✨ Fetch userinfo in auth middleware

pkg/internal/auth/http.go

@@ -1,14 +1,18 @@
 package auth
 
-import "github.com/gofiber/fiber/v2"
+import (
+	"github.com/gofiber/fiber/v2"
+)
 
-func SoftAuthMiddleware(c *fiber.Ctx) error {
+func AuthContextMiddleware(c *fiber.Ctx) error {
 	atk := tokenExtract(c)
-	c.Locals("nex_token", atk)
+	c.Locals("nex_in_token", atk)
 
 	if claims, err := tokenRead(atk); err == nil && claims != nil {
 		c.Locals("nex_principal", claims)
-		// TODO fetch user info
+		if err = userinfoFetch(c); err != nil {
+			return err
+		}
 	} else if err != nil {
 		c.Locals("nex_auth_error", err)
 	}
@@ -16,7 +20,7 @@ func SoftAuthMiddleware(c *fiber.Ctx) error {
 	return c.Next()
 }
 
-func HardAuthMiddleware(c *fiber.Ctx) error {
+func AuthMiddleware(c *fiber.Ctx) error {
 	if c.Locals("nex_principal") == nil {
 		err := c.Locals("nex_auth_error").(error)
 		return fiber.NewError(fiber.StatusUnauthorized, err.Error())

pkg/internal/auth/token.go

@@ -8,6 +8,9 @@ import (
 
 var JReader *sec.JwtReader
 
+var IReader *sec.InternalTokenReader
+var IWriter *sec.InternalTokenWriter
+
 func tokenExtract(c *fiber.Ctx) string {
 	var atk string
 	if cookie := c.Cookies(sec.CookieAccessToken); len(cookie) > 0 {

pkg/internal/auth/userinfo.go

@@ -1 +1,46 @@
 package auth
+
+import (
+	"context"
+	"fmt"
+	"git.solsynth.dev/hypernet/nexus/pkg/internal/directory"
+	"git.solsynth.dev/hypernet/nexus/pkg/nex"
+	"git.solsynth.dev/hypernet/nexus/pkg/nex/sec"
+	"git.solsynth.dev/hypernet/nexus/pkg/proto"
+	"github.com/gofiber/fiber/v2"
+	"github.com/rs/zerolog/log"
+	"time"
+)
+
+func userinfoFetch(c *fiber.Ctx) error {
+	claims, ok := c.Locals("nex_principal").(*sec.JwtClaims)
+	if !ok {
+		return fiber.NewError(fiber.StatusUnauthorized, "user principal data was not found")
+	}
+
+	service := directory.GetServiceInstanceByType(nex.ServiceTypeAuth)
+	if service != nil {
+		conn, err := service.GetGrpcConn()
+		if err != nil {
+			log.Warn().Str("id", service.ID).Err(err).Msg("Unable to fetch userinfo, the implementation of id service is down")
+		} else {
+			ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+			defer cancel()
+			resp, err := proto.NewAuthServiceClient(conn).Authenticate(ctx, &proto.AuthRequest{
+				SessionId: uint64(claims.Session),
+			})
+			if err != nil {
+				return fiber.NewError(fiber.StatusUnauthorized, fmt.Sprintf("unable to load userinfo: %v", err))
+			}
+			userinfo := sec.NewUserInfoFromProto(resp.Info.Info)
+			tk, err := IWriter.WriteUserInfoJwt(userinfo)
+			if err != nil {
+				return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("unable to sign userinfo: %v", err))
+			}
+			c.Locals("nex_token", tk)
+		}
+	} else {
+		log.Warn().Msg("Unable to fetch userinfo, no implementation of id service")
+	}
+	return nil
+}

pkg/internal/directory/service.go

@@ -21,7 +21,7 @@ func (v *ServiceInstance) GetGrpcConn() (*grpc.ClientConn, error) {
 	var err error
 	v.grpcConn, err = ConnectService(v)
 	if err != nil {
-		RemoveServiceInstance(v.ID)
+		_ = RemoveServiceInstance(v.ID)
 		return nil, err
 	}
 

