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gecko-dev/dom/presentation/PresentationSessionInfo.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 "mozilla/dom/ContentParent.h"
#include "mozilla/dom/HTMLIFrameElementBinding.h"
#include "mozilla/dom/TabParent.h"
#include "mozilla/Logging.h"
#include "mozilla/Move.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "nsContentUtils.h"
#include "nsGlobalWindow.h"
#include "nsIDocShell.h"
#include "nsFrameLoader.h"
#include "nsIMutableArray.h"
#include "nsINetAddr.h"
#include "nsISocketTransport.h"
#include "nsISupportsPrimitives.h"
#include "nsNetCID.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "PresentationLog.h"
#include "PresentationService.h"
#include "PresentationSessionInfo.h"
#ifdef MOZ_WIDGET_ANDROID
#include "nsIPresentationNetworkHelper.h"
#endif // MOZ_WIDGET_ANDROID
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::services;
/*
* Implementation of PresentationChannelDescription
*/
namespace mozilla {
namespace dom {
#ifdef MOZ_WIDGET_ANDROID
namespace {
class PresentationNetworkHelper final : public nsIPresentationNetworkHelperListener
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIPRESENTATIONNETWORKHELPERLISTENER
using Function = nsresult(PresentationControllingInfo::*)(const nsACString&);
explicit PresentationNetworkHelper(PresentationControllingInfo* aInfo,
const Function& aFunc);
nsresult GetWifiIPAddress();
private:
~PresentationNetworkHelper() = default;
RefPtr<PresentationControllingInfo> mInfo;
Function mFunc;
};
NS_IMPL_ISUPPORTS(PresentationNetworkHelper,
nsIPresentationNetworkHelperListener)
PresentationNetworkHelper::PresentationNetworkHelper(PresentationControllingInfo* aInfo,
const Function& aFunc)
: mInfo(aInfo)
, mFunc(aFunc)
{
MOZ_ASSERT(aInfo);
MOZ_ASSERT(aFunc);
}
nsresult
PresentationNetworkHelper::GetWifiIPAddress()
{
nsresult rv;
nsCOMPtr<nsIPresentationNetworkHelper> networkHelper =
do_GetService(PRESENTATION_NETWORK_HELPER_CONTRACTID, &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return networkHelper->GetWifiIPAddress(this);
}
NS_IMETHODIMP
PresentationNetworkHelper::OnError(const nsACString & aReason)
{
PRES_ERROR("PresentationNetworkHelper::OnError: %s",
nsPromiseFlatCString(aReason).get());
return NS_OK;
}
NS_IMETHODIMP
PresentationNetworkHelper::OnGetWifiIPAddress(const nsACString& aIPAddress)
{
MOZ_ASSERT(mInfo);
MOZ_ASSERT(mFunc);
NS_DispatchToMainThread(
NewRunnableMethod<nsCString>("dom::PresentationNetworkHelper::OnGetWifiIPAddress",
mInfo,
mFunc,
aIPAddress));
return NS_OK;
}
} // anonymous namespace
#endif // MOZ_WIDGET_ANDROID
class TCPPresentationChannelDescription final : public nsIPresentationChannelDescription
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIPRESENTATIONCHANNELDESCRIPTION
TCPPresentationChannelDescription(const nsACString& aAddress,
uint16_t aPort)
: mAddress(aAddress)
, mPort(aPort)
{
}
private:
~TCPPresentationChannelDescription() {}
nsCString mAddress;
uint16_t mPort;
};
} // namespace dom
} // namespace mozilla
NS_IMPL_ISUPPORTS(TCPPresentationChannelDescription, nsIPresentationChannelDescription)
NS_IMETHODIMP
TCPPresentationChannelDescription::GetType(uint8_t* aRetVal)
{
if (NS_WARN_IF(!aRetVal)) {
return NS_ERROR_INVALID_POINTER;
}
*aRetVal = nsIPresentationChannelDescription::TYPE_TCP;
return NS_OK;
}
NS_IMETHODIMP
TCPPresentationChannelDescription::GetTcpAddress(nsIArray** aRetVal)
{
if (NS_WARN_IF(!aRetVal)) {
return NS_ERROR_INVALID_POINTER;
}
nsCOMPtr<nsIMutableArray> array = do_CreateInstance(NS_ARRAY_CONTRACTID);
if (NS_WARN_IF(!array)) {
return NS_ERROR_OUT_OF_MEMORY;
}
// TODO bug 1228504 Take all IP addresses in PresentationChannelDescription
// into account. And at the first stage Presentation API is only exposed on
// Firefox OS where the first IP appears enough for most scenarios.
nsCOMPtr<nsISupportsCString> address = do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID);
if (NS_WARN_IF(!address)) {
return NS_ERROR_OUT_OF_MEMORY;
}
address->SetData(mAddress);
array->AppendElement(address, false);
array.forget(aRetVal);
return NS_OK;
}
NS_IMETHODIMP
TCPPresentationChannelDescription::GetTcpPort(uint16_t* aRetVal)
{
if (NS_WARN_IF(!aRetVal)) {
return NS_ERROR_INVALID_POINTER;
}
*aRetVal = mPort;
return NS_OK;
}
NS_IMETHODIMP
TCPPresentationChannelDescription::GetDataChannelSDP(nsAString& aDataChannelSDP)
{
aDataChannelSDP.Truncate();
return NS_OK;
}
/*
* Implementation of PresentationSessionInfo
*/
NS_IMPL_ISUPPORTS(PresentationSessionInfo,
nsIPresentationSessionTransportCallback,
nsIPresentationControlChannelListener,
nsIPresentationSessionTransportBuilderListener);
/* virtual */ nsresult
PresentationSessionInfo::Init(nsIPresentationControlChannel* aControlChannel)
{
SetControlChannel(aControlChannel);
return NS_OK;
}
/* virtual */ void
PresentationSessionInfo::Shutdown(nsresult aReason)
{
PRES_DEBUG("%s:id[%s], reason[%" PRIx32 "], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), static_cast<uint32_t>(aReason),
mRole);
NS_WARNING_ASSERTION(NS_SUCCEEDED(aReason), "bad reason");
// Close the control channel if any.
if (mControlChannel) {
Unused << NS_WARN_IF(NS_FAILED(mControlChannel->Disconnect(aReason)));
}
// Close the data transport channel if any.
if (mTransport) {
// |mIsTransportReady| will be unset once |NotifyTransportClosed| is called.
