Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/C/Firefox/dom/base/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 79 kB

Quelle ChromeUtils.cpp Sprache: C

/* -*- 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 "ChromeUtils.h"

#include "JSOracleParent.h"
#include "ThirdPartyUtil.h"
#include "js/CallAndConstruct.h"  // JS::Call
#include "js/ColumnNumber.h"  // JS::TaggedColumnNumberOneOrigin, JS::ColumnNumberOneOrigin
#include "js/CharacterEncoding.h"
#include "js/Date.h"                // JS::IsISOStyleDate
#include "js/Object.h"              // JS::GetClass
#include "js/PropertyAndElement.h"  // JS_DefineProperty, JS_DefinePropertyById, JS_Enumerate, JS_GetProperty, JS_GetPropertyById, JS_SetProperty, JS_SetPropertyById, JS::IdVector
#include "js/PropertyDescriptor.h"  // JS::PropertyDescriptor, JS_GetOwnPropertyDescriptorById
#include "js/SavedFrameAPI.h"
#include "js/Value.h"  // JS::Value, JS::StringValue
#include "jsfriendapi.h"
#include "WrapperFactory.h"

#include "mozilla/Base64.h"
#include "mozilla/CycleCollectedJSRuntime.h"
#include "mozilla/ErrorNames.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/FormAutofillNative.h"
#include "mozilla/IntentionalCrash.h"
#include "mozilla/PerfStats.h"
#include "mozilla/Preferences.h"
#include "mozilla/ProcInfo.h"
#include "mozilla/ResultExtensions.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/ScrollingMetrics.h"
#include "mozilla/SharedStyleSheetCache.h"
#include "mozilla/dom/SharedScriptCache.h"
#include "mozilla/SpinEventLoopUntil.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/IdleDeadline.h"
#include "mozilla/dom/InProcessParent.h"
#include "mozilla/dom/JSActorService.h"
#include "mozilla/dom/MediaSessionBinding.h"
#include "mozilla/dom/PBrowserParent.h"
#include "mozilla/dom/Performance.h"
#include "mozilla/dom/PopupBlocker.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/quota/QuotaManager.h"
#include "mozilla/dom/Record.h"
#include "mozilla/dom/ReportingHeader.h"
#include "mozilla/dom/UnionTypes.h"
#include "mozilla/dom/WindowBinding.h"  // For IdleRequestCallback/Options
#include "mozilla/dom/WindowGlobalParent.h"
#include "mozilla/dom/WorkerScope.h"
#include "mozilla/ipc/GeckoChildProcessHost.h"
#include "mozilla/ipc/UtilityProcessSandboxing.h"
#include "mozilla/ipc/UtilityProcessManager.h"
#include "mozilla/ipc/UtilityProcessHost.h"
#include "mozilla/net/UrlClassifierFeatureFactory.h"
#include "mozilla/RemoteDecoderManagerChild.h"
#include "mozilla/KeySystemConfig.h"
#include "mozilla/WheelHandlingHelper.h"
#include "nsIRFPTargetSetIDL.h"
#include "nsContentSecurityUtils.h"
#include "nsString.h"
#include "nsNativeTheme.h"
#include "nsThreadUtils.h"
#include "mozJSModuleLoader.h"
#include "mozilla/ProfilerLabels.h"
#include "mozilla/ProfilerMarkers.h"
#include "nsDocShell.h"
#include "nsIException.h"
#include "VsyncSource.h"

#ifdef XP_UNIX
#  include <errno.h>
#  include <unistd.h>
#  include <fcntl.h>
#  include <poll.h>
#  include <sys/wait.h>

#  ifdef XP_LINUX
#    include <sys/prctl.h>
#  endif
#endif

#ifdef MOZ_WMF_CDM
#  include "mozilla/MFCDMParent.h"
#endif

namespace mozilla::dom {

// Setup logging
extern mozilla::LazyLogModule gMlsLog;

/* static */
void ChromeUtils::NondeterministicGetWeakMapKeys(
    GlobalObject& aGlobal, JS::Handle<JS::Value> aMap,
    JS::MutableHandle<JS::Value> aRetval, ErrorResult& aRv) {
  if (!aMap.isObject()) {
    aRetval.setUndefined();
  } else {
    JSContext* cx = aGlobal.Context();
    JS::Rooted<JSObject*> objRet(cx);
    JS::Rooted<JSObject*> mapObj(cx, &aMap.toObject());
    if (!JS_NondeterministicGetWeakMapKeys(cx, mapObj, &objRet)) {
      aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
    } else {
      aRetval.set(objRet ? JS::ObjectValue(*objRet) : JS::UndefinedValue());
    }
  }
}

/* static */
void ChromeUtils::NondeterministicGetWeakSetKeys(
    GlobalObject& aGlobal, JS::Handle<JS::Value> aSet,
    JS::MutableHandle<JS::Value> aRetval, ErrorResult& aRv) {
  if (!aSet.isObject()) {
    aRetval.setUndefined();
  } else {
    JSContext* cx = aGlobal.Context();
    JS::Rooted<JSObject*> objRet(cx);
    JS::Rooted<JSObject*> setObj(cx, &aSet.toObject());
    if (!JS_NondeterministicGetWeakSetKeys(cx, setObj, &objRet)) {
      aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
    } else {
      aRetval.set(objRet ? JS::ObjectValue(*objRet) : JS::UndefinedValue());
    }
  }
}

/* static */
void ChromeUtils::Base64URLEncode(GlobalObject& aGlobal,
                                  const ArrayBufferViewOrArrayBuffer& aSource,
                                  const Base64URLEncodeOptions& aOptions,
                                  nsACString& aResult, ErrorResult& aRv) {
  auto paddingPolicy = aOptions.mPad ? Base64URLEncodePaddingPolicy::Include
                                     : Base64URLEncodePaddingPolicy::Omit;
  ProcessTypedArrays(
      aSource, [&](const Span<uint8_t>& aData, JS::AutoCheckCannotGC&&) {
        nsresult rv = mozilla::Base64URLEncode(aData.Length(), aData.Elements(),
                                               paddingPolicy, aResult);
        if (NS_WARN_IF(NS_FAILED(rv))) {
          aResult.Truncate();
          aRv.Throw(rv);
        }
      });
}

/* static */
void ChromeUtils::Base64URLDecode(GlobalObject& aGlobal,
                                  const nsACString& aString,
                                  const Base64URLDecodeOptions& aOptions,
                                  JS::MutableHandle<JSObject*> aRetval,
                                  ErrorResult& aRv) {
  Base64URLDecodePaddingPolicy paddingPolicy;
  switch (aOptions.mPadding) {
    case Base64URLDecodePadding::Require:
      paddingPolicy = Base64URLDecodePaddingPolicy::Require;
      break;

    case Base64URLDecodePadding::Ignore:
      paddingPolicy = Base64URLDecodePaddingPolicy::Ignore;
      break;

    case Base64URLDecodePadding::Reject:
      paddingPolicy = Base64URLDecodePaddingPolicy::Reject;
      break;

    default:
      aRv.Throw(NS_ERROR_INVALID_ARG);
      return;
  }
  FallibleTArray<uint8_t> data;
  nsresult rv = mozilla::Base64URLDecode(aString, paddingPolicy, data);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    aRv.Throw(rv);
    return;
  }

  JS::Rooted<JSObject*> buffer(
      aGlobal.Context(), ArrayBuffer::Create(aGlobal.Context(), data, aRv));
  if (aRv.Failed()) {
    return;
  }
  aRetval.set(buffer);
}

/* static */
void ChromeUtils::ReleaseAssert(GlobalObject& aGlobal, bool aCondition,
                                const nsAString& aMessage) {
  // If the condition didn't fail, which is the likely case, immediately return.
  if (MOZ_LIKELY(aCondition)) {
    return;
  }

  // Extract the current stack from the JS runtime to embed in the crash reason.
  nsAutoCString filename;
  uint32_t lineNo = 0;

  if (nsCOMPtr<nsIStackFrame> location = GetCurrentJSStack(1)) {
    location->GetFilename(aGlobal.Context(), filename);
    lineNo = location->GetLineNumber(aGlobal.Context());
  } else {
    filename.Assign(""_ns);
  }

  // Convert to utf-8 for adding as the MozCrashReason.
  NS_ConvertUTF16toUTF8 messageUtf8(aMessage);

  // Actually crash.
  MOZ_CRASH_UNSAFE_PRINTF("Failed ChromeUtils.releaseAssert(\"%s\") @ %s:%u",
                          messageUtf8.get(), filename.get(), lineNo);
}

/* static */
void ChromeUtils::AddProfilerMarker(
    GlobalObject& aGlobal, const nsACString& aName,
    const ProfilerMarkerOptionsOrDouble& aOptions,
    const Optional<nsACString>& aText) {
  if (!profiler_thread_is_being_profiled_for_markers()) {
    return;
  }

  MarkerOptions options;

  MarkerCategory category = ::geckoprofiler::category::JS;

