зеркало из https://github.com/mozilla/gecko-dev.git
435 строки
13 KiB
C++
435 строки
13 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 "Response.h"
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#include "nsISupportsImpl.h"
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#include "nsIURI.h"
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#include "nsNetUtil.h"
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#include "nsPIDOMWindow.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/dom/FetchBinding.h"
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#include "mozilla/dom/ResponseBinding.h"
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#include "mozilla/dom/Headers.h"
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#include "mozilla/dom/Promise.h"
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#include "mozilla/dom/URL.h"
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#include "nsDOMString.h"
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#include "BodyExtractor.h"
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#include "FetchStream.h"
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#include "FetchStreamReader.h"
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#include "InternalResponse.h"
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#include "WorkerPrivate.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTING_ADDREF(Response)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(Response)
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NS_IMPL_CYCLE_COLLECTION_CLASS(Response)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Response)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mOwner)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mHeaders)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mSignal)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mFetchStreamReader)
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tmp->mReadableStreamBody = nullptr;
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tmp->mReadableStreamReader = nullptr;
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Response)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mHeaders)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSignal)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFetchStreamReader)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Response)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mReadableStreamBody)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mReadableStreamReader)
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Response)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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Response::Response(nsIGlobalObject* aGlobal,
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InternalResponse* aInternalResponse,
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AbortSignal* aSignal)
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: FetchBody<Response>(aGlobal)
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, mInternalResponse(aInternalResponse)
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, mSignal(aSignal)
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{
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MOZ_ASSERT(aInternalResponse->Headers()->Guard() == HeadersGuardEnum::Immutable ||
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aInternalResponse->Headers()->Guard() == HeadersGuardEnum::Response);
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SetMimeType();
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mozilla::HoldJSObjects(this);
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}
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Response::~Response()
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{
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mozilla::DropJSObjects(this);
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}
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/* static */ already_AddRefed<Response>
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Response::Error(const GlobalObject& aGlobal)
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{
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
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RefPtr<InternalResponse> error = InternalResponse::NetworkError(NS_ERROR_FAILURE);
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RefPtr<Response> r = new Response(global, error, nullptr);
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return r.forget();
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}
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/* static */ already_AddRefed<Response>
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Response::Redirect(const GlobalObject& aGlobal, const nsAString& aUrl,
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uint16_t aStatus, ErrorResult& aRv)
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{
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nsAutoString parsedURL;
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if (NS_IsMainThread()) {
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nsCOMPtr<nsIURI> baseURI;
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nsCOMPtr<nsPIDOMWindowInner> inner(do_QueryInterface(aGlobal.GetAsSupports()));
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nsIDocument* doc = inner ? inner->GetExtantDoc() : nullptr;
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if (doc) {
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baseURI = doc->GetBaseURI();
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}
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nsCOMPtr<nsIURI> resolvedURI;
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aRv = NS_NewURI(getter_AddRefs(resolvedURI), aUrl, nullptr, baseURI);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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nsAutoCString spec;
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aRv = resolvedURI->GetSpec(spec);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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CopyUTF8toUTF16(spec, parsedURL);
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} else {
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workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate();
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MOZ_ASSERT(worker);
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worker->AssertIsOnWorkerThread();
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NS_ConvertUTF8toUTF16 baseURL(worker->GetLocationInfo().mHref);
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RefPtr<URL> url = URL::WorkerConstructor(aGlobal, aUrl, baseURL, aRv);
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if (aRv.Failed()) {
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return nullptr;
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}
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url->Stringify(parsedURL, aRv);
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}
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if (aRv.Failed()) {
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return nullptr;
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}
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if (aStatus != 301 && aStatus != 302 && aStatus != 303 && aStatus != 307 && aStatus != 308) {
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aRv.ThrowRangeError<MSG_INVALID_REDIRECT_STATUSCODE_ERROR>();
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return nullptr;
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}
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Optional<Nullable<fetch::ResponseBodyInit>> body;
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ResponseInit init;
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init.mStatus = aStatus;
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RefPtr<Response> r = Response::Constructor(aGlobal, body, init, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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r->GetInternalHeaders()->Set(NS_LITERAL_CSTRING("Location"),
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NS_ConvertUTF16toUTF8(parsedURL), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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r->GetInternalHeaders()->SetGuard(HeadersGuardEnum::Immutable, aRv);
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MOZ_ASSERT(!aRv.Failed());
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return r.forget();
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}
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/*static*/ already_AddRefed<Response>
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Response::Constructor(const GlobalObject& aGlobal,
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const Optional<Nullable<fetch::ResponseBodyInit>>& aBody,
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const ResponseInit& aInit, ErrorResult& aRv)
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{
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
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if (aInit.mStatus < 200 || aInit.mStatus > 599) {
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aRv.ThrowRangeError<MSG_INVALID_RESPONSE_STATUSCODE_ERROR>();
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return nullptr;
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}
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// Check if the status text contains illegal characters
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nsACString::const_iterator start, end;
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aInit.mStatusText.BeginReading(start);
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aInit.mStatusText.EndReading(end);
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if (FindCharInReadable('\r', start, end)) {
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aRv.ThrowTypeError<MSG_RESPONSE_INVALID_STATUSTEXT_ERROR>();
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return nullptr;
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}
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// Reset iterator since FindCharInReadable advances it.