Unused << NS_WARN_IF(NS_FAILED(mTransport->Close(aReason)));
}
mIsResponderReady = false;
mIsOnTerminating = false;
ResetBuilder();
}
nsresult
PresentationSessionInfo::SetListener(nsIPresentationSessionListener* aListener)
{
mListener = aListener;
if (mListener) {
// Enable data notification for the transport channel if it's available.
if (mTransport) {
nsresult rv = mTransport->EnableDataNotification();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
// The transport might become ready, or might become un-ready again, before
// the listener has registered. So notify the listener of the state change.
return mListener->NotifyStateChange(mSessionId, mState, mReason);
}
return NS_OK;
}
nsresult
PresentationSessionInfo::Send(const nsAString& aData)
{
if (NS_WARN_IF(!IsSessionReady())) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
if (NS_WARN_IF(!mTransport)) {
return NS_ERROR_NOT_AVAILABLE;
}
return mTransport->Send(aData);
}
nsresult
PresentationSessionInfo::SendBinaryMsg(const nsACString& aData)
{
if (NS_WARN_IF(!IsSessionReady())) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
if (NS_WARN_IF(!mTransport)) {
return NS_ERROR_NOT_AVAILABLE;
}
return mTransport->SendBinaryMsg(aData);
}
nsresult
PresentationSessionInfo::SendBlob(nsIDOMBlob* aBlob)
{
if (NS_WARN_IF(!IsSessionReady())) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
if (NS_WARN_IF(!mTransport)) {
return NS_ERROR_NOT_AVAILABLE;
}
return mTransport->SendBlob(aBlob);
}
nsresult
PresentationSessionInfo::Close(nsresult aReason,
uint32_t aState)
{
// Do nothing if session is already terminated.
if (nsIPresentationSessionListener::STATE_TERMINATED == mState) {
return NS_OK;
}
SetStateWithReason(aState, aReason);
switch (aState) {
case nsIPresentationSessionListener::STATE_CLOSED: {
Shutdown(aReason);
break;
}
case nsIPresentationSessionListener::STATE_TERMINATED: {
if (!mControlChannel) {
nsCOMPtr<nsIPresentationControlChannel> ctrlChannel;
nsresult rv = mDevice->EstablishControlChannel(getter_AddRefs(ctrlChannel));
if (NS_FAILED(rv)) {
Shutdown(rv);
return rv;
}
SetControlChannel(ctrlChannel);
return rv;
}
ContinueTermination();
return NS_OK;
}
}
return NS_OK;
}
nsresult
PresentationSessionInfo::OnTerminate(nsIPresentationControlChannel* aControlChannel)
{
mIsOnTerminating = true; // Mark for terminating transport channel
SetStateWithReason(nsIPresentationSessionListener::STATE_TERMINATED, NS_OK);
SetControlChannel(aControlChannel);
return NS_OK;
}
nsresult
PresentationSessionInfo::ReplySuccess()
{
SetStateWithReason(nsIPresentationSessionListener::STATE_CONNECTED, NS_OK);
return NS_OK;
}
nsresult
PresentationSessionInfo::ReplyError(nsresult aError)
{
Shutdown(aError);
// Remove itself since it never succeeds.
return UntrackFromService();
}
/* virtual */ nsresult
PresentationSessionInfo::UntrackFromService()
{
nsCOMPtr<nsIPresentationService> service =
do_GetService(PRESENTATION_SERVICE_CONTRACTID);
if (NS_WARN_IF(!service)) {
return NS_ERROR_NOT_AVAILABLE;
}
static_cast<PresentationService*>(service.get())->UntrackSessionInfo(mSessionId, mRole);
return NS_OK;
}
nsPIDOMWindowInner*
PresentationSessionInfo::GetWindow()
{
nsCOMPtr<nsIPresentationService> service =
do_GetService(PRESENTATION_SERVICE_CONTRACTID);
if (NS_WARN_IF(!service)) {
return nullptr;
}
uint64_t windowId = 0;
if (NS_WARN_IF(NS_FAILED(service->GetWindowIdBySessionId(mSessionId,
mRole,
&windowId)))) {
return nullptr;
}
auto window = nsGlobalWindow::GetInnerWindowWithId(windowId);
if (!window) {
return nullptr;
}
return window->AsInner();
}
/* virtual */ bool
PresentationSessionInfo::IsAccessible(base::ProcessId aProcessId)
{
// No restriction by default.
return true;
}
void
PresentationSessionInfo::ContinueTermination()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mControlChannel);
if (NS_WARN_IF(NS_FAILED(mControlChannel->Terminate(mSessionId)))
|| mIsOnTerminating) {
Shutdown(NS_OK);
}
}
// nsIPresentationSessionTransportCallback
NS_IMETHODIMP
PresentationSessionInfo::NotifyTransportReady()
{
PRES_DEBUG("%s:id[%s], role[%d], state[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole, mState);
MOZ_ASSERT(NS_IsMainThread());
if (mState != nsIPresentationSessionListener::STATE_CONNECTING &&
mState != nsIPresentationSessionListener::STATE_CONNECTED) {
return NS_OK;
}
mIsTransportReady = true;
// Established RTCDataChannel implies responder is ready.
