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Published: Jul 8, 2020 | License: Apache-2.0 | Module:


Package packetgen "PacketGen" is a Packet Generator library Current version: V1.0, Updates are coming soon



var PacketFlowTemplate1 [][]byte

PacketFlowTemplate1 is a good hardcoded template

var PacketFlowTemplate2 [][]byte

PacketFlowTemplate2 has a two complete TCP flow

var PacketFlowTemplate3 [][]byte

PacketFlowTemplate3 has a two intervened TCP flows

type EthernetPacketManipulator

type EthernetPacketManipulator interface {
	//Used to create an Ethernet layer
	AddEthernetLayer(srcMACstr string, dstMACstr string) error
	//Used to return Ethernet packet created
	GetEthernetPacket() layers.Ethernet

EthernetPacketManipulator interface is used to create/manipulate Ethernet packet

type IPPacketManipulator

type IPPacketManipulator interface {
	//Used to create an IP layer
	AddIPLayer(srcIPstr string, dstIPstr string) error
	//Used to return IP packet created
	GetIPPacket() layers.IPv4
	//Used to return IP checksum
	GetIPChecksum() uint16

IPPacketManipulator interface is used to create/manipulate IP packet

type Packet

type Packet struct {
	// contains filtered or unexported fields

Packet is a custom type which holds the packets and implements PacketManipulator

func (*Packet) AddEthernetLayer

func (p *Packet) AddEthernetLayer(srcMACstr string, dstMACstr string) error

AddEthernetLayer creates an Ethernet layer

func (*Packet) AddIPLayer

func (p *Packet) AddIPLayer(srcIPstr string, dstIPstr string) error

AddIPLayer creates an IP layer

func (*Packet) AddPacket

func (p *Packet) AddPacket(packet gopacket.Packet)

AddPacket is a helper method to add the packet from the template to the struct internal struct field

func (*Packet) AddTCPLayer

func (p *Packet) AddTCPLayer(srcPort layers.TCPPort, dstPort layers.TCPPort) error

AddTCPLayer creates a TCP layer

func (*Packet) DecodePacket

func (p *Packet) DecodePacket() PacketManipulator

DecodePacket returns decoded packet which implements PacketManipulator

func (*Packet) GetEthernetPacket

func (p *Packet) GetEthernetPacket() layers.Ethernet

GetEthernetPacket returns the ethernet layer created

func (*Packet) GetIPChecksum

func (p *Packet) GetIPChecksum() uint16

GetIPChecksum returns IP cheksum

func (*Packet) GetIPPacket

func (p *Packet) GetIPPacket() layers.IPv4

GetIPPacket returns IP checksum

func (*Packet) GetTCPAck

func (p *Packet) GetTCPAck() bool

GetTCPAck returns TCP ACK flag

func (*Packet) GetTCPAcknowledgementNumber

func (p *Packet) GetTCPAcknowledgementNumber() uint32

GetTCPAcknowledgementNumber returns TCP Acknowledgement number

func (*Packet) GetTCPChecksum

func (p *Packet) GetTCPChecksum() uint16

GetTCPChecksum returns TCP checksum

func (*Packet) GetTCPFin

func (p *Packet) GetTCPFin() bool

GetTCPFin returns TCP FIN flag

func (*Packet) GetTCPPacket

func (p *Packet) GetTCPPacket() layers.TCP

GetTCPPacket returns created TCP packet

func (*Packet) GetTCPSequenceNumber

func (p *Packet) GetTCPSequenceNumber() uint32

GetTCPSequenceNumber returns TCP Sequence number

func (*Packet) GetTCPSyn

func (p *Packet) GetTCPSyn() bool

GetTCPSyn returns TCP SYN flag

func (*Packet) GetTCPWindow

func (p *Packet) GetTCPWindow() uint16

GetTCPWindow returns TCP Window

func (*Packet) NewTCPPayload

func (p *Packet) NewTCPPayload(newPayload string) error

NewTCPPayload adds new payload to TCP layer

func (*Packet) SetTCPAck

func (p *Packet) SetTCPAck()

SetTCPAck changes the TCP ACK flag to true

func (*Packet) SetTCPAcknowledgementNumber

func (p *Packet) SetTCPAcknowledgementNumber(ackNum uint32)

SetTCPAcknowledgementNumber changes TCP Acknowledgement number

func (*Packet) SetTCPCwr

func (p *Packet) SetTCPCwr()

