gecko-dev/dom/ipc/ContentProcess.cpp

102 lines
2.8 KiB
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/ipc/IOThreadChild.h"
#include "ContentProcess.h"
#if defined(XP_WIN) && defined(MOZ_CONTENT_SANDBOX)
#include "mozilla/Preferences.h"
#include "mozilla/WindowsVersion.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#endif
using mozilla::ipc::IOThreadChild;
namespace mozilla {
namespace dom {
#if defined(XP_WIN) && defined(MOZ_CONTENT_SANDBOX)
static void
SetUpSandboxEnvironment()
{
MOZ_ASSERT(nsDirectoryService::gService,
"SetUpSandboxEnvironment relies on nsDirectoryService being initialized");
// A low integrity temp only currently makes sense for Vista or Later and
// sandbox pref level >= 1.
if (!IsVistaOrLater() ||
Preferences::GetInt("security.sandbox.content.level") < 1) {
return;
}
nsAdoptingString tempDirSuffix =
Preferences::GetString("security.sandbox.content.tempDirSuffix");
if (tempDirSuffix.IsEmpty()) {
NS_WARNING("Low integrity temp suffix pref not set.");
return;
}
// Get the base low integrity Mozilla temp directory.
nsCOMPtr<nsIFile> lowIntegrityTemp;
nsresult rv = nsDirectoryService::gService->Get(NS_WIN_LOW_INTEGRITY_TEMP_BASE,
NS_GET_IID(nsIFile),
getter_AddRefs(lowIntegrityTemp));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Append our profile specific temp name.
rv = lowIntegrityTemp->Append(NS_LITERAL_STRING("Temp-") + tempDirSuffix);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Change the gecko defined temp directory to our low integrity one.
// Undefine returns a failure if the property is not already set.
Unused << nsDirectoryService::gService->Undefine(NS_OS_TEMP_DIR);
rv = nsDirectoryService::gService->Set(NS_OS_TEMP_DIR, lowIntegrityTemp);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
}
#endif
void
ContentProcess::SetAppDir(const nsACString& aPath)
{
mXREEmbed.SetAppDir(aPath);
}
bool
ContentProcess::Init()
{
mContent.Init(IOThreadChild::message_loop(),
ParentPid(),
IOThreadChild::channel());
mXREEmbed.Start();
mContent.InitXPCOM();
mContent.InitGraphicsDeviceData();
#if defined(XP_WIN) && defined(MOZ_CONTENT_SANDBOX)
SetUpSandboxEnvironment();
#endif
return true;
}
// Note: CleanUp() never gets called in non-debug builds because we exit early
// in ContentChild::ActorDestroy().
void
ContentProcess::CleanUp()
{
mXREEmbed.Stop();
}
} // namespace dom
} // namespace mozilla