if (mTransportType == nsIPresentationChannelDescription::TYPE_DATACHANNEL) {
mIsResponderReady = true;
}
// At sender side, session might not be ready at this point (waiting for
// receiver's answer). Yet at receiver side, session must be ready at this
// point since the data transport channel is created after the receiver page
// is ready for presentation use.
if (IsSessionReady()) {
return ReplySuccess();
}
return NS_OK;
}
NS_IMETHODIMP
PresentationSessionInfo::NotifyTransportClosed(nsresult aReason)
{
PRES_DEBUG("%s:id[%s], reason[%" PRIx32 "], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), static_cast<uint32_t>(aReason),
mRole);
MOZ_ASSERT(NS_IsMainThread());
// Nullify |mTransport| here so it won't try to re-close |mTransport| in
// potential subsequent |Shutdown| calls.
mTransport = nullptr;
if (NS_WARN_IF(!IsSessionReady() &&
mState == nsIPresentationSessionListener::STATE_CONNECTING)) {
// It happens before the session is ready. Reply the callback.
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
// Unset |mIsTransportReady| here so it won't affect |IsSessionReady()| above.
mIsTransportReady = false;
if (mState == nsIPresentationSessionListener::STATE_CONNECTED) {
// The transport channel is closed unexpectedly (not caused by a |Close| call).
SetStateWithReason(nsIPresentationSessionListener::STATE_CLOSED, aReason);
}
Shutdown(aReason);
if (mState == nsIPresentationSessionListener::STATE_TERMINATED) {
// Directly untrack the session info from the service.
return UntrackFromService();
}
return NS_OK;
}
NS_IMETHODIMP
PresentationSessionInfo::NotifyData(const nsACString& aData, bool aIsBinary)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!IsSessionReady())) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
if (NS_WARN_IF(!mListener)) {
return NS_ERROR_NOT_AVAILABLE;
}
return mListener->NotifyMessage(mSessionId, aData, aIsBinary);
}
// nsIPresentationSessionTransportBuilderListener
NS_IMETHODIMP
PresentationSessionInfo::OnSessionTransport(nsIPresentationSessionTransport* aTransport)
{
PRES_DEBUG("%s:id[%s], role[%d], state[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole, mState);
ResetBuilder();
if (mState != nsIPresentationSessionListener::STATE_CONNECTING) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!aTransport)) {
return NS_ERROR_INVALID_ARG;
}
mTransport = aTransport;
nsresult rv = mTransport->SetCallback(this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (mListener) {
mTransport->EnableDataNotification();
}
return NS_OK;
}
NS_IMETHODIMP
PresentationSessionInfo::OnError(nsresult aReason)
{
PRES_DEBUG("%s:id[%s], reason[%" PRIx32 "], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), static_cast<uint32_t>(aReason),
mRole);
ResetBuilder();
return ReplyError(aReason);
}
NS_IMETHODIMP
PresentationSessionInfo::SendOffer(nsIPresentationChannelDescription* aOffer)
{
return mControlChannel->SendOffer(aOffer);
}
NS_IMETHODIMP
PresentationSessionInfo::SendAnswer(nsIPresentationChannelDescription* aAnswer)
{
return mControlChannel->SendAnswer(aAnswer);
}
NS_IMETHODIMP
PresentationSessionInfo::SendIceCandidate(const nsAString& candidate)
{
return mControlChannel->SendIceCandidate(candidate);
}
NS_IMETHODIMP
PresentationSessionInfo::Close(nsresult reason)
{
return mControlChannel->Disconnect(reason);
}
/**
* Implementation of PresentationControllingInfo
*
* During presentation session establishment, the sender expects the following
* after trying to establish the control channel: (The order between step 3 and
* 4 is not guaranteed.)
* 1. |Init| is called to open a socket |mServerSocket| for data transport
* channel.
* 2. |NotifyConnected| of |nsIPresentationControlChannelListener| is called to
* indicate the control channel is ready to use. Then send the offer to the
* receiver via the control channel.
* 3.1 |OnSocketAccepted| of |nsIServerSocketListener| is called to indicate the
* data transport channel is connected. Then initialize |mTransport|.
* 3.2 |NotifyTransportReady| of |nsIPresentationSessionTransportCallback| is
* called.
* 4. |OnAnswer| of |nsIPresentationControlChannelListener| is called to
* indicate the receiver is ready. Close the control channel since it's no
* longer needed.
* 5. Once both step 3 and 4 are done, the presentation session is ready to use.
* So notify the listener of CONNECTED state.
*/
NS_IMPL_ISUPPORTS_INHERITED(PresentationControllingInfo,
PresentationSessionInfo,
nsIServerSocketListener)
nsresult
PresentationControllingInfo::Init(nsIPresentationControlChannel* aControlChannel)
{
PresentationSessionInfo::Init(aControlChannel);
// Initialize |mServerSocket| for bootstrapping the data transport channel and
// use |this| as the listener.
mServerSocket = do_CreateInstance(NS_SERVERSOCKET_CONTRACTID);
if (NS_WARN_IF(!mServerSocket)) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
nsresult rv = mServerSocket->Init(-1, false, -1);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = mServerSocket->AsyncListen(this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
int32_t port;
rv = mServerSocket->GetPort(&port);
if (!NS_WARN_IF(NS_FAILED(rv))) {
PRES_DEBUG("%s:ServerSocket created.port[%d]\n",__func__, port);
}
return NS_OK;
}
void
PresentationControllingInfo::Shutdown(nsresult aReason)
{
PresentationSessionInfo::Shutdown(aReason);
// Close the server socket if any.
