forked from mirrors/gecko-dev
32ab8293ff
ReferrerPolicy gets tossed back and forth as a uint32_t and ReferrerPolicy enum in header file. Expose ReferrerPolicyValues from webidl file and use consistently in native code. Differential Revision: https://phabricator.services.mozilla.com/D41954 --HG-- extra : moz-landing-system : lando
557 lines
17 KiB
C++
557 lines
17 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 "FetchUtil.h"
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#include "nsError.h"
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#include "nsString.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/InternalRequest.h"
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#include "mozilla/dom/WorkerRef.h"
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namespace mozilla {
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namespace dom {
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// static
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nsresult FetchUtil::GetValidRequestMethod(const nsACString& aMethod,
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nsCString& outMethod) {
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nsAutoCString upperCaseMethod(aMethod);
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ToUpperCase(upperCaseMethod);
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if (!NS_IsValidHTTPToken(aMethod)) {
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outMethod.SetIsVoid(true);
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return NS_ERROR_DOM_SYNTAX_ERR;
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}
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if (upperCaseMethod.EqualsLiteral("CONNECT") ||
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upperCaseMethod.EqualsLiteral("TRACE") ||
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upperCaseMethod.EqualsLiteral("TRACK")) {
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outMethod.SetIsVoid(true);
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return NS_ERROR_DOM_SECURITY_ERR;
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}
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if (upperCaseMethod.EqualsLiteral("DELETE") ||
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upperCaseMethod.EqualsLiteral("GET") ||
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upperCaseMethod.EqualsLiteral("HEAD") ||
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upperCaseMethod.EqualsLiteral("OPTIONS") ||
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upperCaseMethod.EqualsLiteral("POST") ||
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upperCaseMethod.EqualsLiteral("PUT")) {
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outMethod = upperCaseMethod;
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} else {
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outMethod = aMethod; // Case unchanged for non-standard methods
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}
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return NS_OK;
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}
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static bool FindCRLF(nsACString::const_iterator& aStart,
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nsACString::const_iterator& aEnd) {
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nsACString::const_iterator end(aEnd);
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return FindInReadable(NS_LITERAL_CSTRING("\r\n"), aStart, end);
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}
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// Reads over a CRLF and positions start after it.
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static bool PushOverLine(nsACString::const_iterator& aStart,
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const nsACString::const_iterator& aEnd) {
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if (*aStart == nsCRT::CR && (aEnd - aStart > 1) && *(++aStart) == nsCRT::LF) {
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++aStart; // advance to after CRLF
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return true;
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}
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return false;
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}
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// static
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bool FetchUtil::ExtractHeader(nsACString::const_iterator& aStart,
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nsACString::const_iterator& aEnd,
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nsCString& aHeaderName, nsCString& aHeaderValue,
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bool* aWasEmptyHeader) {
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MOZ_ASSERT(aWasEmptyHeader);
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// Set it to a valid value here so we don't forget later.
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*aWasEmptyHeader = false;
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const char* beginning = aStart.get();
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nsACString::const_iterator end(aEnd);
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if (!FindCRLF(aStart, end)) {
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return false;
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}
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if (aStart.get() == beginning) {
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*aWasEmptyHeader = true;
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return true;
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}
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nsAutoCString header(beginning, aStart.get() - beginning);
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nsACString::const_iterator headerStart, iter, headerEnd;
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header.BeginReading(headerStart);
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header.EndReading(headerEnd);
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iter = headerStart;
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if (!FindCharInReadable(':', iter, headerEnd)) {
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return false;
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}
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aHeaderName.Assign(StringHead(header, iter - headerStart));
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aHeaderName.CompressWhitespace();
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if (!NS_IsValidHTTPToken(aHeaderName)) {
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return false;
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}
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aHeaderValue.Assign(Substring(++iter, headerEnd));
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if (!NS_IsReasonableHTTPHeaderValue(aHeaderValue)) {
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return false;
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}
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aHeaderValue.CompressWhitespace();
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return PushOverLine(aStart, aEnd);
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}
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// static
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nsresult FetchUtil::SetRequestReferrer(nsIPrincipal* aPrincipal, Document* aDoc,
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nsIHttpChannel* aChannel,
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InternalRequest* aRequest) {
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MOZ_ASSERT(NS_IsMainThread());
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nsresult rv = NS_OK;
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nsAutoString referrer;
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aRequest->GetReferrer(referrer);
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ReferrerPolicy policy = aRequest->ReferrerPolicy_();
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nsCOMPtr<nsIReferrerInfo> referrerInfo;
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if (referrer.IsEmpty()) {
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// This is the case request’s referrer is "no-referrer"
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referrerInfo = new ReferrerInfo(nullptr, ReferrerPolicy::No_referrer);
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} else if (referrer.EqualsLiteral(kFETCH_CLIENT_REFERRER_STR)) {
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referrerInfo = ReferrerInfo::CreateForFetch(aPrincipal, aDoc);
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// In the first step, we should use referrer info from requetInit
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referrerInfo = static_cast<ReferrerInfo*>(referrerInfo.get())
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->CloneWithNewPolicy(policy);
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} else {
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// From "Determine request's Referrer" step 3
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// "If request's referrer is a URL, let referrerSource be request's
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// referrer."
