Add function to get user and provider ID from JWT

auth/jwt.go

@@ -141,3 +141,18 @@ func GetUserIDFromJWTWithoutValidation(jsonWebTokenString string) string {
 	}
 	return jsonWebToken.UserID
 }
+
+// GetUserAndProviderIDFromJWTWithoutValidation gets the userID and providerID from the jsonWebTokenString without validating the
+// signature. Successful execution of this function DOES NOT indicate that the JWT is valid in any way.
+func GetUserAndProviderIDFromJWTWithoutValidation(jsonWebTokenString string) (string, int64) {
+	token, _, err := jwt.NewParser().ParseUnverified(jsonWebTokenString, jwt.MapClaims{})
+	if err != nil {
+		return "", 0
+	}
+
+	jsonWebToken, err := getJsonWebTokenFromTokenClaims(token, false)
+	if err != nil {
+		return "", 0
+	}
+	return jsonWebToken.UserID, jsonWebToken.ProviderID
+}