netstack

package

v0.4.0 Latest Latest Go to latest Published: Feb 10, 2022 License: GPL-3.0 Imports: 22 Imported by: 0

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Repository

github.com/audibleblink/ligolo-ng

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Documentation ¶

Index ¶

func HandlePacket(nstack *stack.Stack, localConn TunConn, yamuxConn *yamux.Session)
func ProcessICMP(nstack *stack.Stack, pkt *stack.PacketBuffer)
type ConnPool
- func NewConnPool(size int) ConnPool
type ICMPConn
type NetStack
- func NewStack(tunName string, connPool *ConnPool) *NetStack
- func (s *NetStack) GetStack() *stack.Stack
- func (s *NetStack) SetConnPool(connPool *ConnPool)
type TCPConn
type TunConn
type UDPConn

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func HandlePacket ¶

func HandlePacket(nstack *stack.Stack, localConn TunConn, yamuxConn *yamux.Session)

func ProcessICMP ¶

func ProcessICMP(nstack *stack.Stack, pkt *stack.PacketBuffer)

ProcessICMP send back a ICMP echo reply from after receiving a echo request. This code come mostly from pkg/tcpip/network/ipv4/icmp.go

Types ¶

type ConnPool ¶

type ConnPool struct {
	CloseChan chan interface{}
	Pool      chan TunConn
	sync.Mutex
}

func NewConnPool ¶

func NewConnPool(size int) ConnPool

func (*ConnPool) Add ¶

func (p *ConnPool) Add(packet TunConn) error

func (*ConnPool) Close ¶

func (p *ConnPool) Close() error

func (*ConnPool) Closed ¶

func (p *ConnPool) Closed() bool

func (*ConnPool) Get ¶

func (p *ConnPool) Get() (TunConn, error)

type ICMPConn ¶

type ICMPConn struct {
	Request *stack.PacketBuffer
}

ICMPConn represents a ICMP Packet Buffer

type NetStack ¶

type NetStack struct {
	sync.Mutex
	// contains filtered or unexported fields
}

NetStack is the structure used to store the connection pool and the gvisor network stack

func NewStack ¶

func NewStack(tunName string, connPool *ConnPool) *NetStack

NewStack registers a new GVisor Network Stack

func (*NetStack) GetStack ¶

func (s *NetStack) GetStack() *stack.Stack

GetStack returns the current Gvisor stack.Stack object

func (*NetStack) SetConnPool ¶

func (s *NetStack) SetConnPool(connPool *ConnPool)

SetConnPool is used to change the current connPool. It must be used after switching Ligolo agents

type TCPConn ¶

type TCPConn struct {
	EndpointID stack.TransportEndpointID
	Request    *tcp.ForwarderRequest
}

TCPConn represents a TCP Forwarder connection

type TunConn ¶

type TunConn struct {
	Protocol tcpip.TransportProtocolNumber
	Handler  interface{}
}

func (TunConn) GetICMP ¶

func (t TunConn) GetICMP() ICMPConn

GetICMP returns the handler as a ICMPConn

func (TunConn) GetTCP ¶

func (t TunConn) GetTCP() TCPConn

GetTCP returns the handler as a TCPConn

func (TunConn) GetUDP ¶

func (t TunConn) GetUDP() UDPConn

GetUDP returns the handler as a UDPConn

func (TunConn) IsICMP ¶

func (t TunConn) IsICMP() bool

IsICMP check if the current TunConn is ICMP

func (TunConn) IsTCP ¶

func (t TunConn) IsTCP() bool

IsTCP check if the current TunConn is TCP

func (TunConn) IsUDP ¶

func (t TunConn) IsUDP() bool

IsUDP check if the current TunConn is UDP

func (TunConn) Terminate ¶

func (t TunConn) Terminate(reset bool)

Terminate is call when connections need to be terminated. For now, this is only useful for TCP connections

type UDPConn ¶

type UDPConn struct {
	EndpointID stack.TransportEndpointID
	Request    *udp.ForwarderRequest
}

UDPConn represents a UDP Forwarder connection

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
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