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nsCOMPtr<nsIURI> referrerURI;
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rv = NS_NewURI(getter_AddRefs(referrerURI), referrer);
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NS_ENSURE_SUCCESS(rv, rv);
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referrerInfo = new ReferrerInfo(referrerURI, policy);
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}
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rv = aChannel->SetReferrerInfoWithoutClone(referrerInfo);
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoString computedReferrerSpec;
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referrerInfo = aChannel->GetReferrerInfo();
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if (referrerInfo) {
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Unused << referrerInfo->GetComputedReferrerSpec(computedReferrerSpec);
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}
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// Step 8 https://fetch.spec.whatwg.org/#main-fetch
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// If request’s referrer is not "no-referrer", set request’s referrer to
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// the result of invoking determine request’s referrer.
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aRequest->SetReferrer(computedReferrerSpec);
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return NS_OK;
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}
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class WindowStreamOwner final : public nsIObserver,
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public nsSupportsWeakReference {
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// Read from any thread but only set/cleared on the main thread. The lifecycle
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// of WindowStreamOwner prevents concurrent read/clear.
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nsCOMPtr<nsIAsyncInputStream> mStream;
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nsCOMPtr<nsIGlobalObject> mGlobal;
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~WindowStreamOwner() {
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MOZ_ASSERT(NS_IsMainThread());
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->RemoveObserver(this, DOM_WINDOW_DESTROYED_TOPIC);
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}
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}
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public:
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NS_DECL_ISUPPORTS
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WindowStreamOwner(nsIAsyncInputStream* aStream, nsIGlobalObject* aGlobal)
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: mStream(aStream), mGlobal(aGlobal) {
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MOZ_DIAGNOSTIC_ASSERT(mGlobal);
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MOZ_ASSERT(NS_IsMainThread());
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}
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static already_AddRefed<WindowStreamOwner> Create(
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nsIAsyncInputStream* aStream, nsIGlobalObject* aGlobal) {
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nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
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if (NS_WARN_IF(!os)) {
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return nullptr;
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}
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RefPtr<WindowStreamOwner> self = new WindowStreamOwner(aStream, aGlobal);
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// Holds nsIWeakReference to self.
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nsresult rv = os->AddObserver(self, DOM_WINDOW_DESTROYED_TOPIC, true);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return nullptr;
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}
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return self.forget();
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}
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struct Destroyer final : Runnable {
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RefPtr<WindowStreamOwner> mDoomed;
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explicit Destroyer(already_AddRefed<WindowStreamOwner> aDoomed)
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: Runnable("WindowStreamOwner::Destroyer"), mDoomed(aDoomed) {}
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NS_IMETHOD
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Run() override {
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mDoomed = nullptr;
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return NS_OK;
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}
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};
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// nsIObserver:
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NS_IMETHOD
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Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) override {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_DIAGNOSTIC_ASSERT(strcmp(aTopic, DOM_WINDOW_DESTROYED_TOPIC) == 0);
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if (!mStream) {
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return NS_OK;
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}
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nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(mGlobal);
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if (!SameCOMIdentity(aSubject, window)) {
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return NS_OK;
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}
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// mStream->Close() will call JSStreamConsumer::OnInputStreamReady which may
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// then destory itself, dropping the last reference to 'this'.