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aInit.mStatusText.BeginReading(start);
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if (FindCharInReadable('\n', start, end)) {
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aRv.ThrowTypeError<MSG_RESPONSE_INVALID_STATUSTEXT_ERROR>();
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return nullptr;
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}
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RefPtr<InternalResponse> internalResponse =
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new InternalResponse(aInit.mStatus, aInit.mStatusText);
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// Grab a valid channel info from the global so this response is 'valid' for
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// interception.
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if (NS_IsMainThread()) {
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ChannelInfo info;
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nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(global);
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if (window) {
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nsIDocument* doc = window->GetExtantDoc();
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MOZ_ASSERT(doc);
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info.InitFromDocument(doc);
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} else {
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info.InitFromChromeGlobal(global);
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}
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internalResponse->InitChannelInfo(info);
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} else {
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workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate();
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MOZ_ASSERT(worker);
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internalResponse->InitChannelInfo(worker->GetChannelInfo());
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}
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RefPtr<Response> r = new Response(global, internalResponse, nullptr);
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if (aInit.mHeaders.WasPassed()) {
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internalResponse->Headers()->Clear();
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// Instead of using Fill, create an object to allow the constructor to
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// unwrap the HeadersInit.
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RefPtr<Headers> headers =
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Headers::Create(global, aInit.mHeaders.Value(), aRv);
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if (aRv.Failed()) {
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return nullptr;
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}
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internalResponse->Headers()->Fill(*headers->GetInternalHeaders(), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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}
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if (aBody.WasPassed() && !aBody.Value().IsNull()) {
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if (aInit.mStatus == 204 || aInit.mStatus == 205 || aInit.mStatus == 304) {
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aRv.ThrowTypeError<MSG_RESPONSE_NULL_STATUS_WITH_BODY>();
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return nullptr;
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}
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nsCString contentTypeWithCharset;
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nsCOMPtr<nsIInputStream> bodyStream;
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int64_t bodySize = InternalResponse::UNKNOWN_BODY_SIZE;
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const fetch::ResponseBodyInit& body = aBody.Value().Value();
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if (body.IsReadableStream()) {
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const ReadableStream& readableStream = body.GetAsReadableStream();
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JS::Rooted<JSObject*> readableStreamObj(aGlobal.Context(),
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readableStream.Obj());
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if (JS::ReadableStreamIsDisturbed(readableStreamObj) ||
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JS::ReadableStreamIsLocked(readableStreamObj) ||
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!JS::ReadableStreamIsReadable(readableStreamObj)) {
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aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
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return nullptr;
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}
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r->SetReadableStreamBody(aGlobal.Context(), readableStreamObj);
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if (JS::ReadableStreamGetMode(readableStreamObj) ==
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JS::ReadableStreamMode::ExternalSource) {
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// If this is a DOM generated ReadableStream, we can extract the
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// inputStream directly.
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void* underlyingSource = nullptr;
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if (!JS::ReadableStreamGetExternalUnderlyingSource(aGlobal.Context(),
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readableStreamObj,
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&underlyingSource)) {
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aRv.StealExceptionFromJSContext(aGlobal.Context());
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return nullptr;
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}
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MOZ_ASSERT(underlyingSource);
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aRv = FetchStream::RetrieveInputStream(underlyingSource,
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getter_AddRefs(bodyStream));
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// The releasing of the external source is needed in order to avoid an
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// extra stream lock.
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JS::ReadableStreamReleaseExternalUnderlyingSource(readableStreamObj);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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} else {
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// If this is a JS-created ReadableStream, let's create a
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// FetchStreamReader.
