Refactoring

examples/multipro/echo.go

@@ -10,10 +10,9 @@ import (
 
 	uuid "github.com/google/uuid"
 	"github.com/ipfs/go-ipfs/thirdparty/assert"
-	p2p "github.com/libp2p/go-libp2p/examples/multipro/pb"
+	p2p "github.com/avive/go-libp2p/examples/multipro/pb"
 	protobufCodec "github.com/multiformats/go-multicodec/protobuf"
 	"gx/ipfs/QmRS46AyqtpJBsf1zmQdeizSDEzo1qkWR7rdEuPFAv8237/go-libp2p-host"
-	"gx/ipfs/QmXYjuNuxVzXKJCfWasQk1RqkhVLDM9jtUKhqc2WPQmFSB/go-libp2p-peer"
 )
 
 // pattern: /protocol-name/request-or-response-message/version
@@ -52,15 +51,15 @@ func (e EchoProtocol) onEchoRequest(s inet.Stream) {
 		log.Fatal("Failed to authenticate message")
 		return
 	} else {
-		log.Print("Authenticated request content was generated by claimed node :-)")
+		log.Print("Authenticated request content was generated by author node :-)")
 	}
 
-
 	log.Printf("%s: Sending echo response to %s. Message id: %s...", s.Conn().LocalPeer(), s.Conn().RemotePeer(), data.MessageData.Id)
 
 	// send response to the request using the message string he provided
+
 	resp := &p2p.EchoResponse{
-		MessageData: NewMessageData(peer.IDB58Encode(e.node.ID()), data.MessageData.Id, false),
+		MessageData: NewMessageData(e.node, data.MessageData.Id, false),
 		Message:     data.Message}
 
 	// sign the data
@@ -126,7 +125,7 @@ func (e EchoProtocol) Echo(host host.Host) bool {
 
 	// create message data
 	req := &p2p.EchoRequest{
-		MessageData: NewMessageData(peer.IDB58Encode(e.node.ID()), uuid.New().String(), false),
+		MessageData: NewMessageData(e.node, uuid.New().String(), false),
 		Message:     fmt.Sprintf("Echo from %s", e.node.ID())}
 
 	signature, err := e.node.signProtoMessage(req)

examples/multipro/main.go

@@ -27,6 +27,8 @@ func makeRandomNode(port int, done chan bool) *Node {
 	n, _ := swarm.NewNetwork(context.Background(), []ma.Multiaddr{listen}, pid, peerStore, nil)
 	host := bhost.New(n)
 
+	log.Printf("New host id (base58 multihash):%s, length:%d", host.ID().Pretty(), len(host.ID().Pretty()))
+
 	return NewNode(host, done)
 }
 

examples/multipro/node.go

 package main
 
 import (
+	"github.com/gogo/protobuf/proto"
 	host "gx/ipfs/QmRS46AyqtpJBsf1zmQdeizSDEzo1qkWR7rdEuPFAv8237/go-libp2p-host"
 	peer "gx/ipfs/QmXYjuNuxVzXKJCfWasQk1RqkhVLDM9jtUKhqc2WPQmFSB/go-libp2p-peer"
-	"github.com/gogo/protobuf/proto"
-
-	p2p "github.com/libp2p/go-libp2p/examples/multipro/pb"
+	p2p "github.com/avive/go-libp2p/examples/multipro/pb"
 	"log"
 )
 
+// Node type - a p2p host implementing one or more p2p protocols
+type Node struct {
+	host.Host     // lib-p2p host
+	*PingProtocol // ping protocol impl
+	*EchoProtocol // echo protocol impl
+	// add other protocols here...
+}
+
+// create a new node with its implemented protocols
+func NewNode(host host.Host, done chan bool) *Node {
+	node := &Node{Host: host}
+	node.PingProtocol = NewPingProtocol(node, done)
+	node.EchoProtocol = NewEchoProtocol(node, done)
+	return node
+}
+
 func (n Node) authenticateMessage(message proto.Message, data *p2p.MessageData) bool {
 
