mirror of
https://github.com/mozilla/gecko-dev.git
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03fa12d685
Differential Revision: https://phabricator.services.mozilla.com/D51335 --HG-- extra : moz-landing-system : lando
1471 lines
52 KiB
C++
1471 lines
52 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#include "mozilla/DebugOnly.h"
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#include "mozilla/dom/FetchDriver.h"
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#include "nsIAsyncVerifyRedirectCallback.h"
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#include "mozilla/dom/Document.h"
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#include "nsIInputStream.h"
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#include "nsIOutputStream.h"
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#include "nsIFileChannel.h"
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#include "nsIHttpChannel.h"
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#include "nsIHttpChannelInternal.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsISupportsPriority.h"
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#include "nsIThreadRetargetableRequest.h"
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#include "nsIUploadChannel2.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIPipe.h"
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#include "nsContentPolicyUtils.h"
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#include "nsDataHandler.h"
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#include "nsNetUtil.h"
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#include "nsPrintfCString.h"
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#include "nsProxyRelease.h"
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#include "nsStreamUtils.h"
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#include "nsStringStream.h"
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#include "nsHttpChannel.h"
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#include "mozilla/dom/BlobURLProtocolHandler.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/PerformanceStorage.h"
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#include "mozilla/dom/UserActivation.h"
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#include "mozilla/dom/WorkerCommon.h"
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#include "mozilla/net/NeckoChannelParams.h"
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#include "mozilla/ipc/PBackgroundSharedTypes.h"
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#include "mozilla/StaticPrefs_browser.h"
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#include "mozilla/StaticPrefs_network.h"
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#include "mozilla/StaticPrefs_privacy.h"
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#include "mozilla/Unused.h"
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#include "Fetch.h"
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#include "FetchUtil.h"
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#include "InternalRequest.h"
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#include "InternalResponse.h"
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namespace mozilla {
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namespace dom {
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namespace {
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void GetBlobURISpecFromChannel(nsIRequest* aRequest, nsCString& aBlobURISpec) {
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MOZ_ASSERT(aRequest);
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aBlobURISpec.SetIsVoid(true);
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nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
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if (!channel) {
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return;
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}
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nsCOMPtr<nsIURI> uri;
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nsresult rv = channel->GetURI(getter_AddRefs(uri));
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if (NS_FAILED(rv)) {
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return;
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}
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if (!dom::IsBlobURI(uri)) {
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return;
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}
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uri->GetSpec(aBlobURISpec);
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}
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bool ShouldCheckSRI(const InternalRequest* const aRequest,
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const InternalResponse* const aResponse) {
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MOZ_DIAGNOSTIC_ASSERT(aRequest);
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MOZ_DIAGNOSTIC_ASSERT(aResponse);
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return !aRequest->GetIntegrity().IsEmpty() &&
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aResponse->Type() != ResponseType::Error;
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}
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} // anonymous namespace
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//-----------------------------------------------------------------------------
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// AlternativeDataStreamListener
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//-----------------------------------------------------------------------------
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class AlternativeDataStreamListener final
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: public nsIStreamListener,
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public nsIThreadRetargetableStreamListener {
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSITHREADRETARGETABLESTREAMLISTENER
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// The status of AlternativeDataStreamListener
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// LOADING: is the initial status, loading the alternative data
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// COMPLETED: Alternative data loading is completed
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// CANCELED: Alternative data loading is canceled, this would make
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// AlternativeDataStreamListener ignore all channel callbacks
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// FALLBACK: fallback the channel callbacks to FetchDriver
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// Depends on different situaions, the status transition could be followings
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// 1. LOADING->COMPLETED
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// This is the normal status transition for alternative data loading
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//
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// 2. LOADING->CANCELED
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// LOADING->COMPLETED->CANCELED
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// Alternative data loading could be canceled when cacheId from alternative
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// data channel does not match with from main data channel(The cacheID
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// checking is in FetchDriver::OnStartRequest).
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// Notice the alternative data loading could finish before the cacheID
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// checking, so the statust transition could be
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// LOADING->COMPLETED->CANCELED
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//
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// 3. LOADING->FALLBACK
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// For the case that alternative data loading could not be initialized,
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// i.e. alternative data does not exist or no preferred alternative data
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// type is requested. Once the status becomes FALLBACK,
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// AlternativeDataStreamListener transits the channel callback request to
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// FetchDriver, and the status should not go back to LOADING, COMPLETED, or
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// CANCELED anymore.
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enum eStatus { LOADING = 0, COMPLETED, CANCELED, FALLBACK };
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AlternativeDataStreamListener(FetchDriver* aFetchDriver, nsIChannel* aChannel,
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const nsACString& aAlternativeDataType);
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eStatus Status();
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void Cancel();
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uint64_t GetAlternativeDataCacheEntryId();
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const nsACString& GetAlternativeDataType() const;
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already_AddRefed<nsICacheInfoChannel> GetCacheInfoChannel();
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already_AddRefed<nsIInputStream> GetAlternativeInputStream();
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private:
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~AlternativeDataStreamListener() = default;
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// This creates a strong reference cycle with FetchDriver and its
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// mAltDataListener. We need to clear at least one reference of them once the
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// data loading finishes.
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RefPtr<FetchDriver> mFetchDriver;
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nsCString mAlternativeDataType;
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nsCOMPtr<nsIInputStream> mPipeAlternativeInputStream;
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nsCOMPtr<nsIOutputStream> mPipeAlternativeOutputStream;
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uint64_t mAlternativeDataCacheEntryId;
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nsCOMPtr<nsICacheInfoChannel> mCacheInfoChannel;
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nsCOMPtr<nsIChannel> mChannel;
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Atomic<eStatus> mStatus;
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};
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NS_IMPL_ISUPPORTS(AlternativeDataStreamListener, nsIStreamListener,
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nsIThreadRetargetableStreamListener)
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AlternativeDataStreamListener::AlternativeDataStreamListener(
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FetchDriver* aFetchDriver, nsIChannel* aChannel,
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const nsACString& aAlternativeDataType)
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: mFetchDriver(aFetchDriver),
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mAlternativeDataType(aAlternativeDataType),
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mAlternativeDataCacheEntryId(0),
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mChannel(aChannel),
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mStatus(AlternativeDataStreamListener::LOADING) {
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MOZ_DIAGNOSTIC_ASSERT(mFetchDriver);
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MOZ_DIAGNOSTIC_ASSERT(mChannel);
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}
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AlternativeDataStreamListener::eStatus AlternativeDataStreamListener::Status() {
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return mStatus;
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}
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void AlternativeDataStreamListener::Cancel() {
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mAlternativeDataCacheEntryId = 0;
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mCacheInfoChannel = nullptr;
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mPipeAlternativeOutputStream = nullptr;
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mPipeAlternativeInputStream = nullptr;
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if (mChannel && mStatus != AlternativeDataStreamListener::FALLBACK) {
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// if mStatus is fallback, we need to keep channel to forward request back
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// to FetchDriver
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mChannel->Cancel(NS_BINDING_ABORTED);
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mChannel = nullptr;
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}
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mStatus = AlternativeDataStreamListener::CANCELED;
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}
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uint64_t AlternativeDataStreamListener::GetAlternativeDataCacheEntryId() {
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return mAlternativeDataCacheEntryId;
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}
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const nsACString& AlternativeDataStreamListener::GetAlternativeDataType()
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const {
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return mAlternativeDataType;
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}
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already_AddRefed<nsIInputStream>
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AlternativeDataStreamListener::GetAlternativeInputStream() {
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nsCOMPtr<nsIInputStream> inputStream = mPipeAlternativeInputStream;
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return inputStream.forget();
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}
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already_AddRefed<nsICacheInfoChannel>
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AlternativeDataStreamListener::GetCacheInfoChannel() {
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nsCOMPtr<nsICacheInfoChannel> channel = mCacheInfoChannel;
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return channel.forget();
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}
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NS_IMETHODIMP
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AlternativeDataStreamListener::OnStartRequest(nsIRequest* aRequest) {
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AssertIsOnMainThread();
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MOZ_ASSERT(!mAlternativeDataType.IsEmpty());
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// Checking the alternative data type is the same between we asked and the
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// saved in the channel.
