зеркало из https://github.com/mozilla/gecko-dev.git
499 строки
16 KiB
C++
499 строки
16 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/BasePrincipal.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/HoldDropJSObjects.h"
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#include "mozilla/dom/BodyStream.h"
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#include "mozilla/dom/Document.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 "mozilla/dom/WorkerPrivate.h"
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#include "nsDOMString.h"
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#include "BodyExtractor.h"
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#include "FetchStreamReader.h"
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#include "InternalResponse.h"
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namespace mozilla::dom {
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NS_IMPL_ADDREF_INHERITED(Response, FetchBody<Response>)
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NS_IMPL_RELEASE_INHERITED(Response, FetchBody<Response>)
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NS_IMPL_CYCLE_COLLECTION_CLASS(Response)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(Response, FetchBody<Response>)
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AbortFollower::Unlink(static_cast<AbortFollower*>(tmp));
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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(mSignalImpl)
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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_INHERITED(Response, FetchBody<Response>)
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AbortFollower::Traverse(static_cast<AbortFollower*>(tmp), cb);
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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(mSignalImpl)
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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_INHERITED(Response, FetchBody<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_END_INHERITING(FetchBody<Response>)
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Response::Response(nsIGlobalObject* aGlobal,
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InternalResponse* aInternalResponse,
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AbortSignalImpl* aSignalImpl)
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: FetchBody<Response>(aGlobal),
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mInternalResponse(aInternalResponse),
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mSignalImpl(aSignalImpl) {
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MOZ_ASSERT(
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aInternalResponse->Headers()->Guard() == HeadersGuardEnum::Immutable ||
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aInternalResponse->Headers()->Guard() == HeadersGuardEnum::Response);
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mozilla::HoldJSObjects(this);
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}
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Response::~Response() { mozilla::DropJSObjects(this); }
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/* static */
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already_AddRefed<Response> Response::Error(const GlobalObject& aGlobal) {
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
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RefPtr<InternalResponse> error =
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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 */
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already_AddRefed<Response> Response::Redirect(const GlobalObject& aGlobal,
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const nsAString& aUrl,
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uint16_t aStatus,
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ErrorResult& aRv) {
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nsAutoString parsedURL;
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if (NS_IsMainThread()) {
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nsIURI* baseURI = nullptr;
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nsCOMPtr<nsPIDOMWindowInner> inner(
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do_QueryInterface(aGlobal.GetAsSupports()));
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Document* 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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// Don't use NS_ConvertUTF16toUTF8 because that doesn't let us handle OOM.
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nsAutoCString url;
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if (!AppendUTF16toUTF8(aUrl, url, fallible)) {
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aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
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return nullptr;
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}
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nsCOMPtr<nsIURI> resolvedURI;
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nsresult rv = NS_NewURI(getter_AddRefs(resolvedURI), url, nullptr, baseURI);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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aRv.ThrowTypeError<MSG_INVALID_URL>(url);
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return nullptr;
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}
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nsAutoCString spec;
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rv = resolvedURI->GetSpec(spec);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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aRv.ThrowTypeError<MSG_INVALID_URL>(url);
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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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WorkerPrivate* worker = 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 =
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URL::Constructor(aGlobal.GetAsSupports(), 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->GetHref(parsedURL);
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}
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if (aStatus != 301 && aStatus != 302 && aStatus != 303 && aStatus != 307 &&
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aStatus != 308) {
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aRv.ThrowRangeError("Invalid redirect status code.");
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return nullptr;
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}
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// We can't just pass nullptr for our null-valued Nullable, because the
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// fetch::ResponseBodyInit is a non-temporary type due to the MOZ_RAII
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// annotations on some of its members.
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Nullable<fetch::ResponseBodyInit> body;
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ResponseInit init;
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init.mStatus = aStatus;
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init.mStatusText.AssignASCII("");
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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("Location"_ns, NS_ConvertUTF16toUTF8(parsedURL),
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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*/
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already_AddRefed<Response> Response::Constructor(
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const GlobalObject& aGlobal, const Nullable<fetch::ResponseBodyInit>& aBody,
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const ResponseInit& aInit, ErrorResult& aRv) {
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
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if (NS_WARN_IF(!global)) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return nullptr;
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}
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if (aInit.mStatus < 200 || aInit.mStatus > 599) {
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aRv.ThrowRangeError("Invalid response status code.");
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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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UniquePtr<mozilla::ipc::PrincipalInfo> principalInfo;
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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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Document* doc = window->GetExtantDoc();
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MOZ_ASSERT(doc);
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info.InitFromDocument(doc);
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principalInfo.reset(new mozilla::ipc::PrincipalInfo());
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nsresult rv =
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PrincipalToPrincipalInfo(doc->NodePrincipal(), principalInfo.get());
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if (NS_WARN_IF(NS_FAILED(rv))) {
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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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internalResponse->InitChannelInfo(info);
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} else if (global->PrincipalOrNull()->IsSystemPrincipal()) {
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info.InitFromChromeGlobal(global);
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internalResponse->InitChannelInfo(info);
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}
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/**
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* The channel info is left uninitialized if neither the above `if` nor
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* `else if` statements are executed; this could be because we're in a
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* WebExtensions content script, where the global (i.e. `global`) is a
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* wrapper, and the principal is an expanded principal. In this case,
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* as far as I can tell, there's no way to get the security info, but we'd
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* like the `Response` to be successfully constructed.