 	// store a temp ref to sig and remove it from data
 	sign := data.Sign
 	data.Sign = ""
 
-	//log.Print("Signature: %s", []byte(sign))
-
 	// marshall data without the sig to binary format
 	bin, err := proto.Marshal(message)
 	if err != nil {
-		// todo: log
+		log.Fatal(err, "failed to marshal pb message")
 		return false
 	}
 
@@ -28,13 +41,12 @@ func (n Node) authenticateMessage(message proto.Message, data *p2p.MessageData)
 	data.Sign = sign
 
 	peerId, err := peer.IDB58Decode(data.NodeId)
-
 	if err != nil {
-		log.Fatal(err, "Failed to decode node id")
+		log.Fatal(err, "Failed to decode node id from base58")
 		return false
 	}
 
-	return n.verifyData(bin, []byte(sign), peerId)
+	return n.verifyData(bin, []byte(sign), peerId, []byte(data.NodePubKey))
 }
 
 func (n Node) signProtoMessage(message proto.Message) ([]byte, error) {
@@ -52,25 +64,24 @@ func (n Node) signData(data []byte) ([]byte, error) {
 }
 
 // precondition: we have info about the signer peer in the local peer store
-func (n Node) verifyData(data []byte, signature []byte, peerId peer.ID) bool {
+func (n Node) verifyData(data []byte, signature []byte, peerId peer.ID, pubKeyData []byte) bool {
+
+	// todo: restore pub key from message and use it
 	key := n.Peerstore().PubKey(peerId)
-	//log.Print ("%s %s %s", peerId, key, peerId.String())
-	res, err := key.Verify(data, signature)
-	return res == true && err == nil
-}
 
-// Node type - a host with one or more implemented p2p protocols
-type Node struct {
-	host.Host     // lib-p2p host
-	*PingProtocol // ping protocol impl
-	*EchoProtocol // echo protocol impl
-	// add other protocols here...
-}
+	//todo: fix this
+	//key, err := key.UnmarshalPublicKey(pubKeyData)
 
-// create a new node with its implemented protocols
-func NewNode(host host.Host, done chan bool) *Node {
-	node := &Node{Host: host}
-	node.PingProtocol = NewPingProtocol(node, done)
-	node.EchoProtocol = NewEchoProtocol(node, done)
-	return node
+	if key == nil {
+		log.Fatal("Failed to find public key for %s in local peer store.", peerId.String())
+		return false
+	}
+
+	res, err := key.Verify(data, signature)
+	if err != nil {
+		log.Fatal("Error authenticating data")
+		return false
+	}
+
+	return res
 }

examples/multipro/pb/p2p.pb.go

@@ -39,7 +39,8 @@ type MessageData struct {
 	Id            string `protobuf:"bytes,3,opt,name=id" json:"id,omitempty"`
 	Gossip        bool   `protobuf:"varint,4,opt,name=gossip" json:"gossip,omitempty"`
 	NodeId        string `protobuf:"bytes,5,opt,name=nodeId" json:"nodeId,omitempty"`
-	Sign          string `protobuf:"bytes,6,opt,name=sign" json:"sign,omitempty"`
+	NodePubKey    string `protobuf:"bytes,6,opt,name=nodePubKey" json:"nodePubKey,omitempty"`
+	Sign          string `protobuf:"bytes,7,opt,name=sign" json:"sign,omitempty"`
 }
 
 func (m *MessageData) Reset()                    { *m = MessageData{} }
@@ -82,6 +83,13 @@ func (m *MessageData) GetNodeId() string {
 	return ""
 }
 