  DOMHighResTimeStamp startTime = 0;
  uint64_t innerWindowId = 0;
  if (aOptions.IsDouble()) {
    startTime = aOptions.GetAsDouble();
  } else {
    const ProfilerMarkerOptions& opt = aOptions.GetAsProfilerMarkerOptions();
    startTime = opt.mStartTime;
    innerWindowId = opt.mInnerWindowId;

    if (opt.mCaptureStack) {
      // If we will be capturing a stack, change the category of the
      // ChromeUtils.addProfilerMarker label automatically added by the webidl
      // binding from DOM to PROFILER so that this function doesn't appear in
      // the marker stack.
      JSContext* cx = aGlobal.Context();
      ProfilingStack* stack = js::GetContextProfilingStackIfEnabled(cx);
      if (MOZ_LIKELY(stack)) {
        uint32_t sp = stack->stackPointer;
        if (MOZ_LIKELY(sp > 0)) {
          js::ProfilingStackFrame& frame = stack->frames[sp - 1];
          if (frame.isLabelFrame() && "ChromeUtils"_ns.Equals(frame.label()) &&
              "addProfilerMarker"_ns.Equals(frame.dynamicString())) {
            frame.setLabelCategory(JS::ProfilingCategoryPair::PROFILER);
          }
        }
      }

      options.Set(MarkerStack::Capture());
    }
#define BEGIN_CATEGORY(name, labelAsString, color) \
  if (opt.mCategory.Equals(labelAsString)) {       \
    category = ::geckoprofiler::category::name;    \
  } else
#define SUBCATEGORY(supercategory, name, labelAsString)
#define END_CATEGORY
    MOZ_PROFILING_CATEGORY_LIST(BEGIN_CATEGORY, SUBCATEGORY, END_CATEGORY)
#undef BEGIN_CATEGORY
#undef SUBCATEGORY
#undef END_CATEGORY
    {
      category = ::geckoprofiler::category::OTHER;
    }
  }
  if (startTime) {
    RefPtr<Performance> performance;

    if (NS_IsMainThread()) {
      nsCOMPtr<nsPIDOMWindowInner> ownerWindow =
          do_QueryInterface(aGlobal.GetAsSupports());
      if (ownerWindow) {
        performance = ownerWindow->GetPerformance();
      }
    } else {
      JSContext* cx = aGlobal.Context();
      WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
      if (workerPrivate) {
        performance = workerPrivate->GlobalScope()->GetPerformance();
      }
    }

    if (performance) {
      options.Set(MarkerTiming::IntervalUntilNowFrom(
          performance->CreationTimeStamp() +
          TimeDuration::FromMilliseconds(startTime)));
    } else {
      options.Set(MarkerTiming::IntervalUntilNowFrom(
          TimeStamp::ProcessCreation() +
          TimeDuration::FromMilliseconds(startTime)));
    }
  }

  if (innerWindowId) {
    options.Set(MarkerInnerWindowId(innerWindowId));
  } else {
    options.Set(MarkerInnerWindowIdFromJSContext(aGlobal.Context()));
  }

  {
    AUTO_PROFILER_STATS(ChromeUtils_AddProfilerMarker);
    if (aText.WasPassed()) {
      profiler_add_marker(aName, category, std::move(options),
                          ::geckoprofiler::markers::TextMarker{},
                          aText.Value());
    } else {
      profiler_add_marker(aName, category, std::move(options));
    }
  }
}

/* static */
void ChromeUtils::GetXPCOMErrorName(GlobalObject& aGlobal, uint32_t aErrorCode,
                                    nsACString& aRetval) {
  GetErrorName((nsresult)aErrorCode, aRetval);
}

/* static */
void ChromeUtils::WaiveXrays(GlobalObject& aGlobal, JS::Handle<JS::Value> aVal,
                             JS::MutableHandle<JS::Value> aRetval,
                             ErrorResult& aRv) {
  JS::Rooted<JS::Value> value(aGlobal.Context(), aVal);
  if (!xpc::WrapperFactory::WaiveXrayAndWrap(aGlobal.Context(), &value)) {
    aRv.NoteJSContextException(aGlobal.Context());
  } else {
    aRetval.set(value);
  }
}

/* static */
void ChromeUtils::UnwaiveXrays(GlobalObject& aGlobal,
                               JS::Handle<JS::Value> aVal,
                               JS::MutableHandle<JS::Value> aRetval,
                               ErrorResult& aRv) {
  if (!aVal.isObject()) {
    aRetval.set(aVal);
    return;
  }

  JS::Rooted<JSObject*> obj(aGlobal.Context(),
                            js::UncheckedUnwrap(&aVal.toObject()));
  if (!JS_WrapObject(aGlobal.Context(), &obj)) {
    aRv.NoteJSContextException(aGlobal.Context());
  } else {
    aRetval.setObject(*obj);
  }
}

/* static */
void ChromeUtils::GetClassName(GlobalObject& aGlobal,
                               JS::Handle<JSObject*> aObj, bool aUnwrap,
                               nsAString& aRetval) {
  JS::Rooted<JSObject*> obj(aGlobal.Context(), aObj);
  if (aUnwrap) {
    obj = js::UncheckedUnwrap(obj, /* stopAtWindowProxy = */ false);
  }

  aRetval = NS_ConvertUTF8toUTF16(nsDependentCString(JS::GetClass(obj)->name));
}

/* static */
bool ChromeUtils::IsDOMObject(GlobalObject& aGlobal, JS::Handle<JSObject*> aObj,
                              bool aUnwrap) {
  JS::Rooted<JSObject*> obj(aGlobal.Context(), aObj);
  if (aUnwrap) {
    obj = js::UncheckedUnwrap(obj, /* stopAtWindowProxy = */ false);
  }

  return mozilla::dom::IsDOMObject(obj);
}

/* static */
bool ChromeUtils::IsISOStyleDate(GlobalObject& aGlobal,
                                 const nsACString& aStr) {
  // aStr is a UTF-8 string, however we can cast to JS::Latin1Chars
  // because JS::IsISOStyleDate handles ASCII only
  return JS::IsISOStyleDate(aGlobal.Context(),
                            JS::Latin1Chars(aStr.Data(), aStr.Length()));
}

/* static */
void ChromeUtils::ShallowClone(GlobalObject& aGlobal,
                               JS::Handle<JSObject*> aObj,
                               JS::Handle<JSObject*> aTarget,
                               JS::MutableHandle<JSObject*> aRetval,
                               ErrorResult& aRv) {
  JSContext* cx = aGlobal.Context();

  auto cleanup = MakeScopeExit([&]() { aRv.NoteJSContextException(cx); });

  JS::Rooted<JS::IdVector> ids(cx, JS::IdVector(cx));
  JS::RootedVector<JS::Value> values(cx);
  JS::RootedVector<jsid> valuesIds(cx);

  {
    // cx represents our current Realm, so it makes sense to use it for the
    // CheckedUnwrapDynamic call.  We do want CheckedUnwrapDynamic, in case
    // someone is shallow-cloning a Window.
    JS::Rooted<JSObject*> obj(cx, js::CheckedUnwrapDynamic(aObj, cx));
    if (!obj) {
      js::ReportAccessDenied(cx);
      return;
    }

    if (js::IsScriptedProxy(obj)) {
      JS_ReportErrorASCII(cx, "Shallow cloning a proxy object is not allowed");
      return;
    }

    JSAutoRealm ar(cx, obj);

    if (!JS_Enumerate(cx, obj, &ids) || !values.reserve(ids.length()) ||
        !valuesIds.reserve(ids.length())) {
      return;
    }

    JS::Rooted<Maybe<JS::PropertyDescriptor>> desc(cx);
    JS::Rooted<JS::PropertyKey> id(cx);
    for (jsid idVal : ids) {
      id = idVal;
      if (!JS_GetOwnPropertyDescriptorById(cx, obj, id, &desc)) {
        continue;
      }
      if (desc.isNothing() || desc->isAccessorDescriptor()) {
        continue;
      }
      valuesIds.infallibleAppend(id);
      values.infallibleAppend(desc->value());
    }
  }

  JS::Rooted<JSObject*> obj(cx);
  {
    Maybe<JSAutoRealm> ar;
    if (aTarget) {
      // Our target could be anything, so we want CheckedUnwrapDynamic here.
      // "cx" represents the current Realm when we were called from bindings, so
      // we can just use that.
      JS::Rooted<JSObject*> target(cx, js::CheckedUnwrapDynamic(aTarget, cx));
      if (!target) {
        js::ReportAccessDenied(cx);
        return;
      }
      ar.emplace(cx, target);
    }

    obj = JS_NewPlainObject(cx);
    if (!obj) {
      return;
    }

    JS::Rooted<JS::Value> value(cx);
    JS::Rooted<JS::PropertyKey> id(cx);
    for (uint32_t i = 0; i < valuesIds.length(); i++) {
      id = valuesIds[i];
      value = values[i];

