1 files changed, 70 insertions, 0 deletions
diff --git a/dom/base/fuzztest/FuzzStructuredClone.cpp b/dom/base/fuzztest/FuzzStructuredClone.cpp
new file mode 100644
index 0000000000..5473df2c8e
--- /dev/null
+++ b/dom/base/fuzztest/FuzzStructuredClone.cpp
@@ -0,0 +1,70 @@
+/* -*- 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 "FuzzingInterface.h"
+
+#include "jsapi.h"
+#include "js/StructuredClone.h"
+#include "mozilla/dom/ipc/StructuredCloneData.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/dom/StructuredCloneHolder.h"
+#include "mozilla/dom/SimpleGlobalObject.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/UniquePtr.h"
+
+#include "nsCycleCollector.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::dom::ipc;
+
+JS::PersistentRooted<JSObject*> global;
+
+static int FuzzingInitDomSC(int* argc, char*** argv) {
+  JSObject* simpleGlobal =
+      SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
+  global.init(mozilla::dom::RootingCx());
+  global.set(simpleGlobal);
+  return 0;
+}
+
+static int FuzzingRunDomSC(const uint8_t* data, size_t size) {
+  if (size < 8) {
+    return 0;
+  }
+
+  AutoJSAPI jsapi;
+  MOZ_RELEASE_ASSERT(jsapi.Init(global));
+
+  JSContext* cx = jsapi.cx();
+  auto gcGuard = mozilla::MakeScopeExit([&] {
+    JS::PrepareForFullGC(cx);
+    JS::NonIncrementalGC(cx, JS::GCOptions::Normal, JS::GCReason::API);
+    nsCycleCollector_collect(CCReason::API, nullptr);
+  });
+
+  // The internals of SCInput have a release assert about the padding
+  // of the data, so we fix it here to avoid performance problems
+  // during fuzzing.
+  size -= size % 8;
+
+  StructuredCloneData scdata;
+  if (!scdata.CopyExternalData(reinterpret_cast<const char*>(data), size)) {
+    return 0;
+  }
+
+  JS::Rooted<JS::Value> result(cx);
+  ErrorResult rv;
+  scdata.Read(cx, &result, rv);
+
+  rv.SuppressException();
+
+  return 0;
+}
+
+MOZ_FUZZING_INTERFACE_RAW(FuzzingInitDomSC, FuzzingRunDomSC,
+                          StructuredCloneReaderDOM);