Quelle Console.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 "mozilla/dom/Console.h"
#include "mozilla/dom/ConsoleInstance.h"
#include "mozilla/dom/ConsoleBinding.h"
#include "ConsoleCommon.h"

#include "js/Array.h"               // JS::GetArrayLength, JS::NewArrayObject
#include "js/PropertyAndElement.h"  // JS_DefineElement, JS_DefineProperty, JS_GetElement
#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/BlobImpl.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/ElementBinding.h"
#include "mozilla/dom/Exceptions.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FunctionBinding.h"
#include "mozilla/dom/Performance.h"
#include "mozilla/dom/PromiseBinding.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/StructuredCloneHolder.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/WorkerRunnable.h"
#include "mozilla/dom/WorkerScope.h"
#include "mozilla/dom/WorkletGlobalScope.h"
#include "mozilla/dom/WorkletImpl.h"
#include "mozilla/dom/WorkletThread.h"
#include "mozilla/dom/RootedDictionary.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/JSObjectHolder.h"
#include "mozilla/Maybe.h"
#include "mozilla/Mutex.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_devtools.h"
#include "mozilla/StaticPrefs_dom.h"
#include "nsCycleCollectionParticipant.h"
#include "nsDOMNavigationTiming.h"
#include "nsGlobalWindowInner.h"
#include "nsJSUtils.h"
#include "nsNetUtil.h"
#include "xpcpublic.h"
#include "nsContentUtils.h"
#include "nsDocShell.h"
#include "nsProxyRelease.h"
#include "nsReadableUtils.h"

#include "nsIConsoleAPIStorage.h"
#include "nsIException.h"  // for nsIStackFrame
#include "nsIInterfaceRequestorUtils.h"
#include "nsILoadContext.h"
#include "nsISensitiveInfoHiddenURI.h"
#include "nsISupportsPrimitives.h"
#include "nsIWebNavigation.h"
#include "nsIXPConnect.h"

// The maximum allowed number of concurrent timers per page.
#define MAX_PAGE_TIMERS 10000

// The maximum allowed number of concurrent counters per page.
#define MAX_PAGE_COUNTERS 10000

// The maximum stacktrace depth when populating the stacktrace array used for
// console.trace().
#define DEFAULT_MAX_STACKTRACE_DEPTH 200

// This tags are used in the Structured Clone Algorithm to move js values from
// worker thread to main thread
#define CONSOLE_TAG_BLOB JS_SCTAG_USER_MIN

// This value is taken from ConsoleAPIStorage.js
#define STORAGE_MAX_EVENTS 1000

using namespace mozilla::dom::exceptions;

namespace mozilla::dom {

struct ConsoleStructuredCloneData {
  nsCOMPtr<nsIGlobalObject> mGlobal;
  nsTArray<RefPtr<BlobImpl>> mBlobs;
};

static void ComposeAndStoreGroupName(JSContext* aCx,
                                     const Sequence<JS::Value>& aData,
                                     nsAString& aName,
                                     nsTArray<nsString>* aGroupStack);
static bool UnstoreGroupName(nsAString& aName, nsTArray<nsString>* aGroupStack);

static bool ProcessArguments(JSContext* aCx, const Sequence<JS::Value>& aData,
                             Sequence<JS::Value>& aSequence,
                             Sequence<nsString>& aStyles);

static JS::Value CreateCounterOrResetCounterValue(JSContext* aCx,
                                                  const nsAString& aCountLabel,
                                                  uint32_t aCountValue);

/**
* Console API in workers uses the Structured Clone Algorithm to move any value
* from the worker thread to the main-thread. Some object cannot be moved and,
* in these cases, we convert them to strings.
* It's not the best, but at least we are able to show something.
*/

class ConsoleCallData final {
public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ConsoleCallData)

  ConsoleCallData(Console::MethodName aName, const nsAString& aString,
                  Console* aConsole)
      : mMutex("ConsoleCallData"),
        mConsoleID(aConsole->mConsoleID),
        mPrefix(aConsole->mPrefix),
        mMethodName(aName),
        mMicroSecondTimeStamp(JS_Now()),
        mStartTimerValue(0),
        mStartTimerStatus(Console::eTimerUnknown),
        mLogTimerDuration(0),
        mLogTimerStatus(Console::eTimerUnknown),
        mCountValue(MAX_PAGE_COUNTERS),
        mIDType(eUnknown),
        mOuterIDNumber(0),
        mInnerIDNumber(0),
        mMethodString(aString) {}

  void SetIDs(uint64_t aOuterID, uint64_t aInnerID) MOZ_REQUIRES(mMutex) {
    MOZ_ASSERT(mIDType == eUnknown);

    mOuterIDNumber = aOuterID;
    mInnerIDNumber = aInnerID;
    mIDType = eNumber;
  }

  void SetIDs(const nsAString& aOuterID, const nsAString& aInnerID)
      MOZ_REQUIRES(mMutex) {
    MOZ_ASSERT(mIDType == eUnknown);

    mOuterIDString = aOuterID;
    mInnerIDString = aInnerID;
    mIDType = eString;
  }

  void SetOriginAttributes(const OriginAttributes& aOriginAttributes)
      MOZ_REQUIRES(mMutex) {
    mOriginAttributes = aOriginAttributes;
  }

  void SetAddonId(nsIPrincipal* aPrincipal) MOZ_REQUIRES(mMutex) {
    nsAutoString addonId;
    aPrincipal->GetAddonId(addonId);

    mAddonId = addonId;
  }

  void AssertIsOnOwningThread() const {
    NS_ASSERT_OWNINGTHREAD(ConsoleCallData);
  }

  Mutex mMutex;

  const nsString mConsoleID MOZ_GUARDED_BY(mMutex);
  const nsString mPrefix MOZ_GUARDED_BY(mMutex);

  const Console::MethodName mMethodName MOZ_GUARDED_BY(mMutex);
  int64_t mMicroSecondTimeStamp MOZ_GUARDED_BY(mMutex);

  // These values are set in the owning thread and they contain the timestamp of
  // when the new timer has started, the name of it and the status of the
  // creation of it. If status is false, something went wrong. User
  // DOMHighResTimeStamp instead mozilla::TimeStamp because we use
  // monotonicTimer from Performance.now();
  // They will be set on the owning thread and never touched again on that
  // thread. They will be used in order to create a ConsoleTimerStart dictionary
  // when console.time() is used.
  DOMHighResTimeStamp mStartTimerValue MOZ_GUARDED_BY(mMutex);
  nsString mStartTimerLabel MOZ_GUARDED_BY(mMutex);
  Console::TimerStatus mStartTimerStatus MOZ_GUARDED_BY(mMutex);

  // These values are set in the owning thread and they contain the duration,
  // the name and the status of the LogTimer method. If status is false,
  // something went wrong. They will be set on the owning thread and never
  // touched again on that thread. They will be used in order to create a
  // ConsoleTimerLogOrEnd dictionary. This members are set when
  // console.timeEnd() or console.timeLog() are called.
  double mLogTimerDuration MOZ_GUARDED_BY(mMutex);
  nsString mLogTimerLabel MOZ_GUARDED_BY(mMutex);
  Console::TimerStatus mLogTimerStatus MOZ_GUARDED_BY(mMutex);

  // These 2 values are set by IncreaseCounter or ResetCounter on the owning
  // thread and they are used by CreateCounterOrResetCounterValue.
  // These members are set when console.count() or console.countReset() are
  // called.
  nsString mCountLabel MOZ_GUARDED_BY(mMutex);
  uint32_t mCountValue MOZ_GUARDED_BY(mMutex);

  // The concept of outerID and innerID is misleading because when a
  // ConsoleCallData is created from a window, these are the window IDs, but
  // when the object is created from a SharedWorker, a ServiceWorker or a
  // subworker of a ChromeWorker these IDs are the type of worker and the
  // filename of the callee.
  // In Console.sys.mjs the ID is 'jsm'.
  enum { eString, eNumber, eUnknown } mIDType MOZ_GUARDED_BY(mMutex);

  uint64_t mOuterIDNumber MOZ_GUARDED_BY(mMutex);
  nsString mOuterIDString MOZ_GUARDED_BY(mMutex);

  uint64_t mInnerIDNumber MOZ_GUARDED_BY(mMutex);
  nsString mInnerIDString MOZ_GUARDED_BY(mMutex);

  OriginAttributes mOriginAttributes MOZ_GUARDED_BY(mMutex);

  nsString mAddonId MOZ_GUARDED_BY(mMutex);

  const nsString mMethodString MOZ_GUARDED_BY(mMutex);

  // Stack management is complicated, because we want to do it as
  // lazily as possible.  Therefore, we have the following behavior:
  // 1)  mTopStackFrame is initialized whenever we have any JS on the stack
  // 2)  mReifiedStack is initialized if we're created in a worker.
  // 3)  mStack is set (possibly to null if there is no JS on the stack) if
  //     we're created on main thread.
  Maybe<ConsoleStackEntry> mTopStackFrame MOZ_GUARDED_BY(mMutex);
  Maybe<nsTArray<ConsoleStackEntry>> mReifiedStack MOZ_GUARDED_BY(mMutex);
  nsCOMPtr<nsIStackFrame> mStack MOZ_GUARDED_BY(mMutex);

private:
  ~ConsoleCallData() = default;

