content/renderer/npapi/webplugin_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/renderer/npapi/webplugin_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/debug/crash_logging.h"
  10 #include "base/location.h"
  11 #include "base/logging.h"
  12 #include "base/memory/linked_ptr.h"
  13 #include "base/metrics/user_metrics_action.h"
  14 #include "base/single_thread_task_runner.h"
  15 #include "base/strings/string_util.h"
  16 #include "base/strings/stringprintf.h"
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "base/thread_task_runner_handle.h"
  19 #include "cc/blink/web_layer_impl.h"
  20 #include "cc/layers/io_surface_layer.h"
  21 #include "content/child/appcache/web_application_cache_host_impl.h"
  22 #include "content/child/multipart_response_delegate.h"
  23 #include "content/child/npapi/plugin_host.h"
  24 #include "content/child/npapi/plugin_instance.h"
  25 #include "content/child/npapi/webplugin_delegate_impl.h"
  26 #include "content/child/npapi/webplugin_resource_client.h"
  27 #include "content/common/view_messages.h"
  28 #include "content/public/common/content_constants.h"
  29 #include "content/public/common/content_switches.h"
  30 #include "content/public/renderer/content_renderer_client.h"
  31 #include "content/renderer/npapi/webplugin_delegate_proxy.h"
  32 #include "content/renderer/render_frame_impl.h"
  33 #include "content/renderer/render_process.h"
  34 #include "content/renderer/render_thread_impl.h"
  35 #include "content/renderer/render_view_impl.h"
  36 #include "net/base/escape.h"
  37 #include "net/base/net_errors.h"
  38 #include "net/http/http_response_headers.h"
  39 #include "skia/ext/platform_canvas.h"
  40 #include "third_party/WebKit/public/platform/WebCString.h"
  41 #include "third_party/WebKit/public/platform/WebCookieJar.h"
  42 #include "third_party/WebKit/public/platform/WebCursorInfo.h"
  43 #include "third_party/WebKit/public/platform/WebData.h"
  44 #include "third_party/WebKit/public/platform/WebHTTPBody.h"
  45 #include "third_party/WebKit/public/platform/WebHTTPHeaderVisitor.h"
  46 #include "third_party/WebKit/public/platform/WebURL.h"
  47 #include "third_party/WebKit/public/platform/WebURLError.h"
  48 #include "third_party/WebKit/public/platform/WebURLLoader.h"
  49 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
  50 #include "third_party/WebKit/public/platform/WebURLResponse.h"
  51 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
  52 #include "third_party/WebKit/public/web/WebDocument.h"
  53 #include "third_party/WebKit/public/web/WebFrame.h"
  54 #include "third_party/WebKit/public/web/WebInputEvent.h"
  55 #include "third_party/WebKit/public/web/WebKit.h"
  56 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  57 #include "third_party/WebKit/public/web/WebPluginParams.h"
  58 #include "third_party/WebKit/public/web/WebURLLoaderOptions.h"
  59 #include "third_party/WebKit/public/web/WebView.h"
  60 #include "ui/gfx/geometry/rect.h"
  61 #include "url/gurl.h"
  62 #include "url/url_util.h"
  63
  64 using blink::WebCString;
  65 using blink::WebCanvas;
  66 using blink::WebConsoleMessage;
  67 using blink::WebCookieJar;
  68 using blink::WebCursorInfo;
  69 using blink::WebData;
  70 using blink::WebDataSource;
  71 using blink::WebFrame;
  72 using blink::WebHTTPBody;
  73 using blink::WebHTTPHeaderVisitor;
  74 using blink::WebInputEvent;
  75 using blink::WebKeyboardEvent;
  76 using blink::WebMouseEvent;
  77 using blink::WebPluginContainer;
  78 using blink::WebPluginParams;
  79 using blink::WebRect;
  80 using blink::WebString;
  81 using blink::WebURL;
  82 using blink::WebURLError;
  83 using blink::WebURLLoader;
  84 using blink::WebURLLoaderClient;
  85 using blink::WebURLLoaderOptions;
  86 using blink::WebURLRequest;
  87 using blink::WebURLResponse;
  88 using blink::WebVector;
  89 using blink::WebView;
  90
  91 namespace content {
  92
  93 namespace {
  94
  95 // This class handles individual multipart responses. It is instantiated when
  96 // we receive HTTP status code 206 in the HTTP response. This indicates
  97 // that the response could have multiple parts each separated by a boundary
  98 // specified in the response header.
  99 class MultiPartResponseClient : public WebURLLoaderClient {
 100  public:
 101   explicit MultiPartResponseClient(WebPluginResourceClient* resource_client)
 102       : byte_range_lower_bound_(0), resource_client_(resource_client) {}
 103
 104   virtual void willSendRequest(
 105       WebURLLoader*, WebURLRequest&, const WebURLResponse&) {}
 106   virtual void didSendData(
 107       WebURLLoader*, unsigned long long, unsigned long long) {}
 108
 109   // Called when the multipart parser encounters an embedded multipart
 110   // response.
 111   virtual void didReceiveResponse(
 112       WebURLLoader*, const WebURLResponse& response) {
 113     int64 byte_range_upper_bound, instance_size;
 114     if (!MultipartResponseDelegate::ReadContentRanges(
 115             response,
 116             &byte_range_lower_bound_,
 117             &byte_range_upper_bound,
 118             &instance_size)) {
 119       NOTREACHED();
 120     }
 121   }
 122
 123   // Receives individual part data from a multipart response.
 124   virtual void didReceiveData(WebURLLoader*,
 125                               const char* data,
 126                               int data_length,
 127                               int encoded_data_length) {
 128     // TODO(ananta)
 129     // We should defer further loads on multipart resources on the same lines
 130     // as regular resources requested by plugins to prevent reentrancy.
 131     resource_client_->DidReceiveData(
 132         data, data_length, byte_range_lower_bound_);
 133     byte_range_lower_bound_ += data_length;
 134   }
 135
 136   virtual void didFinishLoading(WebURLLoader*,
 137                                 double finishTime,
 138                                 int64_t total_encoded_data_length) {}
 139   virtual void didFail(WebURLLoader*, const WebURLError&) {}
 140
 141  private:
 142   // The lower bound of the byte range.
 143   int64 byte_range_lower_bound_;
 144   // The handler for the data.
 145   WebPluginResourceClient* resource_client_;
 146 };
 147
 148 class HeaderFlattener : public WebHTTPHeaderVisitor {
 149  public:
 150   explicit HeaderFlattener(std::string* buf) : buf_(buf) {
 151   }
 152
 153   virtual void visitHeader(const WebString& name, const WebString& value) {
 154     // TODO(darin): Should we really exclude headers with an empty value?
 155     if (!name.isEmpty() && !value.isEmpty()) {
 156       buf_->append(name.utf8());
 157       buf_->append(": ");
 158       buf_->append(value.utf8());
 159       buf_->append("\n");
 160     }
 161   }
 162
 163  private:
 164   std::string* buf_;
 165 };
 166
 167 std::string GetAllHeaders(const WebURLResponse& response) {
 168   // TODO(darin): It is possible for httpStatusText to be empty and still have
 169   // an interesting response, so this check seems wrong.
 170   std::string result;
 171   const WebString& status = response.httpStatusText();
 172   if (status.isEmpty())
 173     return result;
 174
 175   // TODO(darin): Shouldn't we also report HTTP version numbers?