      JS_MarkCrossZoneId(cx, id);
      if (!JS_WrapValue(cx, &value) ||
          !JS_SetPropertyById(cx, obj, id, value)) {
        return;
      }
    }
  }

  if (aTarget && !JS_WrapObject(cx, &obj)) {
    return;
  }

  cleanup.release();
  aRetval.set(obj);
}

namespace {
class IdleDispatchRunnable final : public IdleRunnable,
                                   public nsITimerCallback {
public:
  NS_DECL_ISUPPORTS_INHERITED

  IdleDispatchRunnable(nsIGlobalObject* aParent, IdleRequestCallback& aCallback)
      : IdleRunnable("ChromeUtils::IdleDispatch"),
        mCallback(&aCallback),
        mParent(aParent) {}

  // MOZ_CAN_RUN_SCRIPT_BOUNDARY until Runnable::Run is MOZ_CAN_RUN_SCRIPT.
  // See bug 1535398.
  MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
    if (mCallback) {
      CancelTimer();

      auto deadline = mDeadline - TimeStamp::ProcessCreation();

      ErrorResult rv;
      RefPtr<IdleDeadline> idleDeadline =
          new IdleDeadline(mParent, mTimedOut, deadline.ToMilliseconds());

      RefPtr<IdleRequestCallback> callback(std::move(mCallback));
      MOZ_ASSERT(!mCallback);
      callback->Call(*idleDeadline, "ChromeUtils::IdleDispatch handler");
      mParent = nullptr;
    }
    return NS_OK;
  }

  void SetDeadline(TimeStamp aDeadline) override { mDeadline = aDeadline; }

  NS_IMETHOD Notify(nsITimer* aTimer) override {
    mTimedOut = true;
    SetDeadline(TimeStamp::Now());
    return Run();
  }

  void SetTimer(uint32_t aDelay, nsIEventTarget* aTarget) override {
    MOZ_ASSERT(aTarget);
    MOZ_ASSERT(!mTimer);
    NS_NewTimerWithCallback(getter_AddRefs(mTimer), this, aDelay,
                            nsITimer::TYPE_ONE_SHOT, aTarget);
  }

protected:
  virtual ~IdleDispatchRunnable() { CancelTimer(); }

private:
  void CancelTimer() {
    if (mTimer) {
      mTimer->Cancel();
      mTimer = nullptr;
    }
  }

  RefPtr<IdleRequestCallback> mCallback;
  nsCOMPtr<nsIGlobalObject> mParent;

  nsCOMPtr<nsITimer> mTimer;

  TimeStamp mDeadline{};
  bool mTimedOut = false;
};

NS_IMPL_ISUPPORTS_INHERITED(IdleDispatchRunnable, IdleRunnable,
                            nsITimerCallback)
}  // anonymous namespace

/* static */
void ChromeUtils::IdleDispatch(const GlobalObject& aGlobal,
                               IdleRequestCallback& aCallback,
                               const IdleRequestOptions& aOptions,
                               ErrorResult& aRv) {
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
  MOZ_ASSERT(global);

  auto runnable = MakeRefPtr<IdleDispatchRunnable>(global, aCallback);

  if (aOptions.mTimeout.WasPassed()) {
    aRv = NS_DispatchToCurrentThreadQueue(
        runnable.forget(), aOptions.mTimeout.Value(), EventQueuePriority::Idle);
  } else {
    aRv = NS_DispatchToCurrentThreadQueue(runnable.forget(),
                                          EventQueuePriority::Idle);
  }
}

static mozJSModuleLoader* GetModuleLoaderForCurrentGlobal(
    JSContext* aCx, const GlobalObject& aGlobal,
    Maybe<loader::NonSharedGlobalSyncModuleLoaderScope>&
        aMaybeSyncLoaderScope) {
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());

  if (mozJSModuleLoader::IsSharedSystemGlobal(global)) {
    return mozJSModuleLoader::Get();
  }
  if (mozJSModuleLoader::IsDevToolsLoaderGlobal(global)) {
    return mozJSModuleLoader::GetOrCreateDevToolsLoader(aCx);
  }

  if (loader::NonSharedGlobalSyncModuleLoaderScope::IsActive()) {
    mozJSModuleLoader* moduleloader =
        loader::NonSharedGlobalSyncModuleLoaderScope::ActiveLoader();

    if (!moduleloader->IsLoaderGlobal(global->GetGlobalJSObject())) {
      JS_ReportErrorASCII(aCx,
                          "global: \"current\" option cannot be used for "
                          "different global while other importESModule "
                          "with global: \"current\" is on the stack");
      return nullptr;
    }

    return moduleloader;
  }

  RefPtr targetModuleLoader = global->GetModuleLoader(aCx);
  if (!targetModuleLoader) {
    // Sandbox without associated window returns nullptr for GetModuleLoader.
    JS_ReportErrorASCII(aCx, "No ModuleLoader found for the current context");
    return nullptr;
  }

  if (targetModuleLoader->HasFetchingModules()) {
    if (!NS_IsMainThread()) {
      JS_ReportErrorASCII(aCx,
                          "ChromeUtils.importESModule cannot be used in worker "
                          "when there is ongoing dynamic import");
      return nullptr;
    }

    if (!mozilla::SpinEventLoopUntil(
            "importESModule for current global"_ns, [&]() -> bool {
              return !targetModuleLoader->HasFetchingModules();
            })) {
      JS_ReportErrorASCII(aCx, "Failed to wait for ongoing module requests");
      return nullptr;
    }
  }

  aMaybeSyncLoaderScope.emplace(aCx, global);
  return aMaybeSyncLoaderScope->ActiveLoader();
}

static mozJSModuleLoader* GetModuleLoaderForOptions(
    JSContext* aCx, const GlobalObject& aGlobal,
    const ImportESModuleOptionsDictionary& aOptions,
    Maybe<loader::NonSharedGlobalSyncModuleLoaderScope>&
        aMaybeSyncLoaderScope) {
  if (!aOptions.mGlobal.WasPassed()) {
    return mozJSModuleLoader::Get();
  }

  switch (aOptions.mGlobal.Value()) {
    case ImportESModuleTargetGlobal::Shared:
      return mozJSModuleLoader::Get();

    case ImportESModuleTargetGlobal::Devtools:
      return mozJSModuleLoader::GetOrCreateDevToolsLoader(aCx);

    case ImportESModuleTargetGlobal::Contextual: {
      if (!NS_IsMainThread()) {
        return GetModuleLoaderForCurrentGlobal(aCx, aGlobal,
                                               aMaybeSyncLoaderScope);
      }

      RefPtr devToolsModuleloader = mozJSModuleLoader::GetDevToolsLoader();
      if (devToolsModuleloader &&
          devToolsModuleloader->IsLoaderGlobal(aGlobal.Get())) {
        return mozJSModuleLoader::GetOrCreateDevToolsLoader(aCx);
      }
      return mozJSModuleLoader::Get();
    }

    case ImportESModuleTargetGlobal::Current:
      return GetModuleLoaderForCurrentGlobal(aCx, aGlobal,
                                             aMaybeSyncLoaderScope);

    default:
      MOZ_CRASH("Unknown ImportESModuleTargetGlobal");
  }
}

static bool ValidateImportOptions(
    JSContext* aCx, const GlobalObject& aGlobal,
    const ImportESModuleOptionsDictionary& aOptions) {
  if (!NS_IsMainThread() &&
      (!aOptions.mGlobal.WasPassed() ||
       (aOptions.mGlobal.Value() != ImportESModuleTargetGlobal::Current &&
        aOptions.mGlobal.Value() != ImportESModuleTargetGlobal::Contextual))) {
    JS_ReportErrorASCII(aCx,
                        "ChromeUtils.importESModule: Only { global: "
                        "\"current\" } and { global: \"contextual\" } options "
                        "are supported on worker");
    return false;
  }

  if (NS_IsMainThread()) {
    nsCOMPtr<nsIGlobalObject> global =
        do_QueryInterface(aGlobal.GetAsSupports());

    if (mozJSModuleLoader::IsDevToolsLoaderGlobal(global) &&
        !aOptions.mGlobal.WasPassed()) {
      JS_ReportErrorASCII(aCx,
                          "ChromeUtils.importESModule: global option is "
                          "required in DevTools distinct global");
      return false;
    }
  }

  return true;
}

/* static */
void ChromeUtils::ImportESModule(
    const GlobalObject& aGlobal, const nsAString& aResourceURI,
    const ImportESModuleOptionsDictionary& aOptions,
    JS::MutableHandle<JSObject*> aRetval, ErrorResult& aRv) {
  JSContext* cx = aGlobal.Context();

  if (!ValidateImportOptions(cx, aGlobal, aOptions)) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  Maybe<loader::NonSharedGlobalSyncModuleLoaderScope> maybeSyncLoaderScope;
  RefPtr<mozJSModuleLoader> moduleloader =
      GetModuleLoaderForOptions(cx, aGlobal, aOptions, maybeSyncLoaderScope);
  if (!moduleloader) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  NS_ConvertUTF16toUTF8 registryLocation(aResourceURI);

  AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING_NONSENSITIVE(
      "ChromeUtils::ImportESModule", OTHER, registryLocation);

  JS::Rooted<JSObject*> moduleNamespace(cx);
  nsresult rv =
      moduleloader->ImportESModule(cx, registryLocation, &moduleNamespace);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return;
  }