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nsAutoCString alternativeDataType;
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nsCOMPtr<nsICacheInfoChannel> cic = do_QueryInterface(aRequest);
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mStatus = AlternativeDataStreamListener::LOADING;
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if (cic && NS_SUCCEEDED(cic->GetAlternativeDataType(alternativeDataType)) &&
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mAlternativeDataType.Equals(alternativeDataType) &&
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NS_SUCCEEDED(cic->GetCacheEntryId(&mAlternativeDataCacheEntryId))) {
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MOZ_DIAGNOSTIC_ASSERT(!mPipeAlternativeInputStream);
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MOZ_DIAGNOSTIC_ASSERT(!mPipeAlternativeOutputStream);
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nsresult rv =
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NS_NewPipe(getter_AddRefs(mPipeAlternativeInputStream),
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getter_AddRefs(mPipeAlternativeOutputStream),
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0 /* default segment size */, UINT32_MAX /* infinite pipe */,
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true /* non-blocking input, otherwise you deadlock */,
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false /* blocking output, since the pipe is 'in'finite */);
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if (NS_FAILED(rv)) {
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mFetchDriver->FailWithNetworkError(rv);
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return rv;
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}
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MOZ_DIAGNOSTIC_ASSERT(!mCacheInfoChannel);
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mCacheInfoChannel = cic;
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// call FetchDriver::HttpFetch to load main body
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MOZ_ASSERT(mFetchDriver);
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return mFetchDriver->HttpFetch();
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} else {
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// Needn't load alternative data, since alternative data does not exist.
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// Set status to FALLBACK to reuse the opened channel to load main body,
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// then call FetchDriver::OnStartRequest to continue the work. Unfortunately
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// can't change the stream listener to mFetchDriver, need to keep
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// AlternativeDataStreamListener alive to redirect OnDataAvailable and
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// OnStopRequest to mFetchDriver.
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MOZ_ASSERT(alternativeDataType.IsEmpty());
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mStatus = AlternativeDataStreamListener::FALLBACK;
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mAlternativeDataCacheEntryId = 0;
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MOZ_ASSERT(mFetchDriver);
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return mFetchDriver->OnStartRequest(aRequest);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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AlternativeDataStreamListener::OnDataAvailable(nsIRequest* aRequest,
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nsIInputStream* aInputStream,
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uint64_t aOffset,
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uint32_t aCount) {
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if (mStatus == AlternativeDataStreamListener::LOADING) {
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MOZ_ASSERT(mPipeAlternativeOutputStream);
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uint32_t read = 0;
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return aInputStream->ReadSegments(
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NS_CopySegmentToStream, mPipeAlternativeOutputStream, aCount, &read);
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}
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if (mStatus == AlternativeDataStreamListener::FALLBACK) {
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MOZ_ASSERT(mFetchDriver);
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return mFetchDriver->OnDataAvailable(aRequest, aInputStream, aOffset,
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aCount);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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AlternativeDataStreamListener::OnStopRequest(nsIRequest* aRequest,
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nsresult aStatusCode) {
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AssertIsOnMainThread();
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// Alternative data loading is going to finish, breaking the reference cycle
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// here by taking the ownership to a loacl variable.
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RefPtr<FetchDriver> fetchDriver = mFetchDriver.forget();
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if (mStatus == AlternativeDataStreamListener::CANCELED) {
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// do nothing
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return NS_OK;
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}
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if (mStatus == AlternativeDataStreamListener::FALLBACK) {
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MOZ_ASSERT(fetchDriver);
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return fetchDriver->OnStopRequest(aRequest, aStatusCode);
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}
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MOZ_DIAGNOSTIC_ASSERT(mStatus == AlternativeDataStreamListener::LOADING);
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MOZ_ASSERT(!mAlternativeDataType.IsEmpty() && mPipeAlternativeOutputStream &&
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mPipeAlternativeInputStream);
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mPipeAlternativeOutputStream->Close();
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mPipeAlternativeOutputStream = nullptr;
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// Cleanup the states for alternative data if needed.
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if (NS_FAILED(aStatusCode)) {
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mAlternativeDataCacheEntryId = 0;
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mCacheInfoChannel = nullptr;
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mPipeAlternativeInputStream = nullptr;
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}
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mStatus = AlternativeDataStreamListener::COMPLETED;
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// alternative data loading finish, call FetchDriver::FinishOnStopRequest to
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// continue the final step for the case FetchDriver::OnStopRequest is called
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// earlier than AlternativeDataStreamListener::OnStopRequest
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MOZ_ASSERT(fetchDriver);
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return fetchDriver->FinishOnStopRequest(this);
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}
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NS_IMETHODIMP
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AlternativeDataStreamListener::CheckListenerChain() { return NS_OK; }
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//-----------------------------------------------------------------------------
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// FetchDriver
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//-----------------------------------------------------------------------------
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NS_IMPL_ISUPPORTS(FetchDriver, nsIStreamListener, nsIChannelEventSink,
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nsIInterfaceRequestor, nsIThreadRetargetableStreamListener)
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FetchDriver::FetchDriver(InternalRequest* aRequest, nsIPrincipal* aPrincipal,
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nsILoadGroup* aLoadGroup,
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nsIEventTarget* aMainThreadEventTarget,
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nsICookieSettings* aCookieSettings,
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PerformanceStorage* aPerformanceStorage,
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bool aIsTrackingFetch)
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: mPrincipal(aPrincipal),
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mLoadGroup(aLoadGroup),
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mRequest(aRequest),
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mMainThreadEventTarget(aMainThreadEventTarget),
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mCookieSettings(aCookieSettings),
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mPerformanceStorage(aPerformanceStorage),
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mNeedToObserveOnDataAvailable(false),
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mIsTrackingFetch(aIsTrackingFetch),
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mOnStopRequestCalled(false)
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#ifdef DEBUG
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,
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mResponseAvailableCalled(false),
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mFetchCalled(false)
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#endif
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(aRequest);
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MOZ_ASSERT(aPrincipal);
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MOZ_ASSERT(aMainThreadEventTarget);
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}
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FetchDriver::~FetchDriver() {
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AssertIsOnMainThread();
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// We assert this since even on failures, we should call
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// FailWithNetworkError().
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MOZ_ASSERT(mResponseAvailableCalled);
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}
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nsresult FetchDriver::Fetch(AbortSignalImpl* aSignalImpl,
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FetchDriverObserver* aObserver) {
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AssertIsOnMainThread();
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#ifdef DEBUG
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MOZ_ASSERT(!mFetchCalled);
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mFetchCalled = true;
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#endif
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mObserver = aObserver;
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// FIXME(nsm): Deal with HSTS.
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MOZ_RELEASE_ASSERT(!mRequest->IsSynchronous(),
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"Synchronous fetch not supported");
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UniquePtr<mozilla::ipc::PrincipalInfo> principalInfo(
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new mozilla::ipc::PrincipalInfo());
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nsresult rv = PrincipalToPrincipalInfo(mPrincipal, principalInfo.get());
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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mRequest->SetPrincipalInfo(std::move(principalInfo));
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// If the signal is aborted, it's time to inform the observer and terminate
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// the operation.
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if (aSignalImpl) {
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if (aSignalImpl->Aborted()) {
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Abort();
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return NS_OK;
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}
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Follow(aSignalImpl);
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}
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rv = HttpFetch(mRequest->GetPreferredAlternativeDataType());
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if (NS_FAILED(rv)) {
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FailWithNetworkError(rv);
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}
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// Any failure is handled by FailWithNetworkError notifying the aObserver.
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return NS_OK;
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}
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// This function implements the "HTTP Fetch" algorithm from the Fetch spec.
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// Functionality is often split between here, the CORS listener proxy and the
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// Necko HTTP implementation.
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nsresult FetchDriver::HttpFetch(
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const nsACString& aPreferredAlternativeDataType) {
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MOZ_ASSERT(NS_IsMainThread());
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// Step 1. "Let response be null."
