src/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/WebRuntimeFeatures.h"
  23 #include "third_party/WebKit/public/web/win/WebFontRendering.h"
  24 #include "third_party/icu/source/i18n/unicode/timezone.h"
  25 #include "third_party/skia/include/ports/SkFontMgr.h"
  26 #include "third_party/skia/include/ports/SkTypeface_win.h"
  27
  28 #ifdef ENABLE_VTUNE_JIT_INTERFACE
  29 #include "v8/src/third_party/vtune/v8-vtune.h"
  30 #endif
  31
  32 #include <dwrite.h>
  33
  34 namespace content {
  35 namespace {
  36
  37 // Windows-only skia sandbox support
  38 // These are used for GDI-path rendering.
  39 void SkiaPreCacheFont(const LOGFONT& logfont) {
  40   RenderThread* render_thread = RenderThread::Get();
  41   if (render_thread) {
  42     render_thread->PreCacheFont(logfont);
  43   }
  44 }
  45
  46 void SkiaPreCacheFontCharacters(const LOGFONT& logfont,
  47                                 const wchar_t* text,
  48                                 unsigned int text_length) {
  49   RenderThreadImpl* render_thread_impl = RenderThreadImpl::current();
  50   if (render_thread_impl) {
  51     render_thread_impl->PreCacheFontCharacters(
  52         logfont,
  53         base::string16(text, text_length));
  54   }
  55 }
  56
  57 void WarmupDirectWrite() {
  58   // The objects used here are intentionally not freed as we want the Skia
  59   // code to use these objects after warmup.
  60   SkTypeface* typeface =
  61       GetPreSandboxWarmupFontMgr()->legacyCreateTypeface("Times New Roman", 0);
  62   DoPreSandboxWarmupForTypeface(typeface);
  63 }
  64
  65 }  // namespace
  66
  67 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
  68     const MainFunctionParams& parameters)
  69         : parameters_(parameters),
  70           sandbox_test_module_(NULL) {
  71 }
  72
  73 RendererMainPlatformDelegate::~RendererMainPlatformDelegate() {
  74 }
  75
  76 void RendererMainPlatformDelegate::PlatformInitialize() {
  77   const CommandLine& command_line = parameters_.command_line;
  78
  79 #ifdef ENABLE_VTUNE_JIT_INTERFACE
  80   if (command_line.HasSwitch(switches::kEnableVtune))
  81     vTune::InitializeVtuneForV8();
  82 #endif
  83
  84   // Be mindful of what resources you acquire here. They can be used by
  85   // malicious code if the renderer gets compromised.
  86   bool no_sandbox = command_line.HasSwitch(switches::kNoSandbox);
  87
  88   bool use_direct_write = ShouldUseDirectWrite();
  89   if (!no_sandbox) {
  90     // ICU DateFormat class (used in base/time_format.cc) needs to get the
  91     // Olson timezone ID by accessing the registry keys under
  92     // HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones.
  93     // After TimeZone::createDefault is called once here, the timezone ID is
  94     // cached and there's no more need to access the registry. If the sandbox
  95     // is disabled, we don't have to make this dummy call.
  96     scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
  97
  98     if (use_direct_write) {
  99       WarmupDirectWrite();
 100     } else {
 101       SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
 102       skia::SetSkiaEnsureTypefaceCharactersAccessible(
 103           SkiaPreCacheFontCharacters);
 104     }
 105   }
 106   blink::WebFontRendering::setUseDirectWrite(use_direct_write);
 107   if (use_direct_write) {
 108     blink::WebRuntimeFeatures::enableSubpixelFontScaling(true);
 109   }
 110 }
 111
 112 void RendererMainPlatformDelegate::PlatformUninitialize() {
 113 }
 114
 115 bool RendererMainPlatformDelegate::InitSandboxTests(bool no_sandbox) {
 116   const CommandLine& command_line = parameters_.command_line;
 117
 118   DVLOG(1) << "Started renderer with " << command_line.GetCommandLineString();
 119
 120   sandbox::TargetServices* target_services =
 121       parameters_.sandbox_info->target_services;
 122
 123   if (target_services && !no_sandbox) {
 124       std::wstring test_dll_name =
 125           command_line.GetSwitchValueNative(switches::kTestSandbox);
 126     if (!test_dll_name.empty()) {
 127       sandbox_test_module_ = LoadLibrary(test_dll_name.c_str());
 128       DCHECK(sandbox_test_module_);
 129       if (!sandbox_test_module_) {
 130         return false;
 131       }
 132     }
 133   }
 134   return true;
 135 }
 136
 137 bool RendererMainPlatformDelegate::EnableSandbox() {
 138   sandbox::TargetServices* target_services =
 139       parameters_.sandbox_info->target_services;
 140
 141   if (target_services) {
 142     // Cause advapi32 to load before the sandbox is turned on.
 143     unsigned int dummy_rand;
 144     rand_s(&dummy_rand);
 145     // Warm up language subsystems before the sandbox is turned on.
 146     ::GetUserDefaultLangID();
 147     ::GetUserDefaultLCID();
 148
 149     target_services->LowerToken();
 150     return true;
 151   }
 152   return false;
 153 }
 154
 155 void RendererMainPlatformDelegate::RunSandboxTests(bool no_sandbox) {
 156   if (sandbox_test_module_) {
 157     RunRendererTests run_security_tests =
 158         reinterpret_cast<RunRendererTests>(GetProcAddress(sandbox_test_module_,
 159                                                           kRenderTestCall));
 160     DCHECK(run_security_tests);
 161     if (run_security_tests) {
 162       int test_count = 0;
 163       DVLOG(1) << "Running renderer security tests";
 164       BOOL result = run_security_tests(&test_count);
 165       CHECK(result) << "Test number " << test_count << " has failed.";
 166     }
 167   }
 168 }
 169
 170 }  // namespace content