chrome/renderer/chrome_render_process_observer.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 "chrome/renderer/chrome_render_process_observer.h"
   6
   7 #include <limits>
   8 #include <vector>
   9
  10 #include "base/allocator/allocator_extension.h"
  11 #include "base/bind.h"
  12 #include "base/command_line.h"
  13 #include "base/files/file_util.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "base/metrics/field_trial.h"
  17 #include "base/metrics/histogram.h"
  18 #include "base/metrics/statistics_recorder.h"
  19 #include "base/native_library.h"
  20 #include "base/path_service.h"
  21 #include "base/strings/utf_string_conversions.h"
  22 #include "base/threading/platform_thread.h"
  23 #include "chrome/common/child_process_logging.h"
  24 #include "chrome/common/chrome_paths.h"
  25 #include "chrome/common/chrome_switches.h"
  26 #include "chrome/common/net/net_resource_provider.h"
  27 #include "chrome/common/render_messages.h"
  28 #include "chrome/common/url_constants.h"
  29 #include "chrome/common/variations/variations_util.h"
  30 #include "chrome/renderer/content_settings_observer.h"
  31 #include "chrome/renderer/security_filter_peer.h"
  32 #include "content/public/child/resource_dispatcher_delegate.h"
  33 #include "content/public/renderer/render_thread.h"
  34 #include "content/public/renderer/render_view.h"
  35 #include "content/public/renderer/render_view_visitor.h"
  36 #include "crypto/nss_util.h"
  37 #include "net/base/net_errors.h"
  38 #include "net/base/net_module.h"
  39 #include "third_party/WebKit/public/web/WebCache.h"
  40 #include "third_party/WebKit/public/web/WebDocument.h"
  41 #include "third_party/WebKit/public/web/WebFrame.h"
  42 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  43 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
  44 #include "third_party/WebKit/public/web/WebView.h"
  45
  46 #if defined(ENABLE_EXTENSIONS)
  47 #include "chrome/renderer/extensions/extension_localization_peer.h"
  48 #endif
  49
  50 using blink::WebCache;
  51 using blink::WebRuntimeFeatures;
  52 using blink::WebSecurityPolicy;
  53 using blink::WebString;
  54 using content::RenderThread;
  55
  56 namespace {
  57
  58 const int kCacheStatsDelayMS = 2000;
  59
  60 class RendererResourceDelegate : public content::ResourceDispatcherDelegate {
  61  public:
  62   RendererResourceDelegate()
  63       : weak_factory_(this) {
  64   }
  65
  66   content::RequestPeer* OnRequestComplete(content::RequestPeer* current_peer,
  67                                           content::ResourceType resource_type,
  68                                           int error_code) override {
  69     // Update the browser about our cache.
  70     // Rate limit informing the host of our cache stats.
  71     if (!weak_factory_.HasWeakPtrs()) {
  72       base::MessageLoop::current()->PostDelayedTask(
  73           FROM_HERE,
  74           base::Bind(&RendererResourceDelegate::InformHostOfCacheStats,
  75                      weak_factory_.GetWeakPtr()),
  76           base::TimeDelta::FromMilliseconds(kCacheStatsDelayMS));
  77     }
  78
  79     if (error_code == net::ERR_ABORTED) {
  80       return NULL;
  81     }
  82
  83     // Resource canceled with a specific error are filtered.
  84     return SecurityFilterPeer::CreateSecurityFilterPeerForDeniedRequest(
  85         resource_type, current_peer, error_code);
  86   }
  87
  88   content::RequestPeer* OnReceivedResponse(content::RequestPeer* current_peer,
  89                                            const std::string& mime_type,
  90                                            const GURL& url) override {
  91 #if defined(ENABLE_EXTENSIONS)
  92     return ExtensionLocalizationPeer::CreateExtensionLocalizationPeer(
  93         current_peer, RenderThread::Get(), mime_type, url);
  94 #else
  95     return NULL;
  96 #endif
  97   }
  98
  99  private:
 100   void InformHostOfCacheStats() {
 101     WebCache::UsageStats stats;
 102     WebCache::getUsageStats(&stats);
 103     RenderThread::Get()->Send(new ChromeViewHostMsg_UpdatedCacheStats(stats));
 104   }
 105
 106   base::WeakPtrFactory<RendererResourceDelegate> weak_factory_;
 107
 108   DISALLOW_COPY_AND_ASSIGN(RendererResourceDelegate);
 109 };
 110
 111 static const int kWaitForWorkersStatsTimeoutMS = 20;
 112
 113 class HeapStatisticsCollector {
 114  public:
 115   HeapStatisticsCollector() : round_id_(0) {}
 116
 117   void InitiateCollection();
 118   static HeapStatisticsCollector* Instance();
 119
 120  private:
 121   void CollectOnWorkerThread(scoped_refptr<base::TaskRunner> master,
 122                              int round_id);
 123   void ReceiveStats(int round_id, size_t total_size, size_t used_size);
 124   void SendStatsToBrowser(int round_id);
 125
 126   size_t total_bytes_;
 127   size_t used_bytes_;
 128   int workers_to_go_;
 129   int round_id_;
 130 };
 131
 132 HeapStatisticsCollector* HeapStatisticsCollector::Instance() {
 133   CR_DEFINE_STATIC_LOCAL(HeapStatisticsCollector, instance, ());
 134   return &instance;
 135 }
 136
 137 void HeapStatisticsCollector::InitiateCollection() {
 138   v8::HeapStatistics heap_stats;
 139   v8::Isolate::GetCurrent()->GetHeapStatistics(&heap_stats);
 140   total_bytes_ = heap_stats.total_heap_size();
 141   used_bytes_ = heap_stats.used_heap_size();
 142   base::Closure collect = base::Bind(
 143       &HeapStatisticsCollector::CollectOnWorkerThread,
 144       base::Unretained(this),
 145       base::MessageLoopProxy::current(),
 146       round_id_);
 147   workers_to_go_ = RenderThread::Get()->PostTaskToAllWebWorkers(collect);
 148   if (workers_to_go_) {
 149     // The guard task to send out partial stats
 150     // in case some workers are not responsive.