  NS_DECL_OWNINGTHREAD;
};

// MainThreadConsoleData instances are created on the Console thread and
// referenced from both main and Console threads in order to provide the same
// object for any ConsoleRunnables relating to the same Console.  A Console
// owns a MainThreadConsoleData; MainThreadConsoleData does not keep its
// Console alive.
class MainThreadConsoleData final {
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MainThreadConsoleData);

  JSObject* GetOrCreateSandbox(JSContext* aCx, nsIPrincipal* aPrincipal);
  // This method must receive aCx and aArguments in the same JS::Compartment.
  void ProcessCallData(JSContext* aCx, ConsoleCallData* aData,
                       const Sequence<JS::Value>& aArguments);

private:
  ~MainThreadConsoleData() {
    NS_ReleaseOnMainThread("MainThreadConsoleData::mStorage",
                           mStorage.forget());
    NS_ReleaseOnMainThread("MainThreadConsoleData::mSandbox",
                           mSandbox.forget());
  }

  // All members, except for mRefCnt, are accessed only on the main thread,
  // except in MainThreadConsoleData destruction, at which point there are no
  // other references.
  nsCOMPtr<nsIConsoleAPIStorage> mStorage;
  RefPtr<JSObjectHolder> mSandbox;
  nsTArray<nsString> mGroupStack;
};

// This base class must be extended for Worker and for Worklet.
class ConsoleRunnable : public StructuredCloneHolderBase {
public:
  ~ConsoleRunnable() override {
    MOZ_ASSERT(!mClonedData.mGlobal,
               "mClonedData.mGlobal is set and cleared in a main thread scope");
    // Clear the StructuredCloneHolderBase class.
    Clear();
  }

protected:
  JSObject* CustomReadHandler(JSContext* aCx, JSStructuredCloneReader* aReader,
                              const JS::CloneDataPolicy& aCloneDataPolicy,
                              uint32_t aTag, uint32_t aIndex) override {
    AssertIsOnMainThread();

    if (aTag == CONSOLE_TAG_BLOB) {
      MOZ_ASSERT(mClonedData.mBlobs.Length() > aIndex);

      JS::Rooted<JS::Value> val(aCx);
      {
        nsCOMPtr<nsIGlobalObject> global = mClonedData.mGlobal;
        RefPtr<Blob> blob =
            Blob::Create(global, mClonedData.mBlobs.ElementAt(aIndex));
        if (!ToJSValue(aCx, blob, &val)) {
          return nullptr;
        }
      }

      return &val.toObject();
    }

    MOZ_CRASH("No other tags are supported.");
    return nullptr;
  }

  bool CustomWriteHandler(JSContext* aCx, JSStructuredCloneWriter* aWriter,
                          JS::Handle<JSObject*> aObj,
                          bool* aSameProcessScopeRequired) override {
    RefPtr<Blob> blob;
    if (NS_SUCCEEDED(UNWRAP_OBJECT(Blob, aObj, blob))) {
      if (NS_WARN_IF(!JS_WriteUint32Pair(aWriter, CONSOLE_TAG_BLOB,
                                         mClonedData.mBlobs.Length()))) {
        return false;
      }

      mClonedData.mBlobs.AppendElement(blob->Impl());
      return true;
    }

    if (!JS_ObjectNotWritten(aWriter, aObj)) {
      return false;
    }

    JS::Rooted<JS::Value> value(aCx, JS::ObjectOrNullValue(aObj));
    JS::Rooted<JSString*> jsString(aCx, JS::ToString(aCx, value));
    if (NS_WARN_IF(!jsString)) {
      return false;
    }

    if (NS_WARN_IF(!JS_WriteString(aWriter, jsString))) {
      return false;
    }

    return true;
  }

  // Helper method for CallData
  void ProcessCallData(JSContext* aCx, MainThreadConsoleData* aConsoleData,
                       ConsoleCallData* aCallData) {
    AssertIsOnMainThread();

    ConsoleCommon::ClearException ce(aCx);

    // This is the same policy as when writing from the other side, in
    // WriteData.
    JS::CloneDataPolicy cloneDataPolicy;
    cloneDataPolicy.allowIntraClusterClonableSharedObjects();
    cloneDataPolicy.allowSharedMemoryObjects();

    JS::Rooted<JS::Value> argumentsValue(aCx);
    if (!Read(aCx, &argumentsValue, cloneDataPolicy)) {
      return;
    }

    MOZ_ASSERT(argumentsValue.isObject());

    JS::Rooted<JSObject*> argumentsObj(aCx, &argumentsValue.toObject());

    uint32_t length;
    if (!JS::GetArrayLength(aCx, argumentsObj, &length)) {
      return;
    }

    Sequence<JS::Value> values;
    SequenceRooter<JS::Value> arguments(aCx, &values);

    for (uint32_t i = 0; i < length; ++i) {
      JS::Rooted<JS::Value> value(aCx);

      if (!JS_GetElement(aCx, argumentsObj, i, &value)) {
        return;
      }

      if (!values.AppendElement(value, fallible)) {
        return;
      }
    }

    MOZ_ASSERT(values.Length() == length);

    aConsoleData->ProcessCallData(aCx, aCallData, values);
  }

  // Generic
  bool WriteArguments(JSContext* aCx, const Sequence<JS::Value>& aArguments) {
    ConsoleCommon::ClearException ce(aCx);

    JS::Rooted<JSObject*> arguments(
        aCx, JS::NewArrayObject(aCx, aArguments.Length()));
    if (NS_WARN_IF(!arguments)) {
      return false;
    }

    JS::Rooted<JS::Value> arg(aCx);
    for (uint32_t i = 0; i < aArguments.Length(); ++i) {
      arg = aArguments[i];
      if (NS_WARN_IF(
              !JS_DefineElement(aCx, arguments, i, arg, JSPROP_ENUMERATE))) {
        return false;
      }
    }

    JS::Rooted<JS::Value> value(aCx, JS::ObjectValue(*arguments));
    return WriteData(aCx, value);
  }

  // Helper method for Profile calls
  void ProcessProfileData(JSContext* aCx, Console::MethodName aMethodName,
                          const nsAString& aAction) {
    AssertIsOnMainThread();

    ConsoleCommon::ClearException ce(aCx);

    JS::Rooted<JS::Value> argumentsValue(aCx);
    bool ok = Read(aCx, &argumentsValue);
    mClonedData.mGlobal = nullptr;

    if (!ok) {
      return;
    }

    MOZ_ASSERT(argumentsValue.isObject());
    JS::Rooted<JSObject*> argumentsObj(aCx, &argumentsValue.toObject());
    if (NS_WARN_IF(!argumentsObj)) {
      return;
    }

    uint32_t length;
    if (!JS::GetArrayLength(aCx, argumentsObj, &length)) {
      return;
    }

    Sequence<JS::Value> arguments;

    for (uint32_t i = 0; i < length; ++i) {
      JS::Rooted<JS::Value> value(aCx);

      if (!JS_GetElement(aCx, argumentsObj, i, &value)) {
        return;
      }

      if (!arguments.AppendElement(value, fallible)) {
        return;
      }
    }

    Console::ProfileMethodMainthread(aCx, aAction, arguments);
  }

  bool WriteData(JSContext* aCx, JS::Handle<JS::Value> aValue) {
    // We use structuredClone to send the JSValue to the main-thread, in order
    // to store it into the Console API Service. The consumer will be the
    // console panel in the devtools and, because of this, we want to allow the
    // cloning of sharedArrayBuffers and WASM modules.
    JS::CloneDataPolicy cloneDataPolicy;
    cloneDataPolicy.allowIntraClusterClonableSharedObjects();
    cloneDataPolicy.allowSharedMemoryObjects();

    if (NS_WARN_IF(
            !Write(aCx, aValue, JS::UndefinedHandleValue, cloneDataPolicy))) {
      // Ignore the message.
      return false;
    }

    return true;
  }

  ConsoleStructuredCloneData mClonedData;
};

class ConsoleWorkletRunnable : public Runnable, public ConsoleRunnable {
protected:
  explicit ConsoleWorkletRunnable(Console* aConsole)
      : Runnable("dom::console::ConsoleWorkletRunnable"),
        mConsoleData(aConsole->GetOrCreateMainThreadData()) {
    WorkletThread::AssertIsOnWorkletThread();
    nsCOMPtr<WorkletGlobalScope> global = do_QueryInterface(aConsole->mGlobal);
    MOZ_ASSERT(global);
    mWorkletImpl = global->Impl();
    MOZ_ASSERT(mWorkletImpl);
  }

  ~ConsoleWorkletRunnable() override = default;

protected:
  RefPtr<MainThreadConsoleData> mConsoleData;

  RefPtr<WorkletImpl> mWorkletImpl;
};