SetTCPCwr changes the TCP CWR flag to true

func (*Packet) SetTCPEce

func (p *Packet) SetTCPEce()

SetTCPEce changes the TCP ECE flag to true

func (*Packet) SetTCPFin

func (p *Packet) SetTCPFin()

SetTCPFin changes the TCP FIN flag to true

func (*Packet) SetTCPPsh

func (p *Packet) SetTCPPsh()

SetTCPPsh changes the TCP PSH flag to true

func (*Packet) SetTCPRst

func (p *Packet) SetTCPRst()

SetTCPRst changes the TCP RST flag to true

func (*Packet) SetTCPSequenceNumber

func (p *Packet) SetTCPSequenceNumber(seqNum uint32)

SetTCPSequenceNumber changes TCP sequence number

func (*Packet) SetTCPSyn

func (p *Packet) SetTCPSyn()

SetTCPSyn changes the TCP SYN flag to true

func (*Packet) SetTCPSynAck

func (p *Packet) SetTCPSynAck()

SetTCPSynAck changes the TCP SYN and ACK flag to true

func (*Packet) SetTCPUrg

func (p *Packet) SetTCPUrg()

SetTCPUrg changes the TCP URG flag to true

func (*Packet) SetTCPWindow

func (p *Packet) SetTCPWindow(window uint16)

SetTCPWindow changes the TCP window

func (*Packet) ToBytes

func (p *Packet) ToBytes() ([]byte, error)

ToBytes creates a packet buffer and converts it into a complete packet with ethernet, IP and TCP (with options)

type PacketFlow

type PacketFlow struct {
	// contains filtered or unexported fields

PacketFlow is a custom type which holds the packet attributes and the flow Implements PacketFlowManipulator interface

func (*PacketFlow) AppendPacket

func (p *PacketFlow) AppendPacket(pm PacketManipulator) int

AppendPacket adds the packet to Flow field of PacketFlowManipulator interface

func (*PacketFlow) GenerateTCPFlow

func (p *PacketFlow) GenerateTCPFlow(pt PacketFlowType) (PacketFlowManipulator, error)

GenerateTCPFlow returns an array of PacketFlowManipulator interface

func (*PacketFlow) GenerateTCPFlowPayload

func (p *PacketFlow) GenerateTCPFlowPayload(newPayload string) PacketFlowManipulator

GenerateTCPFlowPayload Coming soon...