  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  if (!JS_WrapObject(cx, &moduleNamespace)) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }
  aRetval.set(moduleNamespace);

  if (maybeSyncLoaderScope) {
    maybeSyncLoaderScope->Finish();
  }
}

// An integer encoding for ImportESModuleOptionsDictionary, to pass the value
// to the lazy getters.
class EncodedOptions {
public:
  explicit EncodedOptions(const ImportESModuleOptionsDictionary& aOptions) {
    if (aOptions.mGlobal.WasPassed()) {
      mValue = uint32_t(aOptions.mGlobal.Value()) + 1;
    } else {
      mValue = 0;
    }
  }

  explicit EncodedOptions(uint32_t aValue) : mValue(aValue) {}

  int32_t toInt32() const { return int32_t(mValue); }

  void DecodeInto(ImportESModuleOptionsDictionary& aOptions) {
    if (mValue == 0) {
      aOptions.mGlobal.Reset();
    } else {
      aOptions.mGlobal.Construct(ImportESModuleTargetGlobal(mValue - 1));
    }
  }

private:
  uint32_t mValue = 0;
};

namespace lazy_getter {

// The property id of the getter.
// Used by all lazy getters.
static const size_t SLOT_ID = 0;

// The URI of the module to import.
// Used by ChromeUtils.defineESModuleGetters.
static const size_t SLOT_URI = 1;

// An array object that contians values for PARAM_INDEX_TARGET and
// PARAM_INDEX_LAMBDA.
// Used by ChromeUtils.defineLazyGetter.
static const size_t SLOT_PARAMS = 1;

// The EncodedOptions value.
// Used by ChromeUtils.defineESModuleGetters.
static const size_t SLOT_OPTIONS = 2;

static const size_t PARAM_INDEX_TARGET = 0;
static const size_t PARAM_INDEX_LAMBDA = 1;
static const size_t PARAMS_COUNT = 2;

static bool ExtractArgs(JSContext* aCx, JS::CallArgs& aArgs,
                        JS::MutableHandle<JSObject*> aCallee,
                        JS::MutableHandle<JSObject*> aThisObj,
                        JS::MutableHandle<jsid> aId) {
  aCallee.set(&aArgs.callee());

  JS::Handle<JS::Value> thisv = aArgs.thisv();
  if (!thisv.isObject()) {
    JS_ReportErrorASCII(aCx, "Invalid target object");
    return false;
  }

  aThisObj.set(&thisv.toObject());

  JS::Rooted<JS::Value> id(aCx,
                           js::GetFunctionNativeReserved(aCallee, SLOT_ID));
  MOZ_ALWAYS_TRUE(JS_ValueToId(aCx, id, aId));
  return true;
}

static bool JSLazyGetter(JSContext* aCx, unsigned aArgc, JS::Value* aVp) {
  JS::CallArgs args = JS::CallArgsFromVp(aArgc, aVp);

  JS::Rooted<JSObject*> callee(aCx);
  JS::Rooted<JSObject*> unused(aCx);
  JS::Rooted<jsid> id(aCx);
  if (!ExtractArgs(aCx, args, &callee, &unused, &id)) {
    return false;
  }

  JS::Rooted<JS::Value> paramsVal(
      aCx, js::GetFunctionNativeReserved(callee, SLOT_PARAMS));
  if (paramsVal.isUndefined()) {
    args.rval().setUndefined();
    return true;
  }
  // Avoid calling the lambda multiple times, in case of:
  //   * the getter function is retrieved from property descriptor and called
  //   * the lambda gets the property again
  //   * the getter function throws and accessed again
  js::SetFunctionNativeReserved(callee, SLOT_PARAMS, JS::UndefinedHandleValue);

  JS::Rooted<JSObject*> paramsObj(aCx, ¶msVal.toObject());

  JS::Rooted<JS::Value> targetVal(aCx);
  JS::Rooted<JS::Value> lambdaVal(aCx);
  if (!JS_GetElement(aCx, paramsObj, PARAM_INDEX_TARGET, &targetVal)) {
    return false;
  }
  if (!JS_GetElement(aCx, paramsObj, PARAM_INDEX_LAMBDA, &lambdaVal)) {
    return false;
  }

  JS::Rooted<JSObject*> targetObj(aCx, &targetVal.toObject());

  JS::Rooted<JS::Value> value(aCx);
  if (!JS::Call(aCx, targetObj, lambdaVal, JS::HandleValueArray::empty(),
                &value)) {
    return false;
  }

  if (!JS_DefinePropertyById(aCx, targetObj, id, value, JSPROP_ENUMERATE)) {
    return false;
  }

  args.rval().set(value);
  return true;
}

static bool DefineLazyGetter(JSContext* aCx, JS::Handle<JSObject*> aTarget,
                             JS::Handle<JS::Value> aName,
                             JS::Handle<JSObject*> aLambda) {
  JS::Rooted<JS::PropertyKey> id(aCx);
  if (!JS_ValueToId(aCx, aName, &id)) {
    return false;
  }

  JS::Rooted<JS::PropertyKey> funId(aCx);
  if (id.isAtom()) {
    funId = id;
  } else {
    // Don't care int and symbol cases.
    funId = JS::PropertyKey::NonIntAtom(JS_GetEmptyString(aCx));
  }

  JS::Rooted<JSObject*> getter(
      aCx, JS_GetFunctionObject(js::NewFunctionByIdWithReserved(
               aCx, JSLazyGetter, 0, 0, funId)));
  if (!getter) {
    JS_ReportOutOfMemory(aCx);
    return false;
  }

  JS::RootedVector<JS::Value> params(aCx);
  if (!params.resize(PARAMS_COUNT)) {
    return false;
  }
  params[PARAM_INDEX_TARGET].setObject(*aTarget);
  params[PARAM_INDEX_LAMBDA].setObject(*aLambda);
  JS::Rooted<JSObject*> paramsObj(aCx, JS::NewArrayObject(aCx, params));
  if (!paramsObj) {
    return false;
  }

  js::SetFunctionNativeReserved(getter, SLOT_ID, aName);
  js::SetFunctionNativeReserved(getter, SLOT_PARAMS,
                                JS::ObjectValue(*paramsObj));

  return JS_DefinePropertyById(aCx, aTarget, id, getter, nullptr,
                               JSPROP_ENUMERATE);
}

static bool ESModuleGetter(JSContext* aCx, unsigned aArgc, JS::Value* aVp) {
  JS::CallArgs args = JS::CallArgsFromVp(aArgc, aVp);

  JS::Rooted<JSObject*> callee(aCx);
  JS::Rooted<JSObject*> thisObj(aCx);
  JS::Rooted<jsid> id(aCx);
  if (!ExtractArgs(aCx, args, &callee, &thisObj, &id)) {
    return false;
  }

  JS::Rooted<JSString*> moduleURI(
      aCx, js::GetFunctionNativeReserved(callee, SLOT_URI).toString());
  JS::UniqueChars bytes = JS_EncodeStringToUTF8(aCx, moduleURI);
  if (!bytes) {
    return false;
  }
  nsDependentCString uri(bytes.get());

  JS::Rooted<JS::Value> value(aCx);
  EncodedOptions encodedOptions(
      js::GetFunctionNativeReserved(callee, SLOT_OPTIONS).toInt32());

  ImportESModuleOptionsDictionary options;
  encodedOptions.DecodeInto(options);

  GlobalObject global(aCx, callee);

  Maybe<loader::NonSharedGlobalSyncModuleLoaderScope> maybeSyncLoaderScope;
  RefPtr<mozJSModuleLoader> moduleloader =
      GetModuleLoaderForOptions(aCx, global, options, maybeSyncLoaderScope);
  if (!moduleloader) {
    return false;
  }

  JS::Rooted<JSObject*> moduleNamespace(aCx);
  nsresult rv = moduleloader->ImportESModule(aCx, uri, &moduleNamespace);
  if (NS_FAILED(rv)) {
    Throw(aCx, rv);
    return false;
  }

  // ESM's namespace is from the module's realm.
  {
    JSAutoRealm ar(aCx, moduleNamespace);
    if (!JS_GetPropertyById(aCx, moduleNamespace, id, &value)) {
      return false;
    }
  }
  if (!JS_WrapValue(aCx, &value)) {
    return false;
  }

  if (maybeSyncLoaderScope) {
    maybeSyncLoaderScope->Finish();
  }

  if (!JS_DefinePropertyById(aCx, thisObj, id, value, JSPROP_ENUMERATE)) {
    return false;
  }

  args.rval().set(value);
  return true;
}

static bool ESModuleSetter(JSContext* aCx, unsigned aArgc, JS::Value* aVp) {
  JS::CallArgs args = JS::CallArgsFromVp(aArgc, aVp);