// This runnable appends a CallData object into the Console queue running on
// the main-thread.
class ConsoleCallDataWorkletRunnable final : public ConsoleWorkletRunnable {
public:
  static already_AddRefed<ConsoleCallDataWorkletRunnable> Create(
      JSContext* aCx, Console* aConsole, ConsoleCallData* aConsoleData,
      const Sequence<JS::Value>& aArguments) {
    WorkletThread::AssertIsOnWorkletThread();

    RefPtr<ConsoleCallDataWorkletRunnable> runnable =
        new ConsoleCallDataWorkletRunnable(aConsole, aConsoleData);

    if (!runnable->WriteArguments(aCx, aArguments)) {
      return nullptr;
    }

    return runnable.forget();
  }

private:
  ConsoleCallDataWorkletRunnable(Console* aConsole, ConsoleCallData* aCallData)
      : ConsoleWorkletRunnable(aConsole), mCallData(aCallData) {
    WorkletThread::AssertIsOnWorkletThread();
    MOZ_ASSERT(aCallData);
    aCallData->AssertIsOnOwningThread();

    const WorkletLoadInfo& loadInfo = mWorkletImpl->LoadInfo();
    mCallData->SetIDs(loadInfo.OuterWindowID(), loadInfo.InnerWindowID());
  }

  ~ConsoleCallDataWorkletRunnable() override = default;

  NS_IMETHOD Run() override {
    AssertIsOnMainThread();
    AutoJSAPI jsapi;
    jsapi.Init();
    JSContext* cx = jsapi.cx();

    {
      MutexAutoLock lock(mCallData->mMutex);

      JSObject* sandbox =
          mConsoleData->GetOrCreateSandbox(cx, mWorkletImpl->Principal());
      JS::Rooted<JSObject*> global(cx, sandbox);
      if (NS_WARN_IF(!global)) {
        return NS_ERROR_FAILURE;
      }

      // The CreateSandbox call returns a proxy to the actual sandbox object. We
      // don't need a proxy here.
      global = js::UncheckedUnwrap(global);
      JSAutoRealm ar(cx, global);

      // We don't need to set a parent object in mCallData bacause there are not
      // DOM objects exposed to worklet.

      ProcessCallData(cx, mConsoleData, mCallData);
    }

    return NS_OK;
  }

  RefPtr<ConsoleCallData> mCallData;
};

class ConsoleWorkerRunnable : public WorkerProxyToMainThreadRunnable,
                              public ConsoleRunnable {
public:
  explicit ConsoleWorkerRunnable(Console* aConsole)
      : mConsoleData(aConsole->GetOrCreateMainThreadData()) {}

  ~ConsoleWorkerRunnable() override = default;

  bool Dispatch(JSContext* aCx, const Sequence<JS::Value>& aArguments) {
    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
    MOZ_ASSERT(workerPrivate);

    if (NS_WARN_IF(!WriteArguments(aCx, aArguments))) {
      RunBackOnWorkerThreadForCleanup(workerPrivate);
      return false;
    }

    if (NS_WARN_IF(!WorkerProxyToMainThreadRunnable::Dispatch(workerPrivate))) {
      // RunBackOnWorkerThreadForCleanup() will be called by
      // WorkerProxyToMainThreadRunnable::Dispatch().
      return false;
    }

    return true;
  }

protected:
  void RunOnMainThread(WorkerPrivate* aWorkerPrivate) override {
    MOZ_ASSERT(aWorkerPrivate);
    AssertIsOnMainThread();

    // Walk up to our containing page
    WorkerPrivate* wp = aWorkerPrivate->GetTopLevelWorker();

    nsCOMPtr<nsPIDOMWindowInner> window = wp->GetWindow();
    if (!window) {
      RunWindowless(aWorkerPrivate);
    } else {
      RunWithWindow(aWorkerPrivate, window);
    }
  }

  void RunWithWindow(WorkerPrivate* aWorkerPrivate,
                     nsPIDOMWindowInner* aWindow) {
    MOZ_ASSERT(aWorkerPrivate);
    AssertIsOnMainThread();

    AutoJSAPI jsapi;
    MOZ_ASSERT(aWindow);

    RefPtr<nsGlobalWindowInner> win = nsGlobalWindowInner::Cast(aWindow);
    if (NS_WARN_IF(!jsapi.Init(win))) {
      return;
    }

    nsCOMPtr<nsPIDOMWindowOuter> outerWindow = aWindow->GetOuterWindow();
    if (NS_WARN_IF(!outerWindow)) {
      return;
    }

    RunConsole(jsapi.cx(), aWindow->AsGlobal(), aWorkerPrivate, outerWindow,
               aWindow);
  }

  void RunWindowless(WorkerPrivate* aWorkerPrivate) {
    MOZ_ASSERT(aWorkerPrivate);
    AssertIsOnMainThread();

    WorkerPrivate* wp = aWorkerPrivate->GetTopLevelWorker();

    MOZ_ASSERT(!wp->GetWindow());

    AutoJSAPI jsapi;
    jsapi.Init();

    JSContext* cx = jsapi.cx();

    JS::Rooted<JSObject*> global(
        cx, mConsoleData->GetOrCreateSandbox(cx, wp->GetPrincipal()));
    if (NS_WARN_IF(!global)) {
      return;
    }

    // The GetOrCreateSandbox call returns a proxy to the actual sandbox object.
    // We don't need a proxy here.
    global = js::UncheckedUnwrap(global);

    JSAutoRealm ar(cx, global);

    nsCOMPtr<nsIGlobalObject> globalObject = xpc::NativeGlobal(global);
    if (NS_WARN_IF(!globalObject)) {
      return;
    }

    RunConsole(cx, globalObject, aWorkerPrivate, nullptr, nullptr);
  }

  void RunBackOnWorkerThreadForCleanup(WorkerPrivate* aWorkerPrivate) override {
    MOZ_ASSERT(aWorkerPrivate);
    aWorkerPrivate->AssertIsOnWorkerThread();
  }

  // This method is called in the main-thread.
  virtual void RunConsole(JSContext* aCx, nsIGlobalObject* aGlobal,
                          WorkerPrivate* aWorkerPrivate,
                          nsPIDOMWindowOuter* aOuterWindow,
                          nsPIDOMWindowInner* aInnerWindow) = 0;

  bool ForMessaging() const override { return true; }

  RefPtr<MainThreadConsoleData> mConsoleData;
};

// This runnable appends a CallData object into the Console queue running on
// the main-thread.
class ConsoleCallDataWorkerRunnable final : public ConsoleWorkerRunnable {
public:
  ConsoleCallDataWorkerRunnable(Console* aConsole, ConsoleCallData* aCallData)
      : ConsoleWorkerRunnable(aConsole), mCallData(aCallData) {
    MOZ_ASSERT(aCallData);
    mCallData->AssertIsOnOwningThread();
  }

private:
  ~ConsoleCallDataWorkerRunnable() override = default;

  void RunConsole(JSContext* aCx, nsIGlobalObject* aGlobal,
                  WorkerPrivate* aWorkerPrivate,
                  nsPIDOMWindowOuter* aOuterWindow,
                  nsPIDOMWindowInner* aInnerWindow) override {
    MOZ_ASSERT(aGlobal);
    MOZ_ASSERT(aWorkerPrivate);
    AssertIsOnMainThread();

    // The windows have to run in parallel.
    MOZ_ASSERT(!!aOuterWindow == !!aInnerWindow);

    {
      MutexAutoLock lock(mCallData->mMutex);
      if (aOuterWindow) {
        mCallData->SetIDs(aOuterWindow->WindowID(), aInnerWindow->WindowID());
      } else {
        ConsoleStackEntry frame;
        if (mCallData->mTopStackFrame) {
          frame = *mCallData->mTopStackFrame;
        }

        nsCString id = frame.mFilename;
        nsString innerID;
        if (aWorkerPrivate->IsSharedWorker()) {
          innerID = u"SharedWorker"_ns;
        } else if (aWorkerPrivate->IsServiceWorker()) {
          innerID = u"ServiceWorker"_ns;
          // Use scope as ID so the webconsole can decide if the message should
          // show up per tab
          id = aWorkerPrivate->ServiceWorkerScope();
        } else {
          innerID = u"Worker"_ns;
        }

        mCallData->SetIDs(NS_ConvertUTF8toUTF16(id), innerID);
      }

      mClonedData.mGlobal = aGlobal;

      ProcessCallData(aCx, mConsoleData, mCallData);

      mClonedData.mGlobal = nullptr;
    }
  }

  RefPtr<ConsoleCallData> mCallData;
};

// This runnable calls ProfileMethod() on the console on the main-thread.
class ConsoleProfileWorkletRunnable final : public ConsoleWorkletRunnable {
public:
  static already_AddRefed<ConsoleProfileWorkletRunnable> Create(
      JSContext* aCx, Console* aConsole, Console::MethodName aName,
      const nsAString& aAction, const Sequence<JS::Value>& aArguments) {
    WorkletThread::AssertIsOnWorkletThread();