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aRv = FetchStreamReader::Create(aGlobal.Context(), global,
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getter_AddRefs(r->mFetchStreamReader),
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getter_AddRefs(bodyStream));
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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}
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} else {
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uint64_t size = 0;
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aRv = ExtractByteStreamFromBody(body,
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getter_AddRefs(bodyStream),
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contentTypeWithCharset,
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size);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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bodySize = size;
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}
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internalResponse->SetBody(bodyStream, bodySize);
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if (!contentTypeWithCharset.IsVoid() &&
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!internalResponse->Headers()->Has(NS_LITERAL_CSTRING("Content-Type"),
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aRv)) {
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// Ignore Append() failing here.
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ErrorResult error;
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internalResponse->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"),
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contentTypeWithCharset, error);
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error.SuppressException();
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}
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if (aRv.Failed()) {
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return nullptr;
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}
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}
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r->SetMimeType();
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return r.forget();
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}
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already_AddRefed<Response>
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Response::Clone(JSContext* aCx, ErrorResult& aRv)
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{
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if (BodyUsed()) {
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aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
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return nullptr;
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}
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RefPtr<FetchStreamReader> streamReader;
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nsCOMPtr<nsIInputStream> inputStream;
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JS::Rooted<JSObject*> body(aCx);
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MaybeTeeReadableStreamBody(aCx, &body,
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getter_AddRefs(streamReader),
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getter_AddRefs(inputStream), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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MOZ_ASSERT_IF(body, streamReader);
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MOZ_ASSERT_IF(body, inputStream);
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RefPtr<InternalResponse> ir =
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mInternalResponse->Clone(body
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? InternalResponse::eDontCloneInputStream
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: InternalResponse::eCloneInputStream);
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RefPtr<Response> response = new Response(mOwner, ir, mSignal);
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if (body) {
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// Maybe we have a body, but we receive null from MaybeTeeReadableStreamBody
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// if this body is a native stream. In this case the InternalResponse will
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// have a clone of the native body and the ReadableStream will be created
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// lazily if needed.
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response->SetReadableStreamBody(aCx, body);
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response->mFetchStreamReader = streamReader;
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ir->SetBody(inputStream, InternalResponse::UNKNOWN_BODY_SIZE);
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}
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return response.forget();
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}
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already_AddRefed<Response>
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Response::CloneUnfiltered(JSContext* aCx, ErrorResult& aRv)
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{
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if (BodyUsed()) {
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aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
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return nullptr;
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}
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RefPtr<FetchStreamReader> streamReader;
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nsCOMPtr<nsIInputStream> inputStream;
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JS::Rooted<JSObject*> body(aCx);
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MaybeTeeReadableStreamBody(aCx, &body,
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getter_AddRefs(streamReader),
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getter_AddRefs(inputStream), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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MOZ_ASSERT_IF(body, streamReader);
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MOZ_ASSERT_IF(body, inputStream);
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RefPtr<InternalResponse> clone =
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mInternalResponse->Clone(body
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? InternalResponse::eDontCloneInputStream
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: InternalResponse::eCloneInputStream);
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RefPtr<InternalResponse> ir = clone->Unfiltered();
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RefPtr<Response> ref = new Response(mOwner, ir, mSignal);
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if (body) {
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// Maybe we have a body, but we receive null from MaybeTeeReadableStreamBody
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// if this body is a native stream. In this case the InternalResponse will
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// have a clone of the native body and the ReadableStream will be created
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// lazily if needed.
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ref->SetReadableStreamBody(aCx, body);
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ref->mFetchStreamReader = streamReader;
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ir->SetBody(inputStream, InternalResponse::UNKNOWN_BODY_SIZE);
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}
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return ref.forget();
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}
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void
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Response::SetBody(nsIInputStream* aBody, int64_t aBodySize)
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{
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MOZ_ASSERT(!BodyUsed());
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mInternalResponse->SetBody(aBody, aBodySize);
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}
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already_AddRefed<InternalResponse>
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Response::GetInternalResponse() const
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{
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RefPtr<InternalResponse> ref = mInternalResponse;
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return ref.forget();
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}
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Headers*
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Response::Headers_()
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{
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if (!mHeaders) {
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mHeaders = new Headers(mOwner, mInternalResponse->Headers());
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}
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return mHeaders;
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}
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} // namespace dom
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} // namespace mozilla
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