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mResponse = nullptr;
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mOnStopRequestCalled = false;
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nsresult rv;
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nsCOMPtr<nsIIOService> ios = do_GetIOService(&rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoCString url;
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mRequest->GetURL(url);
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nsCOMPtr<nsIURI> uri;
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rv = NS_NewURI(getter_AddRefs(uri), url);
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NS_ENSURE_SUCCESS(rv, rv);
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// Unsafe requests aren't allowed with when using no-core mode.
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if (mRequest->Mode() == RequestMode::No_cors && mRequest->UnsafeRequest() &&
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(!mRequest->HasSimpleMethod() ||
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!mRequest->Headers()->HasOnlySimpleHeaders())) {
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MOZ_ASSERT(false, "The API should have caught this");
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return NS_ERROR_DOM_BAD_URI;
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}
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// non-GET requests aren't allowed for blob.
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if (IsBlobURI(uri)) {
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nsAutoCString method;
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mRequest->GetMethod(method);
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if (!method.EqualsLiteral("GET")) {
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return NS_ERROR_DOM_NETWORK_ERR;
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}
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}
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// Step 2 deals with letting ServiceWorkers intercept requests. This is
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// handled by Necko after the channel is opened.
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// FIXME(nsm): Bug 1119026: The channel's skip service worker flag should be
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// set based on the Request's flag.
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// Step 3.1 "If the CORS preflight flag is set and one of these conditions is
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// true..." is handled by the CORS proxy.
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//
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// Step 3.2 "Set request's skip service worker flag." This isn't required
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// since Necko will fall back to the network if the ServiceWorker does not
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// respond with a valid Response.
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//
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// NS_StartCORSPreflight() will automatically kick off the original request
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// if it succeeds, so we need to have everything setup for the original
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// request too.
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// Step 3.3 "Let credentials flag be set if one of
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// - request's credentials mode is "include"
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// - request's credentials mode is "same-origin" and either the CORS flag
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// is unset or response tainting is "opaque"
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// is true, and unset otherwise."
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// Set skip serviceworker flag.
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// While the spec also gates on the client being a ServiceWorker, we can't
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// infer that here. Instead we rely on callers to set the flag correctly.
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const nsLoadFlags bypassFlag = mRequest->SkipServiceWorker()
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? nsIChannel::LOAD_BYPASS_SERVICE_WORKER
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: 0;
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nsSecurityFlags secFlags = 0;
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if (mRequest->Mode() == RequestMode::Cors) {
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secFlags |= nsILoadInfo::SEC_REQUIRE_CORS_DATA_INHERITS;
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} else if (mRequest->Mode() == RequestMode::Same_origin ||
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mRequest->Mode() == RequestMode::Navigate) {
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secFlags |= nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_DATA_INHERITS;
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} else if (mRequest->Mode() == RequestMode::No_cors) {
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secFlags |= nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS;
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} else {
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MOZ_ASSERT_UNREACHABLE("Unexpected request mode!");
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return NS_ERROR_UNEXPECTED;
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}
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if (mRequest->GetRedirectMode() != RequestRedirect::Follow) {
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secFlags |= nsILoadInfo::SEC_DONT_FOLLOW_REDIRECTS;
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}
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// This is handles the use credentials flag in "HTTP
|
||
// network or cache fetch" in the spec and decides whether to transmit
|
||
// cookies and other identifying information.
|
||
if (mRequest->GetCredentialsMode() == RequestCredentials::Include) {
|
||
secFlags |= nsILoadInfo::SEC_COOKIES_INCLUDE;
|
||
} else if (mRequest->GetCredentialsMode() == RequestCredentials::Omit) {
|
||
secFlags |= nsILoadInfo::SEC_COOKIES_OMIT;
|
||
} else if (mRequest->GetCredentialsMode() ==
|
||
RequestCredentials::Same_origin) {
|
||
secFlags |= nsILoadInfo::SEC_COOKIES_SAME_ORIGIN;
|
||
} else {
|
||
MOZ_ASSERT_UNREACHABLE("Unexpected credentials mode!");
|
||
return NS_ERROR_UNEXPECTED;
|
||
}
|
||
|
||
// From here on we create a channel and set its properties with the
|
||
// information from the InternalRequest. This is an implementation detail.
|
||
MOZ_ASSERT(mLoadGroup);
|
||
nsCOMPtr<nsIChannel> chan;
|
||
|
||
nsLoadFlags loadFlags = nsIRequest::LOAD_BACKGROUND | bypassFlag;
|
||
if (mDocument) {
|
||
MOZ_ASSERT(mDocument->NodePrincipal() == mPrincipal);
|
||
MOZ_ASSERT(mDocument->CookieSettings() == mCookieSettings);
|
||
rv = NS_NewChannel(getter_AddRefs(chan), uri, mDocument, secFlags,
|
||
mRequest->ContentPolicyType(),
|
||
nullptr, /* aPerformanceStorage */
|
||
mLoadGroup, nullptr, /* aCallbacks */
|
||
loadFlags, ios);
|
||
} else if (mClientInfo.isSome()) {
|
||
rv = NS_NewChannel(getter_AddRefs(chan), uri, mPrincipal, mClientInfo.ref(),
|
||
mController, secFlags, mRequest->ContentPolicyType(),
|
||
mCookieSettings, mPerformanceStorage, mLoadGroup,
|
||
nullptr, /* aCallbacks */
|
||
loadFlags, ios);
|
||
} else {
|
||
rv =
|
||
NS_NewChannel(getter_AddRefs(chan), uri, mPrincipal, secFlags,
|
||
mRequest->ContentPolicyType(), mCookieSettings,
|
||
mPerformanceStorage, mLoadGroup, nullptr, /* aCallbacks */
|
||
loadFlags, ios);
|
||
}
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
||
if (mCSPEventListener) {
|
||
nsCOMPtr<nsILoadInfo> loadInfo = chan->LoadInfo();
|
||
rv = loadInfo->SetCspEventListener(mCSPEventListener);
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
}
|
||
|
||
// Insert ourselves into the notification callbacks chain so we can set
|
||
// headers on redirects.
|
||
#ifdef DEBUG
|
||
{
|
||
nsCOMPtr<nsIInterfaceRequestor> notificationCallbacks;
|
||
chan->GetNotificationCallbacks(getter_AddRefs(notificationCallbacks));
|
||
MOZ_ASSERT(!notificationCallbacks);
|
||
}
|
||
#endif
|
||
chan->SetNotificationCallbacks(this);
|
||
|
||
nsCOMPtr<nsIClassOfService> cos(do_QueryInterface(chan));
|
||
// Mark channel as urgent-start if the Fetch is triggered by user input
|
||
// events.
|
||
if (cos && UserActivation::IsHandlingUserInput()) {
|
||
cos->AddClassFlags(nsIClassOfService::UrgentStart);
|
||
}
|
||
|
||
// Step 3.5 begins "HTTP network or cache fetch".
|
||
// HTTP network or cache fetch
|
||
// ---------------------------
|
||
// Step 1 "Let HTTPRequest..." The channel is the HTTPRequest.
|
||
nsCOMPtr<nsIHttpChannel> httpChan = do_QueryInterface(chan);
|
||
if (httpChan) {
|
||
// Copy the method.
|
||
nsAutoCString method;
|
||
mRequest->GetMethod(method);
|
||
rv = httpChan->SetRequestMethod(method);
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
||
// Set the same headers.
|
||
SetRequestHeaders(httpChan);
|
||
|
||
// Step 5 of https://fetch.spec.whatwg.org/#main-fetch
|
||
// If request's referrer policy is the empty string and request's client is
|
||
// non-null, then set request's referrer policy to request's client's
|
||
// associated referrer policy.
|
||
// Basically, "client" is not in our implementation, we use
|
||
// EnvironmentReferrerPolicy of the worker or document context
|
||
ReferrerPolicy referrerPolicy = mRequest->GetEnvironmentReferrerPolicy();
|
||
if (mRequest->ReferrerPolicy_() == ReferrerPolicy::_empty) {
|
||
mRequest->SetReferrerPolicy(referrerPolicy);
|
||
}
|
||
// Step 6 of https://fetch.spec.whatwg.org/#main-fetch
|
||
// If request’s referrer policy is the empty string,
|
||
// then set request’s referrer policy to the user-set default policy.
