[c][p] Local ip probing for clients

- pAPI allow to send multiple IPs
- Rebuild of protobuf files with updated protoc
- Send client interface ips
- Remove user ip & port from mongo
- Fix uint port issue

dfssc/api/client.pb.go

@@ -262,29 +262,27 @@ var _Client_serviceDesc = grpc.ServiceDesc{
 }
 
 var fileDescriptor0 = []byte{
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 }

dfssc/sign/starter.go

@@ -103,9 +103,15 @@ func NewSignatureManager(passphrase string, c *contract.JSON) (*SignatureManager
 
 // ConnectToPeers tries to fetch the list of users for this contract, and tries to establish a connection to each peer.
 func (m *SignatureManager) ConnectToPeers() error {
+	localIps, err := net.ExternalInterfaceAddr()
+	if err != nil {
+		return err
+	}
+
 	stream, err := m.platform.JoinSignature(context.Background(), &pAPI.JoinSignatureRequest{
 		ContractUuid: m.contract.UUID,
 		Port:         uint32(viper.GetInt("local_port")),
+		Ip:           localIps,
 	})
 	if err != nil {
 		return err
@@ -142,11 +148,19 @@ func (m *SignatureManager) addPeer(user *pAPI.User) (ready bool, err error) {
 		return // Ignore if unknown
 	}
 
-	addrPort := user.Ip + ":" + strconv.Itoa(int(user.Port))
-	m.OnSignerStatusUpdate(user.Email, StatusConnecting, addrPort)
+	var conn *grpc.ClientConn
+	for _, ip := range user.Ip {
+		addrPort := ip + ":" + strconv.Itoa(int(user.Port))
+		m.OnSignerStatusUpdate(user.Email, StatusConnecting, addrPort)
+
+		// This is an certificate authentificated TLS connection
+		conn, err = net.Connect(addrPort, m.auth.Cert, m.auth.Key, m.auth.CA, user.KeyHash)
+		if err == nil {
+
+			break
+		}
+	}
 
-	// This is an certificate authentificated TLS connection
-	conn, err := net.Connect(addrPort, m.auth.Cert, m.auth.Key, m.auth.CA, user.KeyHash)
 	if err != nil {
 		m.OnSignerStatusUpdate(user.Email, StatusError, err.Error())
 		return false, err

dfssd/api/demonstrator.pb.go

@@ -135,16 +135,15 @@ var _Demonstrator_serviceDesc = grpc.ServiceDesc{
 }
 
 var fileDescriptor0 = []byte{
-	// 167 bytes of a gzipped FileDescriptorProto
+	// 159 bytes of a gzipped FileDescriptorProto
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 }

dfssp/api/platform.pb.go

@@ -192,6 +192,8 @@ type JoinSignatureRequest struct {
 	ContractUuid string `protobuf:"bytes,1,opt,name=contractUuid" json:"contractUuid,omitempty"`
 	// / The open port for P2P communication of the client
 	Port uint32 `protobuf:"varint,2,opt,name=port" json:"port,omitempty"`
+	// / The offered ips for P2P communication of the client
+	Ip []string `protobuf:"bytes,3,rep,name=ip" json:"ip,omitempty"`
 }
 
 func (m *JoinSignatureRequest) Reset()                    { *m = JoinSignatureRequest{} }
@@ -235,7 +237,7 @@ type User struct {
 	KeyHash []byte `protobuf:"bytes,1,opt,name=keyHash,proto3" json:"keyHash,omitempty"`
 	Email   string `protobuf:"bytes,2,opt,name=email" json:"email,omitempty"`
 	// / The IP offered by the user for P2P
-	Ip string `protobuf:"bytes,3,opt,name=ip" json:"ip,omitempty"`
+	Ip []string `protobuf:"bytes,3,rep,name=ip" json:"ip,omitempty"`
 	// / The port offered by the user for P2P
 	Port uint32 `protobuf:"varint,4,opt,name=port" json:"port,omitempty"`
 }
@@ -620,51 +622,47 @@ var _Platform_serviceDesc = grpc.ServiceDesc{
 }
 
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-	0x06, 0x00, 0x00,
+	// 666 bytes of a gzipped FileDescriptorProto
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+	0xff, 0xff, 0x9e, 0x01, 0x0b, 0x56, 0x5b, 0x05, 0x00, 0x00,
 }

dfssp/api/platform.proto

@@ -101,6 +101,8 @@ message JoinSignatureRequest {
 	string contractUuid = 1;
 	/// The open port for P2P communication of the client
 	uint32 port = 2;
+	/// The offered ips for P2P communication of the client
+	repeated string ip = 3;
 }
 
