pipes_introduction.md

Pipes Introduction

Pipes are not a well known Scapy feature. They can be used to chain actions such as sniffing, modifying and printing packets.

This trophy provides simple examples that builds on a silly one that does nothing.

Tasks

Task #1

• edit the pipe_trophy.py template
• add a ConsoleSink() named cs
• redirect clfs to cs (with the > operator)
• launch the script

Task #2

• remove the clfs to cs redirection
• add a TransformDrain() named td that uses transform_f()
• add a InjectSink() named ijs
• redirect clfs to td, and td to ijs
• test it:
  • sniff the network
  • launch the script

Task #3### T

• add a WrpcapSink() named ws
• redirect td to ws
• sniff the network and check for a newly created PCAP file
• launch the script

Hints

• in Scapy sources, the files pipetool.py and scapypipes.py give you all you need to know about pipes related objects
• a Sink is the last element of a pipe, a Drain 'manipulates' data and forwards it