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/Telemetry.h"
  12 #include "mozilla/dom/WorkerPrivate.h"
  13
  14 /**
  15  * We have to use macros here because our leak analysis tool things we are
  16  * leaking strings when we have |static const nsString|. Sad :(
  17  */
  18 #define CHANGE_EVENT_NAME u"typechange"_ns
  19
  20 namespace mozilla::dom::network {
  21
  22 // Don't use |Connection| alone, since that confuses nsTraceRefcnt since
  23 // we're not the only class with that name.
  24 NS_IMPL_ISUPPORTS_INHERITED0(dom::network::Connection, DOMEventTargetHelper)
  25
  26 Connection::Connection(nsPIDOMWindowInner* aWindow,
  27                        bool aShouldResistFingerprinting)
  28     : DOMEventTargetHelper(aWindow),
  29       mShouldResistFingerprinting(aShouldResistFingerprinting),
  30       mType(static_cast<ConnectionType>(kDefaultType)),
  31       mIsWifi(kDefaultIsWifi),
  32       mDHCPGateway(kDefaultDHCPGateway),
  33       mBeenShutDown(false) {
  34   Telemetry::Accumulate(Telemetry::NETWORK_CONNECTION_COUNT, 1);
  35 }
  36
  37 Connection::~Connection() {
  38   NS_ASSERT_OWNINGTHREAD(Connection);
  39   MOZ_ASSERT(mBeenShutDown);
  40 }
  41
  42 void Connection::Shutdown() {
  43   NS_ASSERT_OWNINGTHREAD(Connection);
  44
  45   if (mBeenShutDown) {
  46     return;
  47   }
  48
  49   mBeenShutDown = true;
  50   ShutdownInternal();
  51 }
  52
  53 JSObject* Connection::WrapObject(JSContext* aCx,
  54                                  JS::Handle<JSObject*> aGivenProto) {
  55   return NetworkInformation_Binding::Wrap(aCx, this, aGivenProto);
  56 }
  57
  58 void Connection::Update(ConnectionType aType, bool aIsWifi,
  59                         uint32_t aDHCPGateway, bool aNotify) {
  60   NS_ASSERT_OWNINGTHREAD(Connection);
  61
  62   ConnectionType previousType = mType;
  63
  64   mType = aType;
  65   mIsWifi = aIsWifi;
  66   mDHCPGateway = aDHCPGateway;
  67
  68   if (aNotify && previousType != aType && !mShouldResistFingerprinting) {
  69     DispatchTrustedEvent(CHANGE_EVENT_NAME);
  70   }
  71 }
  72
  73 /* static */
  74 Connection* Connection::CreateForWindow(nsPIDOMWindowInner* aWindow,
  75                                         bool aShouldResistFingerprinting) {
  76   MOZ_ASSERT(aWindow);
  77   return new ConnectionMainThread(aWindow, aShouldResistFingerprinting);
  78 }
  79
  80 /* static */
  81 already_AddRefed<Connection> Connection::CreateForWorker(
  82     WorkerPrivate* aWorkerPrivate, ErrorResult& aRv) {
  83   MOZ_ASSERT(aWorkerPrivate);
  84   aWorkerPrivate->AssertIsOnWorkerThread();
  85   return ConnectionWorker::Create(aWorkerPrivate, aRv);
  86 }
  87
  88 }  // namespace mozilla::dom::network