content/browser/renderer_host/render_view_host_impl.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/browser/renderer_host/render_view_host_impl.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <utility>
  10 #include <vector>
  11
  12 #include "base/callback.h"
  13 #include "base/command_line.h"
  14 #include "base/i18n/rtl.h"
  15 #include "base/json/json_reader.h"
  16 #include "base/message_loop/message_loop.h"
  17 #include "base/metrics/field_trial.h"
  18 #include "base/metrics/histogram.h"
  19 #include "base/stl_util.h"
  20 #include "base/strings/string_util.h"
  21 #include "base/strings/utf_string_conversions.h"
  22 #include "base/sys_info.h"
  23 #include "base/time/time.h"
  24 #include "base/trace_event/trace_event.h"
  25 #include "base/values.h"
  26 #include "cc/base/switches.h"
  27 #include "content/browser/bad_message.h"
  28 #include "content/browser/child_process_security_policy_impl.h"
  29 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  30 #include "content/browser/frame_host/frame_tree.h"
  31 #include "content/browser/gpu/compositor_util.h"
  32 #include "content/browser/gpu/gpu_data_manager_impl.h"
  33 #include "content/browser/gpu/gpu_process_host.h"
  34 #include "content/browser/gpu/gpu_surface_tracker.h"
  35 #include "content/browser/host_zoom_map_impl.h"
  36 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  37 #include "content/browser/renderer_host/dip_util.h"
  38 #include "content/browser/renderer_host/media/audio_renderer_host.h"
  39 #include "content/browser/renderer_host/render_process_host_impl.h"
  40 #include "content/browser/renderer_host/render_view_host_delegate.h"
  41 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  42 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  43 #include "content/common/browser_plugin/browser_plugin_messages.h"
  44 #include "content/common/content_switches_internal.h"
  45 #include "content/common/drag_messages.h"
  46 #include "content/common/frame_messages.h"
  47 #include "content/common/input_messages.h"
  48 #include "content/common/inter_process_time_ticks_converter.h"
  49 #include "content/common/speech_recognition_messages.h"
  50 #include "content/common/swapped_out_messages.h"
  51 #include "content/common/view_messages.h"
  52 #include "content/public/browser/ax_event_notification_details.h"
  53 #include "content/public/browser/browser_accessibility_state.h"
  54 #include "content/public/browser/browser_context.h"
  55 #include "content/public/browser/browser_message_filter.h"
  56 #include "content/public/browser/content_browser_client.h"
  57 #include "content/public/browser/focused_node_details.h"
  58 #include "content/public/browser/native_web_keyboard_event.h"
  59 #include "content/public/browser/notification_details.h"
  60 #include "content/public/browser/notification_service.h"
  61 #include "content/public/browser/notification_types.h"
  62 #include "content/public/browser/render_frame_host.h"
  63 #include "content/public/browser/render_widget_host_iterator.h"
  64 #include "content/public/browser/storage_partition.h"
  65 #include "content/public/browser/user_metrics.h"
  66 #include "content/public/common/bindings_policy.h"
  67 #include "content/public/common/content_constants.h"
  68 #include "content/public/common/content_switches.h"
  69 #include "content/public/common/context_menu_params.h"
  70 #include "content/public/common/drop_data.h"
  71 #include "content/public/common/file_chooser_file_info.h"
  72 #include "content/public/common/file_chooser_params.h"
  73 #include "content/public/common/result_codes.h"
  74 #include "content/public/common/url_constants.h"
  75 #include "content/public/common/url_utils.h"
  76 #include "net/base/filename_util.h"
  77 #include "net/base/net_util.h"
  78 #include "net/base/network_change_notifier.h"
  79 #include "net/url_request/url_request_context_getter.h"
  80 #include "storage/browser/fileapi/isolated_context.h"
  81 #include "third_party/skia/include/core/SkBitmap.h"
  82 #include "ui/base/touch/touch_device.h"
  83 #include "ui/base/touch/touch_enabled.h"
  84 #include "ui/base/ui_base_switches.h"
  85 #include "ui/gfx/image/image_skia.h"
  86 #include "ui/gfx/native_widget_types.h"
  87 #include "ui/native_theme/native_theme_switches.h"
  88 #include "url/url_constants.h"
  89
  90 #if defined(OS_WIN)
  91 #include "base/win/win_util.h"
  92 #include "ui/gfx/platform_font_win.h"
  93 #include "ui/gfx/win/dpi.h"
  94 #endif
  95
  96 using base::TimeDelta;
  97 using blink::WebConsoleMessage;
  98 using blink::WebDragOperation;
  99 using blink::WebDragOperationNone;
 100 using blink::WebDragOperationsMask;
 101 using blink::WebInputEvent;
 102 using blink::WebMediaPlayerAction;
 103 using blink::WebPluginAction;
 104
 105 namespace content {
 106 namespace {
 107
 108 #if defined(OS_WIN)
 109
 110 const int kVirtualKeyboardDisplayWaitTimeoutMs = 100;
 111 const int kMaxVirtualKeyboardDisplayRetries = 5;
 112
 113 void DismissVirtualKeyboardTask() {
 114   static int virtual_keyboard_display_retries = 0;
 115   // If the virtual keyboard is not yet visible, then we execute the task again
 116   // waiting for it to show up.
 117   if (!base::win::DismissVirtualKeyboard()) {
 118     if (virtual_keyboard_display_retries < kMaxVirtualKeyboardDisplayRetries) {
 119       BrowserThread::PostDelayedTask(
 120           BrowserThread::UI, FROM_HERE,
 121           base::Bind(base::IgnoreResult(&DismissVirtualKeyboardTask)),
 122           TimeDelta::FromMilliseconds(kVirtualKeyboardDisplayWaitTimeoutMs));
 123       ++virtual_keyboard_display_retries;
 124     } else {
 125       virtual_keyboard_display_retries = 0;
 126     }
 127   }
 128 }
 129
 130 void GetWindowsSpecificPrefs(RendererPreferences* prefs) {
 131   NONCLIENTMETRICS_XP metrics = {0};
 132   base::win::GetNonClientMetrics(&metrics);
 133
 134   prefs->caption_font_family_name = metrics.lfCaptionFont.lfFaceName;
 135   prefs->caption_font_height = gfx::PlatformFontWin::GetFontSize(
 136       metrics.lfCaptionFont);
 137
 138   prefs->small_caption_font_family_name = metrics.lfSmCaptionFont.lfFaceName;
 139   prefs->small_caption_font_height = gfx::PlatformFontWin::GetFontSize(
 140       metrics.lfSmCaptionFont);
 141
 142   prefs->menu_font_family_name = metrics.lfMenuFont.lfFaceName;
 143   prefs->menu_font_height = gfx::PlatformFontWin::GetFontSize(
 144       metrics.lfMenuFont);
 145
 146   prefs->status_font_family_name = metrics.lfStatusFont.lfFaceName;
 147   prefs->status_font_height = gfx::PlatformFontWin::GetFontSize(
 148       metrics.lfStatusFont);
 149
 150   prefs->message_font_family_name = metrics.lfMessageFont.lfFaceName;
 151   prefs->message_font_height = gfx::PlatformFontWin::GetFontSize(
 152       metrics.lfMessageFont);
 153
 154   prefs->vertical_scroll_bar_width_in_dips =
 155       gfx::win::GetSystemMetricsInDIP(SM_CXVSCROLL);
 156   prefs->horizontal_scroll_bar_height_in_dips =
 157       gfx::win::GetSystemMetricsInDIP(SM_CYHSCROLL);
 158   prefs->arrow_bitmap_height_vertical_scroll_bar_in_dips =
 159       gfx::win::GetSystemMetricsInDIP(SM_CYVSCROLL);
 160   prefs->arrow_bitmap_width_horizontal_scroll_bar_in_dips =
 161       gfx::win::GetSystemMetricsInDIP(SM_CXHSCROLL);
 162 }
 163 #endif
 164
 165 }  // namespace
 166
 167 // static
 168 const int64 RenderViewHostImpl::kUnloadTimeoutMS = 1000;
 169
 170 ///////////////////////////////////////////////////////////////////////////////
 171 // RenderViewHost, public:
 172