    RefPtr<ConsoleProfileWorkletRunnable> runnable =
        new ConsoleProfileWorkletRunnable(aConsole, aName, aAction);

    if (!runnable->WriteArguments(aCx, aArguments)) {
      return nullptr;
    }

    return runnable.forget();
  }

private:
  ConsoleProfileWorkletRunnable(Console* aConsole, Console::MethodName aName,
                                const nsAString& aAction)
      : ConsoleWorkletRunnable(aConsole), mName(aName), mAction(aAction) {
    MOZ_ASSERT(aConsole);
  }

  NS_IMETHOD Run() override {
    AssertIsOnMainThread();

    AutoJSAPI jsapi;
    jsapi.Init();
    JSContext* cx = jsapi.cx();

    JSObject* sandbox =
        mConsoleData->GetOrCreateSandbox(cx, mWorkletImpl->Principal());
    JS::Rooted<JSObject*> global(cx, sandbox);
    if (NS_WARN_IF(!global)) {
      return NS_ERROR_FAILURE;
    }

    // The CreateSandbox call returns a proxy to the actual sandbox object. We
    // don't need a proxy here.
    global = js::UncheckedUnwrap(global);

    JSAutoRealm ar(cx, global);

    // We don't need to set a parent object in mCallData bacause there are not
    // DOM objects exposed to worklet.
    ProcessProfileData(cx, mName, mAction);

    return NS_OK;
  }

  Console::MethodName mName;
  nsString mAction;
};

// This runnable calls ProfileMethod() on the console on the main-thread.
class ConsoleProfileWorkerRunnable final : public ConsoleWorkerRunnable {
public:
  ConsoleProfileWorkerRunnable(Console* aConsole, Console::MethodName aName,
                               const nsAString& aAction)
      : ConsoleWorkerRunnable(aConsole), mName(aName), mAction(aAction) {
    MOZ_ASSERT(aConsole);
  }

private:
  void RunConsole(JSContext* aCx, nsIGlobalObject* aGlobal,
                  WorkerPrivate* aWorkerPrivate,
                  nsPIDOMWindowOuter* aOuterWindow,
                  nsPIDOMWindowInner* aInnerWindow) override {
    AssertIsOnMainThread();
    MOZ_ASSERT(aGlobal);

    mClonedData.mGlobal = aGlobal;

    ProcessProfileData(aCx, mName, mAction);

    mClonedData.mGlobal = nullptr;
  }

  Console::MethodName mName;
  nsString mAction;
};

NS_IMPL_CYCLE_COLLECTION_CLASS(Console)

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Console)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mConsoleEventNotifier)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDumpFunction)
  NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
  tmp->Shutdown();
  tmp->mArgumentStorage.clearAndFree();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Console)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mConsoleEventNotifier)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDumpFunction)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Console)
  for (uint32_t i = 0; i < tmp->mArgumentStorage.length(); ++i) {
    tmp->mArgumentStorage[i].Trace(aCallbacks, aClosure);
  }
NS_IMPL_CYCLE_COLLECTION_TRACE_END

NS_IMPL_CYCLE_COLLECTING_ADDREF(Console)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Console)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Console)
  NS_INTERFACE_MAP_ENTRY(nsIObserver)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIObserver)
  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END

/* static */
already_AddRefed<Console> Console::Create(JSContext* aCx,
                                          nsPIDOMWindowInner* aWindow,
                                          ErrorResult& aRv) {
  MOZ_ASSERT_IF(NS_IsMainThread(), aWindow);

  uint64_t outerWindowID = 0;
  uint64_t innerWindowID = 0;

  if (aWindow) {
    innerWindowID = aWindow->WindowID();

    // Without outerwindow any console message coming from this object will not
    // shown in the devtools webconsole. But this should be fine because
    // probably we are shutting down, or the window is CCed/GCed.
    nsPIDOMWindowOuter* outerWindow = aWindow->GetOuterWindow();
    if (outerWindow) {
      outerWindowID = outerWindow->WindowID();
    }
  }

  RefPtr<Console> console = new Console(aCx, nsGlobalWindowInner::Cast(aWindow),
                                        outerWindowID, innerWindowID);
  console->Initialize(aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  return console.forget();
}

/* static */
already_AddRefed<Console> Console::CreateForWorklet(JSContext* aCx,
                                                    nsIGlobalObject* aGlobal,
                                                    uint64_t aOuterWindowID,
                                                    uint64_t aInnerWindowID,
                                                    ErrorResult& aRv) {
  WorkletThread::AssertIsOnWorkletThread();

  RefPtr<Console> console =
      new Console(aCx, aGlobal, aOuterWindowID, aInnerWindowID);
  console->Initialize(aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  return console.forget();
}

Console::Console(JSContext* aCx, nsIGlobalObject* aGlobal,
                 uint64_t aOuterWindowID, uint64_t aInnerWindowID,
                 const nsAString& aPrefix)
    : mGlobal(aGlobal),
      mOuterID(aOuterWindowID),
      mInnerID(aInnerWindowID),
      mDumpToStdout(false),
      mLogModule(nullptr),
      mPrefix(aPrefix),
      mChromeInstance(false),
      mCurrentLogLevel(WebIDLLogLevelToInteger(ConsoleLogLevel::All)),
      mStatus(eUnknown),
      mCreationTimeStamp(TimeStamp::Now()) {
  // Let's enable the dumping to stdout by default for chrome.
  if (nsContentUtils::ThreadsafeIsSystemCaller(aCx)) {
    mDumpToStdout = StaticPrefs::devtools_console_stdout_chrome();
  } else {
    mDumpToStdout = StaticPrefs::devtools_console_stdout_content();
  }

  // By default, the console uses "console" MOZ_LOG module name,
  // but ConsoleInstance may pass a custom prefix which we will use a module
  // name.
  mLogModule = mPrefix.IsEmpty()
                   ? LogModule::Get("console")
                   : LogModule::Get(NS_ConvertUTF16toUTF8(mPrefix).get());

  mozilla::HoldJSObjects(this);
}

Console::~Console() {
  AssertIsOnOwningThread();
  Shutdown();
  mozilla::DropJSObjects(this);
}

void Console::Initialize(ErrorResult& aRv) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mStatus == eUnknown);

  if (NS_IsMainThread()) {
    nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
    if (NS_WARN_IF(!obs)) {
      aRv.Throw(NS_ERROR_FAILURE);
      return;
    }

    if (mInnerID) {
      aRv = obs->AddObserver(this, "inner-window-destroyed", true);
      if (NS_WARN_IF(aRv.Failed())) {
        return;
      }
    }

    aRv = obs->AddObserver(this, "memory-pressure", true);
    if (NS_WARN_IF(aRv.Failed())) {
      return;
    }
  }

  mStatus = eInitialized;
}

void Console::Shutdown() {
  AssertIsOnOwningThread();

  if (mStatus == eUnknown || mStatus == eShuttingDown) {
    return;
  }

  if (NS_IsMainThread()) {
    nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
    if (obs) {
      obs->RemoveObserver(this, "inner-window-destroyed");
      obs->RemoveObserver(this, "memory-pressure");
    }
  }

  mTimerRegistry.Clear();
  mCounterRegistry.Clear();

  ClearStorage();
  mCallDataStorage.Clear();

  mStatus = eShuttingDown;
}

NS_IMETHODIMP
Console::Observe(nsISupports* aSubject, const char* aTopic,
                 const char16_t* aData) {
  AssertIsOnMainThread();

  if (!strcmp(aTopic, "inner-window-destroyed")) {
    nsCOMPtr<nsISupportsPRUint64> wrapper = do_QueryInterface(aSubject);
    NS_ENSURE_TRUE(wrapper, NS_ERROR_FAILURE);

    uint64_t innerID;
    nsresult rv = wrapper->GetData(&innerID);
    NS_ENSURE_SUCCESS(rv, rv);

    if (innerID == mInnerID) {
      Shutdown();
    }

    return NS_OK;
  }

  if (!strcmp(aTopic, "memory-pressure")) {
    ClearStorage();
    return NS_OK;
  }

  return NS_OK;
}

void Console::ClearStorage() {
  mCallDataStorage.Clear();
  mArgumentStorage.clearAndFree();
}

#define METHOD(name, string)                                          \
  /* static */ void Console::name(const GlobalObject& aGlobal,        \
                                  const Sequence<JS::Value>& aData) { \
    Method(aGlobal, Method##name, nsLiteralString(string), aData);    \
  }

METHOD(Log, u"log")
METHOD(Info, u"info")
METHOD(Warn, u"warn")
METHOD(Error, u"error")
METHOD(Exception, u"exception")
METHOD(Debug, u"debug")
METHOD(Table, u"table")
METHOD(Trace, u"trace")

// Displays an interactive listing of all the properties of an object.
METHOD(Dir, u"dir");
METHOD(Dirxml, u"dirxml");

METHOD(Group, u"group")
METHOD(GroupCollapsed, u"groupCollapsed")

#undef METHOD

/* static */
void Console::Clear(const GlobalObject& aGlobal) {
  const Sequence<JS::Value> data;
  Method(aGlobal, MethodClear, u"clear"_ns, data);
}

/* static */
void Console::GroupEnd(const GlobalObject& aGlobal) {
  const Sequence<JS::Value> data;
  Method(aGlobal, MethodGroupEnd, u"groupEnd"_ns, data);
}

