implemented getting user from signature

internal/rest_handler/test_auth.go

@@ -0,0 +1,39 @@
+package rest_handler
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+
+	"gitea.elara.ws/Hazel/hangman/internal/game"
+	"github.com/labstack/echo/v4"
+)
+
+func TestAuth(c echo.Context) error {
+	session := game.GetSession(c.Param("session"))
+
+	type TestResults struct {
+		SignatureValid bool
+		User           *string
+	}
+
+	sig := c.Request().Header.Get("signature")
+	body, _ := io.ReadAll(c.Request().Body)
+	fmt.Println(sig)
+
+	u := session.VerifySignature(sig, body)
+	var resp TestResults
+	if u == nil {
+		resp = TestResults{
+			SignatureValid: false,
+			User:           nil,
+		}
+	} else {
+		resp = TestResults{
+			SignatureValid: true,
+			User:           &u.Name,
+		}
+	}
+
+	return c.JSON(http.StatusOK, resp)
+}