 173 // static
 174 RenderViewHost* RenderViewHost::FromID(int render_process_id,
 175                                        int render_view_id) {
 176   return RenderViewHostImpl::FromID(render_process_id, render_view_id);
 177 }
 178
 179 // static
 180 RenderViewHost* RenderViewHost::From(RenderWidgetHost* rwh) {
 181   DCHECK(rwh->IsRenderView());
 182   return static_cast<RenderViewHostImpl*>(RenderWidgetHostImpl::From(rwh));
 183 }
 184
 185 ///////////////////////////////////////////////////////////////////////////////
 186 // RenderViewHostImpl, public:
 187
 188 // static
 189 RenderViewHostImpl* RenderViewHostImpl::FromID(int render_process_id,
 190                                                int render_view_id) {
 191   RenderWidgetHost* widget =
 192       RenderWidgetHost::FromID(render_process_id, render_view_id);
 193   if (!widget || !widget->IsRenderView())
 194     return NULL;
 195   return static_cast<RenderViewHostImpl*>(RenderWidgetHostImpl::From(widget));
 196 }
 197
 198 RenderViewHostImpl::RenderViewHostImpl(
 199     SiteInstance* instance,
 200     RenderViewHostDelegate* delegate,
 201     RenderWidgetHostDelegate* widget_delegate,
 202     int routing_id,
 203     int main_frame_routing_id,
 204     bool swapped_out,
 205     bool hidden,
 206     bool has_initialized_audio_host)
 207     : RenderWidgetHostImpl(widget_delegate,
 208                            instance->GetProcess(),
 209                            routing_id,
 210                            hidden),
 211       frames_ref_count_(0),
 212       delegate_(delegate),
 213       instance_(static_cast<SiteInstanceImpl*>(instance)),
 214       waiting_for_drag_context_response_(false),
 215       enabled_bindings_(0),
 216       page_id_(-1),
 217       nav_entry_id_(0),
 218       is_active_(!swapped_out),
 219       is_swapped_out_(swapped_out),
 220       main_frame_routing_id_(main_frame_routing_id),
 221       is_waiting_for_close_ack_(false),
 222       sudden_termination_allowed_(false),
 223       render_view_termination_status_(base::TERMINATION_STATUS_STILL_RUNNING),
 224       virtual_keyboard_requested_(false),
 225       is_focused_element_editable_(false),
 226       updating_web_preferences_(false),
 227       weak_factory_(this) {
 228   DCHECK(instance_.get());
 229   CHECK(delegate_);  // http://crbug.com/82827
 230
 231   GetProcess()->AddObserver(this);
 232   GetProcess()->EnableSendQueue();
 233
 234   if (ResourceDispatcherHostImpl::Get()) {
 235     bool has_active_audio = false;
 236     if (has_initialized_audio_host) {
 237       scoped_refptr<AudioRendererHost> arh =
 238           static_cast<RenderProcessHostImpl*>(GetProcess())
 239               ->audio_renderer_host();
 240       if (arh.get())
 241         has_active_audio =
 242             arh->RenderFrameHasActiveAudio(main_frame_routing_id_);
 243     }
 244     BrowserThread::PostTask(
 245         BrowserThread::IO,
 246         FROM_HERE,
 247         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostCreated,
 248                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 249                    GetProcess()->GetID(),
 250                    GetRoutingID(),
 251                    !is_hidden(),
 252                    has_active_audio));
 253   }
 254 }
 255
 256 RenderViewHostImpl::~RenderViewHostImpl() {
 257   if (ResourceDispatcherHostImpl::Get()) {
 258     BrowserThread::PostTask(
 259         BrowserThread::IO, FROM_HERE,
 260         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostDeleted,
 261                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 262                    GetProcess()->GetID(), GetRoutingID()));
 263   }
 264
 265   delegate_->RenderViewDeleted(this);
 266   GetProcess()->RemoveObserver(this);
 267 }
 268
 269 RenderViewHostDelegate* RenderViewHostImpl::GetDelegate() const {
 270   return delegate_;
 271 }
 272
 273 SiteInstanceImpl* RenderViewHostImpl::GetSiteInstance() const {
 274   return instance_.get();
 275 }
 276
 277 bool RenderViewHostImpl::CreateRenderView(
 278     int opener_frame_route_id,
 279     int proxy_route_id,
 280     int32 max_page_id,
 281     const FrameReplicationState& replicated_frame_state,
 282     bool window_was_created_with_opener) {
 283   TRACE_EVENT0("renderer_host,navigation",
 284                "RenderViewHostImpl::CreateRenderView");
 285   DCHECK(!IsRenderViewLive()) << "Creating view twice";
 286
 287   // The process may (if we're sharing a process with another host that already
 288   // initialized it) or may not (we have our own process or the old process
 289   // crashed) have been initialized. Calling Init multiple times will be
 290   // ignored, so this is safe.
 291   if (!GetProcess()->Init())
 292     return false;
 293   DCHECK(GetProcess()->HasConnection());
 294   DCHECK(GetProcess()->GetBrowserContext());
 295
 296   set_renderer_initialized(true);
 297
 298   GpuSurfaceTracker::Get()->SetSurfaceHandle(
 299       surface_id(), GetCompositingSurface());
 300
 301   // Ensure the RenderView starts with a next_page_id larger than any existing
 302   // page ID it might be asked to render.
 303   int32 next_page_id = 1;
 304   if (max_page_id > -1)
 305     next_page_id = max_page_id + 1;
 306
 307   ViewMsg_New_Params params;
 308   params.renderer_preferences =
 309       delegate_->GetRendererPrefs(GetProcess()->GetBrowserContext());
 310 #if defined(OS_WIN)
 311   GetWindowsSpecificPrefs(&params.renderer_preferences);
 312 #endif
 313   params.web_preferences = GetWebkitPreferences();
 314   params.view_id = GetRoutingID();
 315   params.main_frame_routing_id = main_frame_routing_id_;
 316   params.surface_id = surface_id();
 317   params.session_storage_namespace_id =
 318       delegate_->GetSessionStorageNamespace(instance_.get())->id();
 319   // Ensure the RenderView sets its opener correctly.
 320   params.opener_frame_route_id = opener_frame_route_id;
 321   params.swapped_out = !is_active_;
 322   params.replicated_frame_state = replicated_frame_state;
 323   params.proxy_routing_id = proxy_route_id;
 324   params.hidden = is_hidden();
 325   params.never_visible = delegate_->IsNeverVisible();
 326   params.window_was_created_with_opener = window_was_created_with_opener;
 327   params.next_page_id = next_page_id;
 328   params.enable_auto_resize = auto_resize_enabled();
 329   params.min_size = min_size_for_auto_resize();
 330   params.max_size = max_size_for_auto_resize();
 331   GetResizeParams(&params.initial_size);
 332
 333   if (!Send(new ViewMsg_New(params)))
 334     return false;
 335   SetInitialRenderSizeParams(params.initial_size);
 336
 337   // If the RWHV has not yet been set, the surface ID namespace will get
 338   // passed down by the call to SetView().
 339   if (view_) {
 340     Send(new ViewMsg_SetSurfaceIdNamespace(GetRoutingID(),
 341                                            view_->GetSurfaceIdNamespace()));
 342   }
 343
 344   // If it's enabled, tell the renderer to set up the Javascript bindings for
 345   // sending messages back to the browser.
 346   if (GetProcess()->IsForGuestsOnly())
 347     DCHECK_EQ(0, enabled_bindings_);
 348   Send(new ViewMsg_AllowBindings(GetRoutingID(), enabled_bindings_));
 349   // Let our delegate know that we created a RenderView.
 350   delegate_->RenderViewCreated(this);
 351
 352   // Since this method can create the main RenderFrame in the renderer process,
 353   // set the proper state on its corresponding RenderFrameHost.
