chrome/nacl/nacl_main_platform_delegate_win.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/nacl/nacl_main_platform_delegate.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/files/file_path.h"
   9 #include "base/logging.h"
  10 #include "base/native_library.h"
  11 #include "components/nacl/common/nacl_switches.h"
  12 #include "sandbox/win/src/sandbox.h"
  13
  14 NaClMainPlatformDelegate::NaClMainPlatformDelegate(
  15     const content::MainFunctionParams& parameters)
  16     : parameters_(parameters), sandbox_test_module_(NULL) {
  17 }
  18
  19 NaClMainPlatformDelegate::~NaClMainPlatformDelegate() {
  20 }
  21
  22 void NaClMainPlatformDelegate::PlatformInitialize() {
  23   // Be mindful of what resources you acquire here. They can be used by
  24   // malicious code if the renderer gets compromised.
  25 }
  26
  27 void NaClMainPlatformDelegate::PlatformUninitialize() {
  28 }
  29
  30 void NaClMainPlatformDelegate::InitSandboxTests(bool no_sandbox) {
  31   const CommandLine& command_line = parameters_.command_line;
  32
  33   DVLOG(1) << "Started NaClLdr with " << command_line.GetCommandLineString();
  34
  35   sandbox::TargetServices* target_services =
  36       parameters_.sandbox_info->target_services;
  37
  38   if (target_services && !no_sandbox) {
  39     base::FilePath test_dll_name =
  40       command_line.GetSwitchValuePath(switches::kTestNaClSandbox);
  41     if (!test_dll_name.empty()) {
  42       // At this point, hack on the suffix according to with bitness
  43       // of your windows process.
  44 #if defined(_WIN64)
  45       DVLOG(1) << "Using 64-bit test dll\n";
  46       test_dll_name = test_dll_name.InsertBeforeExtension(L"64");
  47       test_dll_name = test_dll_name.ReplaceExtension(L"dll");
  48 #else
  49       DVLOG(1) << "Using 32-bit test dll\n";
  50       test_dll_name = test_dll_name.ReplaceExtension(L"dll");
  51 #endif
  52       DVLOG(1) << "Loading test lib " << test_dll_name.value() << "\n";
  53       sandbox_test_module_ = base::LoadNativeLibrary(test_dll_name, NULL);
  54       CHECK(sandbox_test_module_);
  55       VLOG(1) << "Testing NaCl sandbox\n";
  56     }
  57   }
  58 }
  59
  60 void NaClMainPlatformDelegate::EnableSandbox() {
  61   sandbox::TargetServices* target_services =
  62       parameters_.sandbox_info->target_services;
  63
  64   CHECK(target_services) << "NaCl-Win EnableSandbox: No Target Services!";
  65   // Cause advapi32 to load before the sandbox is turned on.
  66   unsigned int dummy_rand;
  67   rand_s(&dummy_rand);
  68   // Warm up language subsystems before the sandbox is turned on.
  69   ::GetUserDefaultLangID();
  70   ::GetUserDefaultLCID();
  71   // Turn the sandbox on.
  72   target_services->LowerToken();
  73 }
  74
  75 bool NaClMainPlatformDelegate::RunSandboxTests() {
  76   // TODO(jvoung): Win and mac should share this code.
  77   bool result = true;
  78   if (sandbox_test_module_) {
  79     RunNaClLoaderTests run_security_tests =
  80       reinterpret_cast<RunNaClLoaderTests>(
  81         base::GetFunctionPointerFromNativeLibrary(sandbox_test_module_,
  82                                                   kNaClLoaderTestCall));
  83     if (run_security_tests) {
  84       DVLOG(1) << "Running NaCl Loader security tests";
  85       result = (*run_security_tests)();
  86     } else {
  87       VLOG(1) << "Failed to get NaCl sandbox test function";
  88       result = false;
  89     }
  90     base::UnloadNativeLibrary(sandbox_test_module_);
  91     sandbox_test_module_ = NULL;
  92   }
  93   return result;
  94 }