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/* -*- 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/WindowsVersion.h"
#endif
#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)
#include <stdlib.h>
#endif
#if (defined(XP_WIN) || defined(XP_MACOSX)) && defined(MOZ_CONTENT_SANDBOX)
#include "mozilla/Preferences.h"
#include "nsAppDirectoryServiceDefs.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 bool
IsSandboxTempDirRequired()
{
// On Windows, a sandbox-writable temp directory is only used
// for Vista or later with sandbox pref level >= 1.
return (IsVistaOrLater() &&
(Preferences::GetInt("security.sandbox.content.level") >= 1));
}
static void
SetTmpEnvironmentVariable(nsIFile* aValue)
{
// Save the TMP environment variable so that is is picked up by GetTempPath().
// Note that we specifically write to the TMP variable, as that is the first
// variable that is checked by GetTempPath() to determine its output.
nsAutoString fullTmpPath;
nsresult rv = aValue->GetPath(fullTmpPath);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
Unused << NS_WARN_IF(!SetEnvironmentVariableW(L"TMP", fullTmpPath.get()));
// We also set TEMP in case there is naughty third-party code that is
// referencing the environment variable directly.
Unused << NS_WARN_IF(!SetEnvironmentVariableW(L"TEMP", fullTmpPath.get()));
}
#endif
#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)
static bool
IsSandboxTempDirRequired()
{
// On OSX, use the sandbox-writable temp when the pref level >= 1.
return (Preferences::GetInt("security.sandbox.content.level") >= 1);
}
static void
SetTmpEnvironmentVariable(nsIFile* aValue)
{
nsAutoCString fullTmpPath;
nsresult rv = aValue->GetNativePath(fullTmpPath);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
Unused << NS_WARN_IF(setenv("TMPDIR", fullTmpPath.get(), 1) != 0);
}
#endif
#if (defined(XP_WIN) || defined(XP_MACOSX)) && defined(MOZ_CONTENT_SANDBOX)
static void
SetUpSandboxEnvironment()
{
MOZ_ASSERT(nsDirectoryService::gService,
"SetUpSandboxEnvironment relies on nsDirectoryService being initialized");
if (!IsSandboxTempDirRequired()) {
return;
}
nsCOMPtr<nsIFile> sandboxedContentTemp;
nsresult rv =
nsDirectoryService::gService->Get(NS_APP_CONTENT_PROCESS_TEMP_DIR,
NS_GET_IID(nsIFile),
getter_AddRefs(sandboxedContentTemp));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Change the gecko defined temp directory to our sandbox-writable 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, sandboxedContentTemp);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
SetTmpEnvironmentVariable(sandboxedContentTemp);
}
#endif
void
ContentProcess::SetAppDir(const nsACString& aPath)
{
mXREEmbed.SetAppDir(aPath);
}
#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)
void
ContentProcess::SetProfile(const nsACString& aProfile)
{
bool flag;
nsresult rv =
XRE_GetFileFromPath(aProfile.BeginReading(), getter_AddRefs(mProfileDir));
if (NS_FAILED(rv) ||
NS_FAILED(mProfileDir->Exists(&flag)) || !flag) {
NS_WARNING("Invalid profile directory passed to content process.");
mProfileDir = nullptr;
}
}
#endif
bool
ContentProcess::Init()
{
mContent.Init(IOThreadChild::message_loop(),
ParentPid(),
IOThreadChild::channel());
mXREEmbed.Start();
mContent.InitXPCOM();
mContent.InitGraphicsDeviceData();
#if (defined(XP_MACOSX)) && defined(MOZ_CONTENT_SANDBOX)
mContent.SetProfileDir(mProfileDir);
#endif
#if (defined(XP_WIN) || defined(XP_MACOSX)) && 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
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