already_AddRefed<DOMRequest>
nsBrowserElement::Download(const nsAString& aUrl,
const BrowserElementDownloadOptions& aOptions,
ErrorResult& aRv)
{
NS_ENSURE_TRUE(IsBrowserElementOrThrow(aRv), nullptr);
RefPtr<DOMRequest> req;
nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryInterface(mBrowserElementAPI);
MOZ_ASSERT(wrappedObj, "Failed to get wrapped JS from XPCOM component.");
MOZ_RELEASE_ASSERT(!js::IsWrapper(wrappedObj->GetJSObject()));
AutoJSAPI jsapi;
if (!jsapi.Init(wrappedObj->GetJSObject())) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
JSContext* cx = jsapi.cx();
JS::Rooted<JS::Value> options(cx);
aRv.MightThrowJSException();
if (!ToJSValue(cx, aOptions, &options)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
nsresult rv = mBrowserElementAPI->Download(aUrl, options, getter_AddRefs(req));
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
return req.forget();
}
already_AddRefed<DOMRequest>
nsBrowserElement::ExecuteScript(const nsAString& aScript,
const BrowserElementExecuteScriptOptions& aOptions,
ErrorResult& aRv)
{
NS_ENSURE_TRUE(IsBrowserElementOrThrow(aRv), nullptr);
NS_ENSURE_TRUE(IsNotWidgetOrThrow(aRv), nullptr);
nsCOMPtr<nsIDOMDOMRequest> req;
nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryInterface(mBrowserElementAPI);
MOZ_ASSERT(wrappedObj, "Failed to get wrapped JS from XPCOM component.");
AutoJSAPI jsapi;
jsapi.Init(wrappedObj->GetJSObject());
JSContext* cx = jsapi.cx();
JS::Rooted<JS::Value> options(cx);
aRv.MightThrowJSException();
if (!ToJSValue(cx, aOptions, &options)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
nsresult rv = mBrowserElementAPI->ExecuteScript(aScript, options, getter_AddRefs(req));
if (NS_FAILED(rv)) {
if (rv == NS_ERROR_INVALID_ARG) {
aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
} else {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
}
return nullptr;
}
return req.forget().downcast<DOMRequest>();
}
void FetchStreamReader::StartConsuming(JSContext* aCx, JS::HandleObject aStream,
JS::MutableHandle<JSObject*> aReader,
ErrorResult& aRv) {
MOZ_DIAGNOSTIC_ASSERT(!mReader);
MOZ_DIAGNOSTIC_ASSERT(aStream);
aRv.MightThrowJSException();
// Here, by spec, we can pick any global we want. Just to avoid extra
// cross-compartment steps, we want to create the reader in the same
// compartment of the owning Fetch Body object.
// The same global will be used to retrieve data from this reader.
JSAutoRealm ar(aCx, mGlobal->GetGlobalJSObject());
JS::Rooted<JSObject*> reader(
aCx, JS::ReadableStreamGetReader(aCx, aStream,
JS::ReadableStreamReaderMode::Default));
if (!reader) {
aRv.StealExceptionFromJSContext(aCx);
CloseAndRelease(aCx, NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
mReader = reader;
aReader.set(reader);
aRv = mPipeOut->AsyncWait(this, 0, 0, mOwningEventTarget);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
}
void BrowsingContext::Location(JSContext* aCx,
JS::MutableHandle<JSObject*> aLocation,
ErrorResult& aError) {
aError.MightThrowJSException();
sSingleton.GetProxyObject(aCx, &mLocation, aLocation);
if (!aLocation) {
aError.StealExceptionFromJSContext(aCx);
}
}
already_AddRefed<DOMRequest>
MobileMessageManager::SendMMS(const MmsParameters& aParams,
const MmsSendParameters& aSendParams,
ErrorResult& aRv)
{
nsCOMPtr<nsIMmsService> mmsService = do_GetService(MMS_SERVICE_CONTRACTID);
if (!mmsService) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
// Use the default one unless |aSendParams.serviceId| is available.
uint32_t serviceId;
nsresult rv;
if (aSendParams.mServiceId.WasPassed()) {
serviceId = aSendParams.mServiceId.Value();
} else {
rv = mmsService->GetMmsDefaultServiceId(&serviceId);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return nullptr;
}
}
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (!window) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
AutoJSAPI jsapi;
if (NS_WARN_IF(!jsapi.Init(window))) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
JSContext *cx = jsapi.cx();
JS::Rooted<JS::Value> val(cx);
aRv.MightThrowJSException();
if (!ToJSValue(cx, aParams, &val)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
RefPtr<DOMRequest> request = new DOMRequest(window);
nsCOMPtr<nsIMobileMessageCallback> msgCallback = new MobileMessageCallback(request);
rv = mmsService->Send(serviceId, val, msgCallback);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return nullptr;
}
return request.forget();
}
already_AddRefed<IDBTransaction>
IDBDatabase::Transaction(const StringOrStringSequence& aStoreNames,
IDBTransactionMode aMode,
ErrorResult& aRv)
{
AssertIsOnOwningThread();
aRv.MightThrowJSException();
if (aMode == IDBTransactionMode::Readwriteflush &&
!IndexedDatabaseManager::ExperimentalFeaturesEnabled()) {
// Pretend that this mode doesn't exist. We don't have a way to annotate
// certain enum values as depending on preferences so we just duplicate the
// normal exception generation here.
