1 files changed, 174 insertions, 0 deletions
diff --git a/dom/ipc/WindowGlobalActor.cpp b/dom/ipc/WindowGlobalActor.cpp
new file mode 100644
index 0000000000..93dd6f19a2
--- /dev/null
+++ b/dom/ipc/WindowGlobalActor.cpp
@@ -0,0 +1,174 @@
+/* -*- 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/WindowGlobalActor.h"
+
+#include "AutoplayPolicy.h"
+#include "nsContentUtils.h"
+#include "mozilla/Components.h"
+#include "mozilla/ContentBlockingAllowList.h"
+#include "mozilla/Logging.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/JSActorService.h"
+#include "mozilla/dom/JSWindowActorParent.h"
+#include "mozilla/dom/JSWindowActorChild.h"
+#include "mozilla/dom/JSWindowActorProtocol.h"
+#include "mozilla/dom/PopupBlocker.h"
+#include "mozilla/net/CookieJarSettings.h"
+#include "mozilla/dom/WindowGlobalChild.h"
+#include "mozilla/dom/WindowGlobalParent.h"
+
+#include "nsGlobalWindowInner.h"
+#include "nsNetUtil.h"
+
+namespace mozilla::dom {
+
+// CORPP 3.1.3 https://mikewest.github.io/corpp/#integration-html
+static nsILoadInfo::CrossOriginEmbedderPolicy InheritedPolicy(
+    dom::BrowsingContext* aBrowsingContext) {
+  WindowContext* inherit = aBrowsingContext->GetParentWindowContext();
+  if (inherit) {
+    return inherit->GetEmbedderPolicy();
+  }
+
+  return nsILoadInfo::EMBEDDER_POLICY_NULL;
+}
+
+// Common WindowGlobalInit creation code used by both `AboutBlankInitializer`
+// and `WindowInitializer`.
+WindowGlobalInit WindowGlobalActor::BaseInitializer(
+    dom::BrowsingContext* aBrowsingContext, uint64_t aInnerWindowId,
+    uint64_t aOuterWindowId) {
+  MOZ_DIAGNOSTIC_ASSERT(aBrowsingContext);
+
+  WindowGlobalInit init;
+  auto& ctx = init.context();
+  ctx.mInnerWindowId = aInnerWindowId;
+  ctx.mOuterWindowId = aOuterWindowId;
+  ctx.mBrowsingContextId = aBrowsingContext->Id();
+
+  // If any synced fields need to be initialized from our BrowsingContext, we
+  // can initialize them here.
+  auto& fields = ctx.mFields;
+  fields.mEmbedderPolicy = InheritedPolicy(aBrowsingContext);
+  fields.mAutoplayPermission = nsIPermissionManager::UNKNOWN_ACTION;
+  fields.mAllowJavascript = true;
+  return init;
+}
+
+WindowGlobalInit WindowGlobalActor::AboutBlankInitializer(
+    dom::BrowsingContext* aBrowsingContext, nsIPrincipal* aPrincipal) {
+  WindowGlobalInit init =
+      BaseInitializer(aBrowsingContext, nsContentUtils::GenerateWindowId(),
+                      nsContentUtils::GenerateWindowId());
+
+  init.principal() = aPrincipal;
+  init.storagePrincipal() = aPrincipal;
+  Unused << NS_NewURI(getter_AddRefs(init.documentURI()), "about:blank");
+  init.isInitialDocument() = true;
+
+  return init;
+}
+
+WindowGlobalInit WindowGlobalActor::WindowInitializer(
+    nsGlobalWindowInner* aWindow) {
+  WindowGlobalInit init =
+      BaseInitializer(aWindow->GetBrowsingContext(), aWindow->WindowID(),
+                      aWindow->GetOuterWindow()->WindowID());
+
+  init.principal() = aWindow->GetPrincipal();
+  init.storagePrincipal() = aWindow->GetEffectiveStoragePrincipal();
+  init.documentURI() = aWindow->GetDocumentURI();
+
+  Document* doc = aWindow->GetDocument();
+
+  init.isInitialDocument() = doc->IsInitialDocument();
+  init.blockAllMixedContent() = doc->GetBlockAllMixedContent(false);