 354   if (main_frame_routing_id_ != MSG_ROUTING_NONE) {
 355     RenderFrameHostImpl::FromID(GetProcess()->GetID(), main_frame_routing_id_)
 356         ->SetRenderFrameCreated(true);
 357   }
 358
 359   return true;
 360 }
 361
 362 bool RenderViewHostImpl::IsRenderViewLive() const {
 363   return GetProcess()->HasConnection() && renderer_initialized();
 364 }
 365
 366 void RenderViewHostImpl::SyncRendererPrefs() {
 367   RendererPreferences renderer_preferences =
 368       delegate_->GetRendererPrefs(GetProcess()->GetBrowserContext());
 369 #if defined(OS_WIN)
 370   GetWindowsSpecificPrefs(&renderer_preferences);
 371 #endif
 372   Send(new ViewMsg_SetRendererPrefs(GetRoutingID(), renderer_preferences));
 373 }
 374
 375 WebPreferences RenderViewHostImpl::ComputeWebkitPrefs() {
 376   TRACE_EVENT0("browser", "RenderViewHostImpl::GetWebkitPrefs");
 377   WebPreferences prefs;
 378
 379   const base::CommandLine& command_line =
 380       *base::CommandLine::ForCurrentProcess();
 381
 382   prefs.web_security_enabled =
 383       !command_line.HasSwitch(switches::kDisableWebSecurity);
 384   prefs.java_enabled =
 385       !command_line.HasSwitch(switches::kDisableJava);
 386
 387   prefs.remote_fonts_enabled =
 388       !command_line.HasSwitch(switches::kDisableRemoteFonts);
 389   prefs.application_cache_enabled = true;
 390   prefs.xss_auditor_enabled =
 391       !command_line.HasSwitch(switches::kDisableXSSAuditor);
 392   prefs.local_storage_enabled =
 393       !command_line.HasSwitch(switches::kDisableLocalStorage);
 394   prefs.databases_enabled =
 395       !command_line.HasSwitch(switches::kDisableDatabases);
 396 #if defined(OS_ANDROID)
 397   // WebAudio is enabled by default on x86 and ARM.
 398   prefs.webaudio_enabled =
 399       !command_line.HasSwitch(switches::kDisableWebAudio);
 400 #endif
 401
 402   prefs.experimental_webgl_enabled =
 403       GpuProcessHost::gpu_enabled() &&
 404       !command_line.HasSwitch(switches::kDisable3DAPIs) &&
 405       !command_line.HasSwitch(switches::kDisableExperimentalWebGL);
 406
 407   prefs.pepper_3d_enabled =
 408       !command_line.HasSwitch(switches::kDisablePepper3d);
 409
 410   prefs.flash_3d_enabled =
 411       GpuProcessHost::gpu_enabled() &&
 412       !command_line.HasSwitch(switches::kDisableFlash3d);
 413   prefs.flash_stage3d_enabled =
 414       GpuProcessHost::gpu_enabled() &&
 415       !command_line.HasSwitch(switches::kDisableFlashStage3d);
 416   prefs.flash_stage3d_baseline_enabled =
 417       GpuProcessHost::gpu_enabled() &&
 418       !command_line.HasSwitch(switches::kDisableFlashStage3d);
 419
 420   prefs.allow_file_access_from_file_urls =
 421       command_line.HasSwitch(switches::kAllowFileAccessFromFiles);
 422
 423   prefs.accelerated_2d_canvas_enabled =
 424       GpuProcessHost::gpu_enabled() &&
 425       !command_line.HasSwitch(switches::kDisableAccelerated2dCanvas);
 426   prefs.antialiased_2d_canvas_disabled =
 427       command_line.HasSwitch(switches::kDisable2dCanvasAntialiasing);
 428   prefs.antialiased_clips_2d_canvas_enabled =
 429       command_line.HasSwitch(switches::kEnable2dCanvasClipAntialiasing);
 430   prefs.accelerated_2d_canvas_msaa_sample_count =
 431       atoi(command_line.GetSwitchValueASCII(
 432       switches::kAcceleratedCanvas2dMSAASampleCount).c_str());
 433   prefs.text_blobs_enabled =
 434       !command_line.HasSwitch(switches::kDisableTextBlobs);
 435
 436   prefs.pinch_overlay_scrollbar_thickness = 10;
 437   prefs.use_solid_color_scrollbars = ui::IsOverlayScrollbarEnabled();
 438   prefs.invert_viewport_scroll_order =
 439       command_line.HasSwitch(switches::kInvertViewportScrollOrder);
 440
 441 #if defined(OS_ANDROID)
 442   // On Android, user gestures are normally required, unless that requirement
 443   // is disabled with a command-line switch or the equivalent field trial is
 444   // is set to "Enabled".
 445   const std::string autoplay_group_name = base::FieldTrialList::FindFullName(
 446       "MediaElementAutoplay");
 447   prefs.user_gesture_required_for_media_playback = !command_line.HasSwitch(
 448       switches::kDisableGestureRequirementForMediaPlayback) &&
 449           (autoplay_group_name.empty() || autoplay_group_name != "Enabled");
 450 #endif
 451
 452   prefs.touch_enabled = ui::AreTouchEventsEnabled();
 453   prefs.device_supports_touch = prefs.touch_enabled &&
 454       ui::IsTouchDevicePresent();
 455   prefs.available_pointer_types = ui::GetAvailablePointerTypes();
 456   prefs.primary_pointer_type = ui::GetPrimaryPointerType();
 457   prefs.available_hover_types = ui::GetAvailableHoverTypes();
 458   prefs.primary_hover_type = ui::GetPrimaryHoverType();
 459
 460 #if defined(OS_ANDROID)
 461   prefs.device_supports_mouse = false;
 462 #endif
 463
 464   prefs.pointer_events_max_touch_points = ui::MaxTouchPoints();
 465
 466   prefs.touch_adjustment_enabled =
 467       !command_line.HasSwitch(switches::kDisableTouchAdjustment);
 468
 469   const std::string slimming_group =
 470       base::FieldTrialList::FindFullName("SlimmingPaint");
 471   prefs.slimming_paint_enabled =
 472       (command_line.HasSwitch(switches::kEnableSlimmingPaint) ||
 473       !command_line.HasSwitch(switches::kDisableSlimmingPaint)) &&
 474       (slimming_group != "DisableSlimmingPaint");
 475 #if defined(OS_MACOSX) || defined(OS_CHROMEOS)
 476   bool default_enable_scroll_animator = true;
 477 #else
 478   bool default_enable_scroll_animator = false;
 479 #endif
 480   prefs.enable_scroll_animator = default_enable_scroll_animator;
 481   if (command_line.HasSwitch(switches::kEnableSmoothScrolling))
 482     prefs.enable_scroll_animator = true;
 483   if (command_line.HasSwitch(switches::kDisableSmoothScrolling))
 484     prefs.enable_scroll_animator = false;
 485
 486   // Certain GPU features might have been blacklisted.
 487   GpuDataManagerImpl::GetInstance()->UpdateRendererWebPrefs(&prefs);
 488
 489   if (ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
 490           GetProcess()->GetID())) {
 491     prefs.loads_images_automatically = true;
 492     prefs.javascript_enabled = true;
 493   }
 494
 495   prefs.connection_type = net::NetworkChangeNotifier::GetConnectionType();
 496   prefs.is_online =
 497       prefs.connection_type != net::NetworkChangeNotifier::CONNECTION_NONE;
 498
 499   prefs.number_of_cpu_cores = base::SysInfo::NumberOfProcessors();
 500
 501   prefs.viewport_meta_enabled =
 502       command_line.HasSwitch(switches::kEnableViewportMeta);
 503
 504   prefs.viewport_enabled =
 505       command_line.HasSwitch(switches::kEnableViewport) ||
 506       prefs.viewport_meta_enabled;
 507
 508   prefs.main_frame_resizes_are_orientation_changes =
 509       command_line.HasSwitch(switches::kMainFrameResizesAreOrientationChanges);
 510
 511   prefs.image_color_profiles_enabled =
 512       command_line.HasSwitch(switches::kEnableImageColorProfiles);
 513
 514   prefs.spatial_navigation_enabled = command_line.HasSwitch(
 515       switches::kEnableSpatialNavigation);
 516
 517   prefs.disable_reading_from_canvas = command_line.HasSwitch(
 518       switches::kDisableReadingFromCanvas);
 519
 520   prefs.strict_mixed_content_checking = command_line.HasSwitch(
 521       switches::kEnableStrictMixedContentChecking);
 522
 523   prefs.strict_powerful_feature_restrictions = command_line.HasSwitch(
 524       switches::kEnableStrictPowerfulFeatureRestrictions);
 525
 526   const std::string blockable_mixed_content_group =
 527       base::FieldTrialList::FindFullName("BlockableMixedContent");
 528   prefs.strictly_block_blockable_mixed_content =
 529       blockable_mixed_content_group == "StrictlyBlockBlockableMixedContent";
 530
 531   prefs.v8_cache_options = GetV8CacheOptions();
 532
 533   GetContentClient()->browser()->OverrideWebkitPrefs(this, &prefs);
 534   return prefs;
 535 }
 536
 537 void RenderViewHostImpl::SuppressDialogsUntilSwapOut() {
 538   Send(new ViewMsg_SuppressDialogsUntilSwapOut(GetRoutingID()));
 539 }
 540
 541 void RenderViewHostImpl::ClosePage() {
 542   is_waiting_for_close_ack_ = true;
 543   StartHangMonitorTimeout(TimeDelta::FromMilliseconds(kUnloadTimeoutMS));
 544
 545   if (IsRenderViewLive()) {
 546     // Since we are sending an IPC message to the renderer, increase the event
 547     // count to prevent the hang monitor timeout from being stopped by input
 548     // event acknowledgements.