+func (m *MessageData) GetNodePubKey() string {
+	if m != nil {
+		return m.NodePubKey
+	}
+	return ""
+}
+
 func (m *MessageData) GetSign() string {
 	if m != nil {
 		return m.Sign
@@ -202,21 +210,22 @@ func init() {
 func init() { proto.RegisterFile("p2p.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
-	// 244 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x8f, 0x31, 0x4f, 0xc3, 0x30,
-	0x10, 0x85, 0xe5, 0xb4, 0x04, 0x72, 0xa6, 0x0c, 0x37, 0x20, 0x0b, 0x31, 0x44, 0x11, 0x43, 0xa6,
-	0x0c, 0x61, 0x65, 0x84, 0x81, 0x01, 0x09, 0x79, 0x60, 0x0f, 0xc9, 0x11, 0x2c, 0x35, 0xb6, 0xe9,
-	0x99, 0x9f, 0xc4, 0xff, 0x44, 0x5c, 0x83, 0xda, 0xfe, 0x80, 0x76, 0xb2, 0xdf, 0xd3, 0xb3, 0xdf,
-	0xfb, 0xa0, 0x88, 0x6d, 0x6c, 0xe2, 0x26, 0xa4, 0x80, 0x2b, 0x39, 0xfa, 0xb0, 0xe6, 0x26, 0xb6,
-	0xb1, 0xfa, 0x51, 0xa0, 0x5f, 0x88, 0xb9, 0x1b, 0xe9, 0xb1, 0x4b, 0x1d, 0xde, 0xc1, 0xaa, 0x5f,
-	0x3b, 0xf2, 0xe9, 0x8d, 0x36, 0xec, 0x82, 0x37, 0xaa, 0x54, 0x75, 0x61, 0x0f, 0x4d, 0xbc, 0x85,
-	0x22, 0xb9, 0x89, 0x38, 0x75, 0x53, 0x34, 0x59, 0xa9, 0xea, 0x85, 0xdd, 0x19, 0x78, 0x05, 0x99,
-	0x1b, 0xcc, 0x42, 0x1e, 0x66, 0x6e, 0xc0, 0x6b, 0xc8, 0xc7, 0xc0, 0xec, 0xa2, 0x59, 0x96, 0xaa,
-	0xbe, 0xb0, 0xb3, 0xfa, 0xf3, 0x7d, 0x18, 0xe8, 0x79, 0x30, 0x67, 0x92, 0x9d, 0x15, 0x22, 0x2c,
-	0xd9, 0x8d, 0xde, 0xe4, 0xe2, 0xca, 0xbd, 0x22, 0xd0, 0xaf, 0xce, 0x8f, 0x96, 0xbe, 0xbe, 0x89,
-	0x13, 0x3e, 0x80, 0x9e, 0x76, 0xab, 0x65, 0xa4, 0x6e, 0x6f, 0x9a, 0x03, 0xb6, 0x66, 0x8f, 0xcb,
-	0xee, 0xc7, 0xd1, 0xc0, 0xf9, 0x2c, 0x65, 0x7c, 0x61, 0xff, 0x65, 0xf5, 0x01, 0x97, 0xdb, 0x1a,
-	0x8e, 0xc1, 0x33, 0x1d, 0xad, 0x87, 0x40, 0x3f, 0xf5, 0x9f, 0xe1, 0x04, 0x38, 0xdb, 0x9a, 0xe3,