 /// UserConnected is emitted by the platform to the client to announce a new client connection, through a stream.
@@ -120,7 +122,7 @@ message User {
 	bytes keyHash = 1;
 	string email = 2;
 	/// The IP offered by the user for P2P
-	string ip = 3;
+	repeated string ip = 3;
 	/// The port offered by the user for P2P
 	uint32 port = 4;
 }

dfssp/contract/join.go

 package contract
 
 import (
-	n "net"
 	"time"
 
 	"dfss/auth"
@@ -21,7 +20,7 @@ import (
 // There is no timeout, this function will shut down on stream disconnection or on error.
 func JoinSignature(db *mgdb.MongoManager, rooms *common.WaitingGroupMap, in *api.JoinSignatureRequest, stream api.Platform_JoinSignatureServer) {
 	ctx := stream.Context()
-	state, addr, _ := net.GetTLSState(&ctx)
+	state, _, _ := net.GetTLSState(&ctx)
 	hash := auth.GetCertificateHash(state.VerifiedChains[0][0])
 
 	if !checkJoinSignatureRequest(db, &stream, in.ContractUuid, hash) {
@@ -42,11 +41,10 @@ func JoinSignature(db *mgdb.MongoManager, rooms *common.WaitingGroupMap, in *api
 	}
 
 	// Broadcast self identity
-	host, _, _ := n.SplitHostPort(addr.String())
 	rooms.Broadcast(roomID, &api.User{
 		KeyHash: hash,
 		Email:   net.GetCN(&ctx),
-		Ip:      host,
+		Ip:      in.Ip,
 		Port:    in.Port,
 	})
 

dfssp/contract/join_test.go

@@ -36,7 +36,6 @@ func TestJoinSignature(t *testing.T) {
 	assert.Equal(t, api.ErrorCode_SUCCESS, user.ErrorCode.Code)
 	assert.Equal(t, contractID.Hex(), user.ContractUuid)
 	assert.Equal(t, "test@test.com", user.User.Email)
-	assert.Equal(t, "127.0.0.1", user.User.Ip)
 	assert.Equal(t, uint32(5050), user.User.Port)
 }
 

dfssp/entities/user.go

@@ -8,28 +8,16 @@ import (
 	"gopkg.in/mgo.v2/bson"
 )
 
-// ConnectionInfo : Internal connection information of a User
-type ConnectionInfo struct {
-	IP   string `key:"ip" bson:"ip"`     // Ip of the connection
-	Port int    `key:"port" bson:"port"` // Port of the connection
-}
-
-// NewConnectionInfo : Create a new ConnectionInfo
-func NewConnectionInfo() *ConnectionInfo {
-	return &ConnectionInfo{}
-}
-
 // User : User stored in mongo
 type User struct {
-	ID           bson.ObjectId  `key:"_id" bson:"_id"`                   // Internal id of a User
-	Email        string         `key:"email" bson:"email"`               // Email of a User
-	Registration time.Time      `key:"registration" bson:"registration"` // Time of registration of the User
-	Expiration   time.Time      `key:"expiration" bson:"expiration"`     // Certificate expiration of the User
-	RegToken     string         `key:"regToken" bson:"regToken"`         // Token used for registering a User
-	Csr          string         `key:"csr" bson:"csr"`                   // Certificate request at PEM format
-	Certificate  string         `key:"certificate" bson:"certificate"`   // Certificate of the User
-	CertHash     []byte         `key:"certHash" bson:"certHash"`         // Hash of the certificate
-	ConnInfo     ConnectionInfo `key:"connInfo" bson:"connInfo"`         // Information about the connection
+	ID           bson.ObjectId `key:"_id" bson:"_id"`                   // Internal id of a User
+	Email        string        `key:"email" bson:"email"`               // Email of a User
+	Registration time.Time     `key:"registration" bson:"registration"` // Time of registration of the User
+	Expiration   time.Time     `key:"expiration" bson:"expiration"`     // Certificate expiration of the User
+	RegToken     string        `key:"regToken" bson:"regToken"`         // Token used for registering a User
+	Csr          string        `key:"csr" bson:"csr"`                   // Certificate request at PEM format
+	Certificate  string        `key:"certificate" bson:"certificate"`   // Certificate of the User
+	CertHash     []byte        `key:"certHash" bson:"certHash"`         // Hash of the certificate
 }
 
