Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 380 insertions, 0 deletions

diff --git a/dom/ipc/jsactor/JSWindowActorProtocol.cpp b/dom/ipc/jsactor/JSWindowActorProtocol.cpp
new file mode 100644
index 0000000000..a459d94204
--- /dev/null
+++ b/dom/ipc/jsactor/JSWindowActorProtocol.cpp
@@ -0,0 +1,380 @@
+/* -*- 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 "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/JSActorBinding.h"
+#include "mozilla/dom/JSActorService.h"
+#include "mozilla/dom/JSWindowActorBinding.h"
+#include "mozilla/dom/JSWindowActorChild.h"
+#include "mozilla/dom/JSWindowActorProtocol.h"
+#include "mozilla/dom/PContent.h"
+#include "mozilla/dom/WindowGlobalChild.h"
+
+#include "mozilla/extensions/MatchPattern.h"
+#include "nsContentUtils.h"
+#include "JSActorProtocolUtils.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(JSWindowActorProtocol)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(JSWindowActorProtocol)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSWindowActorProtocol)
+  NS_INTERFACE_MAP_ENTRY(nsIObserver)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION(JSWindowActorProtocol)
+
+/* static */ already_AddRefed<JSWindowActorProtocol>
+JSWindowActorProtocol::FromIPC(const JSWindowActorInfo& aInfo) {
+  MOZ_DIAGNOSTIC_ASSERT(XRE_IsContentProcess());
+
+  RefPtr<JSWindowActorProtocol> proto = new JSWindowActorProtocol(aInfo.name());
+  JSActorProtocolUtils::FromIPCShared(proto, aInfo);
+
+  // Content processes cannot load chrome browsing contexts, so this flag is
+  // irrelevant and not propagated.
+  proto->mIncludeChrome = false;
+  proto->mAllFrames = aInfo.allFrames();
+  proto->mMatches = aInfo.matches().Clone();
+  proto->mMessageManagerGroups = aInfo.messageManagerGroups().Clone();
+
+  proto->mChild.mEvents.SetCapacity(aInfo.events().Length());
+  for (auto& ipc : aInfo.events()) {
+    auto event = proto->mChild.mEvents.AppendElement();
+    event->mName.Assign(ipc.name());
+    event->mFlags.mCapture = ipc.capture();
+    event->mFlags.mInSystemGroup = ipc.systemGroup();
+    event->mFlags.mAllowUntrustedEvents = ipc.allowUntrusted();
+    if (ipc.passive()) {
+      event->mPassive.Construct(ipc.passive().value());
+    }
+    event->mCreateActor = ipc.createActor();
+  }
+
+  return proto.forget();
+}
+
+JSWindowActorInfo JSWindowActorProtocol::ToIPC() {
+  MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
+
+  JSWindowActorInfo info;
+  JSActorProtocolUtils::ToIPCShared(info, this);
+
+  info.allFrames() = mAllFrames;
+  info.matches() = mMatches.Clone();
+  info.messageManagerGroups() = mMessageManagerGroups.Clone();
+
+  info.events().SetCapacity(mChild.mEvents.Length());
+  for (auto& event : mChild.mEvents) {
+    auto ipc = info.events().AppendElement();
+    ipc->name().Assign(event.mName);
+    ipc->capture() = event.mFlags.mCapture;
+    ipc->systemGroup() = event.mFlags.mInSystemGroup;
+    ipc->allowUntrusted() = event.mFlags.mAllowUntrustedEvents;
+    if (event.mPassive.WasPassed()) {
+      ipc->passive() = Some(event.mPassive.Value());
+    }
+    ipc->createActor() = event.mCreateActor;
+  }
+
+  return info;
+}
+
+already_AddRefed<JSWindowActorProtocol>
+JSWindowActorProtocol::FromWebIDLOptions(const nsACString& aName,
+                                         const WindowActorOptions& aOptions,
+                                         ErrorResult& aRv) {
+  MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
+
+  RefPtr<JSWindowActorProtocol> proto = new JSWindowActorProtocol(aName);
+  if (!JSActorProtocolUtils::FromWebIDLOptionsShared(proto, aOptions, aRv)) {
+    return nullptr;
+  }
+
+  proto->mAllFrames = aOptions.mAllFrames;
+  proto->mIncludeChrome = aOptions.mIncludeChrome;
+
+  if (aOptions.mMatches.WasPassed()) {
+    MOZ_ASSERT(aOptions.mMatches.Value().Length());
+    proto->mMatches = aOptions.mMatches.Value();
+  }
+
+  if (aOptions.mMessageManagerGroups.WasPassed()) {
+    proto->mMessageManagerGroups = aOptions.mMessageManagerGroups.Value();
+  }
+
+  // For each event declared in the source dictionary, initialize the
+  // corresponding event declaration entry in the JSWindowActorProtocol.
+  if (aOptions.mChild.WasPassed() &&
+      aOptions.mChild.Value().mEvents.WasPassed()) {
+    auto& entries = aOptions.mChild.Value().mEvents.Value().Entries();
+    proto->mChild.mEvents.SetCapacity(entries.Length());
+
+    for (auto& entry : entries) {
+      // We don't support the mOnce field, as it doesn't work well in this
+      // environment. For now, throw an error in that case.