  JS::Rooted<JSObject*> callee(aCx);
  JS::Rooted<JSObject*> thisObj(aCx);
  JS::Rooted<jsid> id(aCx);
  if (!ExtractArgs(aCx, args, &callee, &thisObj, &id)) {
    return false;
  }

  return JS_DefinePropertyById(aCx, thisObj, id, args.get(0), JSPROP_ENUMERATE);
}

static bool DefineESModuleGetter(JSContext* aCx, JS::Handle<JSObject*> aTarget,
                                 JS::Handle<JS::PropertyKey> aId,
                                 JS::Handle<JS::Value> aResourceURI,
                                 const EncodedOptions& encodedOptions) {
  JS::Rooted<JS::Value> idVal(aCx, JS::StringValue(aId.toString()));

  JS::Rooted<JS::Value> optionsVal(aCx,
                                   JS::Int32Value(encodedOptions.toInt32()));

  JS::Rooted<JSObject*> getter(
      aCx, JS_GetFunctionObject(js::NewFunctionByIdWithReserved(
               aCx, ESModuleGetter, 0, 0, aId)));

  JS::Rooted<JSObject*> setter(
      aCx, JS_GetFunctionObject(js::NewFunctionByIdWithReserved(
               aCx, ESModuleSetter, 0, 0, aId)));

  if (!getter || !setter) {
    JS_ReportOutOfMemory(aCx);
    return false;
  }

  js::SetFunctionNativeReserved(getter, SLOT_ID, idVal);
  js::SetFunctionNativeReserved(setter, SLOT_ID, idVal);

  js::SetFunctionNativeReserved(getter, SLOT_URI, aResourceURI);

  js::SetFunctionNativeReserved(getter, SLOT_OPTIONS, optionsVal);

  return JS_DefinePropertyById(aCx, aTarget, aId, getter, setter,
                               JSPROP_ENUMERATE);
}

}  // namespace lazy_getter

/* static */
void ChromeUtils::DefineLazyGetter(const GlobalObject& aGlobal,
                                   JS::Handle<JSObject*> aTarget,
                                   JS::Handle<JS::Value> aName,
                                   JS::Handle<JSObject*> aLambda,
                                   ErrorResult& aRv) {
  JSContext* cx = aGlobal.Context();
  if (!lazy_getter::DefineLazyGetter(cx, aTarget, aName, aLambda)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}

/* static */
void ChromeUtils::DefineESModuleGetters(
    const GlobalObject& global, JS::Handle<JSObject*> target,
    JS::Handle<JSObject*> modules,
    const ImportESModuleOptionsDictionary& aOptions, ErrorResult& aRv) {
  JSContext* cx = global.Context();

  JS::Rooted<JS::IdVector> props(cx, JS::IdVector(cx));
  if (!JS_Enumerate(cx, modules, &props)) {
    aRv.NoteJSContextException(cx);
    return;
  }

  if (!ValidateImportOptions(cx, global, aOptions)) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  EncodedOptions encodedOptions(aOptions);

  JS::Rooted<JS::PropertyKey> prop(cx);
  JS::Rooted<JS::Value> resourceURIVal(cx);
  for (JS::PropertyKey tmp : props) {
    prop = tmp;

    if (!prop.isString()) {
      aRv.Throw(NS_ERROR_FAILURE);
      return;
    }

    if (!JS_GetPropertyById(cx, modules, prop, &resourceURIVal)) {
      aRv.NoteJSContextException(cx);
      return;
    }

    if (!lazy_getter::DefineESModuleGetter(cx, target, prop, resourceURIVal,
                                           encodedOptions)) {
      aRv.NoteJSContextException(cx);
      return;
    }
  }
}

#ifdef XP_UNIX
/* static */
void ChromeUtils::GetLibcConstants(const GlobalObject&,
                                   LibcConstants& aConsts) {
  aConsts.mEPERM.Construct(EPERM);
  aConsts.mEINTR.Construct(EINTR);
  aConsts.mEACCES.Construct(EACCES);
  aConsts.mEAGAIN.Construct(EAGAIN);
  aConsts.mEINVAL.Construct(EINVAL);
  aConsts.mENOSYS.Construct(ENOSYS);

  aConsts.mF_SETFD.Construct(F_SETFD);
  aConsts.mF_SETFL.Construct(F_SETFL);

  aConsts.mFD_CLOEXEC.Construct(FD_CLOEXEC);

  aConsts.mAT_EACCESS.Construct(AT_EACCESS);

  aConsts.mO_CREAT.Construct(O_CREAT);
  aConsts.mO_NONBLOCK.Construct(O_NONBLOCK);
  aConsts.mO_WRONLY.Construct(O_WRONLY);

  aConsts.mPOLLERR.Construct(POLLERR);
  aConsts.mPOLLHUP.Construct(POLLHUP);
  aConsts.mPOLLIN.Construct(POLLIN);
  aConsts.mPOLLNVAL.Construct(POLLNVAL);
  aConsts.mPOLLOUT.Construct(POLLOUT);

  aConsts.mWNOHANG.Construct(WNOHANG);

#  ifdef XP_LINUX
  aConsts.mPR_CAPBSET_READ.Construct(PR_CAPBSET_READ);
#  endif
}
#endif

/* static */
void ChromeUtils::OriginAttributesToSuffix(
    dom::GlobalObject& aGlobal, const dom::OriginAttributesDictionary& aAttrs,
    nsCString& aSuffix)

{
  OriginAttributes attrs(aAttrs);
  attrs.CreateSuffix(aSuffix);
}

/* static */
bool ChromeUtils::OriginAttributesMatchPattern(
    dom::GlobalObject& aGlobal, const dom::OriginAttributesDictionary& aAttrs,
    const dom::OriginAttributesPatternDictionary& aPattern) {
  OriginAttributes attrs(aAttrs);
  OriginAttributesPattern pattern(aPattern);
  return pattern.Matches(attrs);
}

/* static */
void ChromeUtils::CreateOriginAttributesFromOrigin(
    dom::GlobalObject& aGlobal, const nsAString& aOrigin,
    dom::OriginAttributesDictionary& aAttrs, ErrorResult& aRv) {
  OriginAttributes attrs;
  nsAutoCString suffix;
  if (!attrs.PopulateFromOrigin(NS_ConvertUTF16toUTF8(aOrigin), suffix)) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }
  aAttrs = attrs;
}

/* static */
void ChromeUtils::CreateOriginAttributesFromOriginSuffix(
    dom::GlobalObject& aGlobal, const nsAString& aSuffix,
    dom::OriginAttributesDictionary& aAttrs, ErrorResult& aRv) {
  OriginAttributes attrs;
  nsAutoCString suffix;
  if (!attrs.PopulateFromSuffix(NS_ConvertUTF16toUTF8(aSuffix))) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }
  aAttrs = attrs;
}

/* static */
void ChromeUtils::FillNonDefaultOriginAttributes(
    dom::GlobalObject& aGlobal, const dom::OriginAttributesDictionary& aAttrs,
    dom::OriginAttributesDictionary& aNewAttrs) {
  aNewAttrs = aAttrs;
}

/* static */
bool ChromeUtils::IsOriginAttributesEqual(
    dom::GlobalObject& aGlobal, const dom::OriginAttributesDictionary& aA,
    const dom::OriginAttributesDictionary& aB) {
  return IsOriginAttributesEqual(aA, aB);
}

/* static */
bool ChromeUtils::IsOriginAttributesEqual(
    const dom::OriginAttributesDictionary& aA,
    const dom::OriginAttributesDictionary& aB) {
  return aA == aB;
}

/* static */
void ChromeUtils::GetBaseDomainFromPartitionKey(dom::GlobalObject& aGlobal,
                                                const nsAString& aPartitionKey,
                                                nsAString& aBaseDomain,
                                                ErrorResult& aRv) {
  nsString scheme;
  nsString pkBaseDomain;
  int32_t port;
  bool ancestor;

  if (!mozilla::OriginAttributes::ParsePartitionKey(
          aPartitionKey, scheme, pkBaseDomain, port, ancestor)) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  aBaseDomain = pkBaseDomain;
}

/* static */
void ChromeUtils::GetPartitionKeyFromURL(dom::GlobalObject& aGlobal,
                                         const nsAString& aTopLevelUrl,
                                         const nsAString& aSubresourceUrl,
                                         const Optional<bool>& aForeignContext,
                                         nsAString& aPartitionKey,
                                         ErrorResult& aRv) {
  nsCOMPtr<nsIURI> topLevelURI;
  nsresult rv = NS_NewURI(getter_AddRefs(topLevelURI), aTopLevelUrl);
  if (NS_SUCCEEDED(rv) && topLevelURI->SchemeIs("chrome")) {
    rv = NS_ERROR_FAILURE;
  }
  if (NS_WARN_IF(NS_FAILED(rv))) {
    aPartitionKey.Truncate();
    aRv.Throw(rv);
    return;
  }

  bool foreignResource;
  bool fallback = false;
  if (!aSubresourceUrl.IsEmpty()) {
    nsCOMPtr<nsIURI> resourceURI;
    rv = NS_NewURI(getter_AddRefs(resourceURI), aSubresourceUrl);
    if (NS_WARN_IF(NS_FAILED(rv))) {
      aPartitionKey.Truncate();
      aRv.Throw(rv);
      return;
    }

