dom/network/Connection.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "Connection.h"
   8 #include "ConnectionMainThread.h"
   9 #include "ConnectionWorker.h"
  10 #include "Constants.h"
  11 #include "mozilla/dom/WorkerPrivate.h"
  12
  13 /**
  14  * We have to use macros here because our leak analysis tool things we are
  15  * leaking strings when we have |static const nsString|. Sad :(
  16  */
  17 #define CHANGE_EVENT_NAME u"typechange"_ns
  18
  19 namespace mozilla::dom::network {
  20
  21 // Don't use |Connection| alone, since that confuses nsTraceRefcnt since
  22 // we're not the only class with that name.
  23 NS_IMPL_ISUPPORTS_INHERITED0(dom::network::Connection, DOMEventTargetHelper)
  24
  25 Connection::Connection(nsPIDOMWindowInner* aWindow,
  26                        bool aShouldResistFingerprinting)
  27     : DOMEventTargetHelper(aWindow),
  28       mShouldResistFingerprinting(aShouldResistFingerprinting),
  29       mType(static_cast<ConnectionType>(kDefaultType)),
  30       mIsWifi(kDefaultIsWifi),
  31       mDHCPGateway(kDefaultDHCPGateway),
  32       mBeenShutDown(false) {}
  33
  34 Connection::~Connection() {
  35   NS_ASSERT_OWNINGTHREAD(Connection);
  36   MOZ_ASSERT(mBeenShutDown);
  37 }
  38
  39 void Connection::Shutdown() {
  40   NS_ASSERT_OWNINGTHREAD(Connection);
  41
  42   if (mBeenShutDown) {
  43     return;
  44   }
  45
  46   mBeenShutDown = true;
  47   ShutdownInternal();
  48 }
  49
  50 JSObject* Connection::WrapObject(JSContext* aCx,
  51                                  JS::Handle<JSObject*> aGivenProto) {
  52   return NetworkInformation_Binding::Wrap(aCx, this, aGivenProto);
  53 }
  54
  55 void Connection::Update(ConnectionType aType, bool aIsWifi,
  56                         uint32_t aDHCPGateway, bool aNotify) {
  57   NS_ASSERT_OWNINGTHREAD(Connection);
  58
  59   ConnectionType previousType = mType;
  60
  61   mType = aType;
  62   mIsWifi = aIsWifi;
  63   mDHCPGateway = aDHCPGateway;
  64
  65   if (aNotify && previousType != aType && !mShouldResistFingerprinting) {
  66     DispatchTrustedEvent(CHANGE_EVENT_NAME);
  67   }
  68 }
  69
  70 /* static */
  71 Connection* Connection::CreateForWindow(nsPIDOMWindowInner* aWindow,
  72                                         bool aShouldResistFingerprinting) {
  73   MOZ_ASSERT(aWindow);
  74   return new ConnectionMainThread(aWindow, aShouldResistFingerprinting);
  75 }
  76
  77 /* static */
  78 already_AddRefed<Connection> Connection::CreateForWorker(
  79     WorkerPrivate* aWorkerPrivate, ErrorResult& aRv) {
  80   MOZ_ASSERT(aWorkerPrivate);
  81   aWorkerPrivate->AssertIsOnWorkerThread();
  82   return ConnectionWorker::Create(aWorkerPrivate, aRv);
  83 }
  84
  85 }  // namespace mozilla::dom::network