// NewIPEndpoint creates a new IP (v4 or v6) endpoint from a net.IP address.
// It returns gopacket.InvalidEndpoint if the IP address is invalid.
func NewIPEndpoint(a net.IP) gopacket.Endpoint {
switch len(a) {
case 4:
return gopacket.NewEndpoint(EndpointIPv4, []byte(a))
case 16:
return gopacket.NewEndpoint(EndpointIPv6, []byte(a))
}
return gopacket.InvalidEndpoint
}
import (
"encoding/binary"
"errors"
"github.com/tsg/gopacket"
)
// PPP is the layer for PPP encapsulation headers.
type PPP struct {
BaseLayer
PPPType PPPType
}
// PPPEndpoint is a singleton endpoint for PPP. Since there is no actual
// addressing for the two ends of a PPP connection, we use a singleton value
// named 'point' for each endpoint.
var PPPEndpoint = gopacket.NewEndpoint(EndpointPPP, nil)
// PPPFlow is a singleton flow for PPP. Since there is no actual addressing for
// the two ends of a PPP connection, we use a singleton value to represent the
// flow for all PPP connections.
var PPPFlow = gopacket.NewFlow(EndpointPPP, nil, nil)
// LayerType returns LayerTypePPP
func (p *PPP) LayerType() gopacket.LayerType { return LayerTypePPP }
// LinkFlow returns PPPFlow.
func (p *PPP) LinkFlow() gopacket.Flow { return PPPFlow }
func decodePPP(data []byte, p gopacket.PacketBuilder) error {
ppp := &PPP{}
if data[0]&0x1 == 0 {
// ForwardEndpoint returns the EthernetCTPForwardData ForwardAddress as an endpoint.
func (c *EthernetCTPForwardData) ForwardEndpoint() gopacket.Endpoint {
return gopacket.NewEndpoint(EndpointMAC, c.ForwardAddress)
}
// NewRUDPPortEndpoint returns an endpoint based on a RUDP port.
func NewRUDPPortEndpoint(p RUDPPort) gopacket.Endpoint {
return gopacket.NewEndpoint(EndpointRUDPPort, []byte{byte(p)})
}
func newPortEndpoint(t gopacket.EndpointType, p uint16) gopacket.Endpoint {
return gopacket.NewEndpoint(t, []byte{byte(p >> 8), byte(p)})
}
// NewMACEndpoint returns a new MAC address endpoint.
func NewMACEndpoint(a net.HardwareAddr) gopacket.Endpoint {
return gopacket.NewEndpoint(EndpointMAC, []byte(a))
}