зеркало из https://github.com/mozilla/gecko-dev.git
144 строки
4.0 KiB
C++
144 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ipc/IOThreadChild.h"
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#include "ContentProcess.h"
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#if defined(XP_WIN) && defined(MOZ_CONTENT_SANDBOX)
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#include "mozilla/WindowsVersion.h"
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#endif
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#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)
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#include <stdlib.h>
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#endif
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#if (defined(XP_WIN) || defined(XP_MACOSX)) && defined(MOZ_CONTENT_SANDBOX)
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#include "mozilla/Preferences.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "nsDirectoryService.h"
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#include "nsDirectoryServiceDefs.h"
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#endif
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using mozilla::ipc::IOThreadChild;
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namespace mozilla {
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namespace dom {
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#if defined(XP_WIN) && defined(MOZ_CONTENT_SANDBOX)
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static bool
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IsSandboxTempDirRequired()
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{
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// On Windows, a sandbox-writable temp directory is only used
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// for Vista or later with sandbox pref level >= 1.
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return (IsVistaOrLater() &&
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(Preferences::GetInt("security.sandbox.content.level") >= 1));
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}
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static void
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SetTmpEnvironmentVariable(nsIFile* aValue)
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{
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// Save the TMP environment variable so that is is picked up by GetTempPath().
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// Note that we specifically write to the TMP variable, as that is the first
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// variable that is checked by GetTempPath() to determine its output.
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nsAutoString fullTmpPath;
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nsresult rv = aValue->GetPath(fullTmpPath);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return;
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}
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NS_WARN_IF(!SetEnvironmentVariableW(L"TMP", fullTmpPath.get()));
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// We also set TEMP in case there is naughty third-party code that is
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// referencing the environment variable directly.
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NS_WARN_IF(!SetEnvironmentVariableW(L"TEMP", fullTmpPath.get()));
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}
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#endif
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#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)
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static bool
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IsSandboxTempDirRequired()
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{
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// On OSX, use the sandbox-writable temp when the pref level >= 1.
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return (Preferences::GetInt("security.sandbox.content.level") >= 1);
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}
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static void
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SetTmpEnvironmentVariable(nsIFile* aValue)
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{
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nsAutoCString fullTmpPath;
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nsresult rv = aValue->GetNativePath(fullTmpPath);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return;
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}
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NS_WARN_IF(setenv("TMPDIR", fullTmpPath.get(), 1) != 0);
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}
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#endif
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#if (defined(XP_WIN) || defined(XP_MACOSX)) && defined(MOZ_CONTENT_SANDBOX)
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static void
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SetUpSandboxEnvironment()
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{
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MOZ_ASSERT(nsDirectoryService::gService,
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"SetUpSandboxEnvironment relies on nsDirectoryService being initialized");
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if (!IsSandboxTempDirRequired()) {
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return;
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}
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nsCOMPtr<nsIFile> sandboxedContentTemp;
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nsresult rv =
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nsDirectoryService::gService->Get(NS_APP_CONTENT_PROCESS_TEMP_DIR,
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NS_GET_IID(nsIFile),
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getter_AddRefs(sandboxedContentTemp));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return;
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}
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// Change the gecko defined temp directory to our sandbox-writable one.
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// Undefine returns a failure if the property is not already set.
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Unused << nsDirectoryService::gService->Undefine(NS_OS_TEMP_DIR);
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rv = nsDirectoryService::gService->Set(NS_OS_TEMP_DIR, sandboxedContentTemp);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return;
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}
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SetTmpEnvironmentVariable(sandboxedContentTemp);
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}
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#endif
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void
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ContentProcess::SetAppDir(const nsACString& aPath)
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{
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mXREEmbed.SetAppDir(aPath);
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}
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bool
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ContentProcess::Init()
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{
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mContent.Init(IOThreadChild::message_loop(),
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ParentPid(),
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IOThreadChild::channel());
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mXREEmbed.Start();
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mContent.InitXPCOM();
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mContent.InitGraphicsDeviceData();
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#if (defined(XP_WIN) || defined(XP_MACOSX)) && defined(MOZ_CONTENT_SANDBOX)
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SetUpSandboxEnvironment();
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#endif
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return true;
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}
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// Note: CleanUp() never gets called in non-debug builds because we exit early
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// in ContentChild::ActorDestroy().
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void
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ContentProcess::CleanUp()
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{
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mXREEmbed.Stop();
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}
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} // namespace dom
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} // namespace mozilla
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