org.jnetstream.filter.bpf
Class PcapDebugFilter

java.lang.Object
  org.jnetstream.filter.bpf.BPFFilter<ProtocolFilterTarget>
      org.jnetstream.filter.bpf.PcapFilter
          org.jnetstream.filter.bpf.PcapDebugFilter

All Implemented Interfaces:

Filter<ProtocolFilterTarget>, FilterExpression<BPFProgram>

public class PcapDebugFilter
extends PcapFilter

Author:

Mark Bednarczyk, Sly Technologies, Inc.

Nested Class Summary

Nested classes/interfaces inherited from class org.jnetstream.filter.bpf.BPFFilter

BPFFilter.BPFProtocolFilter

Nested classes/interfaces inherited from interface org.jnetstream.filter.FilterExpression

FilterExpression.FilterExpressionType

Nested classes/interfaces inherited from interface org.jnetstream.filter.Filter

Filter.AND<T extends FilterTarget>, Filter.MAXIMUM<T extends FilterTarget>, Filter.MINIMUM<T extends FilterTarget>, Filter.NOT<T extends FilterTarget>, Filter.OR<T extends FilterTarget>

Field Summary

static java.lang.String

TYPE

Fields inherited from interface org.jnetstream.filter.Filter

TRUE

Constructor Summary

PcapDebugFilter(java.lang.String tcpdumpOutput, FilterTarget target)

Method Summary

BPFProgram	compile(FilterTarget target) Compiles the current expression for target and returns the compiled result
static BPFInstruction[]	compileTcpdumpOutput(java.lang.String text) Compiles a tcpdump/libpcap generated pseudo BPF code to binary form suitable for use with BPFProgram.

Methods inherited from class org.jnetstream.filter.bpf.PcapFilter

getExpression, getExpressionType

Methods inherited from class org.jnetstream.filter.bpf.BPFFilter

accept, execute

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final java.lang.String TYPE

See Also:

Constant Field Values

Constructor Detail

PcapDebugFilter

public PcapDebugFilter(java.lang.String tcpdumpOutput,
                       FilterTarget target)
                throws IllegalInstructionException

Throws:

IllegalInstructionException

Method Detail

compileTcpdumpOutput

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

Compiles a tcpdump/libpcap generated pseudo BPF code to binary form suitable for use with BPFProgram.

Parameters:

text - the textual pseudo code as generated by tcpdump/libpcap tools

Returns:

array of compiled BPFInstructions that are more java friendly

Throws:

IllegalInstructionException - if an unrecognized instruction is encountered

compile

public BPFProgram compile(FilterTarget target)
                   throws FilterSyntaxError,
                          FilterNotFoundException

Description copied from interface: FilterExpression

Compiles the current expression for target and returns the compiled result

Specified by:

compile in interface FilterExpression<BPFProgram>

Overrides:

compile in class BPFFilter<ProtocolFilterTarget>

Parameters:

target - target for which to compile the expression

Returns:

result of the compilation

Throws:

FilterSyntaxError - any Syntax errors generated during the expression

FilterNotFoundException