gecko/dom/fetch/FetchDriver.h

113 lines
3.1 KiB
C++

/* -*- 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_FetchDriver_h
#define mozilla_dom_FetchDriver_h
#include "nsAutoPtr.h"
#include "nsIChannelEventSink.h"
#include "nsIInterfaceRequestor.h"
#include "nsIStreamListener.h"
#include "nsIThreadRetargetableStreamListener.h"
#include "mozilla/RefPtr.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/net/ReferrerPolicy.h"
class nsIDocument;
class nsIOutputStream;
class nsILoadGroup;
class nsIPrincipal;
namespace mozilla {
namespace dom {
class InternalRequest;
class InternalResponse;
class FetchDriverObserver
{
public:
FetchDriverObserver() : mGotResponseAvailable(false)
{ }
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FetchDriverObserver);
void OnResponseAvailable(InternalResponse* aResponse)
{
MOZ_ASSERT(!mGotResponseAvailable);
mGotResponseAvailable = true;
OnResponseAvailableInternal(aResponse);
}
virtual void OnResponseEnd()
{ };
protected:
virtual ~FetchDriverObserver()
{ };
virtual void OnResponseAvailableInternal(InternalResponse* aResponse) = 0;
private:
bool mGotResponseAvailable;
};
class FetchDriver final : public nsIStreamListener,
public nsIChannelEventSink,
public nsIInterfaceRequestor,
public nsIThreadRetargetableStreamListener
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSICHANNELEVENTSINK
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSITHREADRETARGETABLESTREAMLISTENER
explicit FetchDriver(InternalRequest* aRequest, nsIPrincipal* aPrincipal,
nsILoadGroup* aLoadGroup);
NS_IMETHOD Fetch(FetchDriverObserver* aObserver);
void
SetDocument(nsIDocument* aDocument);
private:
nsCOMPtr<nsIPrincipal> mPrincipal;
nsCOMPtr<nsILoadGroup> mLoadGroup;
RefPtr<InternalRequest> mRequest;
RefPtr<InternalResponse> mResponse;
nsCOMPtr<nsIOutputStream> mPipeOutputStream;
RefPtr<FetchDriverObserver> mObserver;
nsCOMPtr<nsIDocument> mDocument;
bool mHasBeenCrossSite;
bool mFoundOpaqueRedirect;
DebugOnly<bool> mResponseAvailableCalled;
DebugOnly<bool> mFetchCalled;
FetchDriver() = delete;
FetchDriver(const FetchDriver&) = delete;
FetchDriver& operator=(const FetchDriver&) = delete;
~FetchDriver();
nsresult SetTainting();
nsresult ContinueFetch();
nsresult HttpFetch();
bool IsUnsafeRequest();
// Returns the filtered response sent to the observer.
// Callers who don't have access to a channel can pass null for aFinalURI.
already_AddRefed<InternalResponse>
BeginAndGetFilteredResponse(InternalResponse* aResponse, nsIURI* aFinalURI);
// Utility since not all cases need to do any post processing of the filtered
// response.
nsresult FailWithNetworkError();
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_FetchDriver_h