+      if (entry.mValue.mOnce) {
+        aRv.ThrowNotSupportedError("mOnce is not supported");
+        return nullptr;
+      }
+
+      // Add the EventDecl to our list of events.
+      EventDecl* evt = proto->mChild.mEvents.AppendElement();
+      evt->mName = entry.mKey;
+      evt->mFlags.mCapture = entry.mValue.mCapture;
+      evt->mFlags.mInSystemGroup = entry.mValue.mMozSystemGroup;
+      evt->mFlags.mAllowUntrustedEvents =
+          entry.mValue.mWantUntrusted.WasPassed()
+              ? entry.mValue.mWantUntrusted.Value()
+              : false;
+      if (entry.mValue.mPassive.WasPassed()) {
+        evt->mPassive.Construct(entry.mValue.mPassive.Value());
+      }
+      evt->mCreateActor = entry.mValue.mCreateActor;
+    }
+  }
+
+  return proto.forget();
+}
+
+/**
+ * This listener only listens for events for the child side of the protocol.
+ * This will work in both content and parent processes.
+ */
+NS_IMETHODIMP JSWindowActorProtocol::HandleEvent(Event* aEvent) {
+  MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
+
+  // Determine which inner window we're associated with, and get its
+  // WindowGlobalChild actor.
+  EventTarget* target = aEvent->GetOriginalTarget();
+  if (NS_WARN_IF(!target)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsPIDOMWindowInner> inner =
+      do_QueryInterface(target->GetOwnerGlobal());
+  if (NS_WARN_IF(!inner)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  RefPtr<WindowGlobalChild> wgc = inner->GetWindowGlobalChild();
+  if (NS_WARN_IF(!wgc)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (aEvent->ShouldIgnoreChromeEventTargetListener()) {
+    return NS_OK;
+  }
+
+  // Ensure our actor is present.
+  RefPtr<JSActor> actor = wgc->GetExistingActor(mName);
+  if (!actor) {
+    // Check if we're supposed to create the actor when this event is fired.
+    bool createActor = true;
+    nsAutoString typeStr;
+    aEvent->GetType(typeStr);
+    for (auto& event : mChild.mEvents) {
+      if (event.mName == typeStr) {
+        createActor = event.mCreateActor;
+        break;
+      }
+    }
+
+    // If we're supposed to create the actor, call GetActor to cause it to be
+    // created.
+    if (createActor) {
+      AutoJSAPI jsapi;
+      jsapi.Init();
+      actor = wgc->GetActor(jsapi.cx(), mName, IgnoreErrors());
+    }
+  }
+  if (!actor || NS_WARN_IF(!actor->GetWrapperPreserveColor())) {
+    return NS_OK;
+  }
+
+  // Build our event listener & call it.
+  JS::Rooted<JSObject*> global(RootingCx(),
+                               JS::GetNonCCWObjectGlobal(actor->GetWrapper()));
+  RefPtr<EventListener> eventListener =
+      new EventListener(actor->GetWrapper(), global, nullptr, nullptr);
+  eventListener->HandleEvent(*aEvent, "JSWindowActorProtocol::HandleEvent");
+  return NS_OK;
+}
+
+NS_IMETHODIMP JSWindowActorProtocol::Observe(nsISupports* aSubject,
+                                             const char* aTopic,
+                                             const char16_t* aData) {
+  MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
+
+  nsCOMPtr<nsPIDOMWindowInner> inner = do_QueryInterface(aSubject);
+  RefPtr<WindowGlobalChild> wgc;
+
+  if (!inner) {
+    nsCOMPtr<nsPIDOMWindowOuter> outer = do_QueryInterface(aSubject);
+    if (NS_WARN_IF(!outer)) {
+      nsContentUtils::LogSimpleConsoleError(
+          NS_ConvertUTF8toUTF16(nsPrintfCString(
+              "JSWindowActor %s: expected window subject for topic '%s'.",
+              mName.get(), aTopic)),
+          "JSActor"_ns,
+          /* aFromPrivateWindow */ false,
+          /* aFromChromeContext */ true);
+      return NS_ERROR_FAILURE;
+    }
+    if (NS_WARN_IF(!outer->GetCurrentInnerWindow())) {
+      return NS_ERROR_FAILURE;
+    }
+    wgc = outer->GetCurrentInnerWindow()->GetWindowGlobalChild();
+  } else {
+    wgc = inner->GetWindowGlobalChild();
+  }
+
+  if (NS_WARN_IF(!wgc)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Ensure our actor is present.
+  AutoJSAPI jsapi;
+  jsapi.Init();
+  RefPtr<JSActor> actor = wgc->GetActor(jsapi.cx(), mName, IgnoreErrors());
+  if (!actor || NS_WARN_IF(!actor->GetWrapperPreserveColor())) {
+    return NS_OK;
+  }
+
+  // Build a observer callback.
