Files
tubestation/dom/fetch/Response.cpp
Ben Kelly 79d50a760d Bug 1432272 Make Fetch API use the global's base URL instead of the entry document's base URL. r=bz
The fetch spec used to use the entry settings as the base for parsing relative
Request/Response URL's, but this is no longer the case.  This was changed in:

https://github.com/whatwg/fetch/issues/367

Update our code to match this behavior.  We basically convert GetEntryDocument()
to QI the global to nsGlobalWindowInner and use its ExtantDoc instead.

No changes are needed for workers since its not possible to perform cross-global
javascript access in worker threads.
2018-01-23 09:38:21 -05:00

435 lines
13 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Response.h"
#include "nsISupportsImpl.h"
#include "nsIURI.h"
#include "nsNetUtil.h"
#include "nsPIDOMWindow.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/FetchBinding.h"
#include "mozilla/dom/ResponseBinding.h"
#include "mozilla/dom/Headers.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/URL.h"
#include "nsDOMString.h"
#include "BodyExtractor.h"
#include "FetchStream.h"
#include "FetchStreamReader.h"
#include "InternalResponse.h"
#include "WorkerPrivate.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTING_ADDREF(Response)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Response)
NS_IMPL_CYCLE_COLLECTION_CLASS(Response)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Response)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mOwner)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mHeaders)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSignal)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFetchStreamReader)
tmp->mReadableStreamBody = nullptr;
tmp->mReadableStreamReader = nullptr;
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Response)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mHeaders)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSignal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFetchStreamReader)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Response)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mReadableStreamBody)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mReadableStreamReader)
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Response)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
Response::Response(nsIGlobalObject* aGlobal,
InternalResponse* aInternalResponse,
AbortSignal* aSignal)
: FetchBody<Response>(aGlobal)
, mInternalResponse(aInternalResponse)
, mSignal(aSignal)
{
MOZ_ASSERT(aInternalResponse->Headers()->Guard() == HeadersGuardEnum::Immutable ||
aInternalResponse->Headers()->Guard() == HeadersGuardEnum::Response);
SetMimeType();
mozilla::HoldJSObjects(this);
}
Response::~Response()
{
mozilla::DropJSObjects(this);
}
/* static */ already_AddRefed<Response>
Response::Error(const GlobalObject& aGlobal)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
RefPtr<InternalResponse> error = InternalResponse::NetworkError(NS_ERROR_FAILURE);
RefPtr<Response> r = new Response(global, error, nullptr);
return r.forget();
}
/* static */ already_AddRefed<Response>
Response::Redirect(const GlobalObject& aGlobal, const nsAString& aUrl,
uint16_t aStatus, ErrorResult& aRv)
{
nsAutoString parsedURL;
if (NS_IsMainThread()) {
nsCOMPtr<nsIURI> baseURI;
nsCOMPtr<nsPIDOMWindowInner> inner(do_QueryInterface(aGlobal.GetAsSupports()));
nsIDocument* doc = inner ? inner->GetExtantDoc() : nullptr;
if (doc) {
baseURI = doc->GetBaseURI();
}
nsCOMPtr<nsIURI> resolvedURI;
aRv = NS_NewURI(getter_AddRefs(resolvedURI), aUrl, nullptr, baseURI);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsAutoCString spec;
aRv = resolvedURI->GetSpec(spec);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
CopyUTF8toUTF16(spec, parsedURL);
} else {
workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate();
MOZ_ASSERT(worker);
worker->AssertIsOnWorkerThread();
NS_ConvertUTF8toUTF16 baseURL(worker->GetLocationInfo().mHref);
RefPtr<URL> url = URL::WorkerConstructor(aGlobal, aUrl, baseURL, aRv);
if (aRv.Failed()) {
return nullptr;
}
url->Stringify(parsedURL, aRv);
}
if (aRv.Failed()) {
return nullptr;
}
if (aStatus != 301 && aStatus != 302 && aStatus != 303 && aStatus != 307 && aStatus != 308) {
aRv.ThrowRangeError<MSG_INVALID_REDIRECT_STATUSCODE_ERROR>();
return nullptr;
}
Optional<Nullable<fetch::ResponseBodyInit>> body;
ResponseInit init;
init.mStatus = aStatus;
RefPtr<Response> r = Response::Constructor(aGlobal, body, init, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
r->GetInternalHeaders()->Set(NS_LITERAL_CSTRING("Location"),
NS_ConvertUTF16toUTF8(parsedURL), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
r->GetInternalHeaders()->SetGuard(HeadersGuardEnum::Immutable, aRv);
MOZ_ASSERT(!aRv.Failed());
return r.forget();
}
/*static*/ already_AddRefed<Response>
Response::Constructor(const GlobalObject& aGlobal,
const Optional<Nullable<fetch::ResponseBodyInit>>& aBody,
const ResponseInit& aInit, ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
if (aInit.mStatus < 200 || aInit.mStatus > 599) {
aRv.ThrowRangeError<MSG_INVALID_RESPONSE_STATUSCODE_ERROR>();
return nullptr;
}
// Check if the status text contains illegal characters
nsACString::const_iterator start, end;
aInit.mStatusText.BeginReading(start);
aInit.mStatusText.EndReading(end);
if (FindCharInReadable('\r', start, end)) {
aRv.ThrowTypeError<MSG_RESPONSE_INVALID_STATUSTEXT_ERROR>();
return nullptr;
}
// Reset iterator since FindCharInReadable advances it.