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RefPtr<WindowStreamOwner> keepAlive(this);
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mStream->Close();
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mStream = nullptr;
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mGlobal = nullptr;
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return NS_OK;
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}
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};
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NS_IMPL_ISUPPORTS(WindowStreamOwner, nsIObserver, nsISupportsWeakReference)
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class WorkerStreamOwner final {
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public:
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NS_INLINE_DECL_REFCOUNTING(WorkerStreamOwner)
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explicit WorkerStreamOwner(nsIAsyncInputStream* aStream) : mStream(aStream) {}
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static already_AddRefed<WorkerStreamOwner> Create(
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nsIAsyncInputStream* aStream, WorkerPrivate* aWorker) {
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RefPtr<WorkerStreamOwner> self = new WorkerStreamOwner(aStream);
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self->mWorkerRef = WeakWorkerRef::Create(aWorker, [self]() {
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if (self->mStream) {
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// If this Close() calls JSStreamConsumer::OnInputStreamReady and drops
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// the last reference to the JSStreamConsumer, 'this' will not be
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// destroyed since ~JSStreamConsumer() only enqueues a Destroyer.
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self->mStream->Close();
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self->mStream = nullptr;
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self->mWorkerRef = nullptr;
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}
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});
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if (!self->mWorkerRef) {
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return nullptr;
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}
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return self.forget();
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}
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struct Destroyer final : CancelableRunnable {
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RefPtr<WorkerStreamOwner> mDoomed;
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explicit Destroyer(already_AddRefed<WorkerStreamOwner>&& aDoomed)
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: CancelableRunnable("WorkerStreamOwner::Destroyer"),
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mDoomed(std::move(aDoomed)) {}
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NS_IMETHOD
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Run() override {
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mDoomed = nullptr;
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return NS_OK;
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}
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nsresult Cancel() override { return Run(); }
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};
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private:
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~WorkerStreamOwner() = default;
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// Read from any thread but only set/cleared on the worker thread. The
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// lifecycle of WorkerStreamOwner prevents concurrent read/clear.
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nsCOMPtr<nsIAsyncInputStream> mStream;
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RefPtr<WeakWorkerRef> mWorkerRef;
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};
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class JSStreamConsumer final : public nsIInputStreamCallback {
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nsCOMPtr<nsIEventTarget> mOwningEventTarget;
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RefPtr<WindowStreamOwner> mWindowStreamOwner;
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RefPtr<WorkerStreamOwner> mWorkerStreamOwner;
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JS::StreamConsumer* mConsumer;
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bool mConsumerAborted;
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JSStreamConsumer(already_AddRefed<WindowStreamOwner> aWindowStreamOwner,
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nsIGlobalObject* aGlobal, JS::StreamConsumer* aConsumer)
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: mOwningEventTarget(aGlobal->EventTargetFor(TaskCategory::Other)),
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mWindowStreamOwner(aWindowStreamOwner),
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mConsumer(aConsumer),
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mConsumerAborted(false) {
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MOZ_DIAGNOSTIC_ASSERT(mWindowStreamOwner);
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MOZ_DIAGNOSTIC_ASSERT(mConsumer);
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}
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JSStreamConsumer(RefPtr<WorkerStreamOwner> aWorkerStreamOwner,
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nsIGlobalObject* aGlobal, JS::StreamConsumer* aConsumer)
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: mOwningEventTarget(aGlobal->EventTargetFor(TaskCategory::Other)),
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mWorkerStreamOwner(std::move(aWorkerStreamOwner)),
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mConsumer(aConsumer),
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mConsumerAborted(false) {
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MOZ_DIAGNOSTIC_ASSERT(mWorkerStreamOwner);
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MOZ_DIAGNOSTIC_ASSERT(mConsumer);
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}
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~JSStreamConsumer() {
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// Both WindowStreamOwner and WorkerStreamOwner need to be destroyed on
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// their global's event target thread.