 549     increment_in_flight_event_count();
 550
 551     // TODO(creis): Should this be moved to Shutdown?  It may not be called for
 552     // RenderViewHosts that have been swapped out.
 553     NotificationService::current()->Notify(
 554         NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW,
 555         Source<RenderViewHost>(this),
 556         NotificationService::NoDetails());
 557
 558     Send(new ViewMsg_ClosePage(GetRoutingID()));
 559   } else {
 560     // This RenderViewHost doesn't have a live renderer, so just skip the unload
 561     // event and close the page.
 562     ClosePageIgnoringUnloadEvents();
 563   }
 564 }
 565
 566 void RenderViewHostImpl::ClosePageIgnoringUnloadEvents() {
 567   StopHangMonitorTimeout();
 568   is_waiting_for_close_ack_ = false;
 569
 570   sudden_termination_allowed_ = true;
 571   delegate_->Close(this);
 572 }
 573
 574 #if defined(OS_ANDROID)
 575 void RenderViewHostImpl::ActivateNearestFindResult(int request_id,
 576                                                    float x,
 577                                                    float y) {
 578   Send(new InputMsg_ActivateNearestFindResult(GetRoutingID(),
 579                                               request_id, x, y));
 580 }
 581
 582 void RenderViewHostImpl::RequestFindMatchRects(int current_version) {
 583   Send(new ViewMsg_FindMatchRects(GetRoutingID(), current_version));
 584 }
 585 #endif
 586
 587 void RenderViewHostImpl::RenderProcessExited(RenderProcessHost* host,
 588                                              base::TerminationStatus status,
 589                                              int exit_code) {
 590   if (!renderer_initialized())
 591     return;
 592
 593   RenderWidgetHostImpl::RendererExited(status, exit_code);
 594   delegate_->RenderViewTerminated(this, status, exit_code);
 595 }
 596
 597 void RenderViewHostImpl::DragTargetDragEnter(
 598     const DropData& drop_data,
 599     const gfx::Point& client_pt,
 600     const gfx::Point& screen_pt,
 601     WebDragOperationsMask operations_allowed,
 602     int key_modifiers) {
 603   const int renderer_id = GetProcess()->GetID();
 604   ChildProcessSecurityPolicyImpl* policy =
 605       ChildProcessSecurityPolicyImpl::GetInstance();
 606
 607 #if defined(OS_CHROMEOS)
 608   // The externalfile:// scheme is used in Chrome OS to open external files in a
 609   // browser tab.
 610   if (drop_data.url.SchemeIs(content::kExternalFileScheme))
 611     policy->GrantRequestURL(renderer_id, drop_data.url);
 612 #endif
 613
 614   // The URL could have been cobbled together from any highlighted text string,
 615   // and can't be interpreted as a capability.
 616   DropData filtered_data(drop_data);
 617   GetProcess()->FilterURL(true, &filtered_data.url);
 618   if (drop_data.did_originate_from_renderer) {
 619     filtered_data.filenames.clear();
 620   }
 621
 622   // The filenames vector, on the other hand, does represent a capability to
 623   // access the given files.
 624   storage::IsolatedContext::FileInfoSet files;
 625   for (std::vector<ui::FileInfo>::iterator iter(
 626            filtered_data.filenames.begin());
 627        iter != filtered_data.filenames.end();
 628        ++iter) {
 629     // A dragged file may wind up as the value of an input element, or it
 630     // may be used as the target of a navigation instead.  We don't know
 631     // which will happen at this point, so generously grant both access
 632     // and request permissions to the specific file to cover both cases.
 633     // We do not give it the permission to request all file:// URLs.
 634
 635     // Make sure we have the same display_name as the one we register.
 636     if (iter->display_name.empty()) {
 637       std::string name;
 638       files.AddPath(iter->path, &name);
 639       iter->display_name = base::FilePath::FromUTF8Unsafe(name);
 640     } else {
 641       files.AddPathWithName(iter->path, iter->display_name.AsUTF8Unsafe());
 642     }
 643
 644     policy->GrantRequestSpecificFileURL(renderer_id,
 645                                         net::FilePathToFileURL(iter->path));
 646
 647     // If the renderer already has permission to read these paths, we don't need
 648     // to re-grant them. This prevents problems with DnD for files in the CrOS
 649     // file manager--the file manager already had read/write access to those
 650     // directories, but dragging a file would cause the read/write access to be
 651     // overwritten with read-only access, making them impossible to delete or
 652     // rename until the renderer was killed.
 653     if (!policy->CanReadFile(renderer_id, iter->path))
 654       policy->GrantReadFile(renderer_id, iter->path);
 655   }
 656
 657   storage::IsolatedContext* isolated_context =
 658       storage::IsolatedContext::GetInstance();
 659   DCHECK(isolated_context);
 660   std::string filesystem_id = isolated_context->RegisterDraggedFileSystem(
 661       files);
 662   if (!filesystem_id.empty()) {
 663     // Grant the permission iff the ID is valid.
 664     policy->GrantReadFileSystem(renderer_id, filesystem_id);
 665   }
 666   filtered_data.filesystem_id = base::UTF8ToUTF16(filesystem_id);
 667
 668   storage::FileSystemContext* file_system_context =
 669       BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
 670                                           GetSiteInstance())
 671           ->GetFileSystemContext();
 672   for (size_t i = 0; i < filtered_data.file_system_files.size(); ++i) {
 673     storage::FileSystemURL file_system_url =
 674         file_system_context->CrackURL(filtered_data.file_system_files[i].url);
 675
 676     std::string register_name;
 677     std::string filesystem_id = isolated_context->RegisterFileSystemForPath(
 678         file_system_url.type(), file_system_url.filesystem_id(),
 679         file_system_url.path(), &register_name);
 680     policy->GrantReadFileSystem(renderer_id, filesystem_id);
 681
 682     // Note: We are using the origin URL provided by the sender here. It may be
 683     // different from the receiver's.