 176   result = base::StringPrintf("HTTP %d ", response.httpStatusCode());
 177   result.append(status.utf8());
 178   result.append("\n");
 179
 180   HeaderFlattener flattener(&result);
 181   response.visitHTTPHeaderFields(&flattener);
 182
 183   return result;
 184 }
 185
 186 struct ResponseInfo {
 187   GURL url;
 188   std::string mime_type;
 189   uint32 last_modified;
 190   uint32 expected_length;
 191 };
 192
 193 void GetResponseInfo(const WebURLResponse& response,
 194                      ResponseInfo* response_info) {
 195   response_info->url = response.url();
 196   response_info->mime_type = response.mimeType().utf8();
 197
 198   // Measured in seconds since 12:00 midnight GMT, January 1, 1970.
 199   response_info->last_modified =
 200       static_cast<uint32>(response.lastModifiedDate());
 201
 202   // If the length comes in as -1, then it indicates that it was not
 203   // read off the HTTP headers. We replicate Safari webkit behavior here,
 204   // which is to set it to 0.
 205   response_info->expected_length =
 206       static_cast<uint32>(std::max(response.expectedContentLength(), 0LL));
 207
 208   WebString content_encoding =
 209       response.httpHeaderField(WebString::fromUTF8("Content-Encoding"));
 210   if (!content_encoding.isNull() &&
 211       !EqualsASCII(content_encoding, "identity")) {
 212     // Don't send the compressed content length to the plugin, which only
 213     // cares about the decoded length.
 214     response_info->expected_length = 0;
 215   }
 216 }
 217
 218 }  // namespace
 219
 220 // blink::WebPlugin ----------------------------------------------------------
 221
 222 struct WebPluginImpl::ClientInfo {
 223   unsigned long id;
 224   WebPluginResourceClient* client;
 225   blink::WebURLRequest request;
 226   bool pending_failure_notification;
 227   linked_ptr<blink::WebURLLoader> loader;
 228   bool notify_redirects;
 229   bool is_plugin_src_load;
 230   int64 data_offset;
 231 };
 232
 233 bool WebPluginImpl::initialize(WebPluginContainer* container) {
 234   if (!render_view_.get()) {
 235     LOG(ERROR) << "No RenderView";
 236     return false;
 237   }
 238
 239   WebPluginDelegateProxy* plugin_delegate = new WebPluginDelegateProxy(
 240       this, mime_type_, render_view_, render_frame_);
 241
 242   // Store the plugin's unique identifier, used by the container to track its
 243   // script objects.
 244   npp_ = plugin_delegate->GetPluginNPP();
 245
 246   // Set the container before Initialize because the plugin may
 247   // synchronously call NPN_GetValue to get its container, or make calls
 248   // passing script objects that need to be tracked, during initialization.
 249   SetContainer(container);
 250
 251   bool ok = plugin_delegate->Initialize(
 252       plugin_url_, arg_names_, arg_values_, load_manually_);
 253   if (!ok) {
 254     plugin_delegate->PluginDestroyed();
 255
 256     blink::WebPlugin* replacement_plugin =
 257         GetContentClient()->renderer()->CreatePluginReplacement(
 258             render_frame_, file_path_);
 259     if (!replacement_plugin)
 260       return false;
 261
 262     // Disable scripting by this plugin before replacing it with the new
 263     // one. This plugin also needs destroying, so use destroy(), which will
 264     // implicitly disable scripting while un-setting the container.
 265     destroy();
 266
 267     // Inform the container of the replacement plugin, then initialize it.
 268     container->setPlugin(replacement_plugin);
 269     return replacement_plugin->initialize(container);
 270   }
 271
 272   delegate_ = plugin_delegate;
 273
 274   return true;
 275 }
 276
 277 void WebPluginImpl::destroy() {
 278   SetContainer(NULL);
 279   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 280 }
 281
 282 NPObject* WebPluginImpl::scriptableObject() {
 283   if (!delegate_)
 284     return NULL;
 285
 286   return delegate_->GetPluginScriptableObject();
 287 }
 288
 289 NPP WebPluginImpl::pluginNPP() {
 290   return npp_;
 291 }
 292
 293 bool WebPluginImpl::getFormValue(blink::WebString& value) {
 294   if (!delegate_)
 295     return false;
 296   base::string16 form_value;
 297   if (!delegate_->GetFormValue(&form_value))
 298     return false;
 299   value = form_value;
 300   return true;
 301 }
 302
 303 void WebPluginImpl::layoutIfNeeded() {
 304   if (!container_)
 305     return;
 306
 307 #if defined(OS_WIN)
 308   // Force a geometry update if needed to allow plugins like media player
 309   // which defer the initial geometry update to work. Do it now, rather
 310   // than in paint, so that the paint rect invalidation is registered.
 311   // Otherwise we may never get the paint call.
 312   container_->reportGeometry();
 313 #endif  // OS_WIN
 314 }
 315
 316 void WebPluginImpl::paint(WebCanvas* canvas, const WebRect& paint_rect) {
 317   if (!delegate_ || !container_)
 318     return;
 319
 320   // Note that |canvas| is only used when in windowless mode.
 321   delegate_->Paint(canvas, paint_rect);
 322 }
 323
 324 void WebPluginImpl::updateGeometry(const WebRect& window_rect,
 325                                    const WebRect& clip_rect,
 326                                    const WebRect& unobscured_rect,
 327                                    const WebVector<WebRect>& cut_outs_rects,
 328                                    bool is_visible) {
 329   WebPluginGeometry new_geometry;
 330   new_geometry.window = window_;
 331   new_geometry.window_rect = window_rect;
 332   new_geometry.clip_rect = clip_rect;
 333   new_geometry.visible = is_visible;
 334   new_geometry.rects_valid = true;
 335   for (size_t i = 0; i < cut_outs_rects.size(); ++i)
 336     new_geometry.cutout_rects.push_back(cut_outs_rects[i]);
 337
 338   // Only send DidMovePlugin if the geometry changed in some way.
 339   if (window_ && (first_geometry_update_ || !new_geometry.Equals(geometry_))) {
 340     render_frame_->GetRenderWidget()->SchedulePluginMove(new_geometry);
 341     // We invalidate windowed plugins during the first geometry update to
 342     // ensure that they get reparented to the wrapper window in the browser.
 343     // This ensures that they become visible and are painted by the OS. This is
 344     // required as some pages don't invalidate when the plugin is added.
 345     if (first_geometry_update_ && window_) {
 346       InvalidateRect(window_rect);
 347     }
 348   }
 349
 350   // Only UpdateGeometry if either the window or clip rects have changed.
 351   if (delegate_ && (first_geometry_update_ ||
 352       new_geometry.window_rect != geometry_.window_rect ||
 353       new_geometry.clip_rect != geometry_.clip_rect)) {
 354     // Notify the plugin that its parameters have changed.
 355     delegate_->UpdateGeometry(new_geometry.window_rect, new_geometry.clip_rect);
 356   }
 357
 358   // Initiate a download on the plugin url. This should be done for the
 359   // first update geometry sequence. We need to ensure that the plugin
 360   // receives the geometry update before it starts receiving data.
 361   if (first_geometry_update_) {
 362     // An empty url corresponds to an EMBED tag with no src attribute.
 363     if (!load_manually_ && plugin_url_.is_valid()) {
 364       // The Flash plugin hangs for a while if it receives data before
 365       // receiving valid plugin geometry. By valid geometry we mean the
 366       // geometry received by a call to setFrameRect in the Webkit
 367       // layout code path. To workaround this issue we download the
 368       // plugin source url on a timer.
 369       base::ThreadTaskRunnerHandle::Get()->PostTask(
 370           FROM_HERE, base::Bind(&WebPluginImpl::OnDownloadPluginSrcUrl,
 371                                 weak_factory_.GetWeakPtr()));
 372     }
 373   }
 374
 375 #if defined(OS_WIN)
 376   // Don't cache the geometry during the first geometry update. The first
 377   // geometry update sequence is received when Widget::setParent is called.
