dom/network/TCPSocketChild.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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include <algorithm>
   8 #include "TCPSocketChild.h"
   9 #include "mozilla/HoldDropJSObjects.h"
  10 #include "mozilla/Unused.h"
  11 #include "mozilla/UniquePtr.h"
  12 #include "mozilla/net/NeckoChild.h"
  13 #include "mozilla/dom/PBrowserChild.h"
  14 #include "mozilla/dom/BrowserChild.h"
  15 #include "nsITCPSocketCallback.h"
  16 #include "TCPSocket.h"
  17 #include "nsContentUtils.h"
  18 #include "js/ArrayBuffer.h"  // JS::NewArrayBufferWithContents
  19 #include "js/RootingAPI.h"   // JS::MutableHandle
  20 #include "js/Utility.h"  // js::ArrayBufferContentsArena, JS::FreePolicy, js_pod_arena_malloc
  21 #include "js/Value.h"  // JS::Value
  22
  23 using mozilla::net::gNeckoChild;
  24
  25 namespace IPC {
  26
  27 bool DeserializeArrayBuffer(JSContext* cx, const nsTArray<uint8_t>& aBuffer,
  28                             JS::MutableHandle<JS::Value> aVal) {
  29   mozilla::UniquePtr<uint8_t[], JS::FreePolicy> data(
  30       js_pod_arena_malloc<uint8_t>(js::ArrayBufferContentsArena,
  31                                    aBuffer.Length()));
  32   if (!data) return false;
  33   memcpy(data.get(), aBuffer.Elements(), aBuffer.Length());
  34
  35   JSObject* obj =
  36       JS::NewArrayBufferWithContents(cx, aBuffer.Length(), std::move(data));
  37   if (!obj) return false;
  38
  39   aVal.setObject(*obj);
  40   return true;
  41 }
  42
  43 }  // namespace IPC
  44
  45 namespace mozilla::dom {
  46
  47 NS_IMPL_CYCLE_COLLECTION_CLASS(TCPSocketChildBase)
  48
  49 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(TCPSocketChildBase)
  50   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSocket)
  51 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
  52
  53 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(TCPSocketChildBase)
  54   NS_IMPL_CYCLE_COLLECTION_UNLINK(mSocket)
  55 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
  56
  57 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(TCPSocketChildBase)
  58 NS_IMPL_CYCLE_COLLECTION_TRACE_END
  59
  60 NS_IMPL_CYCLE_COLLECTING_ADDREF(TCPSocketChildBase)
  61 NS_IMPL_CYCLE_COLLECTING_RELEASE(TCPSocketChildBase)
  62
  63 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TCPSocketChildBase)
  64   NS_INTERFACE_MAP_ENTRY(nsISupports)
  65 NS_INTERFACE_MAP_END
  66
  67 TCPSocketChildBase::TCPSocketChildBase() : mIPCOpen(false) {
  68   mozilla::HoldJSObjects(this);
  69 }
  70
  71 TCPSocketChildBase::~TCPSocketChildBase() { mozilla::DropJSObjects(this); }
  72
  73 NS_IMETHODIMP_(MozExternalRefCountType) TCPSocketChild::Release(void) {
  74   nsrefcnt refcnt = TCPSocketChildBase::Release();
  75   if (refcnt == 1 && mIPCOpen) {
  76     PTCPSocketChild::SendRequestDelete();
  77     return 1;
  78   }
  79   return refcnt;
  80 }
  81
  82 TCPSocketChild::TCPSocketChild(const nsAString& aHost, const uint16_t& aPort,
  83                                nsISerialEventTarget* aTarget)
  84     : mHost(aHost), mPort(aPort), mIPCEventTarget(aTarget) {}
  85
  86 void TCPSocketChild::SendOpen(nsITCPSocketCallback* aSocket, bool aUseSSL,
  87                               bool aUseArrayBuffers) {
  88   mSocket = aSocket;
  89
  90   AddIPDLReference();
  91   gNeckoChild->SendPTCPSocketConstructor(this, mHost, mPort);
  92   PTCPSocketChild::SendOpen(mHost, mPort, aUseSSL, aUseArrayBuffers);
  93 }
  94
  95 void TCPSocketChildBase::ReleaseIPDLReference() {
  96   MOZ_ASSERT(mIPCOpen);
  97   mIPCOpen = false;
  98   mSocket = nullptr;
  99   this->Release();
 100 }
 101
 102 void TCPSocketChildBase::AddIPDLReference() {
 103   MOZ_ASSERT(!mIPCOpen);
 104   mIPCOpen = true;
 105   this->AddRef();
 106 }
 107
 108 TCPSocketChild::~TCPSocketChild() = default;
 109
 110 mozilla::ipc::IPCResult TCPSocketChild::RecvUpdateBufferedAmount(
 111     const uint32_t& aBuffered, const uint32_t& aTrackingNumber) {
 112   mSocket->UpdateBufferedAmount(aBuffered, aTrackingNumber);
 113   return IPC_OK();
 114 }
 115
 116 mozilla::ipc::IPCResult TCPSocketChild::RecvCallback(
 117     const nsString& aType, const CallbackData& aData,
 118     const uint32_t& aReadyState) {
 119   mSocket->UpdateReadyState(aReadyState);
 120
 121   if (aData.type() == CallbackData::Tvoid_t) {
 122     mSocket->FireEvent(aType);
 123
 124   } else if (aData.type() == CallbackData::TTCPError) {
 125     const TCPError& err(aData.get_TCPError());
 126     mSocket->FireErrorEvent(err.name(), err.message(), err.errorCode());
 127
 128   } else if (aData.type() == CallbackData::TSendableData) {
 129     const SendableData& data = aData.get_SendableData();
 130
 131     if (data.type() == SendableData::TArrayOfuint8_t) {
 132       mSocket->FireDataArrayEvent(aType, data.get_ArrayOfuint8_t());
 133     } else if (data.type() == SendableData::TnsCString) {
 134       mSocket->FireDataStringEvent(aType, data.get_nsCString());
 135     } else {
 136       MOZ_CRASH("Invalid callback data type!");
 137     }
 138   } else {
 139     MOZ_CRASH("Invalid callback type!");
 140   }
 141   return IPC_OK();
 142 }
 143
 144 void TCPSocketChild::SendSend(const nsACString& aData) {
 145   SendData(nsCString(aData));
 146 }
 147
 148 void TCPSocketChild::SendSend(nsTArray<uint8_t>&& aData) {
 149   SendData(SendableData{std::move(aData)});
 150 }
 151
 152 void TCPSocketChild::SetSocket(TCPSocket* aSocket) { mSocket = aSocket; }
 153
 154 void TCPSocketChild::GetHost(nsAString& aHost) { aHost = mHost; }
 155
 156 void TCPSocketChild::GetPort(uint16_t* aPort) const { *aPort = mPort; }
 157
 158 mozilla::ipc::IPCResult TCPSocketChild::RecvRequestDelete() {
 159   mozilla::Unused << Send__delete__(this);
 160   return IPC_OK();
 161 }
 162
 163 }  // namespace mozilla::dom