 684     filtered_data.file_system_files[i].url =
 685         GURL(storage::GetIsolatedFileSystemRootURIString(
 686                  file_system_url.origin(), filesystem_id, std::string())
 687                  .append(register_name));
 688   }
 689
 690   Send(new DragMsg_TargetDragEnter(GetRoutingID(), filtered_data, client_pt,
 691                                    screen_pt, operations_allowed,
 692                                    key_modifiers));
 693 }
 694
 695 void RenderViewHostImpl::DragTargetDragOver(
 696     const gfx::Point& client_pt,
 697     const gfx::Point& screen_pt,
 698     WebDragOperationsMask operations_allowed,
 699     int key_modifiers) {
 700   Send(new DragMsg_TargetDragOver(GetRoutingID(), client_pt, screen_pt,
 701                                   operations_allowed, key_modifiers));
 702 }
 703
 704 void RenderViewHostImpl::DragTargetDragLeave() {
 705   Send(new DragMsg_TargetDragLeave(GetRoutingID()));
 706 }
 707
 708 void RenderViewHostImpl::DragTargetDrop(
 709     const gfx::Point& client_pt,
 710     const gfx::Point& screen_pt,
 711     int key_modifiers) {
 712   Send(new DragMsg_TargetDrop(GetRoutingID(), client_pt, screen_pt,
 713                               key_modifiers));
 714 }
 715
 716 void RenderViewHostImpl::DragSourceEndedAt(
 717     int client_x, int client_y, int screen_x, int screen_y,
 718     WebDragOperation operation) {
 719   Send(new DragMsg_SourceEnded(GetRoutingID(),
 720                                gfx::Point(client_x, client_y),
 721                                gfx::Point(screen_x, screen_y),
 722                                operation));
 723 }
 724
 725 void RenderViewHostImpl::DragSourceSystemDragEnded() {
 726   Send(new DragMsg_SourceSystemDragEnded(GetRoutingID()));
 727 }
 728
 729 RenderFrameHost* RenderViewHostImpl::GetMainFrame() {
 730   return RenderFrameHost::FromID(GetProcess()->GetID(), main_frame_routing_id_);
 731 }
 732
 733 void RenderViewHostImpl::AllowBindings(int bindings_flags) {
 734   // Never grant any bindings to browser plugin guests.
 735   if (GetProcess()->IsForGuestsOnly()) {
 736     NOTREACHED() << "Never grant bindings to a guest process.";
 737     return;
 738   }
 739
 740   // Ensure we aren't granting WebUI bindings to a process that has already
 741   // been used for non-privileged views.
 742   if (bindings_flags & BINDINGS_POLICY_WEB_UI &&
 743       GetProcess()->HasConnection() &&
 744       !ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
 745           GetProcess()->GetID())) {
 746     // This process has no bindings yet. Make sure it does not have more
 747     // than this single active view.
 748     // --single-process only has one renderer.
 749     if (GetProcess()->GetActiveViewCount() > 1 &&
 750         !base::CommandLine::ForCurrentProcess()->HasSwitch(
 751             switches::kSingleProcess))
 752       return;
 753   }
 754
 755   if (bindings_flags & BINDINGS_POLICY_WEB_UI) {
 756     ChildProcessSecurityPolicyImpl::GetInstance()->GrantWebUIBindings(
 757         GetProcess()->GetID());
 758   }
 759
 760   enabled_bindings_ |= bindings_flags;
 761   if (renderer_initialized())
 762     Send(new ViewMsg_AllowBindings(GetRoutingID(), enabled_bindings_));
 763 }
 764
 765 int RenderViewHostImpl::GetEnabledBindings() const {
 766   return enabled_bindings_;
 767 }
 768
 769 void RenderViewHostImpl::SetWebUIProperty(const std::string& name,
 770                                           const std::string& value) {
 771   // This is a sanity check before telling the renderer to enable the property.
 772   // It could lie and send the corresponding IPC messages anyway, but we will
 773   // not act on them if enabled_bindings_ doesn't agree. If we get here without
 774   // WebUI bindings, kill the renderer process.
 775   if (enabled_bindings_ & BINDINGS_POLICY_WEB_UI) {
 776     Send(new ViewMsg_SetWebUIProperty(GetRoutingID(), name, value));
 777   } else {
 778     RecordAction(
 779         base::UserMetricsAction("BindingsMismatchTerminate_RVH_WebUI"));
 780     GetProcess()->Shutdown(content::RESULT_CODE_KILLED, false);
 781   }
 782 }
 783
 784 void RenderViewHostImpl::GotFocus() {
 785   RenderWidgetHostImpl::GotFocus();  // Notifies the renderer it got focus.
 786
 787   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
 788   if (view)
 789     view->GotFocus();
 790 }
 791
 792 void RenderViewHostImpl::LostCapture() {
 793   RenderWidgetHostImpl::LostCapture();
 794   delegate_->LostCapture();
 795 }
 796
 797 void RenderViewHostImpl::LostMouseLock() {
 798   RenderWidgetHostImpl::LostMouseLock();
 799   delegate_->LostMouseLock();
 800 }
 801
 802 void RenderViewHostImpl::SetInitialFocus(bool reverse) {
 803   Send(new ViewMsg_SetInitialFocus(GetRoutingID(), reverse));
 804 }
 805
 806 void RenderViewHostImpl::FilesSelectedInChooser(
 807     const std::vector<content::FileChooserFileInfo>& files,
 808     FileChooserParams::Mode permissions) {
 809   storage::FileSystemContext* const file_system_context =
 810       BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
 811                                           GetSiteInstance())
 812           ->GetFileSystemContext();
 813   // Grant the security access requested to the given files.
 814   for (size_t i = 0; i < files.size(); ++i) {
 815     const content::FileChooserFileInfo& file = files[i];
 816     if (permissions == FileChooserParams::Save) {
 817       ChildProcessSecurityPolicyImpl::GetInstance()->GrantCreateReadWriteFile(
 818           GetProcess()->GetID(), file.file_path);
 819     } else {
 820       ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
 821           GetProcess()->GetID(), file.file_path);
 822     }
 823     if (file.file_system_url.is_valid()) {
 824       ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFileSystem(
 825           GetProcess()->GetID(),
 826           file_system_context->CrackURL(file.file_system_url)
 827           .mount_filesystem_id());
 828     }
 829   }
 830   Send(new ViewMsg_RunFileChooserResponse(GetRoutingID(), files));
 831 }
 832
 833 void RenderViewHostImpl::DirectoryEnumerationFinished(
 834     int request_id,
 835     const std::vector<base::FilePath>& files) {
 836   // Grant the security access requested to the given files.
 837   for (std::vector<base::FilePath>::const_iterator file = files.begin();
 838        file != files.end(); ++file) {
 839     ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
 840         GetProcess()->GetID(), *file);
 841   }
 842   Send(new ViewMsg_EnumerateDirectoryResponse(GetRoutingID(),
 843                                               request_id,
 844                                               files));
 845 }
 846
 847 void RenderViewHostImpl::SetIsLoading(bool is_loading) {
 848   if (ResourceDispatcherHostImpl::Get()) {
 849     BrowserThread::PostTask(
 850         BrowserThread::IO,
 851         FROM_HERE,
 852         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostSetIsLoading,
 853                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 854                    GetProcess()->GetID(),
 855                    GetRoutingID(),
 856                    is_loading));
 857   }
 858   RenderWidgetHostImpl::SetIsLoading(is_loading);
 859 }
 860
 861 void RenderViewHostImpl::LoadStateChanged(
 862     const GURL& url,
 863     const net::LoadStateWithParam& load_state,
 864     uint64 upload_position,
 865     uint64 upload_size) {
 866   delegate_->LoadStateChanged(url, load_state, upload_position, upload_size);
 867 }
 868
 869 bool RenderViewHostImpl::SuddenTerminationAllowed() const {
 870   return sudden_termination_allowed_ ||
 871       GetProcess()->SuddenTerminationAllowed();
 872 }
 873
 874 ///////////////////////////////////////////////////////////////////////////////
 875 // RenderViewHostImpl, IPC message handlers:
 876
 877 bool RenderViewHostImpl::OnMessageReceived(const IPC::Message& msg) {
 878   if (!BrowserMessageFilter::CheckCanDispatchOnUI(msg, this))
 879     return true;
 880
 881   // Filter out most IPC messages if this renderer is swapped out.
 882   // We still want to handle certain ACKs to keep our state consistent.
 883   if (is_swapped_out_) {
 884     if (!SwappedOutMessages::CanHandleWhileSwappedOut(msg)) {
 885       // If this is a synchronous message and we decided not to handle it,
 886       // we must send an error reply, or else the renderer will be stuck
 887       // and won't respond to future requests.
 888       if (msg.is_sync()) {
 889         IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
 890         reply->set_reply_error();
 891         Send(reply);
 892       }
 893       // Don't continue looking for someone to handle it.