-	0xe2, 0xbc, 0xe7, 0xf2, 0xc3, 0xfd, 0x6f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xb9, 0xf8, 0x88, 0xca,
-	0x68, 0x02, 0x00, 0x00,
+	// 261 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x8f, 0x31, 0x4f, 0xfb, 0x30,
+	0x10, 0xc5, 0xe5, 0xb4, 0xff, 0xf4, 0x9f, 0x33, 0x65, 0xb8, 0x01, 0x59, 0x08, 0xa1, 0x28, 0x62,
+	0xc8, 0x94, 0x21, 0xac, 0x8c, 0x30, 0x20, 0x84, 0x54, 0x79, 0x60, 0x4f, 0x93, 0x23, 0x58, 0x6a,
+	0x6c, 0xd3, 0x73, 0x07, 0x3e, 0x20, 0xdf, 0x0b, 0xd5, 0x0d, 0x6a, 0xfa, 0x01, 0xca, 0xe4, 0x7b,
+	0xef, 0x9e, 0xef, 0xe9, 0x07, 0x99, 0xaf, 0x7d, 0xe5, 0xb7, 0x2e, 0x38, 0x5c, 0xc6, 0xa7, 0x75,
+	0x1b, 0xae, 0x7c, 0xed, 0x8b, 0x6f, 0x01, 0xf2, 0x95, 0x98, 0x9b, 0x9e, 0x1e, 0x9b, 0xd0, 0xe0,
+	0x1d, 0x2c, 0xdb, 0x8d, 0x21, 0x1b, 0xde, 0x68, 0xcb, 0xc6, 0x59, 0x25, 0x72, 0x51, 0x66, 0xfa,
+	0xd4, 0xc4, 0x1b, 0xc8, 0x82, 0x19, 0x88, 0x43, 0x33, 0x78, 0x95, 0xe4, 0xa2, 0x9c, 0xe9, 0xa3,
+	0x81, 0x97, 0x90, 0x98, 0x4e, 0xcd, 0xe2, 0xc7, 0xc4, 0x74, 0x78, 0x05, 0x69, 0xef, 0x98, 0x8d,
+	0x57, 0xf3, 0x5c, 0x94, 0xff, 0xf5, 0xa8, 0xf6, 0xbe, 0x75, 0x1d, 0x3d, 0x77, 0xea, 0x5f, 0xcc,
+	0x8e, 0x0a, 0x6f, 0x01, 0xf6, 0xd3, 0x6a, 0xb7, 0x7e, 0xa1, 0x2f, 0x95, 0xc6, 0xdd, 0xc4, 0x41,
+	0x84, 0x39, 0x9b, 0xde, 0xaa, 0x45, 0xdc, 0xc4, 0xb9, 0x20, 0x90, 0x2b, 0x63, 0x7b, 0x4d, 0x9f,
+	0x3b, 0xe2, 0x80, 0x0f, 0x20, 0x87, 0x23, 0x55, 0x84, 0x90, 0xf5, 0x75, 0x75, 0xc2, 0x5e, 0x4d,
+	0xb8, 0xf5, 0x34, 0x8e, 0x0a, 0x16, 0xa3, 0x8c, 0x70, 0x99, 0xfe, 0x95, 0xc5, 0x3b, 0x5c, 0x1c,
+	0x6a, 0xd8, 0x3b, 0xcb, 0x74, 0xb6, 0x1e, 0x02, 0xf9, 0xd4, 0x7e, 0xb8, 0x3f, 0xc0, 0x39, 0xd4,
+	0x9c, 0x17, 0x67, 0x9d, 0xc6, 0x0b, 0xf7, 0x3f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x14, 0x4d, 0xf8,
+	0x0c, 0x88, 0x02, 0x00, 0x00,
 }