/* static */
void Console::Time(const GlobalObject& aGlobal, const nsAString& aLabel) {
  StringMethod(aGlobal, aLabel, Sequence<JS::Value>(), MethodTime, u"time"_ns);
}

/* static */
void Console::TimeEnd(const GlobalObject& aGlobal, const nsAString& aLabel) {
  StringMethod(aGlobal, aLabel, Sequence<JS::Value>(), MethodTimeEnd,
               u"timeEnd"_ns);
}

/* static */
void Console::TimeLog(const GlobalObject& aGlobal, const nsAString& aLabel,
                      const Sequence<JS::Value>& aData) {
  StringMethod(aGlobal, aLabel, aData, MethodTimeLog, u"timeLog"_ns);
}

/* static */
void Console::StringMethod(const GlobalObject& aGlobal, const nsAString& aLabel,
                           const Sequence<JS::Value>& aData,
                           MethodName aMethodName,
                           const nsAString& aMethodString) {
  RefPtr<Console> console = GetConsole(aGlobal);
  if (!console) {
    return;
  }

  console->StringMethodInternal(aGlobal.Context(), aLabel, aData, aMethodName,
                                aMethodString);
}

void Console::StringMethodInternal(JSContext* aCx, const nsAString& aLabel,
                                   const Sequence<JS::Value>& aData,
                                   MethodName aMethodName,
                                   const nsAString& aMethodString) {
  ConsoleCommon::ClearException ce(aCx);

  Sequence<JS::Value> data;
  SequenceRooter<JS::Value> rooter(aCx, &data);

  JS::Rooted<JS::Value> value(aCx);
  if (!dom::ToJSValue(aCx, aLabel, &value)) {
    return;
  }

  if (!data.AppendElement(value, fallible)) {
    return;
  }

  for (uint32_t i = 0; i < aData.Length(); ++i) {
    if (!data.AppendElement(aData[i], fallible)) {
      return;
    }
  }

  MethodInternal(aCx, aMethodName, aMethodString, data);
}

/* static */
void Console::TimeStamp(const GlobalObject& aGlobal,
                        const JS::Handle<JS::Value> aData) {
  JSContext* cx = aGlobal.Context();

  ConsoleCommon::ClearException ce(cx);

  Sequence<JS::Value> data;
  SequenceRooter<JS::Value> rooter(cx, &data);

  if (aData.isString() && !data.AppendElement(aData, fallible)) {
    return;
  }

  Method(aGlobal, MethodTimeStamp, u"timeStamp"_ns, data);
}

/* static */
void Console::Profile(const GlobalObject& aGlobal,
                      const Sequence<JS::Value>& aData) {
  ProfileMethod(aGlobal, MethodProfile, u"profile"_ns, aData);
}

/* static */
void Console::ProfileEnd(const GlobalObject& aGlobal,
                         const Sequence<JS::Value>& aData) {
  ProfileMethod(aGlobal, MethodProfileEnd, u"profileEnd"_ns, aData);
}

/* static */
void Console::ProfileMethod(const GlobalObject& aGlobal, MethodName aName,
                            const nsAString& aAction,
                            const Sequence<JS::Value>& aData) {
  RefPtr<Console> console = GetConsole(aGlobal);
  if (!console) {
    return;
  }

  JSContext* cx = aGlobal.Context();
  console->ProfileMethodInternal(cx, aName, aAction, aData);
}

void Console::ProfileMethodInternal(JSContext* aCx, MethodName aMethodName,
                                    const nsAString& aAction,
                                    const Sequence<JS::Value>& aData) {
  if (!ShouldProceed(aMethodName)) {
    return;
  }

  MaybeExecuteDumpFunction(aCx, aMethodName, aAction, aData, nullptr,
                           DOMHighResTimeStamp(0.0));

  if (WorkletThread::IsOnWorkletThread()) {
    RefPtr<ConsoleProfileWorkletRunnable> runnable =
        ConsoleProfileWorkletRunnable::Create(aCx, this, aMethodName, aAction,
                                              aData);
    if (!runnable) {
      return;
    }

    NS_DispatchToMainThread(runnable.forget());
    return;
  }

  if (!NS_IsMainThread()) {
    // Here we are in a worker thread.
    RefPtr<ConsoleProfileWorkerRunnable> runnable =
        new ConsoleProfileWorkerRunnable(this, aMethodName, aAction);

    runnable->Dispatch(aCx, aData);
    return;
  }

  ProfileMethodMainthread(aCx, aAction, aData);
}

// static
void Console::ProfileMethodMainthread(JSContext* aCx, const nsAString& aAction,
                                      const Sequence<JS::Value>& aData) {
  MOZ_ASSERT(NS_IsMainThread());
  ConsoleCommon::ClearException ce(aCx);

  RootedDictionary<ConsoleProfileEvent> event(aCx);
  event.mAction = aAction;
  event.mChromeContext = nsContentUtils::ThreadsafeIsSystemCaller(aCx);

  event.mArguments.Construct();
  Sequence<JS::Value>& sequence = event.mArguments.Value();

  for (uint32_t i = 0; i < aData.Length(); ++i) {
    if (!sequence.AppendElement(aData[i], fallible)) {
      return;
    }
  }

  JS::Rooted<JS::Value> eventValue(aCx);
  if (!ToJSValue(aCx, event, &eventValue)) {
    return;
  }

  JS::Rooted<JSObject*> eventObj(aCx, &eventValue.toObject());
  MOZ_ASSERT(eventObj);

  if (!JS_DefineProperty(aCx, eventObj, "wrappedJSObject", eventValue,
                         JSPROP_ENUMERATE)) {
    return;
  }

  nsIXPConnect* xpc = nsContentUtils::XPConnect();
  nsCOMPtr<nsISupports> wrapper;
  const nsIID& iid = NS_GET_IID(nsISupports);

  if (NS_FAILED(xpc->WrapJS(aCx, eventObj, iid, getter_AddRefs(wrapper)))) {
    return;
  }

  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
  if (obs) {
    obs->NotifyObservers(wrapper, "console-api-profiler", nullptr);
  }
}

/* static */
void Console::Assert(const GlobalObject& aGlobal, bool aCondition,
                     const Sequence<JS::Value>& aData) {
  if (!aCondition) {
    Method(aGlobal, MethodAssert, u"assert"_ns, aData);
  }
}

/* static */
void Console::Count(const GlobalObject& aGlobal, const nsAString& aLabel) {
  StringMethod(aGlobal, aLabel, Sequence<JS::Value>(), MethodCount,
               u"count"_ns);
}

/* static */
void Console::CountReset(const GlobalObject& aGlobal, const nsAString& aLabel) {
  StringMethod(aGlobal, aLabel, Sequence<JS::Value>(), MethodCountReset,
               u"countReset"_ns);
}

namespace {

void StackFrameToStackEntry(JSContext* aCx, nsIStackFrame* aStackFrame,
                            ConsoleStackEntry& aStackEntry) {
  MOZ_ASSERT(aStackFrame);

  aStackFrame->GetFilename(aCx, aStackEntry.mFilename);
  aStackEntry.mSourceId = aStackFrame->GetSourceId(aCx);
  aStackEntry.mLineNumber = aStackFrame->GetLineNumber(aCx);
  aStackEntry.mColumnNumber = aStackFrame->GetColumnNumber(aCx);

  aStackFrame->GetName(aCx, aStackEntry.mFunctionName);

  nsString cause;
  aStackFrame->GetAsyncCause(aCx, cause);
  if (!cause.IsEmpty()) {
    aStackEntry.mAsyncCause.Construct(cause);
  }
}

void ReifyStack(JSContext* aCx, nsIStackFrame* aStack,
                nsTArray<ConsoleStackEntry>& aRefiedStack) {
  nsCOMPtr<nsIStackFrame> stack(aStack);

  while (stack) {
    ConsoleStackEntry& data = *aRefiedStack.AppendElement();
    StackFrameToStackEntry(aCx, stack, data);

    nsCOMPtr<nsIStackFrame> caller = stack->GetCaller(aCx);

    if (!caller) {
      caller = stack->GetAsyncCaller(aCx);
    }
    stack.swap(caller);
  }
}

}  // anonymous namespace

// Queue a call to a console method. See the CALL_DELAY constant.
/* static */
void Console::Method(const GlobalObject& aGlobal, MethodName aMethodName,
                     const nsAString& aMethodString,
                     const Sequence<JS::Value>& aData) {
  RefPtr<Console> console = GetConsole(aGlobal);
  if (!console) {
    return;
  }

  console->MethodInternal(aGlobal.Context(), aMethodName, aMethodString, aData);
}

void Console::MethodInternal(JSContext* aCx, MethodName aMethodName,
                             const nsAString& aMethodString,
                             const Sequence<JS::Value>& aData) {
  if (!ShouldProceed(aMethodName)) {
    return;
  }

  AssertIsOnOwningThread();

  ConsoleCommon::ClearException ce(aCx);

  RefPtr<ConsoleCallData> callData =
      new ConsoleCallData(aMethodName, aMethodString, this);