    ThirdPartyUtil* thirdPartyUtil = ThirdPartyUtil::GetInstance();
    if (!thirdPartyUtil) {
      aPartitionKey.Truncate();
      aRv.Throw(NS_ERROR_SERVICE_NOT_AVAILABLE);
      return;
    }

    rv = thirdPartyUtil->IsThirdPartyURI(topLevelURI, resourceURI,
                                         &foreignResource);
    if (NS_FAILED(rv)) {
      // we fallback to assuming the resource is foreign if there is an error
      foreignResource = true;
      fallback = true;
    }
  } else {
    // Assume we have a foreign resource if the resource was not provided
    foreignResource = true;
    fallback = true;
  }

  // aForeignContext is whether or not this is a foreign context.
  // foreignResource is whether or not the resource is cross-site to the top
  // level. So we need to validate that a false foreign context doesn't have a
  // same-site resource. That is impossible!
  if (aForeignContext.WasPassed() && !aForeignContext.Value() &&
      foreignResource && !fallback) {
    aPartitionKey.Truncate();
    aRv.Throw(nsresult::NS_ERROR_INVALID_ARG);
    return;
  }

  bool foreignByAncestorContext = aForeignContext.WasPassed() &&
                                  aForeignContext.Value() && !foreignResource;
  mozilla::OriginAttributes attrs;
  attrs.SetPartitionKey(topLevelURI, foreignByAncestorContext);
  aPartitionKey = attrs.mPartitionKey;
}

#ifdef NIGHTLY_BUILD
/* static */
void ChromeUtils::GetRecentJSDevError(GlobalObject& aGlobal,
                                      JS::MutableHandle<JS::Value> aRetval,
                                      ErrorResult& aRv) {
  aRetval.setUndefined();
  auto runtime = CycleCollectedJSRuntime::Get();
  MOZ_ASSERT(runtime);

  auto cx = aGlobal.Context();
  if (!runtime->GetRecentDevError(cx, aRetval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}

/* static */
void ChromeUtils::ClearRecentJSDevError(GlobalObject&) {
  auto runtime = CycleCollectedJSRuntime::Get();
  MOZ_ASSERT(runtime);

  runtime->ClearRecentDevError();
}
#endif  // NIGHTLY_BUILD

void ChromeUtils::ClearStyleSheetCacheByPrincipal(GlobalObject&,
                                                  nsIPrincipal* aForPrincipal) {
  SharedStyleSheetCache::Clear(Some(aForPrincipal));
}

void ChromeUtils::ClearStyleSheetCacheBySite(
    GlobalObject&, const nsACString& aSchemelessSite,
    const dom::OriginAttributesPatternDictionary& aPattern) {
  SharedStyleSheetCache::Clear(Nothing(), Some(nsCString(aSchemelessSite)),
                               Some(OriginAttributesPattern(aPattern)));
}

void ChromeUtils::ClearStyleSheetCache(GlobalObject&) {
  SharedStyleSheetCache::Clear();
}

void ChromeUtils::ClearMessagingLayerSecurityStateByPrincipal(
    GlobalObject&, nsIPrincipal* aPrincipal, ErrorResult& aRv) {
  MOZ_LOG(gMlsLog, LogLevel::Debug,
          ("ClearMessagingLayerSecurityStateByPrincipal"));

  if (NS_WARN_IF(!aPrincipal)) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Principal is null"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Get the profile directory
  nsCOMPtr<nsIFile> file;
  aRv = NS_GetSpecialDirectory("ProfD", getter_AddRefs(file));
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Failed to get profile directory"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Append the 'mls' directory
  aRv = file->AppendNative("mls"_ns);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to append 'mls' to directory path"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  bool exists;
  aRv = file->Exists(&exists);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to check if 'mls' directory exists"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // If the 'mls' directory does not exist, we exit early
  if (!exists) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("'mls' directory does not exist"));
    return;
  }

  // Get the storage origin key
  nsAutoCString originKey;
  aRv = aPrincipal->GetStorageOriginKey(originKey);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Failed to get storage origin key"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Get the origin attributes suffix
  nsAutoCString originAttrSuffix;
  aRv = aPrincipal->GetOriginSuffix(originAttrSuffix);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to get origin attributes suffix"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Construct the full origin key
  nsAutoCString fullOriginKey = originKey + originAttrSuffix;

  // We append the full origin key to the file path
  aRv = file->AppendNative(fullOriginKey);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to append full origin key to the file path"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Remove the directory recursively
  aRv = file->Remove(/* recursive */ true);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to remove : %s", file->HumanReadablePath().get()));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  MOZ_LOG(gMlsLog, LogLevel::Debug,
          ("Successfully cleared MLS state for principal"));
}

void ChromeUtils::ClearMessagingLayerSecurityStateBySite(
    GlobalObject&, const nsACString& aSchemelessSite,
    const dom::OriginAttributesPatternDictionary& aPattern, ErrorResult& aRv) {
  MOZ_LOG(gMlsLog, LogLevel::Debug, ("ClearMessagingLayerSecurityStateBySite"));

  // Get the profile directory
  nsCOMPtr<nsIFile> file;
  aRv = NS_GetSpecialDirectory("ProfD", getter_AddRefs(file));
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Failed to get profile directory"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Append the 'mls' directory
  aRv = file->AppendNative("mls"_ns);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to append 'mls' to directory path"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  bool exists;
  aRv = file->Exists(&exists);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to check if 'mls' directory exists"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // If the 'mls' directory does not exist, we exit early
  if (!exists) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("'mls' directory does not exist"));
    return;
  }

  // Check if the schemeless site is empty
  if (NS_WARN_IF(aSchemelessSite.IsEmpty())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Schemeless site is empty"));
    aRv.Throw(NS_ERROR_INVALID_ARG);
    return;
  }

  // Site pattern
  OriginAttributesPattern pattern(aPattern);

  // Partition pattern
  // This pattern is used to (additionally) clear state partitioned under
  // aSchemelessSite.
  OriginAttributesPattern partitionPattern = pattern;
  partitionPattern.mPartitionKeyPattern.Construct();
  partitionPattern.mPartitionKeyPattern.Value().mBaseDomain.Construct(
      NS_ConvertUTF8toUTF16(aSchemelessSite));

  // Reverse the base domain using the existing function
  nsAutoCString targetReversedBaseDomain(aSchemelessSite);
  std::reverse(targetReversedBaseDomain.BeginWriting(),
               targetReversedBaseDomain.EndWriting());

  MOZ_LOG(gMlsLog, LogLevel::Debug,
          ("Reversed base domain: %s", targetReversedBaseDomain.get()));

  // Enumerate files in the 'mls' directory
  nsCOMPtr<nsIDirectoryEnumerator> dirEnum;
  aRv = file->GetDirectoryEntries(getter_AddRefs(dirEnum));
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to get directory entries in 'mls' directory"));
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Iterate through all entries in the directory
  nsCOMPtr<nsIFile> entry;
  while (NS_SUCCEEDED(dirEnum->GetNextFile(getter_AddRefs(entry))) && entry) {
    nsAutoCString entryName;
    aRv = entry->GetNativeLeafName(entryName);
    if (NS_WARN_IF(aRv.Failed())) {
      MOZ_LOG(gMlsLog, LogLevel::Error,
              ("Failed to get native leaf name for entry"));
      continue;
    }

    // Find the position of .sqlite.enc or .key in the entry name
    int32_t sqliteEncPos = entryName.RFind(".sqlite.enc");
    int32_t keyPos = entryName.RFind(".key");

    // Remove the .sqlite.enc or .key suffix from the entryName
    if (sqliteEncPos != kNotFound) {
      entryName.SetLength(sqliteEncPos);
    } else if (keyPos != kNotFound) {
      entryName.SetLength(keyPos);
    }

    // Decode the entry name
    nsAutoCString decodedEntryName;
    aRv = mozilla::Base64Decode(entryName, decodedEntryName);
    if (NS_WARN_IF(aRv.Failed())) {
      MOZ_LOG(gMlsLog, LogLevel::Debug,
              ("Failed to decode entry name: %s", entryName.get()));
      continue;
    }

    // Find the origin attributes suffix in the entry name by taking the
    // value of the entry name after the ^ separator
    int32_t separatorPos = decodedEntryName.FindChar('^');

    // We extract the origin attributes suffix from the entry name
    nsAutoCString originSuffix;
    originSuffix.Assign(Substring(decodedEntryName, separatorPos));

    // Populate the origin attributes from the suffix
    OriginAttributes originAttrs;
    if (NS_WARN_IF(!originAttrs.PopulateFromSuffix(originSuffix))) {
      MOZ_LOG(gMlsLog, LogLevel::Error,
              ("Failed to populate origin attributes from suffix"));
      continue;
    }

    // Check if the entry name starts with the reversed base domain
    if (StringBeginsWith(decodedEntryName, targetReversedBaseDomain)) {
      MOZ_LOG(gMlsLog, LogLevel::Debug,
              ("Entry file: %s", entry->HumanReadablePath().get()));