 378   // For plugins like media player which have a bug where they only honor
 379   // the first geometry update, we have a quirk which ignores the first
 380   // geometry update. To ensure that these plugins work correctly in cases
 381   // where we receive only one geometry update from webkit, we also force
 382   // a geometry update during paint which should go out correctly as the
 383   // initial geometry update was not cached.
 384   if (!first_geometry_update_)
 385     geometry_ = new_geometry;
 386 #else  // OS_WIN
 387   geometry_ = new_geometry;
 388 #endif  // OS_WIN
 389   first_geometry_update_ = false;
 390 }
 391
 392 void WebPluginImpl::updateFocus(bool focused, blink::WebFocusType focus_type) {
 393   if (accepts_input_events_)
 394     delegate_->SetFocus(focused);
 395 }
 396
 397 void WebPluginImpl::updateVisibility(bool visible) {
 398   if (!window_)
 399     return;
 400
 401   WebPluginGeometry move;
 402   move.window = window_;
 403   move.window_rect = gfx::Rect();
 404   move.clip_rect = gfx::Rect();
 405   move.rects_valid = false;
 406   move.visible = visible;
 407
 408   render_frame_->GetRenderWidget()->SchedulePluginMove(move);
 409 }
 410
 411 bool WebPluginImpl::acceptsInputEvents() {
 412   return accepts_input_events_;
 413 }
 414
 415 bool WebPluginImpl::handleInputEvent(
 416     const WebInputEvent& event, WebCursorInfo& cursor_info) {
 417   // Swallow context menu events in order to suppress the default context menu.
 418   if (event.type == WebInputEvent::ContextMenu)
 419     return true;
 420
 421   WebCursor::CursorInfo web_cursor_info;
 422   bool ret = delegate_->HandleInputEvent(event, &web_cursor_info);
 423   cursor_info.type = web_cursor_info.type;
 424   cursor_info.hotSpot = web_cursor_info.hotspot;
 425   cursor_info.customImage = web_cursor_info.custom_image;
 426   cursor_info.imageScaleFactor = web_cursor_info.image_scale_factor;
 427 #if defined(OS_WIN)
 428   cursor_info.externalHandle = web_cursor_info.external_handle;
 429 #endif
 430   return ret;
 431 }
 432
 433 void WebPluginImpl::didReceiveResponse(const WebURLResponse& response) {
 434   ignore_response_error_ = false;
 435
 436   ResponseInfo response_info;
 437   GetResponseInfo(response, &response_info);
 438
 439   delegate_->DidReceiveManualResponse(
 440       response_info.url,
 441       response_info.mime_type,
 442       GetAllHeaders(response),
 443       response_info.expected_length,
 444       response_info.last_modified);
 445 }
 446
 447 void WebPluginImpl::didReceiveData(const char* data, int data_length) {
 448   delegate_->DidReceiveManualData(data, data_length);
 449 }
 450
 451 void WebPluginImpl::didFinishLoading() {
 452   delegate_->DidFinishManualLoading();
 453 }
 454
 455 void WebPluginImpl::didFailLoading(const WebURLError& error) {
 456   if (!ignore_response_error_)
 457     delegate_->DidManualLoadFail();
 458 }
 459
 460 void WebPluginImpl::didFinishLoadingFrameRequest(
 461     const WebURL& url, void* notify_data) {
 462   if (delegate_) {
 463     // We're converting a void* into an arbitrary int id.  Though
 464     // these types are the same size on all the platforms we support,
 465     // the compiler may complain as though they are different, so to
 466     // make the casting gods happy go through an intptr_t (the union
 467     // of void* and int) rather than converting straight across.
 468     delegate_->DidFinishLoadWithReason(
 469         url, NPRES_DONE, reinterpret_cast<intptr_t>(notify_data));
 470   }
 471 }
 472
 473 void WebPluginImpl::didFailLoadingFrameRequest(
 474     const WebURL& url, void* notify_data, const WebURLError& error) {
 475   if (!delegate_)
 476     return;
 477
 478   NPReason reason =
 479       error.reason == net::ERR_ABORTED ? NPRES_USER_BREAK : NPRES_NETWORK_ERR;
 480   // See comment in didFinishLoadingFrameRequest about the cast here.
 481   delegate_->DidFinishLoadWithReason(
 482       url, reason, reinterpret_cast<intptr_t>(notify_data));
 483 }
 484
 485 bool WebPluginImpl::isPlaceholder() {
 486   return false;
 487 }
 488
 489 WebPluginImpl::LoaderClient::LoaderClient(WebPluginImpl* parent)
 490     : parent_(parent) {}
 491
 492 void WebPluginImpl::LoaderClient::willSendRequest(
 493     blink::WebURLLoader* loader, blink::WebURLRequest& newRequest,
 494     const blink::WebURLResponse& redirectResponse) {
 495   parent_->willSendRequest(loader, newRequest, redirectResponse);
 496 }
 497
 498 void WebPluginImpl::LoaderClient::didSendData(
 499     blink::WebURLLoader* loader, unsigned long long bytesSent,
 500     unsigned long long totalBytesToBeSent) {
 501   parent_->didSendData(loader, bytesSent, totalBytesToBeSent);
 502 }
 503
 504 void WebPluginImpl::LoaderClient::didReceiveResponse(
 505     blink::WebURLLoader* loader, const blink::WebURLResponse& response) {
 506   parent_->didReceiveResponse(loader, response);
 507 }
 508
 509 void WebPluginImpl::LoaderClient::didDownloadData(
 510     blink::WebURLLoader* loader, int dataLength, int encodedDataLength) {
 511 }
 512
 513 void WebPluginImpl::LoaderClient::didReceiveData(
 514     blink::WebURLLoader* loader, const char* data,
 515     int dataLength, int encodedDataLength) {
 516   parent_->didReceiveData(loader, data, dataLength, encodedDataLength);
 517 }
 518
 519 void WebPluginImpl::LoaderClient::didReceiveCachedMetadata(
 520     blink::WebURLLoader* loader, const char* data, int dataLength) {
 521 }
 522
 523 void WebPluginImpl::LoaderClient::didFinishLoading(
 524     blink::WebURLLoader* loader, double finishTime,
 525     int64_t total_encoded_data_length) {
 526   parent_->didFinishLoading(loader, finishTime);
 527 }
 528
 529 void WebPluginImpl::LoaderClient::didFail(
 530     blink::WebURLLoader* loader, const blink::WebURLError& error) {
 531   parent_->didFail(loader, error);
 532 }
 533
 534 // -----------------------------------------------------------------------------
 535
 536 WebPluginImpl::WebPluginImpl(
 537     WebFrame* webframe,
 538     const WebPluginParams& params,
 539     const base::FilePath& file_path,
 540     const base::WeakPtr<RenderViewImpl>& render_view,
 541     RenderFrameImpl* render_frame)
 542     : windowless_(false),
 543       window_(gfx::kNullPluginWindow),
 544       accepts_input_events_(false),
 545       render_frame_(render_frame),
 546       render_view_(render_view),
 547       webframe_(webframe),
 548       delegate_(NULL),
 549       container_(NULL),
 550       npp_(NULL),
 551       plugin_url_(params.url),
 552       load_manually_(params.loadManually),
 553       first_geometry_update_(true),
 554       ignore_response_error_(false),
 555       file_path_(file_path),
 556       mime_type_(base::UTF16ToASCII(params.mimeType)),
 557       loader_client_(this),
 558       weak_factory_(this) {
 559   DCHECK_EQ(params.attributeNames.size(), params.attributeValues.size());
 560   base::StringToLowerASCII(&mime_type_);
 561
 562   for (size_t i = 0; i < params.attributeNames.size(); ++i) {
 563     arg_names_.push_back(params.attributeNames[i].utf8());
 564     arg_values_.push_back(params.attributeValues[i].utf8());
 565   }
 566
 567   // Set subresource URL for crash reporting.