if (mServerSocket) {
Unused << NS_WARN_IF(NS_FAILED(mServerSocket->Close()));
mServerSocket = nullptr;
}
}
nsresult
PresentationControllingInfo::GetAddress()
{
if (nsContentUtils::ShouldResistFingerprinting()) {
return NS_ERROR_FAILURE;
}
#if defined(MOZ_WIDGET_ANDROID)
RefPtr<PresentationNetworkHelper> networkHelper =
new PresentationNetworkHelper(this,
&PresentationControllingInfo::OnGetAddress);
nsresult rv = networkHelper->GetWifiIPAddress();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
#else
nsCOMPtr<nsINetworkInfoService> networkInfo = do_GetService(NETWORKINFOSERVICE_CONTRACT_ID);
MOZ_ASSERT(networkInfo);
nsresult rv = networkInfo->ListNetworkAddresses(this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
#endif
return NS_OK;
}
nsresult
PresentationControllingInfo::OnGetAddress(const nsACString& aAddress)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!mServerSocket)) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!mControlChannel)) {
return NS_ERROR_FAILURE;
}
// Prepare and send the offer.
int32_t port;
nsresult rv = mServerSocket->GetPort(&port);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
RefPtr<TCPPresentationChannelDescription> description =
new TCPPresentationChannelDescription(aAddress, static_cast<uint16_t>(port));
return mControlChannel->SendOffer(description);
}
// nsIPresentationControlChannelListener
NS_IMETHODIMP
PresentationControllingInfo::OnIceCandidate(const nsAString& aCandidate)
{
if (mTransportType != nsIPresentationChannelDescription::TYPE_DATACHANNEL) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder>
builder = do_QueryInterface(mBuilder);
if (NS_WARN_IF(!builder)) {
return NS_ERROR_FAILURE;
}
return builder->OnIceCandidate(aCandidate);
}
NS_IMETHODIMP
PresentationControllingInfo::OnOffer(nsIPresentationChannelDescription* aDescription)
{
MOZ_ASSERT(false, "Sender side should not receive offer.");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
PresentationControllingInfo::OnAnswer(nsIPresentationChannelDescription* aDescription)
{
if (mTransportType == nsIPresentationChannelDescription::TYPE_DATACHANNEL) {
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder>
builder = do_QueryInterface(mBuilder);
if (NS_WARN_IF(!builder)) {
return NS_ERROR_FAILURE;
}
return builder->OnAnswer(aDescription);
}
mIsResponderReady = true;
// Close the control channel since it's no longer needed.
nsresult rv = mControlChannel->Disconnect(NS_OK);
if (NS_WARN_IF(NS_FAILED(rv))) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
// Session might not be ready at this moment (waiting for the establishment of
// the data transport channel).
if (IsSessionReady()){
return ReplySuccess();
}
return NS_OK;
}
NS_IMETHODIMP
PresentationControllingInfo::NotifyConnected()
{
PRES_DEBUG("%s:id[%s], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole);
MOZ_ASSERT(NS_IsMainThread());
switch (mState) {
case nsIPresentationSessionListener::STATE_CONNECTING: {
if (mIsReconnecting) {
return ContinueReconnect();
}
nsresult rv = mControlChannel->Launch(GetSessionId(), GetUrl());
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
Unused << NS_WARN_IF(NS_FAILED(BuildTransport()));
break;
}
case nsIPresentationSessionListener::STATE_TERMINATED: {
ContinueTermination();
break;
}
default:
break;
}
return NS_OK;
}
NS_IMETHODIMP
PresentationControllingInfo::NotifyReconnected()
{
PRES_DEBUG("%s:id[%s], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole);
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(mState != nsIPresentationSessionListener::STATE_CONNECTING)) {
return NS_ERROR_FAILURE;
}
return NotifyReconnectResult(NS_OK);
}
nsresult
PresentationControllingInfo::BuildTransport()
{
MOZ_ASSERT(NS_IsMainThread());
if (mState != nsIPresentationSessionListener::STATE_CONNECTING) {
return NS_OK;
}
if (NS_WARN_IF(!mBuilderConstructor)) {
return NS_ERROR_NOT_AVAILABLE;
}
if (!Preferences::GetBool("dom.presentation.session_transport.data_channel.enable")) {
// Build TCP session transport
return GetAddress();
}
/**
* Generally transport is maintained by the chrome process. However, data
* channel should be live with the DOM , which implies RTCDataChannel in an OOP
* page should be establish in the content process.
*
* |mBuilderConstructor| is responsible for creating a builder, which is for
* building a data channel transport.
*
* In the OOP case, |mBuilderConstructor| would create a builder which is
* an object of |PresentationBuilderParent|. So, |BuildDataChannelTransport|
* triggers an IPC call to make content process establish a RTCDataChannel
* transport.
*/
mTransportType = nsIPresentationChannelDescription::TYPE_DATACHANNEL;
if (NS_WARN_IF(NS_FAILED(
mBuilderConstructor->CreateTransportBuilder(mTransportType,
getter_AddRefs(mBuilder))))) {
return NS_ERROR_NOT_AVAILABLE;
}
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder>
dataChannelBuilder(do_QueryInterface(mBuilder));
if (NS_WARN_IF(!dataChannelBuilder)) {
return NS_ERROR_NOT_AVAILABLE;
}
// OOP window would be set from content process
nsPIDOMWindowInner* window = GetWindow();
nsresult rv = dataChannelBuilder->
BuildDataChannelTransport(nsIPresentationService::ROLE_CONTROLLER,
window,
this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
PresentationControllingInfo::NotifyDisconnected(nsresult aReason)
{
PRES_DEBUG("%s:id[%s], reason[%" PRIx32 "], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), static_cast<uint32_t>(aReason),
mRole);
MOZ_ASSERT(NS_IsMainThread());
if (mTransportType == nsIPresentationChannelDescription::TYPE_DATACHANNEL) {
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder>
builder = do_QueryInterface(mBuilder);
if (builder) {
Unused << NS_WARN_IF(NS_FAILED(builder->NotifyDisconnected(aReason)));
}
}
// Unset control channel here so it won't try to re-close it in potential
// subsequent |Shutdown| calls.