      // If there is a valid origin attributes suffix, we remove the entry
      // only if it matches.
      if (pattern.Matches(originAttrs)) {
        aRv = entry->Remove(/* recursive */ false);
        if (NS_WARN_IF(aRv.Failed())) {
          MOZ_LOG(gMlsLog, LogLevel::Error,
                  ("Failed to remove file: %s", decodedEntryName.get()));
        }
        MOZ_LOG(gMlsLog, LogLevel::Debug,
                ("Removed file: %s", decodedEntryName.get()));
      }
    }

    // If there is a valid origin attributes suffix, we remove the entry
    // only if it matches. We are checking for state partitioned under
    // aSchemelessSite.
    if (partitionPattern.Matches(originAttrs)) {
      aRv = entry->Remove(/* recursive */ false);
      if (NS_WARN_IF(aRv.Failed())) {
        MOZ_LOG(gMlsLog, LogLevel::Error,
                ("Failed to remove file: %s", decodedEntryName.get()));
      }
      MOZ_LOG(gMlsLog, LogLevel::Debug,
              ("Removed file: %s", decodedEntryName.get()));
    }
  }

  // Close the directory enumerator
  dirEnum->Close();
}

void ChromeUtils::ClearMessagingLayerSecurityState(GlobalObject&,
                                                   ErrorResult& aRv) {
  MOZ_LOG(gMlsLog, LogLevel::Debug, ("ClearMessagingLayerSecurityState"));

  // Get the profile directory
  nsCOMPtr<nsIFile> file;
  aRv = NS_GetSpecialDirectory("ProfD", getter_AddRefs(file));
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Failed to get profile directory"));
    return;
  }

  // Append the 'mls' directory
  aRv = file->AppendNative("mls"_ns);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error,
            ("Failed to append 'mls' to directory path"));
    return;
  }

  // Check if the directory exists
  bool exists;
  aRv = file->Exists(&exists);
  if (NS_WARN_IF(aRv.Failed() || !exists)) {
    MOZ_LOG(gMlsLog, LogLevel::Debug, ("'mls' directory does not exist"));
    return;
  }

  // Remove the MLS directory recursively
  aRv = file->Remove(/* recursive */ true);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Failed to remove MLS directory"));
    return;
  }

  // Log the directory path
  MOZ_LOG(gMlsLog, LogLevel::Debug,
          ("Deleted MLS directory: %s", file->HumanReadablePath().get()));

  // Recreate the MLS directory
  aRv = file->Create(nsIFile::DIRECTORY_TYPE, 0755);
  if (NS_WARN_IF(aRv.Failed())) {
    MOZ_LOG(gMlsLog, LogLevel::Error, ("Failed to recreate MLS directory"));
    return;
  }

  MOZ_LOG(gMlsLog, LogLevel::Debug, ("Successfully cleared all MLS state"));
}

void ChromeUtils::ClearScriptCacheByPrincipal(GlobalObject&,
                                              nsIPrincipal* aForPrincipal) {
  SharedScriptCache::Clear(Some(aForPrincipal));
}

void ChromeUtils::ClearScriptCacheBySite(
    GlobalObject&, const nsACString& aSchemelessSite,
    const dom::OriginAttributesPatternDictionary& aPattern) {
  SharedScriptCache::Clear(Nothing(), Some(nsCString(aSchemelessSite)),
                           Some(aPattern));
}

void ChromeUtils::ClearScriptCache(GlobalObject&) {
  SharedScriptCache::Clear();
}

#define PROCTYPE_TO_WEBIDL_CASE(_procType, _webidl) \
  case mozilla::ProcType::_procType:                \
    return WebIDLProcType::_webidl

static WebIDLProcType ProcTypeToWebIDL(mozilla::ProcType aType) {
  // Max is the value of the last enum, not the length, so add one.
  static_assert(
      static_cast<size_t>(MaxContiguousEnumValue<WebIDLProcType>::value) ==
          static_cast<size_t>(ProcType::Max),
      "In order for this static cast to be okay, "
      "WebIDLProcType must match ProcType exactly");

  // These must match the similar ones in E10SUtils.sys.mjs, RemoteTypes.h,
  // ProcInfo.h and ChromeUtils.webidl
  switch (aType) {
    PROCTYPE_TO_WEBIDL_CASE(Web, Web);
    PROCTYPE_TO_WEBIDL_CASE(WebIsolated, WebIsolated);
    PROCTYPE_TO_WEBIDL_CASE(File, File);
    PROCTYPE_TO_WEBIDL_CASE(Extension, Extension);
    PROCTYPE_TO_WEBIDL_CASE(PrivilegedAbout, Privilegedabout);
    PROCTYPE_TO_WEBIDL_CASE(PrivilegedMozilla, Privilegedmozilla);
    PROCTYPE_TO_WEBIDL_CASE(WebCOOPCOEP, WithCoopCoep);
    PROCTYPE_TO_WEBIDL_CASE(WebServiceWorker, WebServiceWorker);
    PROCTYPE_TO_WEBIDL_CASE(Inference, Inference);

#define GECKO_PROCESS_TYPE(enum_value, enum_name, string_name, proc_typename, \
                           process_bin_type, procinfo_typename,               \
                           webidl_typename, allcaps_name)                     \
  PROCTYPE_TO_WEBIDL_CASE(procinfo_typename, webidl_typename);
#define SKIP_PROCESS_TYPE_CONTENT
#ifndef MOZ_ENABLE_FORKSERVER
#  define SKIP_PROCESS_TYPE_FORKSERVER
#endif  // MOZ_ENABLE_FORKSERVER
#include "mozilla/GeckoProcessTypes.h"
#undef SKIP_PROCESS_TYPE_CONTENT
#ifndef MOZ_ENABLE_FORKSERVER
#  undef SKIP_PROCESS_TYPE_FORKSERVER
#endif  // MOZ_ENABLE_FORKSERVER
#undef GECKO_PROCESS_TYPE

    PROCTYPE_TO_WEBIDL_CASE(Preallocated, Preallocated);
    PROCTYPE_TO_WEBIDL_CASE(Unknown, Unknown);
  }

  MOZ_ASSERT(false, "Unhandled case in ProcTypeToWebIDL");
  return WebIDLProcType::Unknown;
}

#undef PROCTYPE_TO_WEBIDL_CASE

/* static */
already_AddRefed<Promise> ChromeUtils::RequestProcInfo(GlobalObject& aGlobal,
                                                       ErrorResult& aRv) {
  // This function will use IPDL to enable threads info on macOS
  // see https://bugzilla.mozilla.org/show_bug.cgi?id=1529023
  if (!XRE_IsParentProcess()) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }
  // Prepare the JS promise that will hold our response.
  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
  MOZ_ASSERT(global);
  RefPtr<Promise> domPromise = Promise::Create(global, aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }
  MOZ_ASSERT(domPromise);

  // Get a list of processes to examine and pre-fill them with available info.
  // Note that this is subject to race conditions: just because we have a
  // process in the list doesn't mean that the process will still be alive when
  // we attempt to get its information. Followup code MUST be able to fail
  // gracefully on some processes and still return whichever information is
  // available.

  // Get all the content parents.
  // Note that this array includes even the long dead content parents, so we
  // might have some garbage, especially with Fission.
  // SAFETY NOTE: `contentParents` is only valid if used synchronously.
  // Anything else and you may end up dealing with dangling pointers.
  nsTArray<ContentParent*> contentParents;
  ContentParent::GetAll(contentParents);

  // Prepare our background request.
  // We reserve one more slot for the browser process itself.
  nsTArray<ProcInfoRequest> requests(contentParents.Length() + 1);
  // Requesting process info for the browser process itself.
  requests.EmplaceBack(
      /* aPid = */ base::GetCurrentProcId(),
      /* aProcessType = */ ProcType::Browser,
      /* aOrigin = */ ""_ns,
      /* aWindowInfo = */ nsTArray<WindowInfo>(),
      /* aUtilityInfo = */ nsTArray<UtilityInfo>());

  // First handle non-ContentParent processes.
  mozilla::ipc::GeckoChildProcessHost::GetAll(
      [&requests](mozilla::ipc::GeckoChildProcessHost* aGeckoProcess) {
        base::ProcessId childPid = aGeckoProcess->GetChildProcessId();
        if (childPid == 0) {
          // Something went wrong with this process, it may be dead already,
          // fail gracefully.
          return;
        }
        mozilla::ProcType type = mozilla::ProcType::Unknown;

        switch (aGeckoProcess->GetProcessType()) {
          case GeckoProcessType::GeckoProcessType_Content: {
            // These processes are handled separately.
            return;
          }

#define GECKO_PROCESS_TYPE(enum_value, enum_name, string_name, proc_typename, \
                           process_bin_type, procinfo_typename,               \
                           webidl_typename, allcaps_name)                     \
  case GeckoProcessType::GeckoProcessType_##enum_name: {                      \
    type = mozilla::ProcType::procinfo_typename;                              \
    break;                                                                    \
  }
#define SKIP_PROCESS_TYPE_CONTENT
#ifndef MOZ_ENABLE_FORKSERVER
#  define SKIP_PROCESS_TYPE_FORKSERVER
#endif  // MOZ_ENABLE_FORKSERVER
#include "mozilla/GeckoProcessTypes.h"
#ifndef MOZ_ENABLE_FORKSERVER
#  undef SKIP_PROCESS_TYPE_FORKSERVER
#endif  // MOZ_ENABLE_FORKSERVER
#undef SKIP_PROCESS_TYPE_CONTENT
#undef GECKO_PROCESS_TYPE
          default:
            // Leave the default Unknown value in |type|.
            break;
        }

