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-rw-r--r--dom/ipc/PermissionMessageUtils.cpp69
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/ipc/PermissionMessageUtils.cpp b/dom/ipc/PermissionMessageUtils.cpp
new file mode 100644
index 000000000..445124b0a
--- /dev/null
+++ b/dom/ipc/PermissionMessageUtils.cpp
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/PermissionMessageUtils.h"
+#include "nsISerializable.h"
+#include "nsSerializationHelper.h"
+
+namespace IPC {
+
+void
+ParamTraits<Principal>::Write(Message* aMsg, const paramType& aParam) {
+ bool isNull = !aParam.mPrincipal;
+ WriteParam(aMsg, isNull);
+ if (isNull) {
+ return;
+ }
+
+ bool isSerialized = false;
+ nsCString principalString;
+ nsCOMPtr<nsISerializable> serializable = do_QueryInterface(aParam.mPrincipal);
+ if (serializable) {
+ nsresult rv = NS_SerializeToString(serializable, principalString);
+ if (NS_SUCCEEDED(rv)) {
+ isSerialized = true;
+ }
+ }
+
+ if (!isSerialized) {
+ NS_RUNTIMEABORT("Unable to serialize principal.");
+ return;
+ }
+
+ WriteParam(aMsg, principalString);
+}
+
+bool
+ParamTraits<Principal>::Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
+{
+ bool isNull;
+ if (!ReadParam(aMsg, aIter, &isNull)) {
+ return false;
+ }
+
+ if (isNull) {
+ aResult->mPrincipal = nullptr;
+ return true;
+ }
+
+ nsCString principalString;
+ if (!ReadParam(aMsg, aIter, &principalString)) {
+ return false;
+ }
+
+ nsCOMPtr<nsISupports> iSupports;
+ nsresult rv = NS_DeserializeObject(principalString, getter_AddRefs(iSupports));
+ NS_ENSURE_SUCCESS(rv, false);
+
+ nsCOMPtr<nsIPrincipal> principal = do_QueryInterface(iSupports);
+ NS_ENSURE_TRUE(principal, false);
+
+ principal.swap(aResult->mPrincipal);
+ return true;
+}
+
+} // namespace IPC
+