  MutexAutoLock lock(callData->mMutex);

  if (!StoreCallData(aCx, callData, aData)) {
    return;
  }

  OriginAttributes oa;

  if (NS_IsMainThread()) {
    if (mGlobal) {
      // Save the principal's OriginAttributes in the console event data
      // so that we will be able to filter messages by origin attributes.
      nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(mGlobal);
      if (NS_WARN_IF(!sop)) {
        return;
      }

      nsCOMPtr<nsIPrincipal> principal = sop->GetPrincipal();
      if (NS_WARN_IF(!principal)) {
        return;
      }

      oa = principal->OriginAttributesRef();
      callData->SetAddonId(principal);

#ifdef DEBUG
      if (!principal->IsSystemPrincipal()) {
        nsCOMPtr<nsIWebNavigation> webNav = do_GetInterface(mGlobal);
        if (webNav) {
          nsCOMPtr<nsILoadContext> loadContext = do_QueryInterface(webNav);
          MOZ_ASSERT(loadContext);

          bool pb;
          if (NS_SUCCEEDED(loadContext->GetUsePrivateBrowsing(&pb))) {
            MOZ_ASSERT(pb == oa.IsPrivateBrowsing());
          }
        }
      }
#endif
    }
  } else if (WorkletThread::IsOnWorkletThread()) {
    nsCOMPtr<WorkletGlobalScope> global = do_QueryInterface(mGlobal);
    MOZ_ASSERT(global);
    oa = global->Impl()->OriginAttributesRef();
  } else {
    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
    MOZ_ASSERT(workerPrivate);
    oa = workerPrivate->GetOriginAttributes();
  }

  callData->SetOriginAttributes(oa);

  JS::StackCapture captureMode =
      ShouldIncludeStackTrace(aMethodName)
          ? JS::StackCapture(JS::MaxFrames(DEFAULT_MAX_STACKTRACE_DEPTH))
          : JS::StackCapture(JS::FirstSubsumedFrame(aCx));
  nsCOMPtr<nsIStackFrame> stack = CreateStack(aCx, std::move(captureMode));

  if (stack) {
    callData->mTopStackFrame.emplace();
    StackFrameToStackEntry(aCx, stack, *callData->mTopStackFrame);
  }

  if (NS_IsMainThread()) {
    callData->mStack = stack;
  } else {
    // nsIStackFrame is not threadsafe, so we need to snapshot it now,
    // before we post our runnable to the main thread.
    callData->mReifiedStack.emplace();
    ReifyStack(aCx, stack, *callData->mReifiedStack);
  }

  DOMHighResTimeStamp monotonicTimer = 0.0;

  // Monotonic timer for 'time', 'timeLog' and 'timeEnd'
  if ((aMethodName == MethodTime || aMethodName == MethodTimeLog ||
       aMethodName == MethodTimeEnd || aMethodName == MethodTimeStamp) &&
      !MonotonicTimer(aCx, aMethodName, aData, &monotonicTimer)) {
    return;
  }

  if (aMethodName == MethodTime && !aData.IsEmpty()) {
    callData->mStartTimerStatus =
        StartTimer(aCx, aData[0], monotonicTimer, callData->mStartTimerLabel,
                   &callData->mStartTimerValue);
  }

  else if (aMethodName == MethodTimeEnd && !aData.IsEmpty()) {
    callData->mLogTimerStatus =
        LogTimer(aCx, aData[0], monotonicTimer, callData->mLogTimerLabel,
                 &callData->mLogTimerDuration, true /* Cancel timer */);
  }

  else if (aMethodName == MethodTimeLog && !aData.IsEmpty()) {
    callData->mLogTimerStatus =
        LogTimer(aCx, aData[0], monotonicTimer, callData->mLogTimerLabel,
                 &callData->mLogTimerDuration, false /* Cancel timer */);
  }

  else if (aMethodName == MethodCount) {
    callData->mCountValue = IncreaseCounter(aCx, aData, callData->mCountLabel);
    if (!callData->mCountValue) {
      return;
    }
  }

  else if (aMethodName == MethodCountReset) {
    callData->mCountValue = ResetCounter(aCx, aData, callData->mCountLabel);
    if (callData->mCountLabel.IsEmpty()) {
      return;
    }
  }

  // Before processing this CallData differently, it's time to call the dump
  // function.
  //
  // Only log the stack trace for console.trace() and console.assert()
  if (aMethodName == MethodTrace || aMethodName == MethodAssert) {
    MaybeExecuteDumpFunction(aCx, aMethodName, aMethodString, aData, stack,
                             monotonicTimer);
  } else {
    MaybeExecuteDumpFunction(aCx, aMethodName, aMethodString, aData, nullptr,
                             monotonicTimer);
  }

  if (NS_IsMainThread()) {
    if (mInnerID) {
      callData->SetIDs(mOuterID, mInnerID);
    } else if (!mPassedInnerID.IsEmpty()) {
      callData->SetIDs(u"jsm"_ns, mPassedInnerID);
    } else {
      nsAutoCString filename;
      if (callData->mTopStackFrame.isSome()) {
        filename = callData->mTopStackFrame->mFilename;
      }
      callData->SetIDs(u"jsm"_ns, NS_ConvertUTF8toUTF16(filename));
    }

    GetOrCreateMainThreadData()->ProcessCallData(aCx, callData, aData);

    // Just because we don't want to expose
    // retrieveConsoleEvents/setConsoleEventHandler to main-thread, we can
    // cleanup the mCallDataStorage:
    UnstoreCallData(callData);
    return;
  }

  if (WorkletThread::IsOnWorkletThread()) {
    RefPtr<ConsoleCallDataWorkletRunnable> runnable =
        ConsoleCallDataWorkletRunnable::Create(aCx, this, callData, aData);
    if (!runnable) {
      return;
    }

    NS_DispatchToMainThread(runnable);
    return;
  }

  // We do this only in workers for now.
  NotifyHandler(aCx, aData, callData);

  if (StaticPrefs::dom_worker_console_dispatch_events_to_main_thread()) {
    RefPtr<ConsoleCallDataWorkerRunnable> runnable =
        new ConsoleCallDataWorkerRunnable(this, callData);
    Unused << NS_WARN_IF(!runnable->Dispatch(aCx, aData));
  }
}

MainThreadConsoleData* Console::GetOrCreateMainThreadData() {
  AssertIsOnOwningThread();

  if (!mMainThreadData) {
    mMainThreadData = new MainThreadConsoleData();
  }

  return mMainThreadData;
}

// We store information to lazily compute the stack in the reserved slots of
// LazyStackGetter.  The first slot always stores a JS object: it's either the
// JS wrapper of the nsIStackFrame or the actual reified stack representation.
// The second slot is a PrivateValue() holding an nsIStackFrame* when we haven't
// reified the stack yet, or an UndefinedValue() otherwise.
enum { SLOT_STACKOBJ, SLOT_RAW_STACK };

bool LazyStackGetter(JSContext* aCx, unsigned aArgc, JS::Value* aVp) {
  JS::CallArgs args = CallArgsFromVp(aArgc, aVp);
  JS::Rooted<JSObject*> callee(aCx, &args.callee());

  JS::Value v = js::GetFunctionNativeReserved(&args.callee(), SLOT_RAW_STACK);
  if (v.isUndefined()) {
    // Already reified.
    args.rval().set(js::GetFunctionNativeReserved(callee, SLOT_STACKOBJ));
    return true;
  }

  nsIStackFrame* stack = reinterpret_cast<nsIStackFrame*>(v.toPrivate());
  nsTArray<ConsoleStackEntry> reifiedStack;
  ReifyStack(aCx, stack, reifiedStack);

  JS::Rooted<JS::Value> stackVal(aCx);
  if (NS_WARN_IF(!ToJSValue(aCx, reifiedStack, &stackVal))) {
    return false;
  }

  MOZ_ASSERT(stackVal.isObject());

  js::SetFunctionNativeReserved(callee, SLOT_STACKOBJ, stackVal);
  js::SetFunctionNativeReserved(callee, SLOT_RAW_STACK, JS::UndefinedValue());

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

void MainThreadConsoleData::ProcessCallData(
    JSContext* aCx, ConsoleCallData* aData,
    const Sequence<JS::Value>& aArguments) {
  AssertIsOnMainThread();
  MOZ_ASSERT(aData);
  aData->mMutex.AssertCurrentThreadOwns();

  JS::Rooted<JS::Value> eventValue(aCx);

  // We want to create a console event object and pass it to our
  // nsIConsoleAPIStorage implementation.  We want to define some accessor
  // properties on this object, and those will need to keep an nsIStackFrame
  // alive.  But nsIStackFrame cannot be wrapped in an untrusted scope.  And
  // further, passing untrusted objects to system code is likely to run afoul of
  // Object Xrays.  So we want to wrap in a system-principal scope here.  But
  // which one?  We could cheat and try to get the underlying JSObject* of
  // mStorage, but that's a bit fragile.  Instead, we just use the junk scope,
  // with explicit permission from the XPConnect module owner.  If you're
  // tempted to do that anywhere else, talk to said module owner first.

