ipc/glue/UtilityProcessImpl.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 #include "UtilityProcessImpl.h"
   7
   8 #include "mozilla/ipc/IOThreadChild.h"
   9 #include "mozilla/GeckoArgs.h"
  10
  11 #if defined(OS_WIN) && defined(MOZ_SANDBOX)
  12 #  include "mozilla/sandboxTarget.h"
  13 #endif
  14
  15 namespace mozilla::ipc {
  16
  17 UtilityProcessImpl::UtilityProcessImpl(ProcessId aParentPid)
  18     : ProcessChild(aParentPid) {
  19   mUtility = new UtilityProcessChild();
  20 }
  21
  22 UtilityProcessImpl::~UtilityProcessImpl() { mUtility = nullptr; }
  23
  24 bool UtilityProcessImpl::Init(int aArgc, char* aArgv[]) {
  25 #if defined(MOZ_SANDBOX) && defined(OS_WIN)
  26   // We delay load winmm.dll so that its dependencies don't interfere with COM
  27   // initialization when win32k is locked down. We need to load it before we
  28   // lower the sandbox in processes where the policy will prevent loading.
  29   ::LoadLibraryW(L"winmm.dll");
  30   mozilla::SandboxTarget::Instance()->StartSandbox();
  31 #endif
  32
  33   Maybe<const char*> parentBuildID =
  34       geckoargs::sParentBuildID.Get(aArgc, aArgv);
  35   if (parentBuildID.isNothing()) {
  36     return false;
  37   }
  38
  39   Maybe<uint64_t> sandboxingKind = geckoargs::sSandboxingKind.Get(aArgc, aArgv);
  40   if (sandboxingKind.isNothing()) {
  41     return false;
  42   }
  43
  44   if (*sandboxingKind >= SandboxingKind::COUNT) {
  45     return false;
  46   }
  47
  48   if (!ProcessChild::InitPrefs(aArgc, aArgv)) {
  49     return false;
  50   }
  51
  52   return mUtility->Init(ParentPid(), nsCString(*parentBuildID), *sandboxingKind,
  53                         IOThreadChild::TakeInitialPort());
  54 }
  55
  56 void UtilityProcessImpl::CleanUp() { NS_ShutdownXPCOM(nullptr); }
  57
  58 }  // namespace mozilla::ipc