SetControlChannel(nullptr);
if (NS_WARN_IF(NS_FAILED(aReason) || !mIsResponderReady)) {
// The presentation session instance may already exist.
// Change the state to CLOSED if it is not terminated.
if (nsIPresentationSessionListener::STATE_TERMINATED != mState) {
SetStateWithReason(nsIPresentationSessionListener::STATE_CLOSED, aReason);
}
// If |aReason| is NS_OK, it implies that the user closes the connection
// before becomming connected. No need to call |ReplyError| in this case.
if (NS_FAILED(aReason)) {
if (mIsReconnecting) {
NotifyReconnectResult(NS_ERROR_DOM_OPERATION_ERR);
}
// Reply error for an abnormal close.
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
Shutdown(aReason);
}
// This is the case for reconnecting a connection which is in
// connecting state and |mTransport| is not ready.
if (mDoReconnectAfterClose && !mTransport) {
mDoReconnectAfterClose = false;
return Reconnect(mReconnectCallback);
}
return NS_OK;
}
// nsIServerSocketListener
NS_IMETHODIMP
PresentationControllingInfo::OnSocketAccepted(nsIServerSocket* aServerSocket,
nsISocketTransport* aTransport)
{
int32_t port;
nsresult rv = aTransport->GetPort(&port);
if (!NS_WARN_IF(NS_FAILED(rv))) {
PRES_DEBUG("%s:receive from port[%d]\n",__func__, port);
}
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!mBuilderConstructor)) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
// Initialize session transport builder and use |this| as the callback.
nsCOMPtr<nsIPresentationTCPSessionTransportBuilder> builder;
if (NS_SUCCEEDED(mBuilderConstructor->CreateTransportBuilder(
nsIPresentationChannelDescription::TYPE_TCP,
getter_AddRefs(mBuilder)))) {
builder = do_QueryInterface(mBuilder);
}
if (NS_WARN_IF(!builder)) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
mTransportType = nsIPresentationChannelDescription::TYPE_TCP;
return builder->BuildTCPSenderTransport(aTransport, this);
}
NS_IMETHODIMP
PresentationControllingInfo::OnStopListening(nsIServerSocket* aServerSocket,
nsresult aStatus)
{
PRES_DEBUG("controller %s:status[%" PRIx32 "]\n",__func__,
static_cast<uint32_t>(aStatus));
MOZ_ASSERT(NS_IsMainThread());
if (aStatus == NS_BINDING_ABORTED) { // The server socket was manually closed.
return NS_OK;
}
Shutdown(aStatus);
if (NS_WARN_IF(!IsSessionReady())) {
// It happens before the session is ready. Reply the callback.
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
// It happens after the session is ready. Change the state to CLOSED.
SetStateWithReason(nsIPresentationSessionListener::STATE_CLOSED, aStatus);
return NS_OK;
}
/**
* The steps to reconnect a session are summarized below:
* 1. Change |mState| to CONNECTING.
* 2. Check whether |mControlChannel| is existed or not. Usually we have to
* create a new control cahnnel.
* 3.1 |mControlChannel| is null, which means we have to create a new one.
* |EstablishControlChannel| is called to create a new control channel.
* At this point, |mControlChannel| is not able to use yet. Set
* |mIsReconnecting| to true and wait until |NotifyConnected|.
* 3.2 |mControlChannel| is not null and is avaliable.
* We can just call |ContinueReconnect| to send reconnect command.
* 4. |NotifyReconnected| of |nsIPresentationControlChannelListener| is called
* to indicate the receiver is ready for reconnecting.
* 5. Once both step 3 and 4 are done, the rest is to build a new data
* transport channel by following the same steps as starting a
* new session.
*/
nsresult
PresentationControllingInfo::Reconnect(nsIPresentationServiceCallback* aCallback)
{
PRES_DEBUG("%s:id[%s], role[%d], state[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole, mState);
if (!aCallback) {
return NS_ERROR_INVALID_ARG;
}
mReconnectCallback = aCallback;
if (NS_WARN_IF(mState == nsIPresentationSessionListener::STATE_TERMINATED)) {
return NotifyReconnectResult(NS_ERROR_DOM_INVALID_STATE_ERR);
}
// If |mState| is not CLOSED, we have to close the connection before
// reconnecting. The process to reconnect will be continued after
// |NotifyDisconnected| or |NotifyTransportClosed| is invoked.
if (mState == nsIPresentationSessionListener::STATE_CONNECTING ||
mState == nsIPresentationSessionListener::STATE_CONNECTED) {
mDoReconnectAfterClose = true;
return Close(NS_OK, nsIPresentationSessionListener::STATE_CLOSED);
}
// Make sure |mState| is closed at this point.
MOZ_ASSERT(mState == nsIPresentationSessionListener::STATE_CLOSED);
mState = nsIPresentationSessionListener::STATE_CONNECTING;
mIsReconnecting = true;
nsresult rv = NS_OK;
if (!mControlChannel) {
nsCOMPtr<nsIPresentationControlChannel> ctrlChannel;
rv = mDevice->EstablishControlChannel(getter_AddRefs(ctrlChannel));
if (NS_WARN_IF(NS_FAILED(rv))) {
return NotifyReconnectResult(NS_ERROR_DOM_OPERATION_ERR);
}
rv = Init(ctrlChannel);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NotifyReconnectResult(NS_ERROR_DOM_OPERATION_ERR);
}
} else {
return ContinueReconnect();
}
return NS_OK;
}
nsresult
PresentationControllingInfo::ContinueReconnect()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mControlChannel);
mIsReconnecting = false;
if (NS_WARN_IF(NS_FAILED(mControlChannel->Reconnect(mSessionId, GetUrl())))) {
return NotifyReconnectResult(NS_ERROR_DOM_OPERATION_ERR);
}
return NS_OK;
}
// nsIListNetworkAddressesListener
NS_IMETHODIMP
PresentationControllingInfo::OnListedNetworkAddresses(const char** aAddressArray,
uint32_t aAddressArraySize)
{
if (!aAddressArraySize) {
return OnListNetworkAddressesFailed();
}
// TODO bug 1228504 Take all IP addresses in PresentationChannelDescription
// into account. And at the first stage Presentation API is only exposed on
// Firefox OS where the first IP appears enough for most scenarios.
nsAutoCString ip;
ip.Assign(aAddressArray[0]);
// On Firefox desktop, the IP address is retrieved from a callback function.