aInit.mStatusText.BeginReading(start);
if (FindCharInReadable('\n', start, end)) {
aRv.ThrowTypeError<MSG_RESPONSE_INVALID_STATUSTEXT_ERROR>();
return nullptr;
}
RefPtr<InternalResponse> internalResponse =
new InternalResponse(aInit.mStatus, aInit.mStatusText);
// Grab a valid channel info from the global so this response is 'valid' for
// interception.
if (NS_IsMainThread()) {
ChannelInfo info;
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(global);
if (window) {
nsIDocument* doc = window->GetExtantDoc();
MOZ_ASSERT(doc);
info.InitFromDocument(doc);
} else {
info.InitFromChromeGlobal(global);
}
internalResponse->InitChannelInfo(info);
} else {
workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate();
MOZ_ASSERT(worker);
internalResponse->InitChannelInfo(worker->GetChannelInfo());
}
RefPtr<Response> r = new Response(global, internalResponse, nullptr);
if (aInit.mHeaders.WasPassed()) {
internalResponse->Headers()->Clear();
// Instead of using Fill, create an object to allow the constructor to
// unwrap the HeadersInit.
RefPtr<Headers> headers =
Headers::Create(global, aInit.mHeaders.Value(), aRv);
if (aRv.Failed()) {
return nullptr;
}
internalResponse->Headers()->Fill(*headers->GetInternalHeaders(), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
}
if (aBody.WasPassed() && !aBody.Value().IsNull()) {
if (aInit.mStatus == 204 || aInit.mStatus == 205 || aInit.mStatus == 304) {
aRv.ThrowTypeError<MSG_RESPONSE_NULL_STATUS_WITH_BODY>();
return nullptr;
}
nsCString contentTypeWithCharset;
nsCOMPtr<nsIInputStream> bodyStream;
int64_t bodySize = InternalResponse::UNKNOWN_BODY_SIZE;
const fetch::ResponseBodyInit& body = aBody.Value().Value();
if (body.IsReadableStream()) {
const ReadableStream& readableStream = body.GetAsReadableStream();
JS::Rooted<JSObject*> readableStreamObj(aGlobal.Context(),
readableStream.Obj());
if (JS::ReadableStreamIsDisturbed(readableStreamObj) ||
JS::ReadableStreamIsLocked(readableStreamObj) ||
!JS::ReadableStreamIsReadable(readableStreamObj)) {
aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
return nullptr;
}
r->SetReadableStreamBody(aGlobal.Context(), readableStreamObj);
if (JS::ReadableStreamGetMode(readableStreamObj) ==
JS::ReadableStreamMode::ExternalSource) {
// If this is a DOM generated ReadableStream, we can extract the
// inputStream directly.
void* underlyingSource = nullptr;
if (!JS::ReadableStreamGetExternalUnderlyingSource(aGlobal.Context(),
readableStreamObj,
&underlyingSource)) {
aRv.StealExceptionFromJSContext(aGlobal.Context());
return nullptr;
}
MOZ_ASSERT(underlyingSource);
aRv = FetchStream::RetrieveInputStream(underlyingSource,
getter_AddRefs(bodyStream));
// The releasing of the external source is needed in order to avoid an
// extra stream lock.