 568   base::debug::SetCrashKeyValue("subresource_url", plugin_url_.spec());
 569 }
 570
 571 WebPluginImpl::~WebPluginImpl() {
 572 }
 573
 574 void WebPluginImpl::SetWindow(gfx::PluginWindowHandle window) {
 575   if (window) {
 576     DCHECK(!windowless_);
 577     window_ = window;
 578 #if defined(OS_MACOSX)
 579     // TODO(kbr): remove. http://crbug.com/105344
 580
 581     // Lie to ourselves about being windowless even if we got a fake
 582     // plugin window handle, so we continue to get input events.
 583     windowless_ = true;
 584     accepts_input_events_ = true;
 585     // We do not really need to notify the page delegate that a plugin
 586     // window was created -- so don't.
 587 #else
 588     accepts_input_events_ = false;
 589
 590 #endif  // OS_MACOSX
 591   } else {
 592     DCHECK(!window_);  // Make sure not called twice.
 593     windowless_ = true;
 594     accepts_input_events_ = true;
 595   }
 596 }
 597
 598 void WebPluginImpl::SetAcceptsInputEvents(bool accepts) {
 599   accepts_input_events_ = accepts;
 600 }
 601
 602 void WebPluginImpl::WillDestroyWindow(gfx::PluginWindowHandle window) {
 603   DCHECK_EQ(window, window_);
 604   window_ = gfx::kNullPluginWindow;
 605   if (render_view_.get())
 606     render_frame_->GetRenderWidget()->CleanupWindowInPluginMoves(window);
 607 }
 608
 609 GURL WebPluginImpl::CompleteURL(const char* url) {
 610   if (!webframe_) {
 611     NOTREACHED();
 612     return GURL();
 613   }
 614   // TODO(darin): Is conversion from UTF8 correct here?
 615   return webframe_->document().completeURL(WebString::fromUTF8(url));
 616 }
 617
 618 void WebPluginImpl::CancelResource(unsigned long id) {
 619   for (size_t i = 0; i < clients_.size(); ++i) {
 620     if (clients_[i].id == id) {
 621       if (clients_[i].loader.get()) {
 622         clients_[i].loader->setDefersLoading(false);
 623         clients_[i].loader->cancel();
 624         RemoveClient(i);
 625       }
 626       return;
 627     }
 628   }
 629 }
 630
 631 bool WebPluginImpl::SetPostData(WebURLRequest* request,
 632                                 const char *buf,
 633                                 uint32 length) {
 634   std::vector<std::string> names;
 635   std::vector<std::string> values;
 636   std::vector<char> body;
 637   bool rv = PluginHost::SetPostData(buf, length, &names, &values, &body);
 638
 639   for (size_t i = 0; i < names.size(); ++i) {
 640     request->addHTTPHeaderField(WebString::fromUTF8(names[i]),
 641                                 WebString::fromUTF8(values[i]));
 642   }
 643
 644   WebString content_type_header = WebString::fromUTF8("Content-Type");
 645   const WebString& content_type =
 646       request->httpHeaderField(content_type_header);
 647   if (content_type.isEmpty()) {
 648     request->setHTTPHeaderField(
 649         content_type_header,
 650         WebString::fromUTF8("application/x-www-form-urlencoded"));
 651   }
 652
 653   WebHTTPBody http_body;
 654   if (body.size()) {
 655     http_body.initialize();
 656     http_body.appendData(WebData(&body[0], body.size()));
 657   }
 658   request->setHTTPBody(http_body);
 659
 660   return rv;
 661 }
 662
 663 bool WebPluginImpl::IsValidUrl(const GURL& url, ReferrerValue referrer_flag) {
 664   if (referrer_flag == PLUGIN_SRC &&
 665       mime_type_ == kFlashPluginSwfMimeType &&
 666       url.GetOrigin() != plugin_url_.GetOrigin()) {
 667     // Do url check to make sure that there are no @, ;, \ chars in between url
 668     // scheme and url path.
 669     const char* url_to_check(url.spec().data());
 670     url::Parsed parsed;
 671     url::ParseStandardURL(url_to_check, strlen(url_to_check), &parsed);
 672     if (parsed.path.begin <= parsed.scheme.end())
 673       return true;
 674     std::string string_to_search;
 675     string_to_search.assign(url_to_check + parsed.scheme.end(),
 676         parsed.path.begin - parsed.scheme.end());
 677     if (string_to_search.find("@") != std::string::npos ||
 678         string_to_search.find(";") != std::string::npos ||
 679         string_to_search.find("\\") != std::string::npos)
 680       return false;
 681   }
 682
 683   return true;
 684 }
 685
 686 WebPluginImpl::RoutingStatus WebPluginImpl::RouteToFrame(
 687     const char* url,
 688     bool is_javascript_url,
 689     bool popups_allowed,
 690     const char* method,
 691     const char* target,
 692     const char* buf,
 693     unsigned int len,
 694     int notify_id,
 695     ReferrerValue referrer_flag) {
 696   // If there is no target, there is nothing to do
 697   if (!target)
 698     return NOT_ROUTED;
 699
 700   // This could happen if the WebPluginContainer was already deleted.
 701   if (!webframe_)
 702     return NOT_ROUTED;
 703
 704   WebString target_str = WebString::fromUTF8(target);
 705
 706   // Take special action for JavaScript URLs
 707   if (is_javascript_url) {
 708     WebFrame* target_frame =
 709         webframe_->view()->findFrameByName(target_str, webframe_);
 710     // For security reasons, do not allow JavaScript on frames
 711     // other than this frame.
 712     if (target_frame != webframe_) {
 713       // TODO(darin): Localize this message.
 714       const char kMessage[] =
 715           "Ignoring cross-frame javascript URL load requested by plugin.";
 716       webframe_->addMessageToConsole(
 717           WebConsoleMessage(WebConsoleMessage::LevelError,
 718                             WebString::fromUTF8(kMessage)));
 719       return ROUTED;
 720     }
 721
 722     // Route javascript calls back to the plugin.
 723     return NOT_ROUTED;
 724   }
 725
 726   // If we got this far, we're routing content to a target frame.
 727   // Go fetch the URL.
 728
 729   GURL complete_url = CompleteURL(url);
 730   // Remove when flash bug is fixed. http://crbug.com/40016.
 731   if (!WebPluginImpl::IsValidUrl(complete_url, referrer_flag))
 732     return INVALID_URL;
 733
 734   if (strcmp(method, "GET") != 0) {
 735     // We're only going to route HTTP/HTTPS requests
 736     if (!complete_url.SchemeIsHTTPOrHTTPS())
 737       return INVALID_URL;
 738   }
 739
 740   WebURLRequest request(complete_url);
 741   SetReferrer(&request, referrer_flag);
 742
 743   request.setHTTPMethod(WebString::fromUTF8(method));
 744   request.setFirstPartyForCookies(
 745       webframe_->document().firstPartyForCookies());
 746   request.setHasUserGesture(popups_allowed);
 747   // ServiceWorker is disabled for NPAPI.
 748   request.setSkipServiceWorker(true);
 749   if (len > 0) {
 750     if (!SetPostData(&request, buf, len)) {
 751       // Uhoh - we're in trouble.  There isn't a good way
 752       // to recover at this point.  Break out.
 753       NOTREACHED();
 754       return ROUTED;
 755     }
 756   }
 757
 758   container_->loadFrameRequest(
 759       request, target_str, notify_id != 0, reinterpret_cast<void*>(notify_id));
 760   return ROUTED;
 761 }
 762
 763 NPObject* WebPluginImpl::GetWindowScriptNPObject() {
 764   if (!webframe_) {
 765     NOTREACHED();
 766     return NULL;
 767   }
 768   return webframe_->windowObject();
 769 }
 770
 771 NPObject* WebPluginImpl::GetPluginElement() {
 772   return container_->scriptableObjectForElement();
 773 }
 774
 775 bool WebPluginImpl::FindProxyForUrl(const GURL& url, std::string* proxy_list) {
 776   // Proxy resolving doesn't work in single-process mode.