 894       return true;
 895     }
 896   }
 897
 898   if (delegate_->OnMessageReceived(this, msg))
 899     return true;
 900
 901   bool handled = true;
 902   IPC_BEGIN_MESSAGE_MAP(RenderViewHostImpl, msg)
 903     IPC_MESSAGE_HANDLER(FrameHostMsg_RenderProcessGone, OnRenderProcessGone)
 904     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowView, OnShowView)
 905     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowWidget, OnShowWidget)
 906     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowFullscreenWidget,
 907                         OnShowFullscreenWidget)
 908     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderViewReady, OnRenderViewReady)
 909     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateState, OnUpdateState)
 910     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateTargetURL, OnUpdateTargetURL)
 911     IPC_MESSAGE_HANDLER(ViewHostMsg_Close, OnClose)
 912     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestMove, OnRequestMove)
 913     IPC_MESSAGE_HANDLER(ViewHostMsg_DocumentAvailableInMainFrame,
 914                         OnDocumentAvailableInMainFrame)
 915     IPC_MESSAGE_HANDLER(ViewHostMsg_DidContentsPreferredSizeChange,
 916                         OnDidContentsPreferredSizeChange)
 917     IPC_MESSAGE_HANDLER(ViewHostMsg_RouteCloseEvent,
 918                         OnRouteCloseEvent)
 919     IPC_MESSAGE_HANDLER(DragHostMsg_StartDragging, OnStartDragging)
 920     IPC_MESSAGE_HANDLER(DragHostMsg_UpdateDragCursor, OnUpdateDragCursor)
 921     IPC_MESSAGE_HANDLER(ViewHostMsg_TakeFocus, OnTakeFocus)
 922     IPC_MESSAGE_HANDLER(ViewHostMsg_FocusedNodeChanged, OnFocusedNodeChanged)
 923     IPC_MESSAGE_HANDLER(ViewHostMsg_ClosePage_ACK, OnClosePageACK)
 924     IPC_MESSAGE_HANDLER(ViewHostMsg_DidZoomURL, OnDidZoomURL)
 925     IPC_MESSAGE_HANDLER(ViewHostMsg_PageScaleFactorIsOneChanged,
 926                         OnPageScaleFactorIsOneChanged)
 927     IPC_MESSAGE_HANDLER(ViewHostMsg_RunFileChooser, OnRunFileChooser)
 928     IPC_MESSAGE_HANDLER(ViewHostMsg_FocusedNodeTouched, OnFocusedNodeTouched)
 929     // Have the super handle all other messages.
 930     IPC_MESSAGE_UNHANDLED(
 931         handled = RenderWidgetHostImpl::OnMessageReceived(msg))
 932   IPC_END_MESSAGE_MAP()
 933
 934   return handled;
 935 }
 936
 937 void RenderViewHostImpl::Init() {
 938   RenderWidgetHostImpl::Init();
 939 }
 940
 941 void RenderViewHostImpl::Shutdown() {
 942   // We can't release the SessionStorageNamespace until our peer
 943   // in the renderer has wound down.
 944   if (GetProcess()->HasConnection()) {
 945     RenderProcessHostImpl::ReleaseOnCloseACK(
 946         GetProcess(),
 947         delegate_->GetSessionStorageNamespaceMap(),
 948         GetRoutingID());
 949   }
 950
 951   RenderWidgetHostImpl::Shutdown();
 952 }
 953
 954 void RenderViewHostImpl::WasHidden() {
 955   if (ResourceDispatcherHostImpl::Get()) {
 956     BrowserThread::PostTask(
 957         BrowserThread::IO, FROM_HERE,
 958         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostWasHidden,
 959                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 960                    GetProcess()->GetID(), GetRoutingID()));
 961   }
 962
 963   RenderWidgetHostImpl::WasHidden();
 964 }
 965
 966 void RenderViewHostImpl::WasShown(const ui::LatencyInfo& latency_info) {
 967   if (ResourceDispatcherHostImpl::Get()) {
 968     BrowserThread::PostTask(
 969         BrowserThread::IO, FROM_HERE,
 970         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostWasShown,
 971                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 972                    GetProcess()->GetID(), GetRoutingID()));
 973   }
 974
 975   RenderWidgetHostImpl::WasShown(latency_info);
 976 }
 977
 978 bool RenderViewHostImpl::IsRenderView() const {
 979   return true;
 980 }
 981
 982 void RenderViewHostImpl::CreateNewWindow(
 983     int route_id,
 984     int main_frame_route_id,
 985     const ViewHostMsg_CreateWindow_Params& params,
 986     SessionStorageNamespace* session_storage_namespace) {
 987   ViewHostMsg_CreateWindow_Params validated_params(params);
 988   GetProcess()->FilterURL(false, &validated_params.target_url);
 989   GetProcess()->FilterURL(false, &validated_params.opener_url);
 990   GetProcess()->FilterURL(true, &validated_params.opener_security_origin);
 991
 992   delegate_->CreateNewWindow(GetSiteInstance(), route_id, main_frame_route_id,
 993                              validated_params, session_storage_namespace);
 994 }
 995
 996 void RenderViewHostImpl::CreateNewWidget(int route_id,
 997                                      blink::WebPopupType popup_type) {
 998   delegate_->CreateNewWidget(GetProcess()->GetID(), route_id, popup_type);
 999 }
1000
1001 void RenderViewHostImpl::CreateNewFullscreenWidget(int route_id) {
1002   delegate_->CreateNewFullscreenWidget(GetProcess()->GetID(), route_id);
1003 }
1004
1005 void RenderViewHostImpl::OnShowView(int route_id,
1006                                     WindowOpenDisposition disposition,
1007                                     const gfx::Rect& initial_rect,
1008                                     bool user_gesture) {
1009   delegate_->ShowCreatedWindow(route_id, disposition, initial_rect,
1010                                user_gesture);
1011   Send(new ViewMsg_Move_ACK(route_id));
1012 }
1013
1014 void RenderViewHostImpl::OnShowWidget(int route_id,
1015                                       const gfx::Rect& initial_rect) {
1016   if (is_active_)
1017     delegate_->ShowCreatedWidget(route_id, initial_rect);
1018   Send(new ViewMsg_Move_ACK(route_id));
1019 }
1020
1021 void RenderViewHostImpl::OnShowFullscreenWidget(int route_id) {
1022   if (is_active_)
1023     delegate_->ShowCreatedFullscreenWidget(route_id);
1024   Send(new ViewMsg_Move_ACK(route_id));
1025 }
1026
1027 void RenderViewHostImpl::OnRenderViewReady() {
1028   render_view_termination_status_ = base::TERMINATION_STATUS_STILL_RUNNING;
1029   SendScreenRects();
1030   WasResized();
1031   delegate_->RenderViewReady(this);
1032 }
1033
1034 void RenderViewHostImpl::OnRenderProcessGone(int status, int exit_code) {
1035   // Do nothing, otherwise RenderWidgetHostImpl will assume it is not a
1036   // RenderViewHostImpl and destroy itself.
1037   // TODO(nasko): Remove this hack once RenderViewHost and RenderWidgetHost are
1038   // decoupled.
1039 }
1040
1041 void RenderViewHostImpl::OnUpdateState(int32 page_id, const PageState& state) {
1042   // If the following DCHECK fails, you have encountered a tricky edge-case that
1043   // has evaded reproduction for a very long time. Please report what you were
1044   // doing on http://crbug.com/407376, whether or not you can reproduce the
1045   // failure.
1046   DCHECK_EQ(page_id, page_id_);
1047
1048   // Without this check, the renderer can trick the browser into using
1049   // filenames it can't access in a future session restore.
1050   if (!CanAccessFilesOfPageState(state)) {
1051     bad_message::ReceivedBadMessage(
1052         GetProcess(), bad_message::RVH_CAN_ACCESS_FILES_OF_PAGE_STATE);
1053     return;
1054   }
1055
1056   delegate_->UpdateState(this, page_id, state);
1057 }
1058
1059 void RenderViewHostImpl::OnUpdateTargetURL(const GURL& url) {
1060   if (is_active_)
1061     delegate_->UpdateTargetURL(this, url);
1062
1063   // Send a notification back to the renderer that we are ready to
1064   // receive more target urls.
