157 lines
4.1 KiB
C++
157 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_FetchDriver_h
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#define mozilla_dom_FetchDriver_h
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#include "nsIChannelEventSink.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIStreamListener.h"
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#include "nsIThreadRetargetableStreamListener.h"
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#include "mozilla/ConsoleReportCollector.h"
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#include "mozilla/dom/AbortSignal.h"
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#include "mozilla/dom/SRIMetadata.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/net/ReferrerPolicy.h"
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class nsIConsoleReportCollector;
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class nsIDocument;
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class nsIOutputStream;
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class nsILoadGroup;
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class nsIPrincipal;
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namespace mozilla {
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namespace dom {
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class InternalRequest;
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class InternalResponse;
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/**
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* Provides callbacks to be called when response is available or on error.
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* Implemenations usually resolve or reject the promise returned from fetch().
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* The callbacks can be called synchronously or asynchronously from FetchDriver::Fetch.
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*/
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class FetchDriverObserver
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{
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public:
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FetchDriverObserver() : mReporter(new ConsoleReportCollector())
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, mGotResponseAvailable(false)
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{ }
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FetchDriverObserver);
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void OnResponseAvailable(InternalResponse* aResponse)
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{
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MOZ_ASSERT(!mGotResponseAvailable);
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mGotResponseAvailable = true;
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OnResponseAvailableInternal(aResponse);
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}
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enum EndReason
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{
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eAborted,
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eByNetworking,
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};
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virtual void OnResponseEnd(EndReason aReason)
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{ };
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nsIConsoleReportCollector* GetReporter() const
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{
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return mReporter;
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}
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virtual void FlushConsoleReport() = 0;
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virtual void OnDataAvailable() = 0;
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protected:
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virtual ~FetchDriverObserver()
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{ };
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virtual void OnResponseAvailableInternal(InternalResponse* aResponse) = 0;
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nsCOMPtr<nsIConsoleReportCollector> mReporter;
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private:
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bool mGotResponseAvailable;
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};
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class FetchDriver final : public nsIStreamListener,
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public nsIChannelEventSink,
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public nsIInterfaceRequestor,
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public nsIThreadRetargetableStreamListener,
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public AbortSignal::Follower
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSICHANNELEVENTSINK
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NS_DECL_NSIINTERFACEREQUESTOR
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NS_DECL_NSITHREADRETARGETABLESTREAMLISTENER
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FetchDriver(InternalRequest* aRequest,
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nsIPrincipal* aPrincipal,
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nsILoadGroup* aLoadGroup);
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nsresult Fetch(AbortSignal* aSignal,
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FetchDriverObserver* aObserver);
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void
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SetDocument(nsIDocument* aDocument);
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void
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SetWorkerScript(const nsACString& aWorkerScirpt)
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{
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MOZ_ASSERT(!aWorkerScirpt.IsEmpty());
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mWorkerScript = aWorkerScirpt;
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}
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// AbortSignal::Follower
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void
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Aborted() override;
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private:
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nsCOMPtr<nsIPrincipal> mPrincipal;
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nsCOMPtr<nsILoadGroup> mLoadGroup;
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RefPtr<InternalRequest> mRequest;
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RefPtr<InternalResponse> mResponse;
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nsCOMPtr<nsIOutputStream> mPipeOutputStream;
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RefPtr<FetchDriverObserver> mObserver;
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nsCOMPtr<nsIDocument> mDocument;
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nsCOMPtr<nsIChannel> mChannel;
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nsAutoPtr<SRICheckDataVerifier> mSRIDataVerifier;
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SRIMetadata mSRIMetadata;
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nsCString mWorkerScript;
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#ifdef DEBUG
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bool mResponseAvailableCalled;
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bool mFetchCalled;
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#endif
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FetchDriver() = delete;
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FetchDriver(const FetchDriver&) = delete;
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FetchDriver& operator=(const FetchDriver&) = delete;
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~FetchDriver();
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nsresult HttpFetch();
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// Returns the filtered response sent to the observer.
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already_AddRefed<InternalResponse>
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BeginAndGetFilteredResponse(InternalResponse* aResponse,
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bool aFoundOpaqueRedirect);
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// Utility since not all cases need to do any post processing of the filtered
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// response.
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void FailWithNetworkError();
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void SetRequestHeaders(nsIHttpChannel* aChannel) const;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_FetchDriver_h
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