        // Attach utility actor information to the process.
        nsTArray<UtilityInfo> utilityActors;
        if (aGeckoProcess->GetProcessType() ==
            GeckoProcessType::GeckoProcessType_Utility) {
          RefPtr<mozilla::ipc::UtilityProcessManager> upm =
              mozilla::ipc::UtilityProcessManager::GetSingleton();
          if (!utilityActors.AppendElements(upm->GetActors(aGeckoProcess),
                                            fallible)) {
            NS_WARNING("Error adding actors");
            return;
          }
        }

        requests.EmplaceBack(
            /* aPid = */ childPid,
            /* aProcessType = */ type,
            /* aOrigin = */ ""_ns,
            /* aWindowInfo = */ nsTArray<WindowInfo>(),  // Without a
                                                         // ContentProcess, no
                                                         // DOM windows.
            /* aUtilityInfo = */ std::move(utilityActors),
            /* aChild = */ 0  // Without a ContentProcess, no ChildId.
#ifdef XP_DARWIN
            ,
            /* aChildTask = */ aGeckoProcess->GetChildTask()
#endif  // XP_DARWIN
        );
      });

  // Now handle ContentParents.
  for (const auto* contentParent : contentParents) {
    if (!contentParent || !contentParent->Process()) {
      // Presumably, the process is dead or dying.
      continue;
    }
    base::ProcessId pid = contentParent->Process()->GetChildProcessId();
    if (pid == 0) {
      // Presumably, the process is dead or dying.
      continue;
    }
    if (contentParent->Process()->GetProcessType() !=
        GeckoProcessType::GeckoProcessType_Content) {
      // We're probably racing against a process changing type.
      // We'll get it in the next call, skip it for the moment.
      continue;
    }

    // Since this code is executed synchronously on the main thread,
    // processes cannot die while we're in this loop.
    mozilla::ProcType type = mozilla::ProcType::Unknown;

    // Convert the remoteType into a ProcType.
    // Ideally, the remoteType should be strongly typed
    // upstream, this would make the conversion less brittle.
    const nsAutoCString remoteType(contentParent->GetRemoteType());
    if (StringBeginsWith(remoteType, FISSION_WEB_REMOTE_TYPE)) {
      // WARNING: Do not change the order, as
      // `DEFAULT_REMOTE_TYPE` is a prefix of
      // `FISSION_WEB_REMOTE_TYPE`.
      type = mozilla::ProcType::WebIsolated;
    } else if (StringBeginsWith(remoteType, SERVICEWORKER_REMOTE_TYPE)) {
      type = mozilla::ProcType::WebServiceWorker;
    } else if (StringBeginsWith(remoteType,
                                WITH_COOP_COEP_REMOTE_TYPE_PREFIX)) {
      type = mozilla::ProcType::WebCOOPCOEP;
    } else if (remoteType == FILE_REMOTE_TYPE) {
      type = mozilla::ProcType::File;
    } else if (remoteType == EXTENSION_REMOTE_TYPE) {
      type = mozilla::ProcType::Extension;
    } else if (remoteType == PRIVILEGEDABOUT_REMOTE_TYPE) {
      type = mozilla::ProcType::PrivilegedAbout;
    } else if (remoteType == PRIVILEGEDMOZILLA_REMOTE_TYPE) {
      type = mozilla::ProcType::PrivilegedMozilla;
    } else if (remoteType == PREALLOC_REMOTE_TYPE) {
      type = mozilla::ProcType::Preallocated;
    } else if (remoteType == INFERENCE_REMOTE_TYPE) {
      type = mozilla::ProcType::Inference;
    } else if (StringBeginsWith(remoteType, DEFAULT_REMOTE_TYPE)) {
      type = mozilla::ProcType::Web;
    } else {
      MOZ_CRASH_UNSAFE_PRINTF("Unknown remoteType '%s'", remoteType.get());
    }

    // By convention, everything after '=' is the origin.
    nsAutoCString origin;
    nsACString::const_iterator cursor;
    nsACString::const_iterator end;
    remoteType.BeginReading(cursor);
    remoteType.EndReading(end);
    if (FindCharInReadable('=', cursor, end)) {
      origin = Substring(++cursor, end);
    }

    // Attach DOM window information to the process.
    nsTArray<WindowInfo> windows;
    for (const auto& browserParentWrapperKey :
         contentParent->ManagedPBrowserParent()) {
      for (const auto& windowGlobalParentWrapperKey :
           browserParentWrapperKey->ManagedPWindowGlobalParent()) {
        // WindowGlobalParent is the only immediate subclass of
        // PWindowGlobalParent.
        auto* windowGlobalParent =
            static_cast<WindowGlobalParent*>(windowGlobalParentWrapperKey);

        nsString documentTitle;
        windowGlobalParent->GetDocumentTitle(documentTitle);
        WindowInfo* window = windows.EmplaceBack(
            fallible,
            /* aOuterWindowId = */ windowGlobalParent->OuterWindowId(),
            /* aDocumentURI = */ windowGlobalParent->GetDocumentURI(),
            /* aDocumentTitle = */ std::move(documentTitle),
            /* aIsProcessRoot = */ windowGlobalParent->IsProcessRoot(),
            /* aIsInProcess = */ windowGlobalParent->IsInProcess());
        if (!window) {
          aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
          return nullptr;
        }
      }
    }
    requests.EmplaceBack(
        /* aPid = */ pid,
        /* aProcessType = */ type,
        /* aOrigin = */ origin,
        /* aWindowInfo = */ std::move(windows),
        /* aUtilityInfo = */ nsTArray<UtilityInfo>(),
        /* aChild = */ contentParent->ChildID()
#ifdef XP_DARWIN
            ,
        /* aChildTask = */ contentParent->Process()->GetChildTask()
#endif  // XP_DARWIN
    );
  }

  // Now place background request.
  RefPtr<nsISerialEventTarget> target = global->SerialEventTarget();
  mozilla::GetProcInfo(std::move(requests))
      ->Then(
          target, __func__,
          [target,
           domPromise](const HashMap<base::ProcessId, ProcInfo>& aSysProcInfo) {
            ParentProcInfoDictionary parentInfo;
            if (aSysProcInfo.count() == 0) {
              // For some reason, we couldn't get *any* info.
              // Maybe a sandboxing issue?
              domPromise->MaybeReject(NS_ERROR_UNEXPECTED);
              return;
            }
            nsTArray<ChildProcInfoDictionary> childrenInfo(
                aSysProcInfo.count() - 1);
            for (auto iter = aSysProcInfo.iter(); !iter.done(); iter.next()) {
              const auto& sysProcInfo = iter.get().value();
              nsresult rv;
              if (sysProcInfo.type == ProcType::Browser) {
                rv = mozilla::CopySysProcInfoToDOM(sysProcInfo, &parentInfo);
                if (NS_FAILED(rv)) {
                  // Failing to copy? That's probably not something from we can
                  // (or should) try to recover gracefully.
                  domPromise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
                  return;
                }
                MOZ_ASSERT(sysProcInfo.childId == 0);
                MOZ_ASSERT(sysProcInfo.origin.IsEmpty());
              } else {
                mozilla::dom::ChildProcInfoDictionary* childInfo =
                    childrenInfo.AppendElement(fallible);
                if (!childInfo) {
                  domPromise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
                  return;
                }
                rv = mozilla::CopySysProcInfoToDOM(sysProcInfo, childInfo);
                if (NS_FAILED(rv)) {
                  domPromise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
                  return;
                }
                // Copy Firefox info.
                childInfo->mChildID = sysProcInfo.childId;
                childInfo->mOrigin = sysProcInfo.origin;
                childInfo->mType = ProcTypeToWebIDL(sysProcInfo.type);

                for (const auto& source : sysProcInfo.windows) {
                  auto* dest = childInfo->mWindows.AppendElement(fallible);
                  if (!dest) {
                    domPromise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
                    return;
                  }
                  dest->mOuterWindowId = source.outerWindowId;
                  dest->mDocumentURI = source.documentURI;
                  dest->mDocumentTitle = source.documentTitle;
                  dest->mIsProcessRoot = source.isProcessRoot;
                  dest->mIsInProcess = source.isInProcess;
                }

                if (sysProcInfo.type == ProcType::Utility) {
                  for (const auto& source : sysProcInfo.utilityActors) {
                    auto* dest =
                        childInfo->mUtilityActors.AppendElement(fallible);
                    if (!dest) {
                      domPromise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
                      return;
                    }

--> --------------------

--> maximum size reached

--> --------------------

quality97%

¤ Dauer der Verarbeitung: 0.23 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.