1065   Send(new ViewMsg_UpdateTargetURL_ACK(GetRoutingID()));
1066 }
1067
1068 void RenderViewHostImpl::OnClose() {
1069   // If the renderer is telling us to close, it has already run the unload
1070   // events, and we can take the fast path.
1071   ClosePageIgnoringUnloadEvents();
1072 }
1073
1074 void RenderViewHostImpl::OnRequestMove(const gfx::Rect& pos) {
1075   if (is_active_)
1076     delegate_->RequestMove(pos);
1077   Send(new ViewMsg_Move_ACK(GetRoutingID()));
1078 }
1079
1080 void RenderViewHostImpl::OnDocumentAvailableInMainFrame(
1081     bool uses_temporary_zoom_level) {
1082   delegate_->DocumentAvailableInMainFrame(this);
1083
1084   if (!uses_temporary_zoom_level)
1085     return;
1086
1087   HostZoomMapImpl* host_zoom_map =
1088       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
1089   host_zoom_map->SetTemporaryZoomLevel(GetProcess()->GetID(),
1090                                        GetRoutingID(),
1091                                        host_zoom_map->GetDefaultZoomLevel());
1092 }
1093
1094 void RenderViewHostImpl::OnDidContentsPreferredSizeChange(
1095     const gfx::Size& new_size) {
1096   delegate_->UpdatePreferredSize(new_size);
1097 }
1098
1099 void RenderViewHostImpl::OnRenderAutoResized(const gfx::Size& new_size) {
1100   delegate_->ResizeDueToAutoResize(new_size);
1101 }
1102
1103 void RenderViewHostImpl::OnRouteCloseEvent() {
1104   // Have the delegate route this to the active RenderViewHost.
1105   delegate_->RouteCloseEvent(this);
1106 }
1107
1108 void RenderViewHostImpl::OnStartDragging(
1109     const DropData& drop_data,
1110     WebDragOperationsMask drag_operations_mask,
1111     const SkBitmap& bitmap,
1112     const gfx::Vector2d& bitmap_offset_in_dip,
1113     const DragEventSourceInfo& event_info) {
1114   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
1115   if (!view)
1116     return;
1117
1118   DropData filtered_data(drop_data);
1119   RenderProcessHost* process = GetProcess();
1120   ChildProcessSecurityPolicyImpl* policy =
1121       ChildProcessSecurityPolicyImpl::GetInstance();
1122
1123   // Allow drag of Javascript URLs to enable bookmarklet drag to bookmark bar.
1124   if (!filtered_data.url.SchemeIs(url::kJavaScriptScheme))
1125     process->FilterURL(true, &filtered_data.url);
1126   process->FilterURL(false, &filtered_data.html_base_url);
1127   // Filter out any paths that the renderer didn't have access to. This prevents
1128   // the following attack on a malicious renderer:
1129   // 1. StartDragging IPC sent with renderer-specified filesystem paths that it
1130   //    doesn't have read permissions for.
1131   // 2. We initiate a native DnD operation.
1132   // 3. DnD operation immediately ends since mouse is not held down. DnD events
1133   //    still fire though, which causes read permissions to be granted to the
1134   //    renderer for any file paths in the drop.
1135   filtered_data.filenames.clear();
1136   for (std::vector<ui::FileInfo>::const_iterator it =
1137            drop_data.filenames.begin();
1138        it != drop_data.filenames.end();
1139        ++it) {
1140     if (policy->CanReadFile(GetProcess()->GetID(), it->path))
1141       filtered_data.filenames.push_back(*it);
1142   }
1143
1144   storage::FileSystemContext* file_system_context =
1145       BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
1146                                           GetSiteInstance())
1147           ->GetFileSystemContext();
1148   filtered_data.file_system_files.clear();
1149   for (size_t i = 0; i < drop_data.file_system_files.size(); ++i) {
1150     storage::FileSystemURL file_system_url =
1151         file_system_context->CrackURL(drop_data.file_system_files[i].url);
1152     if (policy->CanReadFileSystemFile(GetProcess()->GetID(), file_system_url))
1153       filtered_data.file_system_files.push_back(drop_data.file_system_files[i]);
1154   }
1155
1156   float scale = GetScaleFactorForView(GetView());
1157   gfx::ImageSkia image(gfx::ImageSkiaRep(bitmap, scale));
1158   view->StartDragging(filtered_data, drag_operations_mask, image,
1159       bitmap_offset_in_dip, event_info);
1160 }
1161
1162 void RenderViewHostImpl::OnUpdateDragCursor(WebDragOperation current_op) {
1163   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
1164   if (view)
1165     view->UpdateDragCursor(current_op);
1166 }
1167
1168 void RenderViewHostImpl::OnTakeFocus(bool reverse) {
1169   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
1170   if (view)
1171     view->TakeFocus(reverse);
1172 }
1173
1174 void RenderViewHostImpl::OnFocusedNodeChanged(
1175     bool is_editable_node,
1176     const gfx::Rect& node_bounds_in_viewport) {
1177   is_focused_element_editable_ = is_editable_node;
1178   if (view_)
1179     view_->FocusedNodeChanged(is_editable_node);
1180 #if defined(OS_WIN)
1181   if (!is_editable_node && virtual_keyboard_requested_) {
1182     virtual_keyboard_requested_ = false;
1183     delegate_->SetIsVirtualKeyboardRequested(false);
1184     BrowserThread::PostDelayedTask(
1185         BrowserThread::UI, FROM_HERE,
1186         base::Bind(base::IgnoreResult(&DismissVirtualKeyboardTask)),
1187         TimeDelta::FromMilliseconds(kVirtualKeyboardDisplayWaitTimeoutMs));
1188   }
1189 #endif
1190
1191   // Convert node_bounds to screen coordinates.
1192   gfx::Rect view_bounds_in_screen = view_->GetViewBounds();
1193   gfx::Point origin = node_bounds_in_viewport.origin();
1194   origin.Offset(view_bounds_in_screen.x(), view_bounds_in_screen.y());
1195   gfx::Rect node_bounds_in_screen(origin.x(), origin.y(),
1196                                   node_bounds_in_viewport.width(),
1197                                   node_bounds_in_viewport.height());
1198   FocusedNodeDetails details = {is_editable_node, node_bounds_in_screen};
1199   NotificationService::current()->Notify(NOTIFICATION_FOCUS_CHANGED_IN_PAGE,
1200                                          Source<RenderViewHost>(this),
1201                                          Details<FocusedNodeDetails>(&details));
1202 }
1203
1204 void RenderViewHostImpl::OnUserGesture() {
1205   delegate_->OnUserGesture();
1206 }
1207
1208 void RenderViewHostImpl::OnClosePageACK() {
1209   decrement_in_flight_event_count();
1210   ClosePageIgnoringUnloadEvents();
1211 }
1212
1213 void RenderViewHostImpl::NotifyRendererUnresponsive() {
1214   delegate_->RendererUnresponsive(this);
1215 }
1216
1217 void RenderViewHostImpl::NotifyRendererResponsive() {
1218   delegate_->RendererResponsive(this);
1219 }
1220
1221 void RenderViewHostImpl::RequestToLockMouse(bool user_gesture,
1222                                             bool last_unlocked_by_target) {
1223   delegate_->RequestToLockMouse(user_gesture, last_unlocked_by_target);
1224 }
1225
1226 bool RenderViewHostImpl::IsFullscreenGranted() const {
1227   return delegate_->IsFullscreenForCurrentTab();
1228 }
1229
1230 blink::WebDisplayMode RenderViewHostImpl::GetDisplayMode() const {
1231   return delegate_->GetDisplayMode();
1232 }
1233
1234 void RenderViewHostImpl::OnFocus() {
1235   // Note: We allow focus and blur from swapped out RenderViewHosts, even when
1236   // the active RenderViewHost is in a different BrowsingInstance (e.g., WebUI).