 777   return false;
 778 }
 779
 780 void WebPluginImpl::SetCookie(const GURL& url,
 781                               const GURL& first_party_for_cookies,
 782                               const std::string& cookie) {
 783   if (!render_view_.get())
 784     return;
 785
 786   WebCookieJar* cookie_jar = render_frame_->cookie_jar();
 787   if (!cookie_jar) {
 788     DLOG(WARNING) << "No cookie jar!";
 789     return;
 790   }
 791
 792   cookie_jar->setCookie(
 793       url, first_party_for_cookies, WebString::fromUTF8(cookie));
 794 }
 795
 796 std::string WebPluginImpl::GetCookies(const GURL& url,
 797                                       const GURL& first_party_for_cookies) {
 798   if (!render_view_.get())
 799     return std::string();
 800
 801   WebCookieJar* cookie_jar = render_frame_->cookie_jar();
 802   if (!cookie_jar) {
 803     DLOG(WARNING) << "No cookie jar!";
 804     return std::string();
 805   }
 806
 807   return base::UTF16ToUTF8(cookie_jar->cookies(url, first_party_for_cookies));
 808 }
 809
 810 void WebPluginImpl::URLRedirectResponse(bool allow, int resource_id) {
 811   for (size_t i = 0; i < clients_.size(); ++i) {
 812     if (clients_[i].id == static_cast<unsigned long>(resource_id)) {
 813       if (clients_[i].loader.get()) {
 814         if (allow) {
 815           clients_[i].loader->setDefersLoading(false);
 816         } else {
 817           clients_[i].loader->cancel();
 818           if (clients_[i].client)
 819             clients_[i].client->DidFail(clients_[i].id);
 820         }
 821       }
 822       break;
 823     }
 824   }
 825 }
 826
 827 bool WebPluginImpl::CheckIfRunInsecureContent(const GURL& url) {
 828   if (!webframe_)
 829     return true;
 830
 831   return webframe_->checkIfRunInsecureContent(url);
 832 }
 833
 834 #if defined(OS_MACOSX)
 835 WebPluginAcceleratedSurface* WebPluginImpl::GetAcceleratedSurface(
 836     gfx::GpuPreference gpu_preference) {
 837   return NULL;
 838 }
 839
 840 void WebPluginImpl::AcceleratedPluginEnabledRendering() {
 841 }
 842
 843 void WebPluginImpl::AcceleratedPluginAllocatedIOSurface(int32 width,
 844                                                         int32 height,
 845                                                         uint32 surface_id) {
 846   next_io_surface_allocated_ = true;
 847   next_io_surface_width_ = width;
 848   next_io_surface_height_ = height;
 849   next_io_surface_id_ = surface_id;
 850 }
 851
 852 void WebPluginImpl::AcceleratedPluginSwappedIOSurface() {
 853   if (!container_)
 854     return;
 855   // Deferring the call to setBackingIOSurfaceId is an attempt to
 856   // work around garbage occasionally showing up in the plugin's
 857   // area during live resizing of Core Animation plugins. The
 858   // assumption was that by the time this was called, the plugin
 859   // process would have populated the newly allocated IOSurface. It
 860   // is not 100% clear at this point why any garbage is getting
 861   // through. More investigation is needed. http://crbug.com/105346
 862   if (next_io_surface_allocated_) {
 863     if (next_io_surface_id_) {
 864       if (!io_surface_layer_.get()) {
 865         io_surface_layer_ =
 866             cc::IOSurfaceLayer::Create(cc_blink::WebLayerImpl::LayerSettings());
 867         web_layer_.reset(new cc_blink::WebLayerImpl(io_surface_layer_));
 868         container_->setWebLayer(web_layer_.get());
 869       }
 870       io_surface_layer_->SetIOSurfaceProperties(
 871           next_io_surface_id_,
 872           gfx::Size(next_io_surface_width_, next_io_surface_height_));
 873     } else {
 874       container_->setWebLayer(NULL);
 875       web_layer_.reset();
 876       io_surface_layer_ = NULL;
 877     }
 878     next_io_surface_allocated_ = false;
 879   } else {
 880     if (io_surface_layer_.get())
 881       io_surface_layer_->SetNeedsDisplay();
 882   }
 883 }
 884 #endif
 885
 886 void WebPluginImpl::Invalidate() {
 887   if (container_)
 888     container_->invalidate();
 889 }
 890
 891 void WebPluginImpl::InvalidateRect(const gfx::Rect& rect) {
 892   if (container_)
 893     container_->invalidateRect(rect);
 894 }
 895
 896 void WebPluginImpl::OnDownloadPluginSrcUrl() {
 897   HandleURLRequestInternal(
 898       plugin_url_.spec().c_str(), "GET", NULL, NULL, 0, 0, false, DOCUMENT_URL,
 899       false, true);
 900 }
 901
 902 WebPluginResourceClient* WebPluginImpl::GetClientFromLoader(
 903     WebURLLoader* loader) {
 904   ClientInfo* client_info = GetClientInfoFromLoader(loader);
 905   if (client_info)
 906     return client_info->client;
 907   return NULL;
 908 }
 909
 910 WebPluginImpl::ClientInfo* WebPluginImpl::GetClientInfoFromLoader(
 911     WebURLLoader* loader) {
 912   for (size_t i = 0; i < clients_.size(); ++i) {
 913     if (clients_[i].loader.get() == loader)
 914       return &clients_[i];
 915   }
 916
 917   NOTREACHED();
 918   return 0;
 919 }
 920
 921 void WebPluginImpl::willSendRequest(WebURLLoader* loader,
 922                                     WebURLRequest& request,
 923                                     const WebURLResponse& response) {
 924   // TODO(jam): THIS LOGIC IS COPIED IN PluginURLFetcher::OnReceivedRedirect
 925   // until kDirectNPAPIRequests is the default and we can remove this old path.
 926   WebPluginImpl::ClientInfo* client_info = GetClientInfoFromLoader(loader);
 927   if (client_info) {
 928     // Currently this check is just to catch an https -> http redirect when
 929     // loading the main plugin src URL. Longer term, we could investigate
 930     // firing mixed diplay or scripting issues for subresource loads
 931     // initiated by plugins.
 932     if (client_info->is_plugin_src_load &&
 933         webframe_ &&
 934         !webframe_->checkIfRunInsecureContent(request.url())) {
 935       loader->cancel();
 936       client_info->client->DidFail(client_info->id);
 937       return;
 938     }
 939     if (net::HttpResponseHeaders::IsRedirectResponseCode(
 940             response.httpStatusCode())) {
 941       // If the plugin does not participate in url redirect notifications then
 942       // just block cross origin 307 POST redirects.
 943       if (!client_info->notify_redirects) {
 944         if (response.httpStatusCode() == 307 &&
 945             LowerCaseEqualsASCII(request.httpMethod().utf8(), "post")) {
 946           GURL original_request_url(response.url());
 947           GURL response_url(request.url());
 948           if (original_request_url.GetOrigin() != response_url.GetOrigin()) {
 949             loader->setDefersLoading(true);
 950             loader->cancel();
 951             client_info->client->DidFail(client_info->id);
 952             return;
 953           }
 954         }
 955       } else {
 956         loader->setDefersLoading(true);
 957       }
 958     }
 959     client_info->client->WillSendRequest(request.url(),
 960                                          response.httpStatusCode());
 961   }
 962 }
 963
 964 void WebPluginImpl::didSendData(WebURLLoader* loader,
 965                                 unsigned long long bytes_sent,
 966                                 unsigned long long total_bytes_to_be_sent) {
 967 }
 968
 969 void WebPluginImpl::didReceiveResponse(WebURLLoader* loader,
 970                                        const WebURLResponse& response) {
 971   // TODO(jam): THIS LOGIC IS COPIED IN PluginURLFetcher::OnReceivedResponse
 972   // until kDirectNPAPIRequests is the default and we can remove this old path.