examples/multipro/pb/p2p.proto

@@ -9,8 +9,9 @@ message MessageData {
     int64 timestamp = 2;     // unix time
     string id = 3;           // allows requesters to use request data when processing a response
     bool gossip = 4;         // true to have receiver peer gossip the message to neighbors
-    string nodeId = 5;    // id of node that created the message (not the peer that may have sent it)
-    bytes sign = 6;      // signature of message data + method specific data by message authoring node
+    string nodeId = 5;       // id of node that created the message (not the peer that may have sent it). =base58(mh(sha256(nodePubKey)))
+    string nodePubKey = 6;    // node's Secp256k1 public key bytes (32bytes)
+    string sign = 7;          // signature of message data + method specific data by message authoring node
 }
 
 //// ping protocol

examples/multipro/ping.go

@@ -9,10 +9,9 @@ import (
 	inet "gx/ipfs/QmbD5yKbXahNvoMqzeuNyKQA9vAs9fUvJg2GXeWU1fVqY5/go-libp2p-net"
 
 	uuid "github.com/google/uuid"
-	p2p "github.com/libp2p/go-libp2p/examples/multipro/pb"
+	p2p "github.com/avive/go-libp2p/examples/multipro/pb"
 	protobufCodec "github.com/multiformats/go-multicodec/protobuf"
 	"gx/ipfs/QmRS46AyqtpJBsf1zmQdeizSDEzo1qkWR7rdEuPFAv8237/go-libp2p-host"
-	"gx/ipfs/QmXYjuNuxVzXKJCfWasQk1RqkhVLDM9jtUKhqc2WPQmFSB/go-libp2p-peer"
 )
 
 // pattern: /protocol-name/request-or-response-message/version
@@ -59,7 +58,7 @@ func (p PingProtocol) onPingRequest(s inet.Stream) {
 	// generate response message
 	log.Printf("%s: Sending ping response to %s. Message id: %s...", s.Conn().LocalPeer(), s.Conn().RemotePeer(), data.MessageData.Id)
 
-	resp := &p2p.PingResponse{MessageData: NewMessageData(peer.IDB58Encode(p.node.ID()), data.MessageData.Id, false),
+	resp := &p2p.PingResponse{MessageData: NewMessageData(p.node, data.MessageData.Id, false),
 		Message: fmt.Sprintf("Ping response from %s", p.node.ID())}
 
 	// sign the data
@@ -122,7 +121,7 @@ func (p PingProtocol) Ping(host host.Host) bool {
 	log.Printf("%s: Sending ping to: %s....", p.node.ID(), host.ID())
 
 	// create message data
-	req := &p2p.PingRequest{MessageData: NewMessageData(peer.IDB58Encode(p.node.ID()), uuid.New().String(), false),
+	req := &p2p.PingRequest{MessageData: NewMessageData(p.node, uuid.New().String(), false),
 		Message: fmt.Sprintf("Ping from %s", p.node.ID())}
 
 	// sign the data

examples/multipro/protocol.go

@@ -2,14 +2,13 @@ package main
 
 import (
 	"bufio"
-	p2p "github.com/libp2p/go-libp2p/examples/multipro/pb"
+	p2p "github.com/avive/go-libp2p/examples/multipro/pb"
 	protobufCodec "github.com/multiformats/go-multicodec/protobuf"
 	inet "gx/ipfs/QmbD5yKbXahNvoMqzeuNyKQA9vAs9fUvJg2GXeWU1fVqY5/go-libp2p-net"
 	"log"
 	"time"
-	//host "gx/ipfs/QmRS46AyqtpJBsf1zmQdeizSDEzo1qkWR7rdEuPFAv8237/go-libp2p-host"
-	//"bytes"
 	"github.com/gogo/protobuf/proto"
+	"gx/ipfs/QmXYjuNuxVzXKJCfWasQk1RqkhVLDM9jtUKhqc2WPQmFSB/go-libp2p-peer"
 )
 
 // node version
@@ -31,11 +30,19 @@ func sendProtoMessage(data proto.Message, s inet.Stream) bool {
 }
 
 // helper method - generate message data shared between all node's p2p protocols
-// nodeId - message author id
 // messageId - unique for requests, copied from request for responses
-func NewMessageData(nodeId string, messageId string, gossip bool) *p2p.MessageData {
+func NewMessageData(node *Node, messageId string, gossip bool) *p2p.MessageData {
+
+	// this creates a protobuf data for a public key
+	nodePubKey, err := node.Peerstore().PubKey(node.ID()).Bytes()
+
+	if err != nil {
+		panic("Failed to get public key for sender node from peer store.")
+	}
+
 	return &p2p.MessageData{ClientVersion: clientVersion,
-		NodeId:    nodeId,
+		NodeId:    peer.IDB58Encode(node.ID()),
+		NodePubKey: string(nodePubKey),
 		Timestamp: time.Now().Unix(),
 		Id:        messageId,
 		Gossip:    gossip}