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*/
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} else {
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WorkerPrivate* worker = GetCurrentThreadWorkerPrivate();
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MOZ_ASSERT(worker);
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internalResponse->InitChannelInfo(worker->GetChannelInfo());
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principalInfo =
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MakeUnique<mozilla::ipc::PrincipalInfo>(worker->GetPrincipalInfo());
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}
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internalResponse->SetPrincipalInfo(std::move(principalInfo));
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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.IsNull()) {
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if (aInit.mStatus == 204 || aInit.mStatus == 205 || aInit.mStatus == 304) {
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aRv.ThrowTypeError("Response body is given with a null body status.");
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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();
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if (body.IsReadableStream()) {
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aRv.MightThrowJSException();
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JSContext* cx = aGlobal.Context();
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const ReadableStream& readableStream = body.GetAsReadableStream();
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JS::Rooted<JSObject*> readableStreamObj(cx, readableStream.Obj());
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bool disturbed;
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bool locked;
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if (!JS::ReadableStreamIsDisturbed(cx, readableStreamObj, &disturbed) ||
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!JS::ReadableStreamIsLocked(cx, readableStreamObj, &locked)) {
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aRv.StealExceptionFromJSContext(cx);
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return nullptr;
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}
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if (disturbed || locked) {
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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(cx, readableStreamObj);
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JS::ReadableStreamMode streamMode;
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if (!JS::ReadableStreamGetMode(cx, readableStreamObj, &streamMode)) {
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aRv.StealExceptionFromJSContext(cx);
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return nullptr;
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}
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if (streamMode == 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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JS::ReadableStreamUnderlyingSource* underlyingSource = nullptr;
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if (!JS::ReadableStreamGetExternalUnderlyingSource(
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cx, readableStreamObj, &underlyingSource)) {
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aRv.StealExceptionFromJSContext(cx);
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return nullptr;
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}
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MOZ_ASSERT(underlyingSource);
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aRv = BodyStream::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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if (!JS::ReadableStreamReleaseExternalUnderlyingSource(
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cx, readableStreamObj)) {
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aRv.StealExceptionFromJSContext(cx);
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return nullptr;
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}
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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, getter_AddRefs(bodyStream),
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contentTypeWithCharset, 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("Content-Type"_ns, aRv)) {
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// Ignore Append() failing here.
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ErrorResult error;
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internalResponse->Headers()->Append("Content-Type"_ns,
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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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return r.forget();
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}
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already_AddRefed<Response> Response::Clone(JSContext* aCx, ErrorResult& aRv) {
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bool bodyUsed = GetBodyUsed(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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if (!bodyUsed && mReadableStreamBody) {
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aRv.MightThrowJSException();
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AutoJSAPI jsapi;
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if (!jsapi.Init(mOwner)) {
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aRv.Throw(NS_ERROR_FAILURE);
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return nullptr;
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}
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JSContext* cx = jsapi.cx();
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JS::Rooted<JSObject*> body(cx, mReadableStreamBody);
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bool locked;
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// We just need to check the 'locked' state because GetBodyUsed() already
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// checked the 'disturbed' state.
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if (!JS::ReadableStreamIsLocked(cx, body, &locked)) {
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aRv.StealExceptionFromJSContext(cx);
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return nullptr;
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}
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bodyUsed = locked;
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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, 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 ? InternalResponse::eDontCloneInputStream
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: InternalResponse::eCloneInputStream);
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RefPtr<Response> response = new Response(mOwner, ir, GetSignalImpl());
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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> Response::CloneUnfiltered(JSContext* aCx,
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ErrorResult& aRv) {
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if (GetBodyUsed(aRv)) {
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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, 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 ? 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, GetSignalImpl());
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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 Response::SetBody(nsIInputStream* aBody, int64_t aBodySize) {
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MOZ_ASSERT(!CheckBodyUsed());
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mInternalResponse->SetBody(aBody, aBodySize);
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}
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already_AddRefed<InternalResponse> Response::GetInternalResponse() const {
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RefPtr<InternalResponse> ref = mInternalResponse;
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return ref.forget();
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}
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Headers* Response::Headers_() {
|
|
if (!mHeaders) {
|
|
mHeaders = new Headers(mOwner, mInternalResponse->Headers());
|
|
}
|
|
|
|
return mHeaders;
|
|
}
|
|
|
|
} // namespace mozilla::dom
|