Add m-esr52 at 52.6.0

1 files changed, 179 insertions, 0 deletions

diff --git a/dom/base/nsStructuredCloneContainer.cpp b/dom/base/nsStructuredCloneContainer.cpp
new file mode 100644
index 000000000..8c2cdc091
--- /dev/null
+++ b/dom/base/nsStructuredCloneContainer.cpp
@@ -0,0 +1,179 @@
+/* -*- 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 "nsStructuredCloneContainer.h"
+
+#include "nsCOMPtr.h"
+#include "nsIGlobalObject.h"
+#include "nsIVariant.h"
+#include "nsIXPConnect.h"
+#include "nsServiceManagerUtils.h"
+#include "nsContentUtils.h"
+#include "jsapi.h"
+#include "xpcpublic.h"
+
+#include "mozilla/Base64.h"
+#include "mozilla/dom/ScriptSettings.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+NS_IMPL_ADDREF(nsStructuredCloneContainer)
+NS_IMPL_RELEASE(nsStructuredCloneContainer)
+
+NS_INTERFACE_MAP_BEGIN(nsStructuredCloneContainer)
+  NS_INTERFACE_MAP_ENTRY(nsIStructuredCloneContainer)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+nsStructuredCloneContainer::nsStructuredCloneContainer()
+  : mVersion(0)
+{
+}
+
+nsStructuredCloneContainer::~nsStructuredCloneContainer()
+{
+}
+
+NS_IMETHODIMP
+nsStructuredCloneContainer::InitFromJSVal(JS::Handle<JS::Value> aData,
+                                          JSContext* aCx)
+{
+  if (DataLength()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  ErrorResult rv;
+  Write(aCx, aData, rv);
+  if (NS_WARN_IF(rv.Failed())) {
+    return rv.StealNSResult();
+  }
+
+  mVersion = JS_STRUCTURED_CLONE_VERSION;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsStructuredCloneContainer::InitFromBase64(const nsAString &aData,
+                                           uint32_t aFormatVersion)
+{
+  if (DataLength()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_ConvertUTF16toUTF8 data(aData);
+
+  nsAutoCString binaryData;
+  nsresult rv = Base64Decode(data, binaryData);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (!CopyExternalData(binaryData.get(), binaryData.Length())) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  mVersion = aFormatVersion;
+  return NS_OK;
+}
+
+nsresult
+nsStructuredCloneContainer::DeserializeToJsval(JSContext* aCx,
+                                               JS::MutableHandle<JS::Value> aValue)
+{
+  aValue.setNull();
+  JS::Rooted<JS::Value> jsStateObj(aCx);
+
+  ErrorResult rv;
+  Read(aCx, &jsStateObj, rv);
+  if (NS_WARN_IF(rv.Failed())) {
+    return rv.StealNSResult();
+  }
+
+  aValue.set(jsStateObj);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsStructuredCloneContainer::DeserializeToVariant(JSContext* aCx,
+                                                 nsIVariant** aData)
+{
+  NS_ENSURE_ARG_POINTER(aData);
+  *aData = nullptr;
+
+  if (!DataLength()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Deserialize to a JS::Value.
+  JS::Rooted<JS::Value> jsStateObj(aCx);
+  nsresult rv = DeserializeToJsval(aCx, &jsStateObj);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  // Now wrap the JS::Value as an nsIVariant.
+  nsCOMPtr<nsIVariant> varStateObj;
+  nsCOMPtr<nsIXPConnect> xpconnect = do_GetService(nsIXPConnect::GetCID());
+  NS_ENSURE_STATE(xpconnect);
+  xpconnect->JSValToVariant(aCx, jsStateObj, getter_AddRefs(varStateObj));
+  NS_ENSURE_STATE(varStateObj);
+
+  varStateObj.forget(aData);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsStructuredCloneContainer::GetDataAsBase64(nsAString &aOut)
+{
+  aOut.Truncate();
+
+  if (!DataLength()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (HasClonedDOMObjects()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  auto iter = Data().Iter();
+  size_t size = Data().Size();
+  nsAutoCString binaryData;
+  binaryData.SetLength(size);
+  Data().ReadBytes(iter, binaryData.BeginWriting(), size);
+  nsAutoCString base64Data;
+  nsresult rv = Base64Encode(binaryData, base64Data);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  CopyASCIItoUTF16(base64Data, aOut);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsStructuredCloneContainer::GetSerializedNBytes(uint64_t* aSize)
+{
+  NS_ENSURE_ARG_POINTER(aSize);
+
+  if (!DataLength()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aSize = DataLength();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsStructuredCloneContainer::GetFormatVersion(uint32_t* aFormatVersion)
+{
+  NS_ENSURE_ARG_POINTER(aFormatVersion);
+
+  if (!DataLength()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aFormatVersion = mVersion;
+  return NS_OK;
+}