  // aCx and aArguments are in the same compartment.
  JS::Rooted<JSObject*> targetScope(aCx, xpc::PrivilegedJunkScope());
  if (NS_WARN_IF(!Console::PopulateConsoleNotificationInTheTargetScope(
          aCx, aArguments, targetScope, &eventValue, aData, &mGroupStack))) {
    return;
  }

  if (!mStorage) {
    mStorage = do_GetService("@mozilla.org/consoleAPI-storage;1");
  }

  if (!mStorage) {
    NS_WARNING("Failed to get the ConsoleAPIStorage service.");
    return;
  }

  nsAutoString innerID;

  MOZ_ASSERT(aData->mIDType != ConsoleCallData::eUnknown);
  if (aData->mIDType == ConsoleCallData::eString) {
    innerID = aData->mInnerIDString;
  } else {
    MOZ_ASSERT(aData->mIDType == ConsoleCallData::eNumber);
    innerID.AppendInt(aData->mInnerIDNumber);
  }

  if (aData->mMethodName == Console::MethodClear) {
    DebugOnly<nsresult> rv = mStorage->ClearEvents(innerID);
    NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "ClearEvents failed");
  }

  if (NS_FAILED(mStorage->RecordEvent(innerID, eventValue))) {
    NS_WARNING("Failed to record a console event.");
  }
}

/* static */
bool Console::PopulateConsoleNotificationInTheTargetScope(
    JSContext* aCx, const Sequence<JS::Value>& aArguments,
    JS::Handle<JSObject*> aTargetScope,
    JS::MutableHandle<JS::Value> aEventValue, ConsoleCallData* aData,
    nsTArray<nsString>* aGroupStack) {
  MOZ_ASSERT(aCx);
  MOZ_ASSERT(aData);
  MOZ_ASSERT(aTargetScope);
  MOZ_ASSERT(JS_IsGlobalObject(aTargetScope));

  aData->mMutex.AssertCurrentThreadOwns();

  ConsoleStackEntry frame;
  if (aData->mTopStackFrame) {
    frame = *aData->mTopStackFrame;
  }

  ConsoleCommon::ClearException ce(aCx);
  RootedDictionary<ConsoleEvent> event(aCx);

  event.mAddonId = aData->mAddonId;

  event.mID.Construct();
  event.mInnerID.Construct();

  event.mChromeContext = nsContentUtils::ThreadsafeIsSystemCaller(aCx);

  if (aData->mIDType == ConsoleCallData::eString) {
    event.mID.Value().SetAsString() = aData->mOuterIDString;
    event.mInnerID.Value().SetAsString() = aData->mInnerIDString;
  } else if (aData->mIDType == ConsoleCallData::eNumber) {
    event.mID.Value().SetAsUnsignedLongLong() = aData->mOuterIDNumber;
    event.mInnerID.Value().SetAsUnsignedLongLong() = aData->mInnerIDNumber;
  } else {
    // aData->mIDType can be eUnknown when we dispatch notifications via
    // mConsoleEventNotifier.
    event.mID.Value().SetAsUnsignedLongLong() = 0;
    event.mInnerID.Value().SetAsUnsignedLongLong() = 0;
  }

  event.mConsoleID = aData->mConsoleID;
  event.mLevel = aData->mMethodString;
  event.mFilename = frame.mFilename;
  event.mPrefix = aData->mPrefix;

  nsCOMPtr<nsIURI> filenameURI;
  nsAutoCString pass;
  if (NS_IsMainThread() &&
      NS_SUCCEEDED(NS_NewURI(getter_AddRefs(filenameURI), frame.mFilename)) &&
      NS_SUCCEEDED(filenameURI->GetPassword(pass)) && !pass.IsEmpty()) {
    nsCOMPtr<nsISensitiveInfoHiddenURI> safeURI =
        do_QueryInterface(filenameURI);
    nsAutoCString spec;
    if (safeURI && NS_SUCCEEDED(safeURI->GetSensitiveInfoHiddenSpec(spec))) {
      event.mFilename = spec;
    }
  }

  event.mSourceId = frame.mSourceId;
  event.mLineNumber = frame.mLineNumber;
  event.mColumnNumber = frame.mColumnNumber;
  event.mFunctionName = frame.mFunctionName;
  event.mTimeStamp = aData->mMicroSecondTimeStamp / PR_USEC_PER_MSEC;
  event.mMicroSecondTimeStamp = aData->mMicroSecondTimeStamp;
  event.mPrivate = aData->mOriginAttributes.IsPrivateBrowsing();

  switch (aData->mMethodName) {
    case MethodLog:
    case MethodInfo:
    case MethodWarn:
    case MethodError:
    case MethodException:
    case MethodDebug:
    case MethodAssert:
    case MethodGroup:
    case MethodGroupCollapsed:
    case MethodTrace:
      event.mArguments.Construct();
      event.mStyles.Construct();
      if (NS_WARN_IF(!ProcessArguments(aCx, aArguments,
                                       event.mArguments.Value(),
                                       event.mStyles.Value()))) {
        return false;
      }

      break;

    default:
      event.mArguments.Construct();
      if (NS_WARN_IF(
              !event.mArguments.Value().AppendElements(aArguments, fallible))) {
        return false;
      }
  }

  if (aData->mMethodName == MethodGroup ||
      aData->mMethodName == MethodGroupCollapsed) {
    ComposeAndStoreGroupName(aCx, event.mArguments.Value(), event.mGroupName,
                             aGroupStack);
  }

  else if (aData->mMethodName == MethodGroupEnd) {
    if (!UnstoreGroupName(event.mGroupName, aGroupStack)) {
      return false;
    }
  }

  else if (aData->mMethodName == MethodTime && !aArguments.IsEmpty()) {
    event.mTimer = CreateStartTimerValue(aCx, aData->mStartTimerLabel,
                                         aData->mStartTimerStatus);
  }

  else if ((aData->mMethodName == MethodTimeEnd ||
            aData->mMethodName == MethodTimeLog) &&
           !aArguments.IsEmpty()) {
    event.mTimer = CreateLogOrEndTimerValue(aCx, aData->mLogTimerLabel,
                                            aData->mLogTimerDuration,
                                            aData->mLogTimerStatus);
  }

  else if (aData->mMethodName == MethodCount ||
           aData->mMethodName == MethodCountReset) {
    event.mCounter = CreateCounterOrResetCounterValue(aCx, aData->mCountLabel,
                                                      aData->mCountValue);
  }

  JSAutoRealm ar2(aCx, aTargetScope);

  if (NS_WARN_IF(!ToJSValue(aCx, event, aEventValue))) {
    return false;
  }

  JS::Rooted<JSObject*> eventObj(aCx, &aEventValue.toObject());
  if (NS_WARN_IF(!JS_DefineProperty(aCx, eventObj, "wrappedJSObject", eventObj,
                                    JSPROP_ENUMERATE))) {
    return false;
  }

  if (ShouldIncludeStackTrace(aData->mMethodName)) {
    // Now define the "stacktrace" property on eventObj.  There are two cases
    // here.  Either we came from a worker and have a reified stack, or we want
    // to define a getter that will lazily reify the stack.
    if (aData->mReifiedStack) {
      JS::Rooted<JS::Value> stacktrace(aCx);
      if (NS_WARN_IF(!ToJSValue(aCx, *aData->mReifiedStack, &stacktrace)) ||
          NS_WARN_IF(!JS_DefineProperty(aCx, eventObj, "stacktrace", stacktrace,
                                        JSPROP_ENUMERATE))) {
        return false;
      }
    } else {
      JSFunction* fun =
          js::NewFunctionWithReserved(aCx, LazyStackGetter, 0, 0, "stacktrace");
      if (NS_WARN_IF(!fun)) {
        return false;
      }

      JS::Rooted<JSObject*> funObj(aCx, JS_GetFunctionObject(fun));