|
||
if (mRequest->ReferrerPolicy_() == ReferrerPolicy::_empty) {
|
||
nsCOMPtr<nsILoadInfo> loadInfo = httpChan->LoadInfo();
|
||
bool isPrivate = loadInfo->GetOriginAttributes().mPrivateBrowsingId > 0;
|
||
referrerPolicy =
|
||
ReferrerInfo::GetDefaultReferrerPolicy(httpChan, uri, isPrivate);
|
||
mRequest->SetReferrerPolicy(referrerPolicy);
|
||
}
|
||
|
||
rv = FetchUtil::SetRequestReferrer(mPrincipal, mDocument, httpChan,
|
||
mRequest);
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
||
// Bug 1120722 - Authorization will be handled later.
|
||
// Auth may require prompting, we don't support it yet.
|
||
// The next patch in this same bug prevents this from aborting the request.
|
||
// Credentials checks for CORS are handled by nsCORSListenerProxy,
|
||
|
||
nsCOMPtr<nsIHttpChannelInternal> internalChan = do_QueryInterface(httpChan);
|
||
|
||
// Conversion between enumerations is safe due to static asserts in
|
||
// dom/workers/ServiceWorkerManager.cpp
|
||
rv = internalChan->SetCorsMode(static_cast<uint32_t>(mRequest->Mode()));
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
rv = internalChan->SetRedirectMode(
|
||
static_cast<uint32_t>(mRequest->GetRedirectMode()));
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
mRequest->MaybeSkipCacheIfPerformingRevalidation();
|
||
rv = internalChan->SetFetchCacheMode(
|
||
static_cast<uint32_t>(mRequest->GetCacheMode()));
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
rv = internalChan->SetIntegrityMetadata(mRequest->GetIntegrity());
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
|
||
// Set the initiator type
|
||
nsCOMPtr<nsITimedChannel> timedChannel(do_QueryInterface(httpChan));
|
||
if (timedChannel) {
|
||
timedChannel->SetInitiatorType(NS_LITERAL_STRING("fetch"));
|
||
}
|
||
}
|
||
|
||
// Step 5. Proxy authentication will be handled by Necko.
|
||
|
||
// Continue setting up 'HTTPRequest'. Content-Type and body data.
|
||
nsCOMPtr<nsIUploadChannel2> uploadChan = do_QueryInterface(chan);
|
||
if (uploadChan) {
|
||
nsAutoCString contentType;
|
||
ErrorResult result;
|
||
mRequest->Headers()->GetFirst(NS_LITERAL_CSTRING("content-type"),
|
||
contentType, result);
|
||
// We don't actually expect "result" to have failed here: that only happens
|
||
// for invalid header names. But if for some reason it did, just propagate
|
||
// it out.
|
||
if (result.Failed()) {
|
||
return result.StealNSResult();
|
||
}
|
||
|
||
// Now contentType is the header that was set in mRequest->Headers(), or a
|
||
// void string if no header was set.
|
||
#ifdef DEBUG
|
||
bool hasContentTypeHeader =
|
||
mRequest->Headers()->Has(NS_LITERAL_CSTRING("content-type"), result);
|
||
MOZ_ASSERT(!result.Failed());
|
||
MOZ_ASSERT_IF(!hasContentTypeHeader, contentType.IsVoid());
|
||
#endif // DEBUG
|
||
|
||
int64_t bodyLength;
|
||
nsCOMPtr<nsIInputStream> bodyStream;
|
||
mRequest->GetBody(getter_AddRefs(bodyStream), &bodyLength);
|
||
if (bodyStream) {
|
||
nsAutoCString method;
|
||
mRequest->GetMethod(method);
|
||
rv = uploadChan->ExplicitSetUploadStream(bodyStream, contentType,
|
||
bodyLength, method,
|
||
false /* aStreamHasHeaders */);
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
}
|
||
}
|
||
|
||
// If preflight is required, start a "CORS preflight fetch"
|
||
// https://fetch.spec.whatwg.org/#cors-preflight-fetch-0. All the
|
||
// implementation is handled by the http channel calling into
|
||
// nsCORSListenerProxy. We just inform it which unsafe headers are included
|
||
// in the request.
|
||
if (mRequest->Mode() == RequestMode::Cors) {
|
||
AutoTArray<nsCString, 5> unsafeHeaders;
|
||
mRequest->Headers()->GetUnsafeHeaders(unsafeHeaders);
|
||
nsCOMPtr<nsILoadInfo> loadInfo = chan->LoadInfo();
|
||
loadInfo->SetCorsPreflightInfo(unsafeHeaders, false);
|
||
}
|
||
|
||
if (mIsTrackingFetch && StaticPrefs::network_http_tailing_enabled() && cos) {
|
||
cos->AddClassFlags(nsIClassOfService::Throttleable |
|
||
nsIClassOfService::Tail);
|
||
}
|
||
|
||
if (mIsTrackingFetch &&
|
||
StaticPrefs::privacy_trackingprotection_lower_network_priority()) {
|
||
nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(chan);
|
||
if (p) {
|
||
p->SetPriority(nsISupportsPriority::PRIORITY_LOWEST);
|
||
}
|
||
}
|
||
|
||
NotifyNetworkMonitorAlternateStack(chan, std::move(mOriginStack));
|
||
|
||
// if the preferred alternative data type in InternalRequest is not empty, set
|
||
// the data type on the created channel and also create a
|
||
// AlternativeDataStreamListener to be the stream listener of the channel.
|
||
if (!aPreferredAlternativeDataType.IsEmpty()) {
|
||
nsCOMPtr<nsICacheInfoChannel> cic = do_QueryInterface(chan);
|
||
if (cic) {
|
||
cic->PreferAlternativeDataType(aPreferredAlternativeDataType,
|
||
EmptyCString(), true);
|
||
MOZ_ASSERT(!mAltDataListener);
|
||
mAltDataListener = new AlternativeDataStreamListener(
|
||
this, chan, aPreferredAlternativeDataType);
|
||
rv = chan->AsyncOpen(mAltDataListener);
|
||
} else {
|
||
rv = chan->AsyncOpen(this);
|
||
}
|
||
} else {
|
||
// Integrity check cannot be done on alt-data yet.
|
||
if (mRequest->GetIntegrity().IsEmpty()) {
|
||
nsCOMPtr<nsICacheInfoChannel> cic = do_QueryInterface(chan);
|
||
if (cic) {
|
||
cic->PreferAlternativeDataType(
|
||
NS_LITERAL_CSTRING(WASM_ALT_DATA_TYPE_V1),
|
||
NS_LITERAL_CSTRING(WASM_CONTENT_TYPE), false);
|
||
}
|
||
}
|
||
|
||
rv = chan->AsyncOpen(this);
|
||
}
|
||
|
||
if (NS_FAILED(rv)) {
|
||
return rv;
|
||
}
|
||
|
||
// Step 4 onwards of "HTTP Fetch" is handled internally by Necko.