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RefPtr<Runnable> destroyer;
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if (mWindowStreamOwner) {
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MOZ_DIAGNOSTIC_ASSERT(!mWorkerStreamOwner);
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destroyer = new WindowStreamOwner::Destroyer(mWindowStreamOwner.forget());
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} else {
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MOZ_DIAGNOSTIC_ASSERT(mWorkerStreamOwner);
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destroyer = new WorkerStreamOwner::Destroyer(mWorkerStreamOwner.forget());
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}
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MOZ_ALWAYS_SUCCEEDS(mOwningEventTarget->Dispatch(destroyer.forget()));
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}
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static nsresult WriteSegment(nsIInputStream* aStream, void* aClosure,
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const char* aFromSegment, uint32_t aToOffset,
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uint32_t aCount, uint32_t* aWriteCount) {
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JSStreamConsumer* self = reinterpret_cast<JSStreamConsumer*>(aClosure);
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MOZ_DIAGNOSTIC_ASSERT(!self->mConsumerAborted);
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// This callback can be called on any thread which is explicitly allowed by
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// this particular JS API call.
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if (!self->mConsumer->consumeChunk((const uint8_t*)aFromSegment, aCount)) {
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self->mConsumerAborted = true;
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return NS_ERROR_UNEXPECTED;
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}
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*aWriteCount = aCount;
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return NS_OK;
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}
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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static bool Start(nsCOMPtr<nsIInputStream>&& aStream,
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JS::StreamConsumer* aConsumer, nsIGlobalObject* aGlobal,
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WorkerPrivate* aMaybeWorker) {
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nsCOMPtr<nsIAsyncInputStream> asyncStream;
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nsresult rv = NS_MakeAsyncNonBlockingInputStream(
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aStream.forget(), getter_AddRefs(asyncStream));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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RefPtr<JSStreamConsumer> consumer;
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if (aMaybeWorker) {
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RefPtr<WorkerStreamOwner> owner =
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WorkerStreamOwner::Create(asyncStream, aMaybeWorker);
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if (!owner) {
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return false;
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}
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consumer = new JSStreamConsumer(std::move(owner), aGlobal, aConsumer);
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} else {
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RefPtr<WindowStreamOwner> owner =
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WindowStreamOwner::Create(asyncStream, aGlobal);
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if (!owner) {
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return false;
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}
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consumer = new JSStreamConsumer(owner.forget(), aGlobal, aConsumer);
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}
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// This AsyncWait() creates a ref-cycle between asyncStream and consumer:
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//
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// asyncStream -> consumer -> (Window|Worker)StreamOwner -> asyncStream
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//
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// The cycle is broken when the stream completes or errors out and
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// asyncStream drops its reference to consumer.
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return NS_SUCCEEDED(asyncStream->AsyncWait(consumer, 0, 0, nullptr));
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}
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// nsIInputStreamCallback:
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NS_IMETHOD
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OnInputStreamReady(nsIAsyncInputStream* aStream) override {
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// Can be called on any stream. The JS API calls made below explicitly
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// support being called from any thread.
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MOZ_DIAGNOSTIC_ASSERT(!mConsumerAborted);
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nsresult rv;
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uint64_t available = 0;
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rv = aStream->Available(&available);
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if (NS_SUCCEEDED(rv) && available == 0) {
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rv = NS_BASE_STREAM_CLOSED;
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}
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if (rv == NS_BASE_STREAM_CLOSED) {
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mConsumer->streamEnd();
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return NS_OK;
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}
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if (NS_FAILED(rv)) {
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mConsumer->streamError(size_t(rv));
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return NS_OK;
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}
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// Check mConsumerAborted before NS_FAILED to avoid calling streamError()
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// if consumeChunk() returned false per JS API contract.