+  init.upgradeInsecureRequests() = doc->GetUpgradeInsecureRequests(false);
+  init.sandboxFlags() = doc->GetSandboxFlags();
+  net::CookieJarSettings::Cast(doc->CookieJarSettings())
+      ->Serialize(init.cookieJarSettings());
+  init.httpsOnlyStatus() = doc->HttpsOnlyStatus();
+
+  auto& fields = init.context().mFields;
+  fields.mCookieBehavior = Some(doc->CookieJarSettings()->GetCookieBehavior());
+  fields.mIsOnContentBlockingAllowList =
+      doc->CookieJarSettings()->GetIsOnContentBlockingAllowList();
+  fields.mIsThirdPartyWindow = doc->HasThirdPartyChannel();
+  fields.mIsThirdPartyTrackingResourceWindow =
+      nsContentUtils::IsThirdPartyTrackingResourceWindow(aWindow);
+  fields.mIsSecureContext = aWindow->IsSecureContext();
+
+  // Initialze permission fields
+  fields.mAutoplayPermission =
+      media::AutoplayPolicy::GetSiteAutoplayPermission(init.principal());
+  fields.mPopupPermission = PopupBlocker::GetPopupPermission(init.principal());
+
+  // Initialize top level permission fields
+  if (aWindow->GetBrowsingContext()->IsTop()) {
+    fields.mAllowMixedContent = [&] {
+      uint32_t permit = nsIPermissionManager::UNKNOWN_ACTION;
+      nsCOMPtr<nsIPermissionManager> permissionManager =
+          components::PermissionManager::Service();
+
+      if (permissionManager) {
+        permissionManager->TestPermissionFromPrincipal(
+            init.principal(), "mixed-content"_ns, &permit);
+      }
+
+      return permit == nsIPermissionManager::ALLOW_ACTION;
+    }();
+
+    fields.mShortcutsPermission =
+        nsGlobalWindowInner::GetShortcutsPermission(init.principal());
+  }
+
+  if (auto policy = doc->GetEmbedderPolicy()) {
+    fields.mEmbedderPolicy = *policy;
+  }
+
+  // Init Mixed Content Fields
+  nsCOMPtr<nsIURI> innerDocURI = NS_GetInnermostURI(doc->GetDocumentURI());
+  fields.mIsSecure = innerDocURI && innerDocURI->SchemeIs("https");
+
+  nsCOMPtr<nsITransportSecurityInfo> securityInfo;
+  if (nsCOMPtr<nsIChannel> channel = doc->GetChannel()) {
+    nsCOMPtr<nsILoadInfo> loadInfo(channel->LoadInfo());
+    fields.mIsOriginalFrameSource = loadInfo->GetOriginalFrameSrcLoad();
+
+    channel->GetSecurityInfo(getter_AddRefs(securityInfo));
+  }
+  init.securityInfo() = securityInfo;
+
+  fields.mIsLocalIP = init.principal()->GetIsLocalIpAddress();
+
+  // Most data here is specific to the Document, which can change without
+  // creating a new WindowGlobal. Anything new added here which fits that
+  // description should also be synchronized in
+  // WindowGlobalChild::OnNewDocument.
+  return init;
+}
+
+already_AddRefed<JSActorProtocol> WindowGlobalActor::MatchingJSActorProtocol(
+    JSActorService* aActorSvc, const nsACString& aName, ErrorResult& aRv) {
+  RefPtr<JSWindowActorProtocol> proto =
+      aActorSvc->GetJSWindowActorProtocol(aName);
+  if (!proto) {
+    aRv.ThrowNotFoundError(nsPrintfCString("No such JSWindowActor '%s'",
+                                           PromiseFlatCString(aName).get()));
+    return nullptr;
+  }
+
+  if (!proto->Matches(BrowsingContext(), GetDocumentURI(), GetRemoteType(),
+                      aRv)) {
+    MOZ_ASSERT(aRv.Failed());
+    return nullptr;
+  }
+  MOZ_ASSERT(!aRv.Failed());
+  return proto.forget();
+}
+
+}  // namespace mozilla::dom