 973   static const int kHttpPartialResponseStatusCode = 206;
 974   static const int kHttpResponseSuccessStatusCode = 200;
 975
 976   WebPluginResourceClient* client = GetClientFromLoader(loader);
 977   if (!client)
 978     return;
 979
 980   ResponseInfo response_info;
 981   GetResponseInfo(response, &response_info);
 982   ClientInfo* client_info = GetClientInfoFromLoader(loader);
 983   if (!client_info)
 984     return;
 985
 986   bool request_is_seekable = true;
 987   if (client->IsMultiByteResponseExpected()) {
 988     if (response.httpStatusCode() == kHttpPartialResponseStatusCode) {
 989       ClientInfo* client_info = GetClientInfoFromLoader(loader);
 990       if (!client_info)
 991         return;
 992       if (HandleHttpMultipartResponse(response, client)) {
 993         // Multiple ranges requested, data will be delivered by
 994         // MultipartResponseDelegate.
 995         client_info->data_offset = 0;
 996         return;
 997       }
 998       int64 upper_bound = 0, instance_size = 0;
 999       // Single range requested - go through original processing for
1000       // non-multipart requests, but update data offset.
1001       MultipartResponseDelegate::ReadContentRanges(response,
1002                                                    &client_info->data_offset,
1003                                                    &upper_bound,
1004                                                    &instance_size);
1005     } else if (response.httpStatusCode() == kHttpResponseSuccessStatusCode) {
1006       RenderThreadImpl::current()->RecordAction(
1007           base::UserMetricsAction("Plugin_200ForByteRange"));
1008       // If the client issued a byte range request and the server responds with
1009       // HTTP 200 OK, it indicates that the server does not support byte range
1010       // requests.
1011       // We need to emulate Firefox behavior by doing the following:-
1012       // 1. Destroy the plugin instance in the plugin process. Ensure that
1013       //    existing resource requests initiated for the plugin instance
1014       //    continue to remain valid.
1015       // 2. Create a new plugin instance and notify it about the response
1016       //    received here.
1017       if (!ReinitializePluginForResponse(loader)) {
1018         NOTREACHED();
1019         return;
1020       }
1021
1022       // The server does not support byte range requests. No point in creating
1023       // seekable streams.
1024       request_is_seekable = false;
1025
1026       delete client;
1027       client = NULL;
1028
1029       // Create a new resource client for this request.
1030       for (size_t i = 0; i < clients_.size(); ++i) {
1031         if (clients_[i].loader.get() == loader) {
1032           WebPluginResourceClient* resource_client =
1033               delegate_->CreateResourceClient(clients_[i].id, plugin_url_, 0);
1034           clients_[i].client = resource_client;
1035           client = resource_client;
1036           break;
1037         }
1038       }
1039
1040       DCHECK(client != NULL);
1041     }
1042   }
1043
1044   // Calling into a plugin could result in reentrancy if the plugin yields
1045   // control to the OS like entering a modal loop etc. Prevent this by
1046   // stopping further loading until the plugin notifies us that it is ready to
1047   // accept data
1048   loader->setDefersLoading(true);
1049
1050   client->DidReceiveResponse(
1051       response_info.mime_type,
1052       GetAllHeaders(response),
1053       response_info.expected_length,
1054       response_info.last_modified,
1055       request_is_seekable);
1056
1057   // Bug http://b/issue?id=925559. The flash plugin would not handle the HTTP
1058   // error codes in the stream header and as a result, was unaware of the
1059   // fate of the HTTP requests issued via NPN_GetURLNotify. Webkit and FF
1060   // destroy the stream and invoke the NPP_DestroyStream function on the
1061   // plugin if the HTTP request fails.
1062   const GURL& url = response.url();
1063   if (url.SchemeIs(url::kHttpScheme) || url.SchemeIs(url::kHttpsScheme)) {
1064     if (response.httpStatusCode() < 100 || response.httpStatusCode() >= 400) {
1065       // The plugin instance could be in the process of deletion here.
1066       // Verify if the WebPluginResourceClient instance still exists before
1067       // use.
1068       ClientInfo* client_info = GetClientInfoFromLoader(loader);
1069       if (client_info) {
1070         client_info->pending_failure_notification = true;
1071       }
1072     }
1073   }
1074 }
1075
1076 void WebPluginImpl::didReceiveData(WebURLLoader* loader,
1077                                    const char *buffer,
1078                                    int data_length,
1079                                    int encoded_data_length) {
1080   WebPluginResourceClient* client = GetClientFromLoader(loader);
1081   if (!client)
1082     return;
1083
1084   MultiPartResponseHandlerMap::iterator index =
1085       multi_part_response_map_.find(client);
1086   if (index != multi_part_response_map_.end()) {
1087     MultipartResponseDelegate* multi_part_handler = (*index).second;
1088     DCHECK(multi_part_handler != NULL);
1089     multi_part_handler->OnReceivedData(buffer,
1090                                        data_length,
1091                                        encoded_data_length);
1092   } else {
1093     loader->setDefersLoading(true);
1094     ClientInfo* client_info = GetClientInfoFromLoader(loader);
1095     client->DidReceiveData(buffer, data_length, client_info->data_offset);
1096     client_info->data_offset += data_length;
1097   }
1098 }
1099
1100 void WebPluginImpl::didFinishLoading(WebURLLoader* loader, double finishTime) {
1101   ClientInfo* client_info = GetClientInfoFromLoader(loader);
1102   if (client_info && client_info->client) {
1103     MultiPartResponseHandlerMap::iterator index =
1104       multi_part_response_map_.find(client_info->client);
1105     if (index != multi_part_response_map_.end()) {
1106       delete (*index).second;
1107       multi_part_response_map_.erase(index);
1108       DidStopLoading();
1109     }
1110     loader->setDefersLoading(true);
1111     WebPluginResourceClient* resource_client = client_info->client;
1112     // The ClientInfo can get deleted in the call to DidFinishLoading below.
1113     // It is not safe to access this structure after that.
1114     client_info->client = NULL;
1115     resource_client->DidFinishLoading(client_info->id);
1116   }
1117 }
1118
1119 void WebPluginImpl::didFail(WebURLLoader* loader,
1120                             const WebURLError& error) {
1121   ClientInfo* client_info = GetClientInfoFromLoader(loader);
1122   if (client_info && client_info->client) {
1123     loader->setDefersLoading(true);
1124     WebPluginResourceClient* resource_client = client_info->client;
1125     // The ClientInfo can get deleted in the call to DidFail below.
1126     // It is not safe to access this structure after that.
1127     client_info->client = NULL;
1128     resource_client->DidFail(client_info->id);
1129   }
1130 }
1131
1132 void WebPluginImpl::RemoveClient(size_t i) {
1133   clients_.erase(clients_.begin() + i);
1134 }
1135
1136 void WebPluginImpl::RemoveClient(WebURLLoader* loader) {
1137   for (size_t i = 0; i < clients_.size(); ++i) {
1138     if (clients_[i].loader.get() == loader) {
1139       RemoveClient(i);
1140       return;
1141     }
1142   }
1143 }
1144
1145 void WebPluginImpl::SetContainer(WebPluginContainer* container) {
1146   if (!container)
1147     TearDownPluginInstance(NULL);
1148   container_ = container;
1149   if (container_)
1150     container_->allowScriptObjects();
1151 }
1152
1153 void WebPluginImpl::HandleURLRequest(const char* url,
1154                                      const char* method,
1155                                      const char* target,
1156                                      const char* buf,
1157                                      unsigned int len,
1158                                      int notify_id,
1159                                      bool popups_allowed,
1160                                      bool notify_redirects) {
1161   // GetURL/PostURL requests initiated explicitly by plugins should specify the
1162   // plugin SRC url as the referrer if it is available.