ThreadsafeAutoJSContext cx;
// Disable any automatic error reporting that might be set up so that we
// can grab the exception object.
AutoForceSetExceptionOnContext forceExn(cx);
MOZ_ALWAYS_FALSE(
ThrowErrorMessage(cx,
MSG_INVALID_ENUM_VALUE,
"Argument 2 of IDBDatabase.transaction",
"readwriteflush",
"IDBTransactionMode"));
MOZ_ASSERT(JS_IsExceptionPending(cx));
JS::Rooted<JS::Value> exception(cx);
MOZ_ALWAYS_TRUE(JS_GetPendingException(cx, &exception));
aRv.ThrowJSException(cx, exception);
return nullptr;
}
RefPtr<IDBTransaction> transaction;
aRv = Transaction(aStoreNames, aMode, getter_AddRefs(transaction));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return transaction.forget();
}
already_AddRefed<LabeledBlob>
LabeledBlob::Constructor(const GlobalObject& global,
JSContext* cx,
const nsAString& blob,
Label& privacy,
Label& trust, ErrorResult& aRv)
{
aRv.MightThrowJSException();
JSCompartment *compartment = js::GetContextCompartment(cx);
MOZ_ASSERT(compartment);
if (MOZ_UNLIKELY(!xpc::cowl::IsCompartmentConfined(compartment)))
xpc::cowl::EnableCompartmentConfinement(compartment);
nsRefPtr<Label> privs = xpc::cowl::GetCompartmentPrivileges(compartment);
// current compartment label must flow to label of blob
if (!xpc::cowl::GuardWrite(compartment, privacy, trust, privs)) {
COWL::JSErrorResult(cx, aRv,
"Label of blob is not above current label or below current clearance.");
return nullptr;
}
// Create blob
nsRefPtr<Label> privacyCopy = privacy.Clone(aRv);
if (aRv.Failed()) {
return nullptr;
}
nsRefPtr<Label> trustCopy = trust.Clone(aRv);
if (aRv.Failed()) {
return nullptr;
}
nsRefPtr<LabeledBlob> labeledBlob = new LabeledBlob(blob, privacy, trust);
if (aRv.Failed()) {
return nullptr;
}
return labeledBlob.forget();
}
void
LabeledBlob::GetBlob(JSContext* cx, nsString& aRetVal, ErrorResult& aRv) const
{
aRv.MightThrowJSException();
JSCompartment *compartment = js::GetContextCompartment(cx);
MOZ_ASSERT(compartment);
if (MOZ_UNLIKELY(!xpc::cowl::IsCompartmentConfined(compartment)))
xpc::cowl::EnableCompartmentConfinement(compartment);
nsRefPtr<Label> privs = xpc::cowl::GetCompartmentPrivileges(compartment);
// current compartment label must flow to label of target
// raise it if need be
// TODO: raise label if the following check does not hold
if (!xpc::cowl::GuardRead(compartment, *mPrivacy,*mTrust, privs, cx)) {
COWL::JSErrorResult(cx, aRv, "Cannot inspect blob.");
return;
}
aRetVal = mBlob;
}
already_AddRefed<Response>
Response::Clone(JSContext* aCx, ErrorResult& aRv)
{
bool bodyUsed = GetBodyUsed(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (!bodyUsed && mReadableStreamBody) {
aRv.MightThrowJSException();
AutoJSAPI jsapi;
if (!jsapi.Init(mOwner)) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
JSContext* cx = jsapi.cx();
JS::Rooted<JSObject*> body(cx, mReadableStreamBody);
bool locked;
// We just need to check the 'locked' state because GetBodyUsed() already
// checked the 'disturbed' state.
if (!JS::ReadableStreamIsLocked(cx, body, &locked)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
bodyUsed = locked;
}
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, GetSignalImpl());
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();
}
/*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 {
WorkerPrivate* worker = 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()) {
aRv.MightThrowJSException();
JSContext* cx = aGlobal.Context();
const ReadableStream& readableStream = body.GetAsReadableStream();
JS::Rooted<JSObject*> readableStreamObj(cx, readableStream.Obj());
bool disturbed;
bool locked;
if (!JS::ReadableStreamIsDisturbed(cx, readableStreamObj, &disturbed) ||
!JS::ReadableStreamIsLocked(cx, readableStreamObj, &locked)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
if (disturbed || locked) {
aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
return nullptr;
}
r->SetReadableStreamBody(cx, readableStreamObj);
JS::ReadableStreamMode streamMode;
if (!JS::ReadableStreamGetMode(cx, readableStreamObj, &streamMode)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
if (streamMode == JS::ReadableStreamMode::ExternalSource) {
// If this is a DOM generated ReadableStream, we can extract the
// inputStream directly.
void* underlyingSource = nullptr;
if (!JS::ReadableStreamGetExternalUnderlyingSource(cx,
readableStreamObj,
&underlyingSource)) {
aRv.StealExceptionFromJSContext(cx);
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.
if (!JS::ReadableStreamReleaseExternalUnderlyingSource(cx, readableStreamObj)) {
aRv.StealExceptionFromJSContext(cx);
return nullptr;
}
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();
}