JS::ReadableStreamReleaseExternalUnderlyingSource(readableStreamObj);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
} else {
// If this is a JS-created ReadableStream, let's create a
// FetchStreamReader.
aRv = FetchStreamReader::Create(aGlobal.Context(), global,
getter_AddRefs(r->mFetchStreamReader),
getter_AddRefs(bodyStream));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
}
} else {
uint64_t size = 0;
aRv = ExtractByteStreamFromBody(body,
getter_AddRefs(bodyStream),
contentTypeWithCharset,
size);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
bodySize = size;
}
internalResponse->SetBody(bodyStream, bodySize);
if (!contentTypeWithCharset.IsVoid() &&
!internalResponse->Headers()->Has(NS_LITERAL_CSTRING("Content-Type"),
aRv)) {
// Ignore Append() failing here.
ErrorResult error;
internalResponse->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"),
contentTypeWithCharset, error);
error.SuppressException();
}
if (aRv.Failed()) {
return nullptr;
}
}
r->SetMimeType();
return r.forget();
}
already_AddRefed<Response>
Response::Clone(JSContext* aCx, ErrorResult& aRv)
{
if (BodyUsed()) {
aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
return nullptr;
}
RefPtr<FetchStreamReader> streamReader;
nsCOMPtr<nsIInputStream> inputStream;
JS::Rooted<JSObject*> body(aCx);
MaybeTeeReadableStreamBody(aCx, &body,
getter_AddRefs(streamReader),
getter_AddRefs(inputStream), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
MOZ_ASSERT_IF(body, streamReader);
MOZ_ASSERT_IF(body, inputStream);
RefPtr<InternalResponse> ir =
mInternalResponse->Clone(body
? InternalResponse::eDontCloneInputStream
: InternalResponse::eCloneInputStream);
RefPtr<Response> response = new Response(mOwner, ir, mSignal);
if (body) {
// Maybe we have a body, but we receive null from MaybeTeeReadableStreamBody
// if this body is a native stream. In this case the InternalResponse will
// have a clone of the native body and the ReadableStream will be created
// lazily if needed.
response->SetReadableStreamBody(aCx, body);
response->mFetchStreamReader = streamReader;
ir->SetBody(inputStream, InternalResponse::UNKNOWN_BODY_SIZE);
}
return response.forget();
}
already_AddRefed<Response>
Response::CloneUnfiltered(JSContext* aCx, ErrorResult& aRv)
{
if (BodyUsed()) {
aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
return nullptr;
}
RefPtr<FetchStreamReader> streamReader;
nsCOMPtr<nsIInputStream> inputStream;
JS::Rooted<JSObject*> body(aCx);
MaybeTeeReadableStreamBody(aCx, &body,
getter_AddRefs(streamReader),
getter_AddRefs(inputStream), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
MOZ_ASSERT_IF(body, streamReader);
MOZ_ASSERT_IF(body, inputStream);
RefPtr<InternalResponse> clone =
mInternalResponse->Clone(body
? InternalResponse::eDontCloneInputStream
: InternalResponse::eCloneInputStream);
RefPtr<InternalResponse> ir = clone->Unfiltered();
RefPtr<Response> ref = new Response(mOwner, ir, mSignal);
if (body) {
// Maybe we have a body, but we receive null from MaybeTeeReadableStreamBody
// if this body is a native stream. In this case the InternalResponse will
// have a clone of the native body and the ReadableStream will be created
// lazily if needed.
ref->SetReadableStreamBody(aCx, body);
ref->mFetchStreamReader = streamReader;
ir->SetBody(inputStream, InternalResponse::UNKNOWN_BODY_SIZE);
}
return ref.forget();
}
void
Response::SetBody(nsIInputStream* aBody, int64_t aBodySize)
{
MOZ_ASSERT(!BodyUsed());
mInternalResponse->SetBody(aBody, aBodySize);
}
already_AddRefed<InternalResponse>
Response::GetInternalResponse() const
{
RefPtr<InternalResponse> ref = mInternalResponse;
return ref.forget();
}
Headers*
Response::Headers_()
{
if (!mHeaders) {
mHeaders = new Headers(mOwner, mInternalResponse->Headers());
}
return mHeaders;
}
} // namespace dom
} // namespace mozilla