 151     base::MessageLoopProxy::current()->PostDelayedTask(
 152         FROM_HERE,
 153         base::Bind(&HeapStatisticsCollector::SendStatsToBrowser,
 154                    base::Unretained(this),
 155                    round_id_),
 156         base::TimeDelta::FromMilliseconds(kWaitForWorkersStatsTimeoutMS));
 157   } else {
 158     // No worker threads so just send out the main thread data right away.
 159     SendStatsToBrowser(round_id_);
 160   }
 161 }
 162
 163 void HeapStatisticsCollector::CollectOnWorkerThread(
 164     scoped_refptr<base::TaskRunner> master,
 165     int round_id) {
 166
 167   size_t total_bytes = 0;
 168   size_t used_bytes = 0;
 169   v8::Isolate* isolate = v8::Isolate::GetCurrent();
 170   if (isolate) {
 171     v8::HeapStatistics heap_stats;
 172     isolate->GetHeapStatistics(&heap_stats);
 173     total_bytes = heap_stats.total_heap_size();
 174     used_bytes = heap_stats.used_heap_size();
 175   }
 176   master->PostTask(
 177       FROM_HERE,
 178       base::Bind(&HeapStatisticsCollector::ReceiveStats,
 179                  base::Unretained(this),
 180                  round_id,
 181                  total_bytes,
 182                  used_bytes));
 183 }
 184
 185 void HeapStatisticsCollector::ReceiveStats(int round_id,
 186                                            size_t total_bytes,
 187                                            size_t used_bytes) {
 188   if (round_id != round_id_)
 189     return;
 190   total_bytes_ += total_bytes;
 191   used_bytes_ += used_bytes;
 192   if (!--workers_to_go_)
 193     SendStatsToBrowser(round_id);
 194 }
 195
 196 void HeapStatisticsCollector::SendStatsToBrowser(int round_id) {
 197   if (round_id != round_id_)
 198     return;
 199   // TODO(alph): Do caching heap stats and use the cache if we haven't got
 200   //             reply from a worker.
 201   //             Currently a busy worker stats are not counted.
 202   RenderThread::Get()->Send(new ChromeViewHostMsg_V8HeapStats(
 203       total_bytes_, used_bytes_));
 204   ++round_id_;
 205 }
 206
 207 }  // namespace
 208
 209 bool ChromeRenderProcessObserver::is_incognito_process_ = false;
 210
 211 ChromeRenderProcessObserver::ChromeRenderProcessObserver(
 212     ChromeContentRendererClient* client)
 213     : client_(client),
 214       webkit_initialized_(false) {
 215   const base::CommandLine& command_line =
 216       *base::CommandLine::ForCurrentProcess();
 217
 218 #if defined(ENABLE_AUTOFILL_DIALOG)
 219   WebRuntimeFeatures::enableRequestAutocomplete(true);
 220 #endif
 221
 222   if (command_line.HasSwitch(switches::kEnableShowModalDialog))
 223     WebRuntimeFeatures::enableShowModalDialog(true);
 224
 225   if (command_line.HasSwitch(switches::kDisableJavaScriptHarmonyShipping)) {
 226     std::string flag("--noharmony-shipping");
 227     v8::V8::SetFlagsFromString(flag.c_str(), static_cast<int>(flag.size()));
 228   }
 229
 230   if (command_line.HasSwitch(switches::kJavaScriptHarmony)) {
 231     std::string flag("--harmony");
 232     v8::V8::SetFlagsFromString(flag.c_str(), static_cast<int>(flag.size()));
 233   }
 234
 235   RenderThread* thread = RenderThread::Get();
 236   resource_delegate_.reset(new RendererResourceDelegate());
 237   thread->SetResourceDispatcherDelegate(resource_delegate_.get());
 238
 239   // Configure modules that need access to resources.