func (*PacketFlow) GetAckPackets

func (p *PacketFlow) GetAckPackets() PacketFlowManipulator

GetAckPackets returns the Ack Packets

func (*PacketFlow) GetFirstAckPacket

func (p *PacketFlow) GetFirstAckPacket() PacketManipulator

GetFirstAckPacket return first Ack packet from the flow

func (*PacketFlow) GetFirstSynAckPacket

func (p *PacketFlow) GetFirstSynAckPacket() PacketManipulator

GetFirstSynAckPacket return first SynAck packet from the flow

func (*PacketFlow) GetFirstSynPacket

func (p *PacketFlow) GetFirstSynPacket() PacketManipulator

GetFirstSynPacket return first Syn packet from the flow

func (*PacketFlow) GetNthPacket

func (p *PacketFlow) GetNthPacket(index int) PacketManipulator

GetNthPacket returns the packet requested by the user from the array

func (*PacketFlow) GetNumPackets

func (p *PacketFlow) GetNumPackets() int

GetNumPackets returns an array of packets

func (*PacketFlow) GetSynAckPackets

func (p *PacketFlow) GetSynAckPackets() PacketFlowManipulator

GetSynAckPackets returns the SynAck packets

func (*PacketFlow) GetSynPackets

func (p *PacketFlow) GetSynPackets() PacketFlowManipulator

GetSynPackets returns the SYN packets

func (*PacketFlow) GetUptoFirstAckPacket

func (p *PacketFlow) GetUptoFirstAckPacket() PacketFlowManipulator

GetUptoFirstAckPacket will return packets upto first Ack packet

func (*PacketFlow) GetUptoFirstSynAckPacket

func (p *PacketFlow) GetUptoFirstSynAckPacket() PacketFlowManipulator

GetUptoFirstSynAckPacket will return packets upto first SynAck packet

type PacketFlowManipulator

type PacketFlowManipulator interface {
	//Used to create a flow of TCP packets
	GenerateTCPFlow(pt PacketFlowType) (PacketFlowManipulator, error)
	//Used to return first TCP Syn packet
	GetFirstSynPacket() PacketManipulator
	//Used to return first TCP SynAck packet
	GetFirstSynAckPacket() PacketManipulator
	//Used to return first TCP Ack packet
	GetFirstAckPacket() PacketManipulator
	//Used to return all the TCP Syn packets from the flow
	GetSynPackets() PacketFlowManipulator
	//Used to return all the TCP SynAck packets from the flow
	GetSynAckPackets() PacketFlowManipulator
	//Used to return all the TCP Ack packets from the flow
	GetAckPackets() PacketFlowManipulator
	//Used to return all the packets upto first TCP SynAck packet from the flow
	GetUptoFirstSynAckPacket() PacketFlowManipulator
	//Used to return all the packets upto first TCP Ack packet from the flow
	GetUptoFirstAckPacket() PacketFlowManipulator
	//Used to return Nth packet from the flow
	GetNthPacket(index int) PacketManipulator
	//Used to return length of the flow
	GetNumPackets() int
	//Used to add a new packet to the flow
	AppendPacket(p PacketManipulator) int

PacketFlowManipulator is an interface for packet flow manipulations Used to create/manipulate packet flows

func NewPacketFlow

func NewPacketFlow(smac string, dmac string, sip string, dip string, sport layers.TCPPort, dport layers.TCPPort) PacketFlowManipulator

NewPacketFlow returns PacketFlow struct which implements PacketFlowManipulator

func NewTemplateFlow

func NewTemplateFlow() PacketFlowManipulator

NewTemplateFlow will return flow of packets which implements PacketManipulator

type PacketFlowType

type PacketFlowType uint8

PacketFlowType type for different types of flows

const (
	//PacketFlowTypeGenerateGoodFlow is used to generate a good floe
	PacketFlowTypeGenerateGoodFlow PacketFlowType = iota
	//PacketFlowTypeGoodFlowTemplate will have a good flow from a hardcoded template
	//PacketFlowTypeMultipleGoodFlow will have two flows
	//PacketFlowTypeMultipleIntervenedFlow will have two flows intervened to eachothers

type PacketHelper

type PacketHelper interface {
	ToBytes() ([]byte, error)
	AddPacket(packet gopacket.Packet)
	DecodePacket() PacketManipulator

PacketHelper interface is a helper for packets and packet flows Optional: not needed for actual usage

type PacketManipulator

type PacketManipulator interface {

PacketManipulator is an interface for packet manipulations Composition of Ethernet, IP and TCP Manipulator interface

func NewPacket

func NewPacket() PacketManipulator

NewPacket returns a packet strut which implements PacketManipulator

type TCPPacketManipulator

type TCPPacketManipulator interface {
	//Used to create a TCP layer
	AddTCPLayer(srcPort layers.TCPPort, dstPort layers.TCPPort) error
	//Used to return TCP packet
	GetTCPPacket() layers.TCP
	//Used to return TCP Sequence number
	GetTCPSequenceNumber() uint32
	//Used to return TCP Acknowledgement number number
	GetTCPAcknowledgementNumber() uint32
	//Used to return TCP window
	GetTCPWindow() uint16
	//Used to return TCP Syn flag
	GetTCPSyn() bool
	//Used to return TCP Ack flag
	GetTCPAck() bool
	//Used to return TCP Fin flag
	GetTCPFin() bool
	//Used to return TCP Checksum
	GetTCPChecksum() uint16
	//Used to set TCP Sequence number
	SetTCPSequenceNumber(seqNum uint32)
	//Used to set TCP Acknowledgement number
	SetTCPAcknowledgementNumber(ackNum uint32)
	//Used to set TCP Window
	SetTCPWindow(window uint16)
	//Used to set TCP Syn flag to true
	//Used to set TCP Syn and Ack flag to true
	//Used to set TCP Ack flag to true
	//Used to set TCP Cwr flag to true
	//Used to set TCP Ece flag to true
	//Used to set TCP Urg flag to true
	//Used to set TCP Psh flag to true
	//Used to set TCP Rst flag to true
	//Used to set TCP Fin flag to true
	//Used to add TCP Payload
	NewTCPPayload(newPayload string) error

TCPPacketManipulator interface is used to create/manipulate TCP packet

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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