// To make consistent code sequence, following function call is dispatched
// into main thread instead of calling it directly.
NS_DispatchToMainThread(NewRunnableMethod<nsCString>(
"dom::PresentationControllingInfo::OnGetAddress",
this,
&PresentationControllingInfo::OnGetAddress,
ip));
return NS_OK;
}
NS_IMETHODIMP
PresentationControllingInfo::OnListNetworkAddressesFailed()
{
PRES_ERROR("PresentationControllingInfo:OnListNetworkAddressesFailed");
// In 1-UA case, transport channel can still be established
// on loopback interface even if no network address available.
NS_DispatchToMainThread(NewRunnableMethod<nsCString>(
"dom::PresentationControllingInfo::OnGetAddress",
this,
&PresentationControllingInfo::OnGetAddress,
"127.0.0.1"));
return NS_OK;
}
nsresult
PresentationControllingInfo::NotifyReconnectResult(nsresult aStatus)
{
if (!mReconnectCallback) {
MOZ_ASSERT(false, "mReconnectCallback can not be null here.");
return NS_ERROR_FAILURE;
}
mIsReconnecting = false;
nsCOMPtr<nsIPresentationServiceCallback> callback =
mReconnectCallback.forget();
if (NS_FAILED(aStatus)) {
return callback->NotifyError(aStatus);
}
return callback->NotifySuccess(GetUrl());
}
// nsIPresentationSessionTransportCallback
NS_IMETHODIMP
PresentationControllingInfo::NotifyTransportReady()
{
return PresentationSessionInfo::NotifyTransportReady();
}
NS_IMETHODIMP
PresentationControllingInfo::NotifyTransportClosed(nsresult aReason)
{
if (!mDoReconnectAfterClose) {
return PresentationSessionInfo::NotifyTransportClosed(aReason);;
}
MOZ_ASSERT(mState == nsIPresentationSessionListener::STATE_CLOSED);
mTransport = nullptr;
mIsTransportReady = false;
mDoReconnectAfterClose = false;
return Reconnect(mReconnectCallback);
}
NS_IMETHODIMP
PresentationControllingInfo::NotifyData(const nsACString& aData, bool aIsBinary)
{
return PresentationSessionInfo::NotifyData(aData, aIsBinary);
}
/**
* Implementation of PresentationPresentingInfo
*
* During presentation session establishment, the receiver expects the following
* after trying to launch the app by notifying "presentation-launch-receiver":
* (The order between step 2 and 3 is not guaranteed.)
* 1. |Observe| of |nsIObserver| is called with "presentation-receiver-launched".
* Then start listen to document |STATE_TRANSFERRING| event.
* 2. |NotifyResponderReady| is called to indicate the receiver page is ready
* for presentation use.
* 3. |OnOffer| of |nsIPresentationControlChannelListener| is called.
* 4. Once both step 2 and 3 are done, establish the data transport channel and
* send the answer. (The control channel will be closed by the sender once it
* receives the answer.)
* 5. |NotifyTransportReady| of |nsIPresentationSessionTransportCallback| is
* called. The presentation session is ready to use, so notify the listener
* of CONNECTED state.
*/
NS_IMPL_ISUPPORTS_INHERITED(PresentationPresentingInfo,
PresentationSessionInfo,
nsITimerCallback,
nsINamed)
nsresult
PresentationPresentingInfo::Init(nsIPresentationControlChannel* aControlChannel)
{
PresentationSessionInfo::Init(aControlChannel);
// Add a timer to prevent waiting indefinitely in case the receiver page fails
// to become ready.
nsresult rv;
int32_t timeout =
Preferences::GetInt("presentation.receiver.loading.timeout", 10000);
mTimer = do_CreateInstance(NS_TIMER_CONTRACTID, &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = mTimer->InitWithCallback(this, timeout, nsITimer::TYPE_ONE_SHOT);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
void
PresentationPresentingInfo::Shutdown(nsresult aReason)
{
PresentationSessionInfo::Shutdown(aReason);
if (mTimer) {
mTimer->Cancel();
}
mLoadingCallback = nullptr;
mRequesterDescription = nullptr;
mPendingCandidates.Clear();
mPromise = nullptr;
mHasFlushPendingEvents = false;
}
// nsIPresentationSessionTransportBuilderListener
NS_IMETHODIMP
PresentationPresentingInfo::OnSessionTransport(nsIPresentationSessionTransport* aTransport)
{
nsresult rv = PresentationSessionInfo::OnSessionTransport(aTransport);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// The session transport is managed by content process
if (NS_WARN_IF(!aTransport)) {
return NS_ERROR_INVALID_ARG;
}
// send answer for TCP session transport
if (mTransportType == nsIPresentationChannelDescription::TYPE_TCP) {
// Prepare and send the answer.