pkg/main.go

@@ -80,6 +80,19 @@ func main() {
 		log.Info().Msg("Jwt public key loaded.")
 	}
 
+	if reader, err := sec.NewInternalTokenReader(viper.GetString("security.internal_public_key")); err != nil {
+		log.Error().Err(err).Msg("An error occurred when reading internal public key for jwt. Authentication related features will be disabled.")
+	} else {
+		auth.IReader = reader
+		log.Info().Msg("Internal jwt public key loaded.")
+	}
+	if writer, err := sec.NewInternalTokenWriter(viper.GetString("security.internal_private_key")); err != nil {
+		log.Error().Err(err).Msg("An error occurred when reading internal private key for jwt. Authentication related features will be disabled.")
+	} else {
+		auth.IWriter = writer
+		log.Info().Msg("Internal jwt private key loaded.")
+	}
+
 	// Server
 	go server.NewServer().Listen()
 

pkg/nex/const.go

@@ -0,0 +1,5 @@
+package nex
+
+const (
+	ServiceTypeAuth = "id"
+)

pkg/nex/sec/info.go

@@ -0,0 +1,35 @@
+package sec
+
+import (
+	"git.solsynth.dev/hypernet/nexus/pkg/nex"
+	"git.solsynth.dev/hypernet/nexus/pkg/proto"
+	"github.com/goccy/go-json"
+)
+
+// UserInfo is the basic of userinfo, you can add anything above it.
+// Full data from id service was stored in the metadata field.
+type UserInfo struct {
+	ID        uint           `json:"id"`
+	Name      string         `json:"name"`
+	PermNodes map[string]any `json:"perm_nodes"`
+	Metadata  map[string]any `json:"metadata"`
+}
+
+func NewUserInfoFromProto(in *proto.UserInfo) UserInfo {
+	return UserInfo{
+		ID:        uint(in.Id),
+		Name:      in.Name,
+		PermNodes: nex.DecodeMap(in.PermNodes),
+		Metadata:  nex.DecodeMap(in.Metadata),
+	}
+}
+
+func NewUserInfoFromBytes(in []byte) (UserInfo, error) {
+	var info UserInfo
+	err := json.Unmarshal(in, &info)
+	return info, err
+}
+
+func (v UserInfo) Encode() []byte {
+	return nex.EncodeMap(v)
+}

pkg/nex/sec/internal_token.go

@@ -0,0 +1,108 @@
+package sec
+
+import (
+	"crypto/ed25519"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"fmt"
+	"github.com/golang-jwt/jwt/v5"
+	"os"
+	"time"
+)
+
+type InternalTokenWriter struct {
+	pk *ed25519.PrivateKey
+}
+
+func NewInternalTokenWriter(fp string) (*InternalTokenWriter, error) {
+	rawKey, err := os.ReadFile(fp)
+	if err != nil {
+		return nil, err
+	}
+
+	block, _ := pem.Decode(rawKey)
+	if block == nil || block.Type != "PRIVATE KEY" {
+		return nil, fmt.Errorf("failed to decode PEM block containing private key")
+	}
+
+	anyPk, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+	if err != nil {
+		return nil, err
+	}
+
+	pk, ok := anyPk.(*ed25519.PrivateKey)
+	if !ok {
+		return nil, fmt.Errorf("not an Ed25519 private key")
+	}
+
+	return &InternalTokenWriter{
+		pk: pk,
+	}, nil
+}
+
+func (v *InternalTokenWriter) WriteUserInfoJwt(in UserInfo, audiences ...string) (string, error) {
+	rawData := base64.StdEncoding.EncodeToString(in.Encode())
+	claims := jwt.RegisteredClaims{
+		NotBefore: jwt.NewNumericDate(time.Now()),
+		IssuedAt:  jwt.NewNumericDate(time.Now()),
+		ExpiresAt: jwt.NewNumericDate(time.Now().Add(5 * time.Minute)),
+		Audience:  audiences,
+		Issuer:    "nexus",
+		Subject:   rawData,
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodEdDSA, claims)
+	return token.SignedString(v.pk)
+}
+
+type InternalTokenReader struct {
+	pk *ed25519.PublicKey
+}
+
+func NewInternalTokenReader(fp string) (*InternalTokenReader, error) {
+	rawKey, err := os.ReadFile(fp)
+	if err != nil {
+		return nil, err
+	}
+
+	block, _ := pem.Decode(rawKey)
+	if block == nil || block.Type != "PUBLIC KEY" {
+		return nil, fmt.Errorf("failed to decode PEM block containing private key")
+	}
+
+	anyPk, err := x509.ParsePKIXPublicKey(block.Bytes)
+	if err != nil {
+		return nil, err
+	}
+
+	pk, ok := anyPk.(*ed25519.PublicKey)
+	if !ok {
+		return nil, fmt.Errorf("not an Ed25519 public key")
+	}
+
+	return &InternalTokenReader{
+		pk: pk,
+	}, nil
+}
+
+func (v *InternalTokenReader) ReadUserInfoJwt(in string) (*UserInfo, error) {
+	token, err := jwt.ParseWithClaims(in, &jwt.RegisteredClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return v.pk, nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	if !token.Valid {
+		return nil, fmt.Errorf("invalid token")
+	}
+	claims, ok := token.Claims.(*jwt.RegisteredClaims)
+	if !ok {
+		return nil, fmt.Errorf("invalid claims")
+	}
+	rawData, err := base64.StdEncoding.DecodeString(claims.Subject)
+	if err != nil {
+		return nil, err
+	}
+	info, err := NewUserInfoFromBytes(rawData)
+	return &info, err
+}