      // We want to store our stack in the function and have it stay alive.  But
      // we also need sane access to the C++ nsIStackFrame.  So store both a JS
      // wrapper and the raw pointer: the former will keep the latter alive.
      JS::Rooted<JS::Value> stackVal(aCx);
      nsresult rv = nsContentUtils::WrapNative(aCx, aData->mStack, &stackVal);
      if (NS_WARN_IF(NS_FAILED(rv))) {
        return false;
      }

      js::SetFunctionNativeReserved(funObj, SLOT_STACKOBJ, stackVal);
      js::SetFunctionNativeReserved(funObj, SLOT_RAW_STACK,
                                    JS::PrivateValue(aData->mStack.get()));

      if (NS_WARN_IF(!JS_DefineProperty(aCx, eventObj, "stacktrace", funObj,
                                        nullptr, JSPROP_ENUMERATE))) {
        return false;
      }
    }
  }

  return true;
}

namespace {

// Helper method for ProcessArguments. Flushes output, if non-empty, to
// aSequence.
bool FlushOutput(JSContext* aCx, Sequence<JS::Value>& aSequence,
                 nsString& aOutput) {
  if (!aOutput.IsEmpty()) {
    JS::Rooted<JSString*> str(
        aCx, JS_NewUCStringCopyN(aCx, aOutput.get(), aOutput.Length()));
    if (NS_WARN_IF(!str)) {
      return false;
    }

    if (NS_WARN_IF(!aSequence.AppendElement(JS::StringValue(str), fallible))) {
      return false;
    }

    aOutput.Truncate();
  }

  return true;
}

}  // namespace

static void MakeFormatString(nsCString& aFormat, int32_t aInteger,
                             int32_t aMantissa, char aCh) {
  aFormat.Append('%');
  if (aInteger >= 0) {
    aFormat.AppendInt(aInteger);
  }

  if (aMantissa >= 0) {
    aFormat.Append('.');
    aFormat.AppendInt(aMantissa);
  }

  aFormat.Append(aCh);
}

// If the first JS::Value of the array is a string, this method uses it to
// format a string. The supported sequences are:
//   %s    - string
//   %d,%i - integer
//   %f    - double
//   %o,%O - a JS object.
//   %c    - style string.
// The output is an array where any object is a separated item, the rest is
// unified in a format string.
// Example if the input is:
//   "string: %s, integer: %d, object: %o, double: %f", 's', 1, window, 0.9
// The output will be:
//   [ "string: s, integer: 1, object: ", window, ", double: 0.9" ]
//
// The aStyles array is populated with the style strings that the function
// finds based the format string. The index of the styles matches the indexes
// of elements that need the custom styling from aSequence. For elements with
// no custom styling the array is padded with null elements.
static bool ProcessArguments(JSContext* aCx, const Sequence<JS::Value>& aData,
                             Sequence<JS::Value>& aSequence,
                             Sequence<nsString>& aStyles) {
  // This method processes the arguments as format strings (%d, %i, %s...)
  // only if the first element of them is a valid and not-empty string.

  if (aData.IsEmpty()) {
    return true;
  }

  if (aData.Length() == 1 || !aData[0].isString()) {
    return aSequence.AppendElements(aData, fallible);
  }

  JS::Rooted<JS::Value> format(aCx, aData[0]);
  JS::Rooted<JSString*> jsString(aCx, JS::ToString(aCx, format));
  if (NS_WARN_IF(!jsString)) {
    return false;
  }

  nsAutoJSString string;
  if (NS_WARN_IF(!string.init(aCx, jsString))) {
    return false;
  }

  if (string.IsEmpty()) {
    return aSequence.AppendElements(aData, fallible);
  }

  nsString::const_iterator start, end;
  string.BeginReading(start);
  string.EndReading(end);

  nsString output;
  uint32_t index = 1;

  while (start != end) {
    if (*start != '%') {
      output.Append(*start);
      ++start;
      continue;
    }

    ++start;
    if (start == end) {
      output.Append('%');
      break;
    }

    if (*start == '%') {
      output.Append(*start);
      ++start;
      continue;
    }

    nsAutoString tmp;
    tmp.Append('%');

    int32_t integer = -1;
    int32_t mantissa = -1;

    // Let's parse %<number>.<number> for %d and %f
    if (*start >= '0' && *start <= '9') {
      integer = 0;

      do {
        integer = integer * 10 + *start - '0';
        tmp.Append(*start);
        ++start;
      } while (*start >= '0' && *start <= '9' && start != end);
    }

    if (start == end) {
      output.Append(tmp);
      break;
    }

    if (*start == '.') {
      tmp.Append(*start);
      ++start;

      if (start == end) {
        output.Append(tmp);
        break;
      }

      // '.' must be followed by a number.
      if (*start < '0' || *start > '9') {
        output.Append(tmp);
        continue;
      }

      mantissa = 0;

      do {
        mantissa = mantissa * 10 + *start - '0';
        tmp.Append(*start);
        ++start;
      } while (*start >= '0' && *start <= '9' && start != end);

      if (start == end) {
        output.Append(tmp);
        break;
      }
    }

    char ch = *start;
    tmp.Append(ch);
    ++start;

    switch (ch) {
      case 'o':
      case 'O': {
        if (NS_WARN_IF(!FlushOutput(aCx, aSequence, output))) {
          return false;
        }

        JS::Rooted<JS::Value> v(aCx);
        if (index < aData.Length()) {
          v = aData[index++];
        }

        if (NS_WARN_IF(!aSequence.AppendElement(v, fallible))) {
          return false;
        }

        break;
      }

      case 'c': {
        // If there isn't any output but there's already a style, then
        // discard the previous style and use the next one instead.
        if (output.IsEmpty() && !aStyles.IsEmpty()) {
          aStyles.RemoveLastElement();
        }

        if (NS_WARN_IF(!FlushOutput(aCx, aSequence, output))) {
          return false;
        }

        if (index < aData.Length()) {
          JS::Rooted<JS::Value> v(aCx, aData[index++]);
          JS::Rooted<JSString*> jsString(aCx, JS::ToString(aCx, v));
          if (NS_WARN_IF(!jsString)) {
            return false;
          }

          int32_t diff = aSequence.Length() - aStyles.Length();
          if (diff > 0) {
            for (int32_t i = 0; i < diff; i++) {
              if (NS_WARN_IF(!aStyles.AppendElement(VoidString(), fallible))) {
                return false;
              }
            }
          }

          nsAutoJSString string;
          if (NS_WARN_IF(!string.init(aCx, jsString))) {
            return false;
          }

          if (NS_WARN_IF(!aStyles.AppendElement(string, fallible))) {
            return false;
          }
        }
        break;
      }

      case 's':
        if (index < aData.Length()) {
          JS::Rooted<JS::Value> value(aCx, aData[index++]);
          JS::Rooted<JSString*> jsString(aCx, JS::ToString(aCx, value));
          if (NS_WARN_IF(!jsString)) {
            return false;
          }

          nsAutoJSString v;
          if (NS_WARN_IF(!v.init(aCx, jsString))) {
            return false;
          }

          output.Append(v);
        }
        break;

      case 'd':
      case 'i':
        if (index < aData.Length()) {
          JS::Rooted<JS::Value> value(aCx, aData[index++]);

          if (value.isBigInt()) {
            JS::Rooted<JSString*> jsString(aCx, JS::ToString(aCx, value));
            if (NS_WARN_IF(!jsString)) {
              return false;
            }

            nsAutoJSString v;
            if (NS_WARN_IF(!v.init(aCx, jsString))) {
              return false;
            }
            output.Append(v);
            break;
          }

          int32_t v;
          if (NS_WARN_IF(!JS::ToInt32(aCx, value, &v))) {
            return false;
          }

          nsCString format;
          MakeFormatString(format, integer, mantissa, 'd');
          output.AppendPrintf(format.get(), v);
        }
        break;

      case 'f':
        if (index < aData.Length()) {
          JS::Rooted<JS::Value> value(aCx, aData[index++]);

          double v;
          if (NS_WARN_IF(!JS::ToNumber(aCx, value, &v))) {
            return false;
          }

          // nspr returns "nan", but we want to expose it as "NaN"
          if (std::isnan(v)) {
            output.AppendFloat(v);
          } else {
            nsCString format;
            MakeFormatString(format, integer, std::min(mantissa, 15), 'f');
            output.AppendPrintf(format.get(), v);
          }
        }
        break;

      default:
        output.Append(tmp);
        break;
    }
  }

  if (NS_WARN_IF(!FlushOutput(aCx, aSequence, output))) {
    return false;
  }

  // Discard trailing style element if there is no output to apply it to.
  if (aStyles.Length() > aSequence.Length()) {
    aStyles.TruncateLength(aSequence.Length());
  }

  // The rest of the array, if unused by the format string.
  for (; index < aData.Length(); ++index) {
    if (NS_WARN_IF(!aSequence.AppendElement(aData[index], fallible))) {
      return false;
    }
  }

  return true;
}

// Stringify and Concat all the JS::Value in a single string using ' ' as
// separator. The new group name will be stored in aGroupStack array.
static void ComposeAndStoreGroupName(JSContext* aCx,
                                     const Sequence<JS::Value>& aData,
                                     nsAString& aName,
                                     nsTArray<nsString>* aGroupStack) {
  StringJoinAppend(
      aName, u" "_ns, aData, [aCx](nsAString& dest, const JS::Value& valueRef) {
        JS::Rooted<JS::Value> value(aCx, valueRef);
        JS::Rooted<JSString*> jsString(aCx, JS::ToString(aCx, value));
        if (!jsString) {
          return;
        }

        nsAutoJSString string;
        if (!string.init(aCx, jsString)) {
          return;
        }

        dest.Append(string);
      });

  aGroupStack->AppendElement(aName);
}

// Remove the last group name and return that name. It returns false if
// aGroupStack is empty.
static bool UnstoreGroupName(nsAString& aName,
                             nsTArray<nsString>* aGroupStack) {
  if (aGroupStack->IsEmpty()) {
    return false;
  }

  aName = aGroupStack->PopLastElement();
  return true;
}

Console::TimerStatus Console::StartTimer(JSContext* aCx, const JS::Value& aName,
                                         DOMHighResTimeStamp aTimestamp,
--> --------------------

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