1 files changed, 172 insertions, 0 deletions
diff --git a/dom/presentation/ipc/PresentationBuilderChild.cpp b/dom/presentation/ipc/PresentationBuilderChild.cpp
new file mode 100644
index 0000000000..d4e1120392
--- /dev/null
+++ b/dom/presentation/ipc/PresentationBuilderChild.cpp
@@ -0,0 +1,172 @@
+/* -*- 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 "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 =
+      nsGlobalWindowInner::GetInnerWindowWithId(windowId);
+  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;
+}
+
+mozilla::ipc::IPCResult PresentationBuilderChild::RecvOnOffer(
+    const nsString& aSDP) {
+  if (NS_WARN_IF(!mBuilder)) {
+    return IPC_FAIL_NO_REASON(this);
+  }
+  RefPtr<DCPresentationChannelDescription> description =
+      new DCPresentationChannelDescription(aSDP);
+
+  if (NS_WARN_IF(NS_FAILED(mBuilder->OnOffer(description)))) {
+    return IPC_FAIL_NO_REASON(this);
+  }
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult PresentationBuilderChild::RecvOnAnswer(
+    const nsString& aSDP) {
+  if (NS_WARN_IF(!mBuilder)) {
+    return IPC_FAIL_NO_REASON(this);
+  }
+  RefPtr<DCPresentationChannelDescription> description =
+      new DCPresentationChannelDescription(aSDP);
+
+  if (NS_WARN_IF(NS_FAILED(mBuilder->OnAnswer(description)))) {
+    return IPC_FAIL_NO_REASON(this);
+  }
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult PresentationBuilderChild::RecvOnIceCandidate(
+    const nsString& aCandidate) {
+  if (NS_WARN_IF(mBuilder && NS_FAILED(mBuilder->OnIceCandidate(aCandidate)))) {
+    return IPC_FAIL_NO_REASON(this);
+  }
+  return IPC_OK();
+}
+
+// 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