1163   HandleURLRequestInternal(
1164       url, method, target, buf, len, notify_id, popups_allowed, PLUGIN_SRC,
1165       notify_redirects, false);
1166 }
1167
1168 void WebPluginImpl::HandleURLRequestInternal(const char* url,
1169                                              const char* method,
1170                                              const char* target,
1171                                              const char* buf,
1172                                              unsigned int len,
1173                                              int notify_id,
1174                                              bool popups_allowed,
1175                                              ReferrerValue referrer_flag,
1176                                              bool notify_redirects,
1177                                              bool is_plugin_src_load) {
1178   // For this request, we either route the output to a frame
1179   // because a target has been specified, or we handle the request
1180   // here, i.e. by executing the script if it is a javascript url
1181   // or by initiating a download on the URL, etc. There is one special
1182   // case in that the request is a javascript url and the target is "_self",
1183   // in which case we route the output to the plugin rather than routing it
1184   // to the plugin's frame.
1185   bool is_javascript_url =
1186       url::FindAndCompareScheme(url, strlen(url), url::kJavaScriptScheme, NULL);
1187   RoutingStatus routing_status = RouteToFrame(
1188       url, is_javascript_url, popups_allowed, method, target, buf, len,
1189       notify_id, referrer_flag);
1190   if (routing_status == ROUTED)
1191     return;
1192
1193   if (is_javascript_url) {
1194     GURL gurl(url);
1195     WebString result = container_->executeScriptURL(gurl, popups_allowed);
1196
1197     // delegate_ could be NULL because executeScript caused the container to
1198     // be deleted.
1199     if (delegate_) {
1200       delegate_->SendJavaScriptStream(
1201           gurl, result.utf8(), !result.isNull(), notify_id);
1202     }
1203
1204     return;
1205   }
1206
1207   unsigned long resource_id = GetNextResourceId();
1208   if (!resource_id)
1209     return;
1210
1211   GURL complete_url = CompleteURL(url);
1212   // Remove when flash bug is fixed. http://crbug.com/40016.
1213   if (!WebPluginImpl::IsValidUrl(complete_url, referrer_flag))
1214     return;
1215
1216   // If the RouteToFrame call returned a failure then inform the result
1217   // back to the plugin asynchronously.
1218   if ((routing_status == INVALID_URL) ||
1219       (routing_status == GENERAL_FAILURE)) {
1220     WebPluginResourceClient* resource_client = delegate_->CreateResourceClient(
1221         resource_id, complete_url, notify_id);
1222     if (resource_client)
1223       resource_client->DidFail(resource_id);
1224     return;
1225   }
1226
1227   // CreateResourceClient() sends a synchronous IPC message so it's possible
1228   // that TearDownPluginInstance() may have been called in the nested
1229   // message loop.  If so, don't start the request.
1230   if (!delegate_)
1231     return;
1232
1233   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
1234           switches::kDisableDirectNPAPIRequests)) {
1235     // We got here either because the plugin called GetURL/PostURL, or because
1236     // we're fetching the data for an embed tag. If we're in multi-process mode,
1237     // we want to fetch the data in the plugin process as the renderer won't be
1238     // able to request any origin when site isolation is in place. So bounce
1239     // this request back to the plugin process which will use ResourceDispatcher
1240     // to fetch the url.
1241
1242     // TODO(jam): any better way of getting this? Can't find a way to get
1243     // frame()->loader()->outgoingReferrer() which
1244     // WebFrameImpl::setReferrerForRequest does.
1245     WebURLRequest request(complete_url);
1246     SetReferrer(&request, referrer_flag);
1247     Referrer referrer(
1248         GURL(request.httpHeaderField(WebString::fromUTF8("Referer"))),
1249         request.referrerPolicy());
1250
1251     GURL first_party_for_cookies = webframe_->document().firstPartyForCookies();
1252     delegate_->FetchURL(resource_id, notify_id, complete_url,
1253                         first_party_for_cookies, method, buf, len, referrer,
1254                         notify_redirects, is_plugin_src_load, 0,
1255                         render_frame_->GetRoutingID(),
1256                         render_view_->GetRoutingID());
1257   } else {
1258     WebPluginResourceClient* resource_client = delegate_->CreateResourceClient(
1259         resource_id, complete_url, notify_id);
1260     if (!resource_client)
1261       return;
1262     InitiateHTTPRequest(resource_id, resource_client, complete_url, method, buf,
1263                         len, NULL, referrer_flag, notify_redirects,
1264                         is_plugin_src_load);
1265   }
1266 }
1267
1268 unsigned long WebPluginImpl::GetNextResourceId() {
1269   if (!webframe_)
1270     return 0;
1271   WebView* view = webframe_->view();
1272   if (!view)
1273     return 0;
1274   return view->createUniqueIdentifierForRequest();
1275 }
1276
1277 bool WebPluginImpl::InitiateHTTPRequest(unsigned long resource_id,
1278                                         WebPluginResourceClient* client,
1279                                         const GURL& url,
1280                                         const char* method,
1281                                         const char* buf,
1282                                         int buf_len,
1283                                         const char* range_info,
1284                                         ReferrerValue referrer_flag,
1285                                         bool notify_redirects,
1286                                         bool is_plugin_src_load) {
1287   if (!client) {
1288     NOTREACHED();
1289     return false;
1290   }
1291
1292   ClientInfo info;
1293   info.id = resource_id;
1294   info.client = client;
1295   info.request.initialize();
1296   info.request.setURL(url);
1297   info.request.setFirstPartyForCookies(
1298       webframe_->document().firstPartyForCookies());
1299   info.request.setRequestorProcessID(delegate_->GetProcessId());
1300   // TODO(mkwst): Is this a request for a plugin object itself
1301   // (RequestContextObject), or a request that the plugin makes
1302   // (RequestContextPlugin)?
1303   info.request.setRequestContext(WebURLRequest::RequestContextPlugin);
1304   info.request.setHTTPMethod(WebString::fromUTF8(method));
1305   // ServiceWorker is disabled for NPAPI.
1306   info.request.setSkipServiceWorker(true);
1307   info.pending_failure_notification = false;
1308   info.notify_redirects = notify_redirects;
1309   info.is_plugin_src_load = is_plugin_src_load;
1310   info.data_offset = 0;
1311
1312   if (range_info) {
1313     info.request.addHTTPHeaderField(WebString::fromUTF8("Range"),
1314                                     WebString::fromUTF8(range_info));
1315   }
1316
1317   if (strcmp(method, "POST") == 0) {
1318     // Adds headers or form data to a request.  This must be called before
1319     // we initiate the actual request.
1320     SetPostData(&info.request, buf, buf_len);
1321   }
1322
1323   SetReferrer(&info.request, referrer_flag);
1324
1325   WebURLLoaderOptions options;
1326   options.allowCredentials = true;
1327   options.crossOriginRequestPolicy =
1328       WebURLLoaderOptions::CrossOriginRequestPolicyAllow;
1329   info.loader.reset(webframe_->createAssociatedURLLoader(options));
1330   if (!info.loader.get())
1331     return false;
1332   info.loader->loadAsynchronously(info.request, &loader_client_);
1333
1334   clients_.push_back(info);
1335   return true;
1336 }
1337
1338 void WebPluginImpl::CancelDocumentLoad() {
1339   if (webframe_) {
1340     ignore_response_error_ = true;
1341     webframe_->stopLoading();
1342   }
1343 }
1344
1345 void WebPluginImpl::InitiateHTTPRangeRequest(
1346     const char* url, const char* range_info, int range_request_id) {
1347   unsigned long resource_id = GetNextResourceId();
1348   if (!resource_id)
1349     return;
1350
1351   GURL complete_url = CompleteURL(url);
1352   // Remove when flash bug is fixed. http://crbug.com/40016.