pkg/nex/sec/jwt_reader.go

@@ -14,12 +14,12 @@ type JwtReader struct {
 }
 
 func NewJwtReader(fp string) (*JwtReader, error) {
-	privateKeyBytes, err := os.ReadFile(fp)
+	rawKey, err := os.ReadFile(fp)
 	if err != nil {
 		return nil, err
 	}
 
-	block, _ := pem.Decode(privateKeyBytes)
+	block, _ := pem.Decode(rawKey)
 	if block == nil || block.Type != "PUBLIC KEY" {
 		return nil, fmt.Errorf("failed to decode PEM block containing private key")
 	}

pkg/nex/sec/jwt_writer.go

@@ -14,12 +14,12 @@ type JwtWriter struct {
 }
 
 func NewJwtWriter(fp string) (*JwtWriter, error) {
-	rawPk, err := os.ReadFile(fp)
+	rawKey, err := os.ReadFile(fp)
 	if err != nil {
 		return nil, err
 	}
 
-	block, _ := pem.Decode(rawPk)
+	block, _ := pem.Decode(rawKey)
 	if block == nil || block.Type != "PRIVATE KEY" {
 		return nil, fmt.Errorf("failed to decode PEM block containing private key")
 	}
@@ -41,9 +41,5 @@ func NewJwtWriter(fp string) (*JwtWriter, error) {
 
 func WriteJwt[T jwt.Claims](v *JwtWriter, in T) (string, error) {
 	token := jwt.NewWithClaims(jwt.SigningMethodRS256, in)
-	ss, err := token.SignedString(v.key)
-	if err != nil {
-		return "", err
-	}
-	return ss, nil
+	return token.SignedString(v.key)
 }

pkg/proto/authenticate.pb.go

@@ -25,9 +25,10 @@ type UserInfo struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id       uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	Name     string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
-	Metadata []byte `protobuf:"bytes,3,opt,name=metadata,proto3,oneof" json:"metadata,omitempty"`
+	Id        uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Name      string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	PermNodes []byte `protobuf:"bytes,3,opt,name=perm_nodes,json=permNodes,proto3,oneof" json:"perm_nodes,omitempty"`
+	Metadata  []byte `protobuf:"bytes,4,opt,name=metadata,proto3,oneof" json:"metadata,omitempty"`
 }
 
 func (x *UserInfo) Reset() {
@@ -74,6 +75,13 @@ func (x *UserInfo) GetName() string {
 	return ""
 }
 
+func (x *UserInfo) GetPermNodes() []byte {
+	if x != nil {
+		return x.PermNodes
+	}
+	return nil
+}
+
 func (x *UserInfo) GetMetadata() []byte {
 	if x != nil {
 		return x.Metadata
@@ -86,11 +94,8 @@ type AuthInfo struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Info            *UserInfo `protobuf:"bytes,1,opt,name=info,proto3" json:"info,omitempty"`
-	PermNodes       []byte    `protobuf:"bytes,2,opt,name=perm_nodes,json=permNodes,proto3" json:"perm_nodes,omitempty"`
-	SessionId       uint64    `protobuf:"varint,3,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`
-	NewAccessToken  *string   `protobuf:"bytes,4,opt,name=new_access_token,json=newAccessToken,proto3,oneof" json:"new_access_token,omitempty"`
-	NewRefreshToken *string   `protobuf:"bytes,5,opt,name=new_refresh_token,json=newRefreshToken,proto3,oneof" json:"new_refresh_token,omitempty"`
+	Info      *UserInfo `protobuf:"bytes,1,opt,name=info,proto3" json:"info,omitempty"`
+	SessionId uint64    `protobuf:"varint,3,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`
 }
 
