content/renderer/renderer_main_platform_delegate_win.cc

   1 // Copyright (c) 2012 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 "content/renderer/renderer_main_platform_delegate.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/strings/string16.h"
  11 #include "base/win/scoped_comptr.h"
  12 #include "base/win/win_util.h"
  13 #include "base/win/windows_version.h"
  14 #include "content/common/sandbox_win.h"
  15 #include "content/public/common/content_switches.h"
  16 #include "content/public/common/injection_test_win.h"
  17 #include "content/public/renderer/render_font_warmup_win.h"
  18 #include "content/public/renderer/render_thread.h"
  19 #include "content/renderer/render_thread_impl.h"
  20 #include "sandbox/win/src/sandbox.h"
  21 #include "skia/ext/vector_platform_device_emf_win.h"
  22 #include "third_party/WebKit/public/web/win/WebFontRendering.h"
  23 #include "third_party/icu/source/i18n/unicode/timezone.h"
  24 #include "third_party/skia/include/ports/SkFontMgr.h"
  25 #include "third_party/skia/include/ports/SkTypeface_win.h"
  26
  27 #ifdef ENABLE_VTUNE_JIT_INTERFACE
  28 #include "v8/src/third_party/vtune/v8-vtune.h"
  29 #endif
  30
  31 #include <dwrite.h>
  32
  33 namespace content {
  34 namespace {
  35
  36 // Windows-only skia sandbox support
  37 // These are used for GDI-path rendering.
  38 void SkiaPreCacheFont(const LOGFONT& logfont) {
  39   RenderThread* render_thread = RenderThread::Get();
  40   if (render_thread) {
  41     render_thread->PreCacheFont(logfont);
  42   }
  43 }
  44
  45 void SkiaPreCacheFontCharacters(const LOGFONT& logfont,
  46                                 const wchar_t* text,
  47                                 unsigned int text_length) {
  48   RenderThreadImpl* render_thread_impl = RenderThreadImpl::current();
  49   if (render_thread_impl) {
  50     render_thread_impl->PreCacheFontCharacters(
  51         logfont,
  52         base::string16(text, text_length));
  53   }
  54 }
  55
  56 void WarmupDirectWrite() {
  57   // The objects used here are intentionally not freed as we want the Skia
  58   // code to use these objects after warmup.
  59   SkTypeface* typeface =
  60       GetPreSandboxWarmupFontMgr()->legacyCreateTypeface("Times New Roman", 0);
  61   DoPreSandboxWarmupForTypeface(typeface);
  62 }
  63
  64 }  // namespace
  65
  66 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
  67     const MainFunctionParams& parameters)
  68         : parameters_(parameters),
  69           sandbox_test_module_(NULL) {
  70 }
  71
  72 RendererMainPlatformDelegate::~RendererMainPlatformDelegate() {
  73 }
  74
  75 void RendererMainPlatformDelegate::PlatformInitialize() {
  76   const CommandLine& command_line = parameters_.command_line;
  77
  78 #ifdef ENABLE_VTUNE_JIT_INTERFACE
  79   if (command_line.HasSwitch(switches::kEnableVtune))
  80     vTune::InitializeVtuneForV8();
  81 #endif
  82
  83   // Be mindful of what resources you acquire here. They can be used by
  84   // malicious code if the renderer gets compromised.
  85   bool no_sandbox = command_line.HasSwitch(switches::kNoSandbox);
  86
  87   bool use_direct_write = ShouldUseDirectWrite();
  88   if (!no_sandbox) {
  89     // ICU DateFormat class (used in base/time_format.cc) needs to get the
  90     // Olson timezone ID by accessing the registry keys under
  91     // HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones.
  92     // After TimeZone::createDefault is called once here, the timezone ID is
  93     // cached and there's no more need to access the registry. If the sandbox
  94     // is disabled, we don't have to make this dummy call.
  95     scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
  96
  97     if (use_direct_write) {
  98       WarmupDirectWrite();
  99     } else {
 100       SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
 101       skia::SetSkiaEnsureTypefaceCharactersAccessible(
 102           SkiaPreCacheFontCharacters);
 103     }
 104   }
 105   blink::WebFontRendering::setUseDirectWrite(use_direct_write);
 106   blink::WebFontRendering::setUseSubpixelPositioning(use_direct_write);
 107 }
 108
 109 void RendererMainPlatformDelegate::PlatformUninitialize() {
 110 }
 111
 112 bool RendererMainPlatformDelegate::InitSandboxTests(bool no_sandbox) {
 113   const CommandLine& command_line = parameters_.command_line;
 114
 115   DVLOG(1) << "Started renderer with " << command_line.GetCommandLineString();
 116
 117   sandbox::TargetServices* target_services =
 118       parameters_.sandbox_info->target_services;
 119
 120   if (target_services && !no_sandbox) {
 121       std::wstring test_dll_name =
 122           command_line.GetSwitchValueNative(switches::kTestSandbox);
 123     if (!test_dll_name.empty()) {
 124       sandbox_test_module_ = LoadLibrary(test_dll_name.c_str());
 125       DCHECK(sandbox_test_module_);
 126       if (!sandbox_test_module_) {
 127         return false;
 128       }
 129     }
 130   }
 131   return true;
 132 }
 133
 134 bool RendererMainPlatformDelegate::EnableSandbox() {
 135   sandbox::TargetServices* target_services =
 136       parameters_.sandbox_info->target_services;
 137
 138   if (target_services) {
 139     // Cause advapi32 to load before the sandbox is turned on.
 140     unsigned int dummy_rand;
 141     rand_s(&dummy_rand);
 142     // Warm up language subsystems before the sandbox is turned on.
 143     ::GetUserDefaultLangID();
 144     ::GetUserDefaultLCID();
 145
 146     target_services->LowerToken();
 147     return true;
 148   }
 149   return false;
 150 }
 151
 152 void RendererMainPlatformDelegate::RunSandboxTests(bool no_sandbox) {
 153   if (sandbox_test_module_) {
 154     RunRendererTests run_security_tests =
 155         reinterpret_cast<RunRendererTests>(GetProcAddress(sandbox_test_module_,
 156                                                           kRenderTestCall));
 157     DCHECK(run_security_tests);
 158     if (run_security_tests) {
 159       int test_count = 0;
 160       DVLOG(1) << "Running renderer security tests";
 161       BOOL result = run_security_tests(&test_count);
 162       CHECK(result) << "Test number " << test_count << " has failed.";
 163     }
 164   }
 165 }
 166
 167 }  // namespace content