInstruction[] getCode()

Returns:

Returns the code.

getEncoding

public final java.nio.ByteOrder getEncoding()

Returns:

Returns the encoding.

getLength

public final int getLength()

Returns:

Returns the length.

getRaw

public final java.nio.ByteBuffer getRaw()

Returns:

Returns the raw.

toBuffer

public java.lang.StringBuilder toBuffer(java.lang.StringBuilder buf)

toBufferCode

public java.lang.StringBuilder toBufferCode(java.lang.StringBuilder buf)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toStringCode

public java.lang.String toStringCode()

Returns: