feat: jwt middleware

utils/jwt.go

@@ -10,7 +10,7 @@ import (
 
 var JWT_KEY = []byte(global.ServerSettings.Jwt.Secret)
 
-// Generate token for user
+// GenerateToken Generate token for user
 // Return: token generated
 func GenerateToken(claims jwt.MapClaims) string {
 	claims["exp"] = time.Now().Add(15 * 24 * time.Hour).Unix()
@@ -23,23 +23,25 @@ func GenerateToken(claims jwt.MapClaims) string {
 	return tokenStr
 }
 
-// Renew user's token
+// RenewToken Renew user's token
 // tokenStr: user request token
 // Return:
 // 		BlankString: token is invalid or token is expired out of allowed time;
 //		OldToken: token is not need to renew;
-//		NewToekn: token is renew;
+//		NewToken: token is renew;
 func RenewToken(tokenStr string) string {
 	token, err := jwt.Parse(tokenStr, func(t *jwt.Token) (interface{}, error) {
 		return JWT_KEY, nil
 	})
 
 	// Token is invalid
-	switch err.(*jwt.ValidationError).Errors {
-	case jwt.ValidationErrorSignatureInvalid:
-		return ""
-	case jwt.ValidationErrorIssuedAt:
-		return ""
+	if err != nil {
+		switch err.(*jwt.ValidationError).Errors {
+		case jwt.ValidationErrorSignatureInvalid:
+			return ""
+		case jwt.ValidationErrorIssuedAt:
+			return ""
+		}
 	}
 
 	claims := token.Claims.(jwt.MapClaims)
@@ -47,7 +49,7 @@ func RenewToken(tokenStr string) string {
 	expireDuration := expireAt.Sub(time.Now())
 
 	// Token is out of allow expire duration
-	if expireDuration.Hours() < float64(-global.ServerSettings.Jwt.RenewExpireDays*24) {
+	if expireDuration.Hours() < -float64(global.ServerSettings.Jwt.RenewExpireDays*24) {
 		return ""
 	}
 	// Token not need renew

utils/response.go

@@ -18,3 +18,7 @@ func Error(c *gin.Context, status int, code int, msg interface{}, data interface
 func Succ(c *gin.Context, data interface{}) {
 	Success(c, http.StatusOK, "success", data)
 }
+
+func Err(c *gin.Context, status int, code int, msg interface{}) {
+	c.JSON(status, models.GinResponse{Code: code, Msg: msg})
+}