1353   if (!WebPluginImpl::IsValidUrl(complete_url,
1354                                  load_manually_ ? NO_REFERRER : PLUGIN_SRC))
1355     return;
1356
1357   WebPluginResourceClient* resource_client =
1358       delegate_->CreateSeekableResourceClient(resource_id, range_request_id);
1359   InitiateHTTPRequest(
1360       resource_id, resource_client, complete_url, "GET", NULL, 0, range_info,
1361       load_manually_ ? NO_REFERRER : PLUGIN_SRC, false, false);
1362 }
1363
1364 void WebPluginImpl::DidStartLoading() {
1365   if (render_view_.get()) {
1366     // TODO(darin): Make is_loading_ be a counter!
1367     render_view_->DidStartLoading();
1368   }
1369 }
1370
1371 void WebPluginImpl::DidStopLoading() {
1372   if (render_view_.get()) {
1373     // TODO(darin): Make is_loading_ be a counter!
1374     render_view_->DidStopLoading();
1375   }
1376 }
1377
1378 void WebPluginImpl::SetDeferResourceLoading(unsigned long resource_id,
1379                                             bool defer) {
1380   std::vector<ClientInfo>::iterator client_index = clients_.begin();
1381   while (client_index != clients_.end()) {
1382     ClientInfo& client_info = *client_index;
1383
1384     if (client_info.id == resource_id) {
1385       client_info.loader->setDefersLoading(defer);
1386
1387       // If we determined that the request had failed via the HTTP headers
1388       // in the response then we send out a failure notification to the
1389       // plugin process, as certain plugins don't handle HTTP failure codes
1390       // correctly.
1391       if (!defer && client_info.client &&
1392           client_info.pending_failure_notification) {
1393         // The ClientInfo and the iterator can become invalid due to the call
1394         // to DidFail below.
1395         WebPluginResourceClient* resource_client = client_info.client;
1396         client_info.loader->cancel();
1397         clients_.erase(client_index++);
1398         resource_client->DidFail(resource_id);
1399       }
1400       break;
1401     }
1402     client_index++;
1403   }
1404 }
1405
1406 bool WebPluginImpl::IsOffTheRecord() {
1407   return false;
1408 }
1409
1410 bool WebPluginImpl::HandleHttpMultipartResponse(
1411     const WebURLResponse& response, WebPluginResourceClient* client) {
1412   std::string multipart_boundary;
1413   if (!MultipartResponseDelegate::ReadMultipartBoundary(
1414           response, &multipart_boundary)) {
1415     return false;
1416   }
1417
1418   DidStartLoading();
1419
1420   MultiPartResponseClient* multi_part_response_client =
1421       new MultiPartResponseClient(client);
1422
1423   MultipartResponseDelegate* multi_part_response_handler =
1424       new MultipartResponseDelegate(multi_part_response_client, NULL,
1425                                     response,
1426                                     multipart_boundary);
1427   multi_part_response_map_[client] = multi_part_response_handler;
1428   return true;
1429 }
1430
1431 bool WebPluginImpl::ReinitializePluginForResponse(
1432     WebURLLoader* loader) {
1433   WebFrame* webframe = webframe_;
1434   if (!webframe)
1435     return false;
1436
1437   WebView* webview = webframe->view();
1438   if (!webview)
1439     return false;
1440
1441   WebPluginContainer* container_widget = container_;
1442
1443   // Destroy the current plugin instance.
1444   TearDownPluginInstance(loader);
1445
1446   container_ = container_widget;
1447   webframe_ = webframe;
1448
1449   WebPluginDelegateProxy* plugin_delegate = new WebPluginDelegateProxy(
1450       this, mime_type_, render_view_, render_frame_);
1451
1452   // Store the plugin's unique identifier, used by the container to track its
1453   // script objects, and enable script objects (since Initialize may use them
1454   // even if it fails).
1455   npp_ = plugin_delegate->GetPluginNPP();
1456   container_->allowScriptObjects();
1457
1458   bool ok = plugin_delegate && plugin_delegate->Initialize(
1459       plugin_url_, arg_names_, arg_values_, load_manually_);
1460
1461   if (!ok) {
1462     container_->clearScriptObjects();
1463     container_ = NULL;
1464     // TODO(iyengar) Should we delete the current plugin instance here?
1465     return false;
1466   }
1467
1468   delegate_ = plugin_delegate;
1469
1470   // Force a geometry update to occur to ensure that the plugin becomes
1471   // visible.
1472   container_->reportGeometry();
1473
1474   // The plugin move sequences accumulated via DidMove are sent to the browser
1475   // whenever the renderer paints. Force a paint here to ensure that changes
1476   // to the plugin window are propagated to the browser.
1477   container_->invalidate();
1478   return true;
1479 }
1480
1481 void WebPluginImpl::TearDownPluginInstance(
1482     WebURLLoader* loader_to_ignore) {
1483   // JavaScript garbage collection may cause plugin script object references to
1484   // be retained long after the plugin is destroyed. Some plugins won't cope
1485   // with their objects being released after they've been destroyed, and once
1486   // we've actually unloaded the plugin the object's releaseobject() code may
1487   // no longer be in memory. The container tracks the plugin's objects and lets
1488   // us invalidate them, releasing the references to them held by the JavaScript
1489   // runtime.
1490   if (container_) {
1491     container_->clearScriptObjects();
1492     container_->setWebLayer(NULL);
1493   }
1494
1495   // Call PluginDestroyed() first to prevent the plugin from calling us back
1496   // in the middle of tearing down the render tree.
1497   if (delegate_) {
1498     // The plugin may call into the browser and pass script objects even during
1499     // teardown, so temporarily re-enable plugin script objects.
1500     DCHECK(container_);
1501     container_->allowScriptObjects();
1502
1503     delegate_->PluginDestroyed();
1504     delegate_ = NULL;
1505
1506     // Invalidate any script objects created during teardown here, before the
1507     // plugin might actually be unloaded.
1508     container_->clearScriptObjects();
1509   }
1510
1511   // Cancel any pending requests because otherwise this deleted object will
1512   // be called by the ResourceDispatcher.
1513   std::vector<ClientInfo>::iterator client_index = clients_.begin();
1514   while (client_index != clients_.end()) {
1515     ClientInfo& client_info = *client_index;
1516
1517     if (loader_to_ignore == client_info.loader) {
1518       client_index++;
1519       continue;
1520     }
1521
1522     if (client_info.loader.get())
1523       client_info.loader->cancel();
1524
1525     client_index = clients_.erase(client_index);
1526   }
1527
1528   // This needs to be called now and not in the destructor since the
1529   // webframe_ might not be valid anymore.
1530   webframe_ = NULL;
1531   weak_factory_.InvalidateWeakPtrs();
1532 }
1533
1534 void WebPluginImpl::SetReferrer(blink::WebURLRequest* request,
1535                                 ReferrerValue referrer_flag) {
1536   switch (referrer_flag) {
1537     case DOCUMENT_URL:
1538       webframe_->setReferrerForRequest(*request, GURL());
1539       break;
1540
1541     case PLUGIN_SRC:
1542       webframe_->setReferrerForRequest(*request, plugin_url_);
1543       break;
1544
1545     default:
1546       break;
1547   }
1548 }
1549
1550 }  // namespace content