+  JS::Rooted<JSObject*> global(jsapi.cx(),
+                               JS::GetNonCCWObjectGlobal(actor->GetWrapper()));
+  RefPtr<MozObserverCallback> observerCallback =
+      new MozObserverCallback(actor->GetWrapper(), global, nullptr, nullptr);
+  observerCallback->Observe(aSubject, nsDependentCString(aTopic),
+                            aData ? nsDependentString(aData) : VoidString());
+  return NS_OK;
+}
+
+void JSWindowActorProtocol::RegisterListenersFor(EventTarget* aTarget) {
+  EventListenerManager* elm = aTarget->GetOrCreateListenerManager();
+
+  for (auto& event : mChild.mEvents) {
+    elm->AddEventListenerByType(EventListenerHolder(this), event.mName,
+                                event.mFlags, event.mPassive);
+  }
+}
+
+void JSWindowActorProtocol::UnregisterListenersFor(EventTarget* aTarget) {
+  EventListenerManager* elm = aTarget->GetOrCreateListenerManager();
+
+  for (auto& event : mChild.mEvents) {
+    elm->RemoveEventListenerByType(EventListenerHolder(this), event.mName,
+                                   event.mFlags);
+  }
+}
+
+void JSWindowActorProtocol::AddObservers() {
+  nsCOMPtr<nsIObserverService> os = services::GetObserverService();
+  for (auto& topic : mChild.mObservers) {
+    // This makes the observer service hold an owning reference to the
+    // JSWindowActorProtocol. The JSWindowActorProtocol objects will be living
+    // for the full lifetime of the content process, thus the extra strong
+    // referencec doesn't have a negative impact.
+    os->AddObserver(this, topic.get(), false);
+  }
+}
+
+void JSWindowActorProtocol::RemoveObservers() {
+  nsCOMPtr<nsIObserverService> os = services::GetObserverService();
+  for (auto& topic : mChild.mObservers) {
+    os->RemoveObserver(this, topic.get());
+  }
+}
+
+extensions::MatchPatternSetCore* JSWindowActorProtocol::GetURIMatcher() {
+  // If we've already created the pattern set, return it.
+  if (mURIMatcher || mMatches.IsEmpty()) {
+    return mURIMatcher;
+  }
+
+  nsTArray<RefPtr<extensions::MatchPatternCore>> patterns(mMatches.Length());
+  for (const nsString& pattern : mMatches) {
+    patterns.AppendElement(new extensions::MatchPatternCore(
+        pattern, false, false, IgnoreErrors()));
+  }
+  mURIMatcher = new extensions::MatchPatternSetCore(std::move(patterns));
+  return mURIMatcher;
+}
+
+bool JSWindowActorProtocol::RemoteTypePrefixMatches(
+    const nsDependentCSubstring& aRemoteType) {
+  for (auto& remoteType : mRemoteTypes) {
+    if (StringBeginsWith(aRemoteType, remoteType)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool JSWindowActorProtocol::MessageManagerGroupMatches(
+    BrowsingContext* aBrowsingContext) {
+  BrowsingContext* top = aBrowsingContext->Top();
+  for (auto& group : mMessageManagerGroups) {
+    if (group == top->GetMessageManagerGroup()) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool JSWindowActorProtocol::Matches(BrowsingContext* aBrowsingContext,
+                                    nsIURI* aURI, const nsACString& aRemoteType,
+                                    ErrorResult& aRv) {
+  MOZ_ASSERT(aBrowsingContext, "DocShell without a BrowsingContext!");
+  MOZ_ASSERT(aURI, "Must have URI!");
+
+  if (!mAllFrames && aBrowsingContext->GetParent()) {
+    aRv.ThrowNotSupportedError(nsPrintfCString(
+        "Window protocol '%s' doesn't match subframes", mName.get()));
+    return false;
+  }
+
+  if (!mIncludeChrome && !aBrowsingContext->IsContent()) {
+    aRv.ThrowNotSupportedError(nsPrintfCString(
+        "Window protocol '%s' doesn't match chrome browsing contexts",
+        mName.get()));
+    return false;
+  }
+
+  if (!mRemoteTypes.IsEmpty() &&
+      !RemoteTypePrefixMatches(RemoteTypePrefix(aRemoteType))) {
+    aRv.ThrowNotSupportedError(
+        nsPrintfCString("Window protocol '%s' doesn't match remote type '%s'",
+                        mName.get(), PromiseFlatCString(aRemoteType).get()));
+    return false;
+  }
+
+  if (!mMessageManagerGroups.IsEmpty() &&
+      !MessageManagerGroupMatches(aBrowsingContext)) {
+    aRv.ThrowNotSupportedError(nsPrintfCString(
+        "Window protocol '%s' doesn't match message manager group",
+        mName.get()));
+    return false;
+  }
+
+  if (extensions::MatchPatternSetCore* uriMatcher = GetURIMatcher()) {
+    if (!uriMatcher->Matches(aURI)) {
+      aRv.ThrowNotSupportedError(nsPrintfCString(
+          "Window protocol '%s' doesn't match uri %s", mName.get(),
+          nsContentUtils::TruncatedURLForDisplay(aURI).get()));
+      return false;
+    }
+  }
+
+  return true;
+}
+
+}  // namespace mozilla::dom