Migrate jwt-go library from v2 to v3

Author: dghilardi

core/authentication/jwt_backend.go

@@ -40,9 +40,11 @@ func InitJWTAuthenticationBackend() *JWTAuthenticationBackend {
 
 func (backend *JWTAuthenticationBackend) GenerateToken(userUUID string) (string, error) {
 	token := jwt.New(jwt.SigningMethodRS512)
-	token.Claims["exp"] = time.Now().Add(time.Hour * time.Duration(settings.Get().JWTExpirationDelta)).Unix()
-	token.Claims["iat"] = time.Now().Unix()
-	token.Claims["sub"] = userUUID
+	token.Claims = jwt.MapClaims{
+		"exp": time.Now().Add(time.Hour * time.Duration(settings.Get().JWTExpirationDelta)).Unix(),
+		"iat": time.Now().Unix(),
+		"sub": userUUID,
+	}
 	tokenString, err := token.SignedString(backend.privateKey)
 	if err != nil {
 		panic(err)
@@ -76,7 +78,7 @@ func (backend *JWTAuthenticationBackend) getTokenRemainingValidity(timestamp int
 
 func (backend *JWTAuthenticationBackend) Logout(tokenString string, token *jwt.Token) error {
 	redisConn := redis.Connect()
-	return redisConn.SetValue(tokenString, tokenString, backend.getTokenRemainingValidity(token.Claims["exp"]))
+	return redisConn.SetValue(tokenString, tokenString, backend.getTokenRemainingValidity(token.Claims.(jwt.MapClaims)["exp"]))
 }
 
 func (backend *JWTAuthenticationBackend) IsInBlacklist(token string) bool {

core/authentication/middlewares.go

@@ -3,13 +3,14 @@ package authentication
 import (
 	"fmt"
 	jwt "github.com/dgrijalva/jwt-go"
+	request "github.com/dgrijalva/jwt-go/request"
 	"net/http"
 )
 
 func RequireTokenAuthentication(rw http.ResponseWriter, req *http.Request, next http.HandlerFunc) {
 	authBackend := InitJWTAuthenticationBackend()
 
-	token, err := jwt.ParseFromRequest(req, func(token *jwt.Token) (interface{}, error) {
+	token, err := request.ParseFromRequest(req, request.OAuth2Extractor, func(token *jwt.Token) (interface{}, error) {
 		if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
 			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
 		} else {

services/auth_service.go

@@ -6,6 +6,7 @@ import (
 	"api.jwt.auth/services/models"
 	"encoding/json"
 	jwt "github.com/dgrijalva/jwt-go"
+	request "github.com/dgrijalva/jwt-go/request"
 	"net/http"
 )
 
@@ -40,7 +41,7 @@ func RefreshToken(requestUser *models.User) []byte {
 
 func Logout(req *http.Request) error {
 	authBackend := authentication.InitJWTAuthenticationBackend()
-	tokenRequest, err := jwt.ParseFromRequest(req, func(token *jwt.Token) (interface{}, error) {
+	tokenRequest, err := request.ParseFromRequest(req, request.OAuth2Extractor, func(token *jwt.Token) (interface{}, error) {
 		return authBackend.PublicKey, nil
 	})
 	if err != nil {