1 files changed, 93 insertions, 0 deletions
diff --git a/dom/fetch/ChannelInfo.h b/dom/fetch/ChannelInfo.h
new file mode 100644
index 000000000..a8acacfe0
--- /dev/null
+++ b/dom/fetch/ChannelInfo.h
@@ -0,0 +1,93 @@
+/* -*- 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 mozilla_dom_ChannelInfo_h
+#define mozilla_dom_ChannelInfo_h
+
+#include "nsString.h"
+#include "nsCOMPtr.h"
+
+class nsIChannel;
+class nsIDocument;
+class nsIGlobalObject;
+class nsIURI;
+
+namespace mozilla {
+namespace ipc {
+class IPCChannelInfo;
+} // namespace ipc
+
+namespace dom {
+
+// This class represents the information related to a Response that we
+// retrieve from the corresponding channel that is used to perform the fetch.
+//
+// When adding new members to this object, the following code needs to be
+// updated:
+// * IPCChannelInfo
+// * InitFromChannel and InitFromIPCChannelInfo members
+// * ResurrectInfoOnChannel member
+// * AsIPCChannelInfo member
+// * constructors and assignment operators for this class.
+// * DOM Cache schema code (in dom/cache/DBSchema.cpp) to ensure that the newly
+//   added member is saved into the DB and loaded from it properly.
+//
+// Care must be taken when initializing this object, or when calling
+// ResurrectInfoOnChannel().  This object cannot be initialized twice, and
+// ResurrectInfoOnChannel() cannot be called on it before it has been
+// initialized.  There are assertions ensuring these invariants.
+class ChannelInfo final
+{
+public:
+  typedef mozilla::ipc::IPCChannelInfo IPCChannelInfo;
+
+  ChannelInfo()
+    : mInited(false)
+  {
+  }
+
+  ChannelInfo(const ChannelInfo& aRHS)
+    : mSecurityInfo(aRHS.mSecurityInfo)
+    , mInited(aRHS.mInited)
+  {
+  }
+
+  ChannelInfo&
+  operator=(const ChannelInfo& aRHS)
+  {
+    mSecurityInfo = aRHS.mSecurityInfo;
+    mInited = aRHS.mInited;
+    return *this;
+  }
+
+  void InitFromDocument(nsIDocument* aDoc);
+  void InitFromChannel(nsIChannel* aChannel);
+  void InitFromChromeGlobal(nsIGlobalObject* aGlobal);
+  void InitFromIPCChannelInfo(const IPCChannelInfo& aChannelInfo);
+
+  // This restores every possible information stored from a previous channel
+  // object on a new one.
+  nsresult ResurrectInfoOnChannel(nsIChannel* aChannel);
+
+  bool IsInitialized() const
+  {
+    return mInited;
+  }
+
+  IPCChannelInfo AsIPCChannelInfo() const;
+
+private:
+  void SetSecurityInfo(nsISupports* aSecurityInfo);
+
+private:
+  nsCString mSecurityInfo;
+  bool mInited;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_ChannelInfo_h