// In the current implementation of |PresentationSessionTransport|,
// |GetSelfAddress| cannot return the real info when it's initialized via
// |buildTCPReceiverTransport|. Yet this deficiency only affects the channel
// description for the answer, which is not actually checked at requester side.
nsCOMPtr<nsINetAddr> selfAddr;
rv = mTransport->GetSelfAddress(getter_AddRefs(selfAddr));
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "GetSelfAddress failed");
nsCString address;
uint16_t port = 0;
if (NS_SUCCEEDED(rv)) {
selfAddr->GetAddress(address);
selfAddr->GetPort(&port);
}
nsCOMPtr<nsIPresentationChannelDescription> description =
new TCPPresentationChannelDescription(address, port);
return mControlChannel->SendAnswer(description);
}
return NS_OK;
}
// Delegate the pending offer and ICE candidates to builder.
NS_IMETHODIMP
PresentationPresentingInfo::FlushPendingEvents(nsIPresentationDataChannelSessionTransportBuilder* builder)
{
if (NS_WARN_IF(!builder)) {
return NS_ERROR_FAILURE;
}
mHasFlushPendingEvents = true;
if (mRequesterDescription) {
builder->OnOffer(mRequesterDescription);
}
mRequesterDescription = nullptr;
for (size_t i = 0; i < mPendingCandidates.Length(); ++i) {
builder->OnIceCandidate(mPendingCandidates[i]);
}
mPendingCandidates.Clear();
return NS_OK;
}
nsresult
PresentationPresentingInfo::InitTransportAndSendAnswer()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mState == nsIPresentationSessionListener::STATE_CONNECTING);
uint8_t type = 0;
nsresult rv = mRequesterDescription->GetType(&type);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (NS_WARN_IF(!mBuilderConstructor)) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
if (NS_WARN_IF(NS_FAILED(
mBuilderConstructor->CreateTransportBuilder(type,
getter_AddRefs(mBuilder))))) {
return NS_ERROR_NOT_AVAILABLE;
}
if (type == nsIPresentationChannelDescription::TYPE_TCP) {
// Establish a data transport channel |mTransport| to the sender and use
// |this| as the callback.
nsCOMPtr<nsIPresentationTCPSessionTransportBuilder> builder =
do_QueryInterface(mBuilder);
if (NS_WARN_IF(!builder)) {
return NS_ERROR_NOT_AVAILABLE;
}
mTransportType = nsIPresentationChannelDescription::TYPE_TCP;
return builder->BuildTCPReceiverTransport(mRequesterDescription, this);
}
if (type == nsIPresentationChannelDescription::TYPE_DATACHANNEL) {
if (!Preferences::GetBool("dom.presentation.session_transport.data_channel.enable")) {
return NS_ERROR_NOT_IMPLEMENTED;
}
/**
* Generally transport is maintained by the chrome process. However, data
* channel should be live with the DOM , which implies RTCDataChannel in an OOP
* page should be establish in the content process.
*
* |mBuilderConstructor| is responsible for creating a builder, which is for
* building a data channel transport.
*
* In the OOP case, |mBuilderConstructor| would create a builder which is
* an object of |PresentationBuilderParent|. So, |BuildDataChannelTransport|
* triggers an IPC call to make content process establish a RTCDataChannel
* transport.
*/
mTransportType = nsIPresentationChannelDescription::TYPE_DATACHANNEL;
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder> dataChannelBuilder =
do_QueryInterface(mBuilder);
if (NS_WARN_IF(!dataChannelBuilder)) {
return NS_ERROR_NOT_AVAILABLE;
}
nsPIDOMWindowInner* window = GetWindow();
rv = dataChannelBuilder->
BuildDataChannelTransport(nsIPresentationService::ROLE_RECEIVER,
window,
this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = FlushPendingEvents(dataChannelBuilder);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
MOZ_ASSERT(false, "Unknown nsIPresentationChannelDescription type!");
return NS_ERROR_UNEXPECTED;
}
nsresult
PresentationPresentingInfo::UntrackFromService()
{
// Remove the OOP responding info (if it has never been used).
if (mContentParent) {
Unused << NS_WARN_IF(!static_cast<ContentParent*>(mContentParent.get())->SendNotifyPresentationReceiverCleanUp(mSessionId));
}
// Receiver device might need clean up after session termination.
if (mDevice) {
mDevice->Disconnect();
}
mDevice = nullptr;
// Remove the session info (and the in-process responding info if there's any).
nsCOMPtr<nsIPresentationService> service =
do_GetService(PRESENTATION_SERVICE_CONTRACTID);
if (NS_WARN_IF(!service)) {
return NS_ERROR_NOT_AVAILABLE;
}
static_cast<PresentationService*>(service.get())->UntrackSessionInfo(mSessionId, mRole);
return NS_OK;
}
bool
PresentationPresentingInfo::IsAccessible(base::ProcessId aProcessId)
{
// Only the specific content process should access the responder info.
return (mContentParent) ?
aProcessId == static_cast<ContentParent*>(mContentParent.get())->OtherPid() :
false;
}
nsresult
PresentationPresentingInfo::NotifyResponderReady()
{
PRES_DEBUG("%s:id[%s], role[%d], state[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole, mState);
if (mTimer) {
mTimer->Cancel();
mTimer = nullptr;
}
mIsResponderReady = true;
// Initialize |mTransport| and send the answer to the sender if sender's
// description is already offered.
if (mRequesterDescription) {
nsresult rv = InitTransportAndSendAnswer();
if (NS_WARN_IF(NS_FAILED(rv))) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
}
return NS_OK;
}
nsresult
PresentationPresentingInfo::NotifyResponderFailure()
{
PRES_DEBUG("%s:id[%s], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole);
if (mTimer) {
mTimer->Cancel();
mTimer = nullptr;
}
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
nsresult
PresentationPresentingInfo::DoReconnect()
{
PRES_DEBUG("%s:id[%s], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole);
MOZ_ASSERT(mState == nsIPresentationSessionListener::STATE_CLOSED);
SetStateWithReason(nsIPresentationSessionListener::STATE_CONNECTING, NS_OK);
return NotifyResponderReady();
}
// nsIPresentationControlChannelListener
NS_IMETHODIMP
PresentationPresentingInfo::OnOffer(nsIPresentationChannelDescription* aDescription)
{
if (NS_WARN_IF(mHasFlushPendingEvents)) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
if (NS_WARN_IF(!aDescription)) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
mRequesterDescription = aDescription;
// Initialize |mTransport| and send the answer to the sender if the receiver
// page is ready for presentation use.