|
||
|
||
mChannel = chan;
|
||
return NS_OK;
|
||
}
|
||
already_AddRefed<InternalResponse> FetchDriver::BeginAndGetFilteredResponse(
|
||
InternalResponse* aResponse, bool aFoundOpaqueRedirect) {
|
||
MOZ_ASSERT(aResponse);
|
||
AutoTArray<nsCString, 4> reqURLList;
|
||
mRequest->GetURLListWithoutFragment(reqURLList);
|
||
MOZ_ASSERT(!reqURLList.IsEmpty());
|
||
aResponse->SetURLList(reqURLList);
|
||
RefPtr<InternalResponse> filteredResponse;
|
||
if (aFoundOpaqueRedirect) {
|
||
filteredResponse = aResponse->OpaqueRedirectResponse();
|
||
} else {
|
||
switch (mRequest->GetResponseTainting()) {
|
||
case LoadTainting::Basic:
|
||
filteredResponse = aResponse->BasicResponse();
|
||
break;
|
||
case LoadTainting::CORS:
|
||
filteredResponse = aResponse->CORSResponse();
|
||
break;
|
||
case LoadTainting::Opaque: {
|
||
filteredResponse = aResponse->OpaqueResponse();
|
||
nsresult rv = filteredResponse->GeneratePaddingInfo();
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return nullptr;
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
MOZ_CRASH("Unexpected case");
|
||
}
|
||
}
|
||
|
||
MOZ_ASSERT(filteredResponse);
|
||
MOZ_ASSERT(mObserver);
|
||
if (!ShouldCheckSRI(mRequest, filteredResponse)) {
|
||
mObserver->OnResponseAvailable(filteredResponse);
|
||
#ifdef DEBUG
|
||
mResponseAvailableCalled = true;
|
||
#endif
|
||
}
|
||
|
||
return filteredResponse.forget();
|
||
}
|
||
|
||
void FetchDriver::FailWithNetworkError(nsresult rv) {
|
||
AssertIsOnMainThread();
|
||
RefPtr<InternalResponse> error = InternalResponse::NetworkError(rv);
|
||
if (mObserver) {
|
||
mObserver->OnResponseAvailable(error);
|
||
#ifdef DEBUG
|
||
mResponseAvailableCalled = true;
|
||
#endif
|
||
mObserver->OnResponseEnd(FetchDriverObserver::eByNetworking);
|
||
mObserver = nullptr;
|
||
}
|
||
|
||
mChannel = nullptr;
|
||
}
|
||
|
||
NS_IMETHODIMP
|
||
FetchDriver::OnStartRequest(nsIRequest* aRequest) {
|
||
AssertIsOnMainThread();
|
||
|
||
// Note, this can be called multiple times if we are doing an opaqueredirect.
|
||
// In that case we will get a simulated OnStartRequest() and then the real
|
||
// channel will call in with an errored OnStartRequest().
|
||
|
||
if (!mChannel) {
|
||
MOZ_ASSERT(!mObserver);
|
||
return NS_BINDING_ABORTED;
|
||
}
|
||
|
||
nsresult rv;
|
||
aRequest->GetStatus(&rv);
|
||
if (NS_FAILED(rv)) {
|
||
FailWithNetworkError(rv);
|
||
return rv;
|
||
}
|
||
|
||
// We should only get to the following code once.
|
||
MOZ_ASSERT(!mPipeOutputStream);
|
||
|
||
if (!mObserver) {
|
||
MOZ_ASSERT(false, "We should have mObserver here.");
|
||
FailWithNetworkError(NS_ERROR_UNEXPECTED);
|
||
return NS_ERROR_UNEXPECTED;
|
||
}
|
||
|
||
mNeedToObserveOnDataAvailable = mObserver->NeedOnDataAvailable();
|
||
|
||
RefPtr<InternalResponse> response;
|
||
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
|
||
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aRequest);
|
||
|
||
// On a successful redirect we perform the following substeps of HTTP Fetch,
|
||
// step 5, "redirect status", step 11.
|
||
|
||
bool foundOpaqueRedirect = false;
|
||
|
||
nsAutoCString contentType;
|
||
channel->GetContentType(contentType);
|
||
|
||
int64_t contentLength = InternalResponse::UNKNOWN_BODY_SIZE;
|
||
rv = channel->GetContentLength(&contentLength);
|
||
MOZ_ASSERT_IF(NS_FAILED(rv),
|
||
contentLength == InternalResponse::UNKNOWN_BODY_SIZE);
|
||
|
||
if (httpChannel) {
|
||
uint32_t responseStatus;
|
||
rv = httpChannel->GetResponseStatus(&responseStatus);
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
|
||
if (mozilla::net::nsHttpChannel::IsRedirectStatus(responseStatus)) {
|
||
if (mRequest->GetRedirectMode() == RequestRedirect::Error) {
|
||
FailWithNetworkError(NS_BINDING_ABORTED);
|
||
return NS_BINDING_FAILED;
|
||
}
|
||
if (mRequest->GetRedirectMode() == RequestRedirect::Manual) {
|
||
foundOpaqueRedirect = true;
|
||
}
|
||
}
|
||
|
||
nsAutoCString statusText;
|
||
rv = httpChannel->GetResponseStatusText(statusText);
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
|
||
response = new InternalResponse(responseStatus, statusText,
|
||
mRequest->GetCredentialsMode());
|
||
|
||
UniquePtr<mozilla::ipc::PrincipalInfo> principalInfo(
|
||
new mozilla::ipc::PrincipalInfo());
|
||
nsresult rv = PrincipalToPrincipalInfo(mPrincipal, principalInfo.get());
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return rv;
|
||
}
|
||
|
||
response->SetPrincipalInfo(std::move(principalInfo));
|
||
|
||
response->Headers()->FillResponseHeaders(httpChannel);
|
||
|
||
// If Content-Encoding or Transfer-Encoding headers are set, then the actual
|
||
// Content-Length (which refer to the decoded data) is obscured behind the
|
||
// encodings.
|
||
ErrorResult result;
|
||
if (response->Headers()->Has(NS_LITERAL_CSTRING("content-encoding"),
|
||
result) ||
|
||
response->Headers()->Has(NS_LITERAL_CSTRING("transfer-encoding"),
|
||
result)) {
|
||
// We cannot trust the content-length when content-encoding or
|
||
// transfer-encoding are set. There are many servers which just
|
||
// get this wrong.
|
||
contentLength = InternalResponse::UNKNOWN_BODY_SIZE;
|
||
}
|
||
MOZ_ASSERT(!result.Failed());
|
||
} else {
|
||
response = new InternalResponse(200, NS_LITERAL_CSTRING("OK"),
|
||
mRequest->GetCredentialsMode());
|
||
|
||
if (!contentType.IsEmpty()) {
|
||
nsAutoCString contentCharset;
|
||
channel->GetContentCharset(contentCharset);
|
||
if (NS_SUCCEEDED(rv) && !contentCharset.IsEmpty()) {
|
||
contentType += NS_LITERAL_CSTRING(";charset=") + contentCharset;
|
||
}
|
||
|
||
IgnoredErrorResult result;
|
||
response->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"),
|
||
contentType, result);
|
||
MOZ_ASSERT(!result.Failed());
|
||
}
|
||
|
||
if (contentLength > 0) {
|
||
nsAutoCString contentLenStr;
|
||
contentLenStr.AppendInt(contentLength);
|
||
|
||
IgnoredErrorResult result;
|
||
response->Headers()->Append(NS_LITERAL_CSTRING("Content-Length"),
|
||
contentLenStr, result);
|
||
MOZ_ASSERT(!result.Failed());
|
||
}
|
||
}
|
||
|
||
nsCOMPtr<nsICacheInfoChannel> cic = do_QueryInterface(aRequest);
|
||
if (cic) {
|
||
if (mAltDataListener) {
|
||
// Skip the case that mAltDataListener->Status() equals to FALLBACK, that
|
||
// means the opened channel for alternative data loading is reused for
|
||
// loading the main data.
|
||
if (mAltDataListener->Status() !=
|
||
AlternativeDataStreamListener::FALLBACK) {
|
||
// Verify the cache ID is the same with from alternative data cache.
|
||
// If the cache ID is different, droping the alternative data loading,
|
||
// otherwise setup the response's alternative body and cacheInfoChannel.
|
||
uint64_t cacheEntryId = 0;
|
||
if (NS_SUCCEEDED(cic->GetCacheEntryId(&cacheEntryId)) &&
|
||
cacheEntryId !=
|
||
mAltDataListener->GetAlternativeDataCacheEntryId()) {
|
||
mAltDataListener->Cancel();
|
||
} else {
|
||
// AlternativeDataStreamListener::OnStartRequest had already been
|
||
// called, the alternative data input stream and cacheInfo channel
|
||
// must be created.
