1 files changed, 184 insertions, 0 deletions
diff --git a/dom/presentation/ipc/PresentationBuilderChild.cpp b/dom/presentation/ipc/PresentationBuilderChild.cpp
new file mode 100644
index 000000000..387332e9e
--- /dev/null
+++ b/dom/presentation/ipc/PresentationBuilderChild.cpp
@@ -0,0 +1,184 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=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 "DCPresentationChannelDescription.h"
+#include "nsComponentManagerUtils.h"
+#include "nsGlobalWindow.h"
+#include "PresentationBuilderChild.h"
+#include "PresentationIPCService.h"
+#include "nsServiceManagerUtils.h"
+#include "mozilla/Unused.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_ISUPPORTS(PresentationBuilderChild,
+                  nsIPresentationSessionTransportBuilderListener)
+
+PresentationBuilderChild::PresentationBuilderChild(const nsString& aSessionId,
+                                                   uint8_t aRole)
+  : mSessionId(aSessionId)
+  , mRole(aRole)
+{
+}
+
+nsresult PresentationBuilderChild::Init()
+{
+  mBuilder = do_CreateInstance("@mozilla.org/presentation/datachanneltransportbuilder;1");
+  if (NS_WARN_IF(!mBuilder)) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  uint64_t windowId = 0;
+
+  nsCOMPtr<nsIPresentationService> service =
+    do_GetService(PRESENTATION_SERVICE_CONTRACTID);
+  if (NS_WARN_IF(!service)) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  if (NS_WARN_IF(NS_FAILED(service->GetWindowIdBySessionId(
+                           mSessionId,
+                           mRole,
+                           &windowId)))) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  nsPIDOMWindowInner* window = nsGlobalWindow::GetInnerWindowWithId(windowId)->AsInner();
+  if (NS_WARN_IF(!window)) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  return mBuilder->BuildDataChannelTransport(mRole, window, this);
+}
+
+void
+PresentationBuilderChild::ActorDestroy(ActorDestroyReason aWhy)
+{
+  mBuilder = nullptr;
+  mActorDestroyed = true;
+}
+
+bool
+PresentationBuilderChild::RecvOnOffer(const nsString& aSDP)
+{
+  if (NS_WARN_IF(!mBuilder)) {
+    return false;
+  }
+  RefPtr<DCPresentationChannelDescription> description =
+    new DCPresentationChannelDescription(aSDP);
+
+  if (NS_WARN_IF(NS_FAILED(mBuilder->OnOffer(description)))) {
+    return false;
+  }
+  return true;
+}
+
+bool
+PresentationBuilderChild::RecvOnAnswer(const nsString& aSDP)
+{
+  if (NS_WARN_IF(!mBuilder)) {
+    return false;
+  }
+  RefPtr<DCPresentationChannelDescription> description =
+    new DCPresentationChannelDescription(aSDP);
+
+  if (NS_WARN_IF(NS_FAILED(mBuilder->OnAnswer(description)))) {
+    return false;
+  }
+  return true;
+}
+
+bool
+PresentationBuilderChild::RecvOnIceCandidate(const nsString& aCandidate)
+{
+  if (NS_WARN_IF(mBuilder && NS_FAILED(mBuilder->OnIceCandidate(aCandidate)))) {
+    return false;
+  }
+  return true;
+}
+
+// nsPresentationSessionTransportBuilderListener
+NS_IMETHODIMP
+PresentationBuilderChild::OnSessionTransport(nsIPresentationSessionTransport* aTransport)
+{
+  if (NS_WARN_IF(mActorDestroyed || !SendOnSessionTransport())){
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIPresentationService> service =
+    do_GetService(PRESENTATION_SERVICE_CONTRACTID);
+  NS_WARNING_ASSERTION(service, "no presentation service");
+  if (service) {
+    Unused << NS_WARN_IF(NS_FAILED(static_cast<PresentationIPCService*>(service.get())->
+                                     NotifySessionTransport(mSessionId, mRole, aTransport)));
+  }
+  mBuilder = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PresentationBuilderChild::OnError(nsresult reason)
+{
+  mBuilder = nullptr;
+
+  if (NS_WARN_IF(mActorDestroyed || !SendOnSessionTransportError(reason))){
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PresentationBuilderChild::SendOffer(nsIPresentationChannelDescription* aOffer)
+{
+  nsAutoString SDP;
+  nsresult rv = aOffer->GetDataChannelSDP(SDP);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (NS_WARN_IF(mActorDestroyed || !SendSendOffer(SDP))){
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PresentationBuilderChild::SendAnswer(nsIPresentationChannelDescription* aAnswer)
+{
+  nsAutoString SDP;
+  nsresult rv = aAnswer->GetDataChannelSDP(SDP);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (NS_WARN_IF(mActorDestroyed || !SendSendAnswer(SDP))){
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PresentationBuilderChild::SendIceCandidate(const nsAString& candidate)
+{
+  if (NS_WARN_IF(mActorDestroyed || !SendSendIceCandidate(nsString(candidate)))) {
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PresentationBuilderChild::Close(nsresult reason)
+{
+  if (NS_WARN_IF(mActorDestroyed || !SendClose(reason))) {
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+} // namespace dom
+} // namespace mozilla
+