1237   delegate_->Activate();
1238 }
1239
1240 void RenderViewHostImpl::OnBlur() {
1241   delegate_->Deactivate();
1242 }
1243
1244 gfx::Rect RenderViewHostImpl::GetRootWindowResizerRect() const {
1245   return delegate_->GetRootWindowResizerRect();
1246 }
1247
1248 void RenderViewHostImpl::ForwardMouseEvent(
1249     const blink::WebMouseEvent& mouse_event) {
1250   RenderWidgetHostImpl::ForwardMouseEvent(mouse_event);
1251   if (mouse_event.type == WebInputEvent::MouseWheel && ignore_input_events())
1252     delegate_->OnIgnoredUIEvent();
1253 }
1254
1255 void RenderViewHostImpl::ForwardKeyboardEvent(
1256     const NativeWebKeyboardEvent& key_event) {
1257   if (ignore_input_events()) {
1258     if (key_event.type == WebInputEvent::RawKeyDown)
1259       delegate_->OnIgnoredUIEvent();
1260     return;
1261   }
1262   RenderWidgetHostImpl::ForwardKeyboardEvent(key_event);
1263 }
1264
1265 void RenderViewHostImpl::OnTextSurroundingSelectionResponse(
1266     const base::string16& content,
1267     size_t start_offset,
1268     size_t end_offset) {
1269   if (!view_)
1270     return;
1271   view_->OnTextSurroundingSelectionResponse(content, start_offset, end_offset);
1272 }
1273
1274 WebPreferences RenderViewHostImpl::GetWebkitPreferences() {
1275   if (!web_preferences_.get()) {
1276     OnWebkitPreferencesChanged();
1277   }
1278   return *web_preferences_;
1279 }
1280
1281 void RenderViewHostImpl::UpdateWebkitPreferences(const WebPreferences& prefs) {
1282   web_preferences_.reset(new WebPreferences(prefs));
1283   Send(new ViewMsg_UpdateWebPreferences(GetRoutingID(), prefs));
1284 }
1285
1286 void RenderViewHostImpl::OnWebkitPreferencesChanged() {
1287   // This is defensive code to avoid infinite loops due to code run inside
1288   // UpdateWebkitPreferences() accidentally updating more preferences and thus
1289   // calling back into this code. See crbug.com/398751 for one past example.
1290   if (updating_web_preferences_)
1291     return;
1292   updating_web_preferences_ = true;
1293   UpdateWebkitPreferences(ComputeWebkitPrefs());
1294   updating_web_preferences_ = false;
1295 }
1296
1297 void RenderViewHostImpl::ClearFocusedElement() {
1298   is_focused_element_editable_ = false;
1299   Send(new ViewMsg_ClearFocusedElement(GetRoutingID()));
1300 }
1301
1302 bool RenderViewHostImpl::IsFocusedElementEditable() {
1303   return is_focused_element_editable_;
1304 }
1305
1306 void RenderViewHostImpl::Zoom(PageZoom zoom) {
1307   Send(new ViewMsg_Zoom(GetRoutingID(), zoom));
1308 }
1309
1310 void RenderViewHostImpl::DisableScrollbarsForThreshold(const gfx::Size& size) {
1311   Send(new ViewMsg_DisableScrollbarsForSmallWindows(GetRoutingID(), size));
1312 }
1313
1314 void RenderViewHostImpl::EnablePreferredSizeMode() {
1315   Send(new ViewMsg_EnablePreferredSizeChangedMode(GetRoutingID()));
1316 }
1317
1318 void RenderViewHostImpl::EnableAutoResize(const gfx::Size& min_size,
1319                                           const gfx::Size& max_size) {
1320   SetAutoResize(true, min_size, max_size);
1321   Send(new ViewMsg_EnableAutoResize(GetRoutingID(), min_size, max_size));
1322 }
1323
1324 void RenderViewHostImpl::DisableAutoResize(const gfx::Size& new_size) {
1325   SetAutoResize(false, gfx::Size(), gfx::Size());
1326   Send(new ViewMsg_DisableAutoResize(GetRoutingID(), new_size));
1327   if (!new_size.IsEmpty())
1328     GetView()->SetSize(new_size);
1329 }
1330
1331 void RenderViewHostImpl::CopyImageAt(int x, int y) {
1332   Send(new ViewMsg_CopyImageAt(GetRoutingID(), x, y));
1333 }
1334
1335 void RenderViewHostImpl::SaveImageAt(int x, int y) {
1336   Send(new ViewMsg_SaveImageAt(GetRoutingID(), x, y));
1337 }
1338
1339 void RenderViewHostImpl::ExecuteMediaPlayerActionAtLocation(
1340   const gfx::Point& location, const blink::WebMediaPlayerAction& action) {
1341   Send(new ViewMsg_MediaPlayerActionAt(GetRoutingID(), location, action));
1342 }
1343
1344 void RenderViewHostImpl::ExecutePluginActionAtLocation(
1345   const gfx::Point& location, const blink::WebPluginAction& action) {
1346   Send(new ViewMsg_PluginActionAt(GetRoutingID(), location, action));
1347 }
1348
1349 void RenderViewHostImpl::NotifyMoveOrResizeStarted() {
1350   Send(new ViewMsg_MoveOrResizeStarted(GetRoutingID()));
1351 }
1352
1353 void RenderViewHostImpl::OnDidZoomURL(double zoom_level,
1354                                       const GURL& url) {
1355   HostZoomMapImpl* host_zoom_map =
1356       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
1357
1358   host_zoom_map->SetZoomLevelForView(GetProcess()->GetID(),
1359                                      GetRoutingID(),
1360                                      zoom_level,
1361                                      net::GetHostOrSpecFromURL(url));
1362 }
1363
1364 void RenderViewHostImpl::OnPageScaleFactorIsOneChanged(bool is_one) {
1365   if (!GetSiteInstance())
1366     return;
1367   HostZoomMapImpl* host_zoom_map =
1368       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
1369   if (!host_zoom_map)
1370     return;
1371   if (!GetProcess())
1372     return;
1373   host_zoom_map->SetPageScaleFactorIsOneForView(GetProcess()->GetID(),
1374                                                 GetRoutingID(), is_one);
1375 }
1376
1377 void RenderViewHostImpl::OnRunFileChooser(const FileChooserParams& params) {
1378   // Do not allow messages with absolute paths in them as this can permit a
1379   // renderer to coerce the browser to perform I/O on a renderer controlled
1380   // path.
1381   if (params.default_file_name != params.default_file_name.BaseName()) {
1382     bad_message::ReceivedBadMessage(GetProcess(),
1383                                     bad_message::RVH_FILE_CHOOSER_PATH);
1384     return;
1385   }
1386
1387   delegate_->RunFileChooser(this, params);
1388 }
1389
1390 void RenderViewHostImpl::OnFocusedNodeTouched(bool editable) {
1391 #if defined(OS_WIN)
1392   if (editable) {
1393     virtual_keyboard_requested_ = base::win::DisplayVirtualKeyboard();
1394     delegate_->SetIsVirtualKeyboardRequested(true);
1395   } else {
1396     virtual_keyboard_requested_ = false;
1397     delegate_->SetIsVirtualKeyboardRequested(false);
1398     base::win::DismissVirtualKeyboard();
1399   }
1400 #endif
1401 }
1402
1403 bool RenderViewHostImpl::CanAccessFilesOfPageState(
1404     const PageState& state) const {
1405   ChildProcessSecurityPolicyImpl* policy =
1406       ChildProcessSecurityPolicyImpl::GetInstance();
1407
1408   const std::vector<base::FilePath>& file_paths = state.GetReferencedFiles();
1409   for (const auto& file : file_paths) {
1410     if (!policy->CanReadFile(GetProcess()->GetID(), file))
1411       return false;
1412   }
1413   return true;
1414 }
1415
1416 void RenderViewHostImpl::GrantFileAccessFromPageState(const PageState& state) {
1417   ChildProcessSecurityPolicyImpl* policy =
1418       ChildProcessSecurityPolicyImpl::GetInstance();
1419
1420   const std::vector<base::FilePath>& file_paths = state.GetReferencedFiles();
1421   for (const auto& file : file_paths) {
1422     if (!policy->CanReadFile(GetProcess()->GetID(), file))
1423       policy->GrantReadFile(GetProcess()->GetID(), file);
1424   }
1425 }
1426
1427 void RenderViewHostImpl::SelectWordAroundCaret() {
1428   Send(new ViewMsg_SelectWordAroundCaret(GetRoutingID()));
1429 }
1430
1431 }  // namespace content