if (mIsResponderReady) {
nsresult rv = InitTransportAndSendAnswer();
if (NS_WARN_IF(NS_FAILED(rv))) {
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
}
return NS_OK;
}
NS_IMETHODIMP
PresentationPresentingInfo::OnAnswer(nsIPresentationChannelDescription* aDescription)
{
MOZ_ASSERT(false, "Receiver side should not receive answer.");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
PresentationPresentingInfo::OnIceCandidate(const nsAString& aCandidate)
{
if (!mBuilder && !mHasFlushPendingEvents) {
mPendingCandidates.AppendElement(nsString(aCandidate));
return NS_OK;
}
if (NS_WARN_IF(!mBuilder && mHasFlushPendingEvents)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder>
builder = do_QueryInterface(mBuilder);
return builder->OnIceCandidate(aCandidate);
}
NS_IMETHODIMP
PresentationPresentingInfo::NotifyConnected()
{
PRES_DEBUG("%s:id[%s], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), mRole);
if (nsIPresentationSessionListener::STATE_TERMINATED == mState) {
ContinueTermination();
}
return NS_OK;
}
NS_IMETHODIMP
PresentationPresentingInfo::NotifyReconnected()
{
MOZ_ASSERT(false, "NotifyReconnected should not be called at receiver side.");
return NS_OK;
}
NS_IMETHODIMP
PresentationPresentingInfo::NotifyDisconnected(nsresult aReason)
{
PRES_DEBUG("%s:id[%s], reason[%" PRIx32 "], role[%d]\n", __func__,
NS_ConvertUTF16toUTF8(mSessionId).get(), static_cast<uint32_t>(aReason),
mRole);
MOZ_ASSERT(NS_IsMainThread());
if (mTransportType == nsIPresentationChannelDescription::TYPE_DATACHANNEL) {
nsCOMPtr<nsIPresentationDataChannelSessionTransportBuilder>
builder = do_QueryInterface(mBuilder);
if (builder) {
Unused << NS_WARN_IF(NS_FAILED(builder->NotifyDisconnected(aReason)));
}
}
// Unset control channel here so it won't try to re-close it in potential
// subsequent |Shutdown| calls.
SetControlChannel(nullptr);
if (NS_WARN_IF(NS_FAILED(aReason))) {
// The presentation session instance may already exist.
// Change the state to TERMINATED since it never succeeds.
SetStateWithReason(nsIPresentationSessionListener::STATE_TERMINATED, aReason);
// Reply error for an abnormal close.
return ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
return NS_OK;
}
// nsITimerCallback
NS_IMETHODIMP
PresentationPresentingInfo::Notify(nsITimer* aTimer)
{
MOZ_ASSERT(NS_IsMainThread());
NS_WARNING("The receiver page fails to become ready before timeout.");
mTimer = nullptr;
return ReplyError(NS_ERROR_DOM_TIMEOUT_ERR);
}
// nsITimerCallback
NS_IMETHODIMP
PresentationPresentingInfo::GetName(nsACString& aName)
{
aName.AssignLiteral("PresentationPresentingInfo");
return NS_OK;
}
// PromiseNativeHandler
void
PresentationPresentingInfo::ResolvedCallback(JSContext* aCx,
JS::Handle<JS::Value> aValue)
{
MOZ_ASSERT(NS_IsMainThread());
if (NS_WARN_IF(!aValue.isObject())) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
if (NS_WARN_IF(!obj)) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
// Start to listen to document state change event |STATE_TRANSFERRING|.
// Use Element to support both HTMLIFrameElement and nsXULElement.
Element* frame = nullptr;
nsresult rv = UNWRAP_OBJECT(Element, &obj, frame);
if (NS_WARN_IF(!frame)) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
nsCOMPtr<nsIFrameLoaderOwner> owner = do_QueryInterface((nsIFrameLoaderOwner*) frame);
if (NS_WARN_IF(!owner)) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
nsCOMPtr<nsIFrameLoader> frameLoader = owner->GetFrameLoader();
if (NS_WARN_IF(!frameLoader)) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
RefPtr<TabParent> tabParent = TabParent::GetFrom(frameLoader);
if (tabParent) {
// OOP frame
// Notify the content process that a receiver page has launched, so it can
// start monitoring the loading progress.
mContentParent = tabParent->Manager();
Unused << NS_WARN_IF(!static_cast<ContentParent*>(mContentParent.get())->SendNotifyPresentationReceiverLaunched(tabParent, mSessionId));
} else {
// In-process frame
nsCOMPtr<nsIDocShell> docShell;
rv = frameLoader->GetDocShell(getter_AddRefs(docShell));
if (NS_WARN_IF(NS_FAILED(rv))) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
// Keep an eye on the loading progress of the receiver page.
mLoadingCallback = new PresentationResponderLoadingCallback(mSessionId);
rv = mLoadingCallback->Init(docShell);
if (NS_WARN_IF(NS_FAILED(rv))) {
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
return;
}
}
}
void
PresentationPresentingInfo::RejectedCallback(JSContext* aCx,
JS::Handle<JS::Value> aValue)
{
MOZ_ASSERT(NS_IsMainThread());
NS_WARNING("Launching the receiver page has been rejected.");
if (mTimer) {
mTimer->Cancel();
mTimer = nullptr;
}
ReplyError(NS_ERROR_DOM_OPERATION_ERR);
}
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