1 files changed, 96 insertions, 0 deletions
diff --git a/docshell/base/SerializedLoadContext.h b/docshell/base/SerializedLoadContext.h
new file mode 100644
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+++ b/docshell/base/SerializedLoadContext.h
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+/* -*- 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/. */
+
+#ifndef SerializedLoadContext_h
+#define SerializedLoadContext_h
+
+#include "base/basictypes.h"
+#include "ipc/IPCMessageUtils.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "mozilla/BasePrincipal.h"
+
+class nsILoadContext;
+
+/*
+ *  This file contains the IPC::SerializedLoadContext class, which is used to
+ *  copy data across IPDL from Child process contexts so it is available in the
+ *  Parent.
+ */
+
+class nsIChannel;
+class nsIWebSocketChannel;
+
+namespace IPC {
+
+class SerializedLoadContext {
+ public:
+  SerializedLoadContext()
+      : mIsNotNull(false),
+        mIsPrivateBitValid(false),
+        mIsContent(false),
+        mUseRemoteTabs(false),
+        mUseRemoteSubframes(false),
+        mUseTrackingProtection(false) {
+    Init(nullptr);
+  }
+
+  explicit SerializedLoadContext(nsILoadContext* aLoadContext);
+  explicit SerializedLoadContext(nsIChannel* aChannel);
+  explicit SerializedLoadContext(nsIWebSocketChannel* aChannel);
+
+  void Init(nsILoadContext* aLoadContext);
+
+  bool IsNotNull() const { return mIsNotNull; }
+  bool IsPrivateBitValid() const { return mIsPrivateBitValid; }
+
+  // used to indicate if child-side LoadContext * was null.
+  bool mIsNotNull;
+  // used to indicate if child-side mUsePrivateBrowsing flag is valid, even if
+  // mIsNotNull is false, i.e., child LoadContext was null.
+  bool mIsPrivateBitValid;
+  bool mIsContent;
+  bool mUseRemoteTabs;
+  bool mUseRemoteSubframes;
+  bool mUseTrackingProtection;
+  mozilla::OriginAttributes mOriginAttributes;
+};
+
+// Function to serialize over IPDL
+template <>
+struct ParamTraits<SerializedLoadContext> {
+  typedef SerializedLoadContext paramType;
+
+  static void Write(MessageWriter* aWriter, const paramType& aParam) {
+    nsAutoCString suffix;
+    aParam.mOriginAttributes.CreateSuffix(suffix);
+
+    WriteParam(aWriter, aParam.mIsNotNull);
+    WriteParam(aWriter, aParam.mIsContent);
+    WriteParam(aWriter, aParam.mIsPrivateBitValid);
+    WriteParam(aWriter, aParam.mUseRemoteTabs);
+    WriteParam(aWriter, aParam.mUseRemoteSubframes);
+    WriteParam(aWriter, aParam.mUseTrackingProtection);
+    WriteParam(aWriter, suffix);
+  }
+
+  static bool Read(MessageReader* aReader, paramType* aResult) {
+    nsAutoCString suffix;
+    if (!ReadParam(aReader, &aResult->mIsNotNull) ||
+        !ReadParam(aReader, &aResult->mIsContent) ||
+        !ReadParam(aReader, &aResult->mIsPrivateBitValid) ||
+        !ReadParam(aReader, &aResult->mUseRemoteTabs) ||
+        !ReadParam(aReader, &aResult->mUseRemoteSubframes) ||
+        !ReadParam(aReader, &aResult->mUseTrackingProtection) ||
+        !ReadParam(aReader, &suffix)) {
+      return false;
+    }
+    return aResult->mOriginAttributes.PopulateFromSuffix(suffix);
+  }
+};
+
+}  // namespace IPC
+
+#endif  // SerializedLoadContext_h