libs5-go/protocol/signed/handshake_done.go

149 lines
3.0 KiB
Go

package signed
import (
"bytes"
"errors"
"fmt"
"git.lumeweb.com/LumeWeb/libs5-go/interfaces"
"git.lumeweb.com/LumeWeb/libs5-go/net"
"git.lumeweb.com/LumeWeb/libs5-go/protocol/base"
"git.lumeweb.com/LumeWeb/libs5-go/types"
"git.lumeweb.com/LumeWeb/libs5-go/utils"
"github.com/vmihailenco/msgpack/v5"
"net/url"
)
var _ base.IncomingMessageTyped = (*HandshakeDone)(nil)
var _ base.EncodeableMessage = (*HandshakeDone)(nil)
type HandshakeDone struct {
challenge []byte
networkId string
base.IncomingMessageTypedImpl
base.IncomingMessageHandler
supportedFeatures int
connectionUris []*url.URL
handshake []byte
}
func NewHandshakeDoneRequest(handshake []byte, supportedFeatures int, connectionUris []*url.URL) *HandshakeDone {
return &HandshakeDone{
handshake: handshake,
supportedFeatures: supportedFeatures,
connectionUris: connectionUris,
}
}
func (m HandshakeDone) EncodeMsgpack(enc *msgpack.Encoder) error {
err := enc.EncodeUint(uint64(types.ProtocolMethodHandshakeDone))
if err != nil {
return err
}
err = enc.EncodeBytes(m.handshake)
if err != nil {
return err
}
err = enc.EncodeInt(int64(m.supportedFeatures))
if err != nil {
return err
}
err = utils.EncodeMsgpackArray(enc, m.connectionUris)
if err != nil {
return err
}
return nil
}
func (m *HandshakeDone) SetChallenge(challenge []byte) {
m.challenge = challenge
}
func (m *HandshakeDone) SetNetworkId(networkId string) {
m.networkId = networkId
}
func NewHandshakeDone() *HandshakeDone {
return &HandshakeDone{challenge: nil, networkId: "", supportedFeatures: -1}
}
func (h HandshakeDone) HandleMessage(node interfaces.Node, peer net.Peer, verifyId bool) error {
if !node.IsStarted() {
err := peer.End()
if err != nil {
return nil
}
return nil
}
if !bytes.Equal(peer.Challenge(), h.challenge) {
return errors.New("Invalid challenge")
}
nodeId := h.IncomingMessage().(*SignedMessage).NodeId()
if !verifyId {
peer.SetId(nodeId)
} else {
if !peer.Id().Equals(nodeId) {
return fmt.Errorf("Invalid transports id on initial list")
}
}
peer.SetConnected(true)
if h.supportedFeatures != types.SupportedFeatures {
return fmt.Errorf("Remote node does not support required features")
}
err := node.Services().P2P().AddPeer(peer)
if err != nil {
return err
}
peer.SetConnectionURIs(h.connectionUris)
peerId, err := peer.Id().ToString()
if err != nil {
return err
}
node.Logger().Info(fmt.Sprintf("[+] %s (%s)", peerId, peer.RenderLocationURI()))
err = node.Services().P2P().SendPublicPeersToPeer(peer, []net.Peer{peer})
if err != nil {
return err
}
return nil
}
func (h *HandshakeDone) DecodeMessage(dec *msgpack.Decoder) error {
challenge, err := dec.DecodeBytes()
if err != nil {
return err
}
h.challenge = challenge
supportedFeatures, err := dec.DecodeInt()
if err != nil {
return err
}
h.supportedFeatures = supportedFeatures
connectionUris, err := utils.DecodeMsgpackURLArray(dec)
if err != nil {
return err
}
h.connectionUris = connectionUris
return nil
}