add silent refresh middleware

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

pkg/middleware/silentrefresh.go

@@ -0,0 +1,13 @@
+package middleware
+
+import (
+	"net/http"
+)
+
+// SilentRefresh allows the oidc client lib to silently refresh the token in an iframe
+func SilentRefresh(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("X-Frame-Options", "SAMEORIGIN")
+		next.ServeHTTP(w, r)
+	})
+}

pkg/server/http/server.go

@@ -1,6 +1,7 @@
 package http
 
 import (
+	phoenixmid "github.com/owncloud/ocis-phoenix/pkg/middleware"
 	svc "github.com/owncloud/ocis-phoenix/pkg/service/v0"
 	"github.com/owncloud/ocis-phoenix/pkg/version"
 	"github.com/owncloud/ocis-pkg/v2/middleware"
@@ -30,6 +31,7 @@ func Server(opts ...Option) (http.Service, error) {
 			middleware.Cache,
 			middleware.Cors,
 			middleware.Secure,
+			phoenixmid.SilentRefresh,
 			middleware.Version(
 				"phoenix",
 				version.String,