|
||
nsCOMPtr<nsICacheInfoChannel> cacheInfo =
|
||
mAltDataListener->GetCacheInfoChannel();
|
||
nsCOMPtr<nsIInputStream> altInputStream =
|
||
mAltDataListener->GetAlternativeInputStream();
|
||
MOZ_ASSERT(altInputStream && cacheInfo);
|
||
response->SetAlternativeBody(altInputStream);
|
||
nsMainThreadPtrHandle<nsICacheInfoChannel> handle(
|
||
new nsMainThreadPtrHolder<nsICacheInfoChannel>(
|
||
"nsICacheInfoChannel", cacheInfo, false));
|
||
response->SetCacheInfoChannel(handle);
|
||
}
|
||
} else if (!mAltDataListener->GetAlternativeDataType().IsEmpty()) {
|
||
// If the status is FALLBACK and the
|
||
// mAltDataListener::mAlternativeDataType is not empty, that means the
|
||
// data need to be saved into cache, setup the response's
|
||
// nsICacheInfoChannel for caching the data after loading.
|
||
nsMainThreadPtrHandle<nsICacheInfoChannel> handle(
|
||
new nsMainThreadPtrHolder<nsICacheInfoChannel>(
|
||
"nsICacheInfoChannel", cic, false));
|
||
response->SetCacheInfoChannel(handle);
|
||
}
|
||
} else if (!cic->PreferredAlternativeDataTypes().IsEmpty()) {
|
||
MOZ_ASSERT(cic->PreferredAlternativeDataTypes().Length() == 1);
|
||
MOZ_ASSERT(cic->PreferredAlternativeDataTypes()[0].type().EqualsLiteral(
|
||
WASM_ALT_DATA_TYPE_V1));
|
||
MOZ_ASSERT(
|
||
cic->PreferredAlternativeDataTypes()[0].contentType().EqualsLiteral(
|
||
WASM_CONTENT_TYPE));
|
||
|
||
if (contentType.EqualsLiteral(WASM_CONTENT_TYPE)) {
|
||
// We want to attach the CacheInfoChannel to the response object such
|
||
// that we can track its origin when the Response object is manipulated
|
||
// by JavaScript code. This is important for WebAssembly, which uses
|
||
// fetch to query its sources in JavaScript and transfer the Response
|
||
// object to other function responsible for storing the alternate data
|
||
// using the CacheInfoChannel.
|
||
nsMainThreadPtrHandle<nsICacheInfoChannel> handle(
|
||
new nsMainThreadPtrHolder<nsICacheInfoChannel>(
|
||
"nsICacheInfoChannel", cic, false));
|
||
response->SetCacheInfoChannel(handle);
|
||
}
|
||
}
|
||
}
|
||
|
||
// We open a pipe so that we can immediately set the pipe's read end as the
|
||
// response's body. Setting the segment size to UINT32_MAX means that the
|
||
// pipe has infinite space. The nsIChannel will continue to buffer data in
|
||
// xpcom events even if we block on a fixed size pipe. It might be possible
|
||
// to suspend the channel and then resume when there is space available, but
|
||
// for now use an infinite pipe to avoid blocking.
|
||
nsCOMPtr<nsIInputStream> pipeInputStream;
|
||
rv = NS_NewPipe(getter_AddRefs(pipeInputStream),
|
||
getter_AddRefs(mPipeOutputStream),
|
||
0, /* default segment size */
|
||
UINT32_MAX /* infinite pipe */,
|
||
true /* non-blocking input, otherwise you deadlock */,
|
||
false /* blocking output, since the pipe is 'in'finite */);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
FailWithNetworkError(rv);
|
||
// Cancel request.
|
||
return rv;
|
||
}
|
||
response->SetBody(pipeInputStream, contentLength);
|
||
|
||
// If the request is a file channel, then remember the local path to
|
||
// that file so we can later create File blobs rather than plain ones.
|
||
nsCOMPtr<nsIFileChannel> fc = do_QueryInterface(aRequest);
|
||
if (fc) {
|
||
nsCOMPtr<nsIFile> file;
|
||
rv = fc->GetFile(getter_AddRefs(file));
|
||
if (!NS_WARN_IF(NS_FAILED(rv))) {
|
||
nsAutoString path;
|
||
file->GetPath(path);
|
||
response->SetBodyLocalPath(path);
|
||
}
|
||
} else {
|
||
// If the request is a blob URI, then remember that URI so that we
|
||
// can later just use that blob instance instead of cloning it.
|
||
nsCString blobURISpec;
|
||
GetBlobURISpecFromChannel(aRequest, blobURISpec);
|
||
if (!blobURISpec.IsVoid()) {
|
||
response->SetBodyBlobURISpec(blobURISpec);
|
||
}
|
||
}
|
||
|
||
response->InitChannelInfo(channel);
|
||
|
||
nsCOMPtr<nsIURI> channelURI;
|
||
rv = channel->GetURI(getter_AddRefs(channelURI));
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
FailWithNetworkError(rv);
|
||
// Cancel request.
|
||
return rv;
|
||
}
|
||
|
||
nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo();
|
||
// Propagate any tainting from the channel back to our response here. This
|
||
// step is not reflected in the spec because the spec is written such that
|
||
// FetchEvent.respondWith() just passes the already-tainted Response back to
|
||
// the outer fetch(). In gecko, however, we serialize the Response through
|
||
// the channel and must regenerate the tainting from the channel in the
|
||
// interception case.
|
||
mRequest->MaybeIncreaseResponseTainting(loadInfo->GetTainting());
|
||
|
||
// Resolves fetch() promise which may trigger code running in a worker. Make
|
||
// sure the Response is fully initialized before calling this.
|
||
mResponse = BeginAndGetFilteredResponse(response, foundOpaqueRedirect);
|
||
if (NS_WARN_IF(!mResponse)) {
|
||
// Fail to generate a paddingInfo for opaque response.
|
||
MOZ_DIAGNOSTIC_ASSERT(mRequest->GetResponseTainting() ==
|
||
LoadTainting::Opaque &&
|
||
!foundOpaqueRedirect);
|
||
FailWithNetworkError(NS_ERROR_UNEXPECTED);
|
||
return NS_ERROR_UNEXPECTED;
|
||
}
|
||
|
||
// From "Main Fetch" step 19: SRI-part1.
|
||
if (ShouldCheckSRI(mRequest, mResponse) && mSRIMetadata.IsEmpty()) {
|
||
nsIConsoleReportCollector* reporter = nullptr;
|
||
if (mObserver) {
|
||
reporter = mObserver->GetReporter();
|
||
}
|
||
|
||
nsAutoCString sourceUri;
|
||
if (mDocument && mDocument->GetDocumentURI()) {
|
||
mDocument->GetDocumentURI()->GetAsciiSpec(sourceUri);
|
||
} else if (!mWorkerScript.IsEmpty()) {
|
||
sourceUri.Assign(mWorkerScript);
|
||
}
|
||
SRICheck::IntegrityMetadata(mRequest->GetIntegrity(), sourceUri, reporter,
|
||
&mSRIMetadata);
|
||
mSRIDataVerifier =
|
||
new SRICheckDataVerifier(mSRIMetadata, sourceUri, reporter);
|
||
|
||
// Do not retarget off main thread when using SRI API.
|
||
return NS_OK;
|
||
}
|
||
|
||
nsCOMPtr<nsIEventTarget> sts =
|
||
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
FailWithNetworkError(rv);
|
||
// Cancel request.
|
||
return rv;
|
||
}
|
||
|
||
// Try to retarget off main thread.
|
||
if (nsCOMPtr<nsIThreadRetargetableRequest> rr = do_QueryInterface(aRequest)) {
|
||
Unused << NS_WARN_IF(NS_FAILED(rr->RetargetDeliveryTo(sts)));
|
||
}
|
||
return NS_OK;
|
||
}
|
||
|
||
namespace {
|
||
|
||
// Runnable to call the observer OnDataAvailable on the main-thread.