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uint32_t written = 0;
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rv = aStream->ReadSegments(WriteSegment, this, available, &written);
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if (mConsumerAborted) {
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return NS_OK;
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}
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mConsumer->streamError(size_t(rv));
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return NS_OK;
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}
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rv = aStream->AsyncWait(this, 0, 0, nullptr);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mConsumer->streamError(size_t(rv));
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return NS_OK;
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}
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return NS_OK;
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}
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};
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NS_IMPL_ISUPPORTS(JSStreamConsumer, nsIInputStreamCallback)
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static bool ThrowException(JSContext* aCx, unsigned errorNumber) {
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JS_ReportErrorNumberASCII(aCx, js::GetErrorMessage, nullptr, errorNumber);
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return false;
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}
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// static
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bool FetchUtil::StreamResponseToJS(JSContext* aCx, JS::HandleObject aObj,
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JS::MimeType aMimeType,
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JS::StreamConsumer* aConsumer,
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WorkerPrivate* aMaybeWorker) {
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MOZ_ASSERT(!aMaybeWorker == NS_IsMainThread());
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RefPtr<Response> response;
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nsresult rv = UNWRAP_OBJECT(Response, aObj, response);
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if (NS_FAILED(rv)) {
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return ThrowException(aCx, JSMSG_BAD_RESPONSE_VALUE);
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}
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const char* requiredMimeType = nullptr;
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switch (aMimeType) {
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case JS::MimeType::Wasm:
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requiredMimeType = WASM_CONTENT_TYPE;
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break;
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}
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if (strcmp(requiredMimeType, response->MimeType().Data())) {
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return ThrowException(aCx, JSMSG_BAD_RESPONSE_MIME_TYPE);
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}
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if (response->Type() != ResponseType::Basic &&
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response->Type() != ResponseType::Cors &&
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response->Type() != ResponseType::Default) {
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return ThrowException(aCx, JSMSG_BAD_RESPONSE_CORS_SAME_ORIGIN);
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}
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if (!response->Ok()) {
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return ThrowException(aCx, JSMSG_BAD_RESPONSE_STATUS);
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}
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IgnoredErrorResult result;
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bool used = response->GetBodyUsed(result);
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if (NS_WARN_IF(result.Failed())) {
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return ThrowException(aCx, JSMSG_ERROR_CONSUMING_RESPONSE);
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}
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if (used) {
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return ThrowException(aCx, JSMSG_RESPONSE_ALREADY_CONSUMED);
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}
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switch (aMimeType) {
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case JS::MimeType::Wasm:
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nsAutoString url;
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response->GetUrl(url);
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nsCString sourceMapUrl;
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response->GetInternalHeaders()->Get(NS_LITERAL_CSTRING("SourceMap"),
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sourceMapUrl, result);
|
||
if (NS_WARN_IF(result.Failed())) {
|
||
return ThrowException(aCx, JSMSG_ERROR_CONSUMING_RESPONSE);
|
||
}
|
||
NS_ConvertUTF16toUTF8 urlUTF8(url);
|
||
aConsumer->noteResponseURLs(
|
||
urlUTF8.get(), sourceMapUrl.IsVoid() ? nullptr : sourceMapUrl.get());
|
||
break;
|
||
}
|
||
|
||
RefPtr<InternalResponse> ir = response->GetInternalResponse();
|
||
if (NS_WARN_IF(!ir)) {
|
||
return ThrowException(aCx, JSMSG_OUT_OF_MEMORY);
|
||
}
|
||
|
||
nsCOMPtr<nsIInputStream> body;
|
||
ir->GetUnfilteredBody(getter_AddRefs(body));
|
||
if (!body) {
|
||
aConsumer->streamEnd();
|
||
return true;
|
||
}
|
||
|
||
IgnoredErrorResult error;
|
||
response->SetBodyUsed(aCx, error);
|
||
if (NS_WARN_IF(error.Failed())) {
|
||
return ThrowException(aCx, JSMSG_ERROR_CONSUMING_RESPONSE);
|
||
}
|
||
|
||
nsIGlobalObject* global = xpc::NativeGlobal(js::UncheckedUnwrap(aObj));
|
||
|
||
if (!JSStreamConsumer::Start(std::move(body), aConsumer, global,
|
||
aMaybeWorker)) {
|
||
return ThrowException(aCx, JSMSG_OUT_OF_MEMORY);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// static
|
||
void FetchUtil::ReportJSStreamError(JSContext* aCx, size_t aErrorCode) {
|
||
// For now, convert *all* errors into AbortError.
|
||
|
||
RefPtr<DOMException> e = DOMException::Create(NS_ERROR_DOM_ABORT_ERR);
|
||
|
||
JS::Rooted<JS::Value> value(aCx);
|
||
if (!GetOrCreateDOMReflector(aCx, e, &value)) {
|
||
return;
|
||
}
|
||
|
||
JS_SetPendingException(aCx, value);
|
||
}
|
||
|
||
} // namespace dom
|
||
} // namespace mozilla
|