 240   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
 241
 242 #if defined(OS_POSIX) && !defined(OS_MACOSX) && defined(USE_NSS)
 243   // On platforms where we use system NSS shared libraries,
 244   // initialize NSS now because it won't be able to load the .so's
 245   // after we engage the sandbox.
 246   if (!command_line.HasSwitch(switches::kSingleProcess))
 247     crypto::InitNSSSafely();
 248 #elif defined(OS_WIN)
 249   // crypt32.dll is used to decode X509 certificates for Chromoting.
 250   // Only load this library when the feature is enabled.
 251   base::LoadNativeLibrary(base::FilePath(L"crypt32.dll"), NULL);
 252 #endif
 253   // Setup initial set of crash dump data for Field Trials in this renderer.
 254   chrome_variations::SetChildProcessLoggingVariationList();
 255   // Listen for field trial activations to report them to the browser.
 256   base::FieldTrialList::AddObserver(this);
 257 }
 258
 259 ChromeRenderProcessObserver::~ChromeRenderProcessObserver() {
 260 }
 261
 262 bool ChromeRenderProcessObserver::OnControlMessageReceived(
 263     const IPC::Message& message) {
 264   bool handled = true;
 265   IPC_BEGIN_MESSAGE_MAP(ChromeRenderProcessObserver, message)
 266     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetIsIncognitoProcess,
 267                         OnSetIsIncognitoProcess)
 268     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetFieldTrialGroup, OnSetFieldTrialGroup)
 269     IPC_MESSAGE_HANDLER(ChromeViewMsg_GetV8HeapStats, OnGetV8HeapStats)
 270     IPC_MESSAGE_HANDLER(ChromeViewMsg_GetCacheResourceStats,
 271                         OnGetCacheResourceStats)
 272     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetContentSettingRules,
 273                         OnSetContentSettingRules)
 274     IPC_MESSAGE_UNHANDLED(handled = false)
 275   IPC_END_MESSAGE_MAP()
 276   return handled;
 277 }
 278
 279 void ChromeRenderProcessObserver::WebKitInitialized() {
 280   webkit_initialized_ = true;
 281   // chrome-native: is a scheme used for placeholder navigations that allow
 282   // UIs to be drawn with platform native widgets instead of HTML.  These pages
 283   // should not be accessible, and should also be treated as empty documents
 284   // that can commit synchronously.  No code should be runnable in these pages,
 285   // so it should not need to access anything nor should it allow javascript
 286   // URLs since it should never be visible to the user.
 287   WebString native_scheme(base::ASCIIToUTF16(chrome::kChromeNativeScheme));
 288   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(native_scheme);
 289   WebSecurityPolicy::registerURLSchemeAsEmptyDocument(native_scheme);
 290   WebSecurityPolicy::registerURLSchemeAsNoAccess(native_scheme);
 291   WebSecurityPolicy::registerURLSchemeAsNotAllowingJavascriptURLs(
 292       native_scheme);
 293 }
 294
 295 void ChromeRenderProcessObserver::OnRenderProcessShutdown() {
 296   webkit_initialized_ = false;
 297 }
 298
 299 void ChromeRenderProcessObserver::OnSetIsIncognitoProcess(
 300     bool is_incognito_process) {
 301   is_incognito_process_ = is_incognito_process;
 302 }
 303
 304 void ChromeRenderProcessObserver::OnSetContentSettingRules(
 305     const RendererContentSettingRules& rules) {
 306   content_setting_rules_ = rules;
 307 }
 308
 309 void ChromeRenderProcessObserver::OnGetCacheResourceStats() {
 310   WebCache::ResourceTypeStats stats;
 311   if (webkit_initialized_)
 312     WebCache::getResourceTypeStats(&stats);
 313   RenderThread::Get()->Send(new ChromeViewHostMsg_ResourceTypeStats(stats));
 314 }
 315
 316 void ChromeRenderProcessObserver::OnSetFieldTrialGroup(
 317     const std::string& field_trial_name,
 318     const std::string& group_name) {
 319   base::FieldTrial* trial =
 320       base::FieldTrialList::CreateFieldTrial(field_trial_name, group_name);
 321   // TODO(mef): Remove this check after the investigation of 359406 is complete.
 322   CHECK(trial) << field_trial_name << ":" << group_name;
 323   // Ensure the trial is marked as "used" by calling group() on it if it is
 324   // marked as activated.
 325   trial->group();
 326   chrome_variations::SetChildProcessLoggingVariationList();
 327 }
 328
 329 void ChromeRenderProcessObserver::OnGetV8HeapStats() {
 330   HeapStatisticsCollector::Instance()->InitiateCollection();
 331 }
 332
 333 const RendererContentSettingRules*
 334 ChromeRenderProcessObserver::content_setting_rules() const {
 335   return &content_setting_rules_;
 336 }
 337
 338 void ChromeRenderProcessObserver::OnFieldTrialGroupFinalized(
 339     const std::string& trial_name,
 340     const std::string& group_name) {
 341   content::RenderThread::Get()->Send(
 342       new ChromeViewHostMsg_FieldTrialActivated(trial_name));
 343 }