|
||
class DataAvailableRunnable final : public Runnable {
|
||
RefPtr<FetchDriverObserver> mObserver;
|
||
|
||
public:
|
||
explicit DataAvailableRunnable(FetchDriverObserver* aObserver)
|
||
: Runnable("dom::DataAvailableRunnable"), mObserver(aObserver) {
|
||
MOZ_ASSERT(aObserver);
|
||
}
|
||
|
||
NS_IMETHOD
|
||
Run() override {
|
||
mObserver->OnDataAvailable();
|
||
mObserver = nullptr;
|
||
return NS_OK;
|
||
}
|
||
};
|
||
|
||
struct SRIVerifierAndOutputHolder {
|
||
SRIVerifierAndOutputHolder(SRICheckDataVerifier* aVerifier,
|
||
nsIOutputStream* aOutputStream)
|
||
: mVerifier(aVerifier), mOutputStream(aOutputStream) {}
|
||
|
||
SRICheckDataVerifier* mVerifier;
|
||
nsIOutputStream* mOutputStream;
|
||
|
||
private:
|
||
SRIVerifierAndOutputHolder() = delete;
|
||
};
|
||
|
||
// Just like NS_CopySegmentToStream, but also sends the data into an
|
||
// SRICheckDataVerifier.
|
||
nsresult CopySegmentToStreamAndSRI(nsIInputStream* aInStr, void* aClosure,
|
||
const char* aBuffer, uint32_t aOffset,
|
||
uint32_t aCount, uint32_t* aCountWritten) {
|
||
auto holder = static_cast<SRIVerifierAndOutputHolder*>(aClosure);
|
||
MOZ_DIAGNOSTIC_ASSERT(holder && holder->mVerifier && holder->mOutputStream,
|
||
"Bogus holder");
|
||
nsresult rv = holder->mVerifier->Update(
|
||
aCount, reinterpret_cast<const uint8_t*>(aBuffer));
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
||
// The rest is just like NS_CopySegmentToStream.
|
||
*aCountWritten = 0;
|
||
while (aCount) {
|
||
uint32_t n = 0;
|
||
rv = holder->mOutputStream->Write(aBuffer, aCount, &n);
|
||
if (NS_FAILED(rv)) {
|
||
return rv;
|
||
}
|
||
aBuffer += n;
|
||
aCount -= n;
|
||
*aCountWritten += n;
|
||
}
|
||
return NS_OK;
|
||
}
|
||
|
||
} // anonymous namespace
|
||
|
||
NS_IMETHODIMP
|
||
FetchDriver::OnDataAvailable(nsIRequest* aRequest, nsIInputStream* aInputStream,
|
||
uint64_t aOffset, uint32_t aCount) {
|
||
// NB: This can be called on any thread! But we're guaranteed that it is
|
||
// called between OnStartRequest and OnStopRequest, so we don't need to worry
|
||
// about races.
|
||
|
||
if (mNeedToObserveOnDataAvailable) {
|
||
mNeedToObserveOnDataAvailable = false;
|
||
if (mObserver) {
|
||
if (NS_IsMainThread()) {
|
||
mObserver->OnDataAvailable();
|
||
} else {
|
||
RefPtr<Runnable> runnable = new DataAvailableRunnable(mObserver);
|
||
nsresult rv = mMainThreadEventTarget->Dispatch(runnable.forget(),
|
||
NS_DISPATCH_NORMAL);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return rv;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Needs to be initialized to 0 because in some cases nsStringInputStream may
|
||
// not write to aRead.
|
||
uint32_t aRead = 0;
|
||
MOZ_ASSERT(mResponse);
|
||
MOZ_ASSERT(mPipeOutputStream);
|
||
|
||
// From "Main Fetch" step 19: SRI-part2.
|
||
// Note: Avoid checking the hidden opaque body.
|
||
nsresult rv;
|
||
if (mResponse->Type() != ResponseType::Opaque &&
|
||
ShouldCheckSRI(mRequest, mResponse)) {
|
||
MOZ_ASSERT(mSRIDataVerifier);
|
||
|
||
SRIVerifierAndOutputHolder holder(mSRIDataVerifier, mPipeOutputStream);
|
||
rv = aInputStream->ReadSegments(CopySegmentToStreamAndSRI, &holder, aCount,
|
||
&aRead);
|
||
} else {
|
||
rv = aInputStream->ReadSegments(NS_CopySegmentToStream, mPipeOutputStream,
|
||
aCount, &aRead);
|
||
}
|
||
|
||
// If no data was read, it's possible the output stream is closed but the
|
||
// ReadSegments call followed its contract of returning NS_OK despite write
|
||
// errors. Unfortunately, nsIOutputStream has an ill-conceived contract when
|
||
// taken together with ReadSegments' contract, because the pipe will just
|
||
// NS_OK if we try and invoke its Write* functions ourselves with a 0 count.
|
||
// So we must just assume the pipe is broken.
|
||
if (aRead == 0 && aCount != 0) {
|
||
return NS_BASE_STREAM_CLOSED;
|
||
}
|
||
return rv;
|
||
}
|
||
|
||
NS_IMETHODIMP
|
||
FetchDriver::OnStopRequest(nsIRequest* aRequest, nsresult aStatusCode) {
|
||
AssertIsOnMainThread();
|
||
|
||
MOZ_DIAGNOSTIC_ASSERT(!mOnStopRequestCalled);
|
||
mOnStopRequestCalled = true;
|
||
|
||
// main data loading is going to finish, breaking the reference cycle.
|
||
RefPtr<AlternativeDataStreamListener> altDataListener =
|
||
mAltDataListener.forget();
|
||
|
||
// We need to check mObserver, which is nulled by FailWithNetworkError(),
|
||
// because in the case of "error" redirect mode, aStatusCode may be NS_OK but
|
||
// mResponse will definitely be null so we must not take the else branch.
|
||
if (NS_FAILED(aStatusCode) || !mObserver) {
|
||
nsCOMPtr<nsIAsyncOutputStream> outputStream =
|
||
do_QueryInterface(mPipeOutputStream);
|
||
if (outputStream) {
|
||
outputStream->CloseWithStatus(NS_FAILED(aStatusCode) ? aStatusCode
|
||
: NS_BINDING_FAILED);
|
||
}
|
||
if (altDataListener) {
|
||
altDataListener->Cancel();
|
||
}
|
||
|
||
// We proceed as usual here, since we've already created a successful
|
||
// response from OnStartRequest.
|
||
} else {
|
||
MOZ_ASSERT(mResponse);
|
||
MOZ_ASSERT(!mResponse->IsError());
|
||
|
||
// From "Main Fetch" step 19: SRI-part3.
|
||
if (ShouldCheckSRI(mRequest, mResponse)) {
|
||
MOZ_ASSERT(mSRIDataVerifier);
|
||
|
||
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
|
||
|
||
nsIConsoleReportCollector* reporter = nullptr;
|
||
if (mObserver) {
|
||
reporter = mObserver->GetReporter();
|
||
}
|
||
|
||
nsAutoCString sourceUri;
|
||
if (mDocument && mDocument->GetDocumentURI()) {
|
||
mDocument->GetDocumentURI()->GetAsciiSpec(sourceUri);
|
||
} else if (!mWorkerScript.IsEmpty()) {
|
||
sourceUri.Assign(mWorkerScript);
|
||
}
|
||
nsresult rv =
|
||
mSRIDataVerifier->Verify(mSRIMetadata, channel, sourceUri, reporter);
|
||
if (NS_FAILED(rv)) {
|
||
if (altDataListener) {
|
||
altDataListener->Cancel();
|
||
}
|
||
FailWithNetworkError(rv);
|
||
// Cancel request.
|
||
return rv;
|
||
}
|
||
}
|
||
|
||
if (mPipeOutputStream) {
|
||
mPipeOutputStream->Close();
|
||
}
|
||
}
|
||
|
||
return FinishOnStopRequest(altDataListener);
|
||
}
|
||
|
||
nsresult FetchDriver::FinishOnStopRequest(
|
||
AlternativeDataStreamListener* aAltDataListener) {
|
||
AssertIsOnMainThread();
|
||
// OnStopRequest is not called from channel, that means the main data loading
|
||
// does not finish yet. Reaching here since alternative data loading finishes.
|
||
if (!mOnStopRequestCalled) {
|
||
return NS_OK;
|
||
}
|
||
|
||
MOZ_DIAGNOSTIC_ASSERT(!mAltDataListener);
|
||
// Wait for alternative data loading finish if we needed it.
|
||
if (aAltDataListener &&
|
||
aAltDataListener->Status() == AlternativeDataStreamListener::LOADING) {
|
||
// For LOADING case, channel holds the reference of altDataListener, no need
|
||
// to restore it to mAltDataListener.