 func (x *AuthInfo) Reset() {
@@ -130,13 +135,6 @@ func (x *AuthInfo) GetInfo() *UserInfo {
 	return nil
 }
 
-func (x *AuthInfo) GetPermNodes() []byte {
-	if x != nil {
-		return x.PermNodes
-	}
-	return nil
-}
-
 func (x *AuthInfo) GetSessionId() uint64 {
 	if x != nil {
 		return x.SessionId
@@ -144,27 +142,12 @@ func (x *AuthInfo) GetSessionId() uint64 {
 	return 0
 }
 
-func (x *AuthInfo) GetNewAccessToken() string {
-	if x != nil && x.NewAccessToken != nil {
-		return *x.NewAccessToken
-	}
-	return ""
-}
-
-func (x *AuthInfo) GetNewRefreshToken() string {
-	if x != nil && x.NewRefreshToken != nil {
-		return *x.NewRefreshToken
-	}
-	return ""
-}
-
 type AuthRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	AccessToken  string  `protobuf:"bytes,1,opt,name=access_token,json=accessToken,proto3" json:"access_token,omitempty"`
-	RefreshToken *string `protobuf:"bytes,2,opt,name=refresh_token,json=refreshToken,proto3,oneof" json:"refresh_token,omitempty"`
+	SessionId uint64 `protobuf:"varint,1,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`
 }
 
 func (x *AuthRequest) Reset() {
@@ -197,18 +180,11 @@ func (*AuthRequest) Descriptor() ([]byte, []int) {
 	return file_authenticate_proto_rawDescGZIP(), []int{2}
 }
 
-func (x *AuthRequest) GetAccessToken() string {
+func (x *AuthRequest) GetSessionId() uint64 {
 	if x != nil {
-		return x.AccessToken
+		return x.SessionId
 	}
-	return ""
-}
-
-func (x *AuthRequest) GetRefreshToken() string {
-	if x != nil && x.RefreshToken != nil {
-		return *x.RefreshToken
-	}
-	return ""
+	return 0
 }
 
 type AuthReply struct {
@@ -594,92 +570,80 @@ var File_authenticate_proto protoreflect.FileDescriptor
 
 var file_authenticate_proto_rawDesc = []byte{
 	0x0a, 0x12, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e, 0x74, 0x69, 0x63, 0x61, 0x74, 0x65, 0x2e, 0x70,
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 }
 
 var (
@@ -732,8 +696,6 @@ func file_authenticate_proto_init() {
 		return
 	}
 	file_authenticate_proto_msgTypes[0].OneofWrappers = []any{}
-	file_authenticate_proto_msgTypes[1].OneofWrappers = []any{}
-	file_authenticate_proto_msgTypes[2].OneofWrappers = []any{}
 	file_authenticate_proto_msgTypes[3].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{

pkg/proto/authenticate.proto

@@ -14,20 +14,17 @@ service AuthService {
 message UserInfo {
   uint64 id = 1;
   string name = 2;
-  optional bytes metadata = 3;
+  optional bytes perm_nodes = 3;
+  optional bytes metadata = 4;
 }
 
 message AuthInfo {
   UserInfo info = 1;
-  bytes perm_nodes = 2;
   uint64 session_id = 3;
-  optional string new_access_token = 4;
-  optional string new_refresh_token = 5;
 }
 
 message AuthRequest {
-  string access_token = 1;
-  optional string refresh_token = 2;
+  uint64 session_id = 1;
 }
 
 message AuthReply {

settings.toml

@@ -18,3 +18,5 @@ endpoints = ["localhost:2379"]
 
 [security]
 public_key = "keys/public_key.pem"
+internal_public_key = "keys/internal_public_key.pem"
+internal_private_key = "keys/internal_private_key.pem"