 // NewUser : Create a new User
@@ -37,7 +25,6 @@ func NewUser() *User {
 	return &User{
 		ID:           bson.NewObjectId(),
 		Registration: time.Now().UTC(),
-		ConnInfo:     *NewConnectionInfo(),
 	}
 }
 

dfssp/user/user_test.go

@@ -101,8 +101,6 @@ func TestMongoInsertUser(t *testing.T) {
 	user := entities.NewUser()
 	user.Email = "dfss1@mpcs.tk"
 	user.CertHash = []byte{0x01, 0x02}
-	user.ConnInfo.IP = "127.0.0.1"
-	user.ConnInfo.Port = 1111
 	user.Csr = "csr1"
 	user.RegToken = "regToken 1"
 
@@ -137,14 +135,6 @@ func equalUsers(t *testing.T, user1, user2 *entities.User) {
 		t.Fatal("Csr doesn't match : received ", user1.Csr, " and ", user2.Csr)
 	}
 
-	if user1.ConnInfo.IP != user2.ConnInfo.IP {
-		t.Fatal("ConnInfo.IP doesn't match : received ", user1.ConnInfo.IP, " and ", user2.ConnInfo.IP)
-	}
-
-	if user1.ConnInfo.Port != user2.ConnInfo.Port {
-		t.Fatal("ConnInfo.Port doesn't match : received ", user1.ConnInfo.Port, " and ", user2.ConnInfo.Port)
-	}
-
 	if user1.Certificate != user2.Certificate {
 		t.Fatal("Certificate doesn't match : received ", user1.Certificate, " and ", user2.Certificate)
 	}
@@ -154,8 +144,6 @@ func TestMongoFetchUser(t *testing.T) {
 	user := entities.NewUser()
 	user.Email = "dfss2@mpcs.tk"
 	user.CertHash = nil
-	user.ConnInfo.IP = "127.0.0.2"
-	user.ConnInfo.Port = 2222
 	user.Csr = "csr2"
 	user.RegToken = "regToken 2"
 

dfsst/api/resolution.pb.go

@@ -190,21 +190,20 @@ var _TTP_serviceDesc = grpc.ServiceDesc{
 }
 
 var fileDescriptor0 = []byte{
-	// 245 bytes of a gzipped FileDescriptorProto
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-	0x9a, 0x69, 0x01, 0x00, 0x00,
+	// 231 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x6c, 0x8f, 0xcd, 0x4a, 0xc3, 0x40,
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+	0x9d, 0x1f, 0x47, 0xa5, 0xa8, 0x1d, 0x64, 0x31, 0x8f, 0x06, 0xc6, 0x89, 0x07, 0x2f, 0xd2, 0xb7,
+	0xfb, 0x6c, 0x8b, 0x59, 0x92, 0xf6, 0x56, 0xcb, 0x23, 0xac, 0xe1, 0xf4, 0x87, 0x07, 0x2f, 0x93,
+	0xfd, 0x9f, 0xee, 0x50, 0x67, 0x7b, 0x92, 0x4e, 0x7f, 0xf8, 0x0a, 0x00, 0x00, 0xff, 0xff, 0x38,
+	0x4a, 0x1c, 0x12, 0x3f, 0x01, 0x00, 0x00,
 }

net/client.go

@@ -7,6 +7,7 @@ import (
 	"crypto/x509"
 	"errors"
 	"net"
+	"strings"
 	"time"
 
 	"dfss/auth"
@@ -144,3 +145,30 @@ func (c *tlsCreds) ClientHandshake(addr string, rawConn net.Conn, timeout time.D
 func (c *tlsCreds) ServerHandshake(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
 	return nil, nil, errors.New("Server side handshake not implemented")
 }
+
+// ExternalInterfaceAddr returns a list of the system's network interface addresses
+// Returns only ipv4 address if there is a lo interface, it is put at the end
+func ExternalInterfaceAddr() ([]string, error) {
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return nil, err
+	}
+
+	var extAddrs = make([]string, len(addrs))
+	var localhostAddrs = make([]string, 1)
+
+	for _, a := range addrs {
+		if strings.ContainsRune(a.String(), ':') {
+			// ipv6, do nothing
+		} else if strings.ContainsRune(a.String(), '/') {
+			ip := strings.Split(a.String(), "/")[0]
+			if strings.HasPrefix(ip, "127") {
+				// move localhost ip at the end if present
+				localhostAddrs = append(localhostAddrs, ip)
+			} else {
+				extAddrs = append(extAddrs, ip)
+			}
+		}
+	}
+	return append(extAddrs, localhostAddrs...), nil
+}

net/fixtures/test.pb.go

@@ -170,16 +170,15 @@ var _Test_serviceDesc = grpc.ServiceDesc{
 }