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