|
||
return NS_OK;
|
||
}
|
||
|
||
if (mObserver) {
|
||
// From "Main Fetch" step 19.1, 19.2: Process response.
|
||
if (ShouldCheckSRI(mRequest, mResponse)) {
|
||
MOZ_ASSERT(mResponse);
|
||
mObserver->OnResponseAvailable(mResponse);
|
||
#ifdef DEBUG
|
||
mResponseAvailableCalled = true;
|
||
#endif
|
||
}
|
||
|
||
mObserver->OnResponseEnd(FetchDriverObserver::eByNetworking);
|
||
mObserver = nullptr;
|
||
}
|
||
|
||
mChannel = nullptr;
|
||
return NS_OK;
|
||
}
|
||
|
||
NS_IMETHODIMP
|
||
FetchDriver::AsyncOnChannelRedirect(nsIChannel* aOldChannel,
|
||
nsIChannel* aNewChannel, uint32_t aFlags,
|
||
nsIAsyncVerifyRedirectCallback* aCallback) {
|
||
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aNewChannel);
|
||
if (httpChannel) {
|
||
SetRequestHeaders(httpChannel);
|
||
}
|
||
|
||
// "HTTP-redirect fetch": step 14 "Append locationURL to request's URL list."
|
||
// However, ignore internal redirects here. We don't want to flip
|
||
// Response.redirected to true if an internal redirect occurs. These
|
||
// should be transparent to script.
|
||
nsCOMPtr<nsIURI> uri;
|
||
MOZ_ALWAYS_SUCCEEDS(aNewChannel->GetURI(getter_AddRefs(uri)));
|
||
|
||
nsCOMPtr<nsIURI> uriClone;
|
||
nsresult rv = NS_GetURIWithoutRef(uri, getter_AddRefs(uriClone));
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return rv;
|
||
}
|
||
nsCString spec;
|
||
rv = uriClone->GetSpec(spec);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return rv;
|
||
}
|
||
nsCString fragment;
|
||
rv = uri->GetRef(fragment);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return rv;
|
||
}
|
||
|
||
if (!(aFlags & nsIChannelEventSink::REDIRECT_INTERNAL)) {
|
||
mRequest->AddURL(spec, fragment);
|
||
} else {
|
||
// Overwrite the URL only when the request is redirected by a service
|
||
// worker.
|
||
mRequest->SetURLForInternalRedirect(aFlags, spec, fragment);
|
||
}
|
||
|
||
// In redirect, httpChannel already took referrer-policy into account, so
|
||
// updates request’s associated referrer policy from channel.
|
||
if (httpChannel) {
|
||
nsAutoString computedReferrerSpec;
|
||
nsCOMPtr<nsIReferrerInfo> referrerInfo = httpChannel->GetReferrerInfo();
|
||
if (referrerInfo) {
|
||
mRequest->SetReferrerPolicy(referrerInfo->ReferrerPolicy());
|
||
Unused << referrerInfo->GetComputedReferrerSpec(computedReferrerSpec);
|
||
}
|
||
|
||
// Step 8 https://fetch.spec.whatwg.org/#main-fetch
|
||
// If request’s referrer is not "no-referrer" (empty), set request’s
|
||
// referrer to the result of invoking determine request’s referrer.
|
||
mRequest->SetReferrer(computedReferrerSpec);
|
||
}
|
||
|
||
aCallback->OnRedirectVerifyCallback(NS_OK);
|
||
return NS_OK;
|
||
}
|
||
|
||
NS_IMETHODIMP
|
||
FetchDriver::CheckListenerChain() { return NS_OK; }
|
||
|
||
NS_IMETHODIMP
|
||
FetchDriver::GetInterface(const nsIID& aIID, void** aResult) {
|
||
if (aIID.Equals(NS_GET_IID(nsIChannelEventSink))) {
|
||
*aResult = static_cast<nsIChannelEventSink*>(this);
|
||
NS_ADDREF_THIS();
|
||
return NS_OK;
|
||
}
|
||
if (aIID.Equals(NS_GET_IID(nsIStreamListener))) {
|
||
*aResult = static_cast<nsIStreamListener*>(this);
|
||
NS_ADDREF_THIS();
|
||
return NS_OK;
|
||
}
|
||
if (aIID.Equals(NS_GET_IID(nsIRequestObserver))) {
|
||
*aResult = static_cast<nsIRequestObserver*>(this);
|
||
NS_ADDREF_THIS();
|
||
return NS_OK;
|
||
}
|
||
|
||
return QueryInterface(aIID, aResult);
|
||
}
|
||
|
||
void FetchDriver::SetDocument(Document* aDocument) {
|
||
// Cannot set document after Fetch() has been called.
|
||
MOZ_ASSERT(!mFetchCalled);
|
||
mDocument = aDocument;
|
||
}
|
||
|
||
void FetchDriver::SetCSPEventListener(nsICSPEventListener* aCSPEventListener) {
|
||
MOZ_ASSERT(!mFetchCalled);
|
||
mCSPEventListener = aCSPEventListener;
|
||
}
|
||
|
||
void FetchDriver::SetClientInfo(const ClientInfo& aClientInfo) {
|
||
MOZ_ASSERT(!mFetchCalled);
|
||
mClientInfo.emplace(aClientInfo);
|
||
}
|
||
|
||
void FetchDriver::SetController(
|
||
const Maybe<ServiceWorkerDescriptor>& aController) {
|
||
MOZ_ASSERT(!mFetchCalled);
|
||
mController = aController;
|
||
}
|
||
|
||
void FetchDriver::SetRequestHeaders(nsIHttpChannel* aChannel) const {
|
||
MOZ_ASSERT(aChannel);
|
||
|
||
// nsIHttpChannel has a set of pre-configured headers (Accept,
|
||
// Accept-Languages, ...) and we don't want to merge the Request's headers
|
||
// with them. This array is used to know if the current header has been aleady
|
||
// set, if yes, we ask necko to merge it with the previous one, otherwise, we
|
||
// don't want the merge.
|
||
nsTArray<nsCString> headersSet;
|
||
|
||
AutoTArray<InternalHeaders::Entry, 5> headers;
|
||
mRequest->Headers()->GetEntries(headers);
|
||
for (uint32_t i = 0; i < headers.Length(); ++i) {
|
||
bool alreadySet = headersSet.Contains(headers[i].mName);
|
||
if (!alreadySet) {
|
||
headersSet.AppendElement(headers[i].mName);
|
||
}
|
||
|
||
if (headers[i].mValue.IsEmpty()) {
|
||
DebugOnly<nsresult> rv =
|
||
aChannel->SetEmptyRequestHeader(headers[i].mName);
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
} else {
|
||
DebugOnly<nsresult> rv = aChannel->SetRequestHeader(
|
||
headers[i].mName, headers[i].mValue, alreadySet /* merge */);
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
}
|
||
}
|
||
|
||
nsAutoCString method;
|
||
mRequest->GetMethod(method);
|
||
if (!method.EqualsLiteral("GET") && !method.EqualsLiteral("HEAD")) {
|
||
nsAutoString origin;
|
||
if (NS_SUCCEEDED(nsContentUtils::GetUTFOrigin(mPrincipal, origin))) {
|
||
DebugOnly<nsresult> rv = aChannel->SetRequestHeader(
|
||
nsDependentCString(net::nsHttp::Origin),
|
||
NS_ConvertUTF16toUTF8(origin), false /* merge */);
|
||
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
||
}
|
||
}
|
||
}
|
||
|
||
void FetchDriver::Abort() {
|
||
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
|
||
|
||
if (mObserver) {
|
||
#ifdef DEBUG
|
||
mResponseAvailableCalled = true;
|
||
#endif
|
||
mObserver->OnResponseEnd(FetchDriverObserver::eAborted);
|
||
mObserver = nullptr;
|
||
}
|
||
|
||
if (mChannel) {
|
||
mChannel->Cancel(NS_BINDING_ABORTED);
|
||
mChannel = nullptr;
|
||
}
|
||
}
|
||
|
||
} // namespace dom
|
||
} // namespace mozilla
|