src/content/child/npapi/plugin_instance.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/child/npapi/plugin_instance.h"
   6
   7 #include "base/bind.h"
   8 #include "base/file_util.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "build/build_config.h"
  13 #include "content/child/npapi/plugin_host.h"
  14 #include "content/child/npapi/plugin_lib.h"
  15 #include "content/child/npapi/plugin_stream_url.h"
  16 #include "content/child/npapi/plugin_string_stream.h"
  17 #include "content/child/npapi/webplugin.h"
  18 #include "content/child/npapi/webplugin_delegate.h"
  19 #include "content/child/npapi/webplugin_resource_client.h"
  20 #include "content/public/common/content_constants.h"
  21 #include "net/base/escape.h"
  22
  23 #if defined(OS_MACOSX)
  24 #include <ApplicationServices/ApplicationServices.h>
  25 #endif
  26
  27 namespace content {
  28
  29 PluginInstance::PluginInstance(PluginLib* plugin, const std::string& mime_type)
  30     : plugin_(plugin),
  31       npp_(0),
  32       host_(PluginHost::Singleton()),
  33       npp_functions_(plugin->functions()),
  34       window_handle_(0),
  35       windowless_(false),
  36       transparent_(true),
  37       webplugin_(0),
  38       mime_type_(mime_type),
  39       get_notify_data_(0),
  40       use_mozilla_user_agent_(false),
  41 #if defined (OS_MACOSX)
  42 #ifdef NP_NO_QUICKDRAW
  43       drawing_model_(NPDrawingModelCoreGraphics),
  44 #else
  45       drawing_model_(NPDrawingModelQuickDraw),
  46 #endif
  47 #ifdef NP_NO_CARBON
  48       event_model_(NPEventModelCocoa),
  49 #else
  50       event_model_(NPEventModelCarbon),
  51 #endif
  52       currently_handled_event_(NULL),
  53 #endif
  54       message_loop_(base::MessageLoop::current()),
  55       load_manually_(false),
  56       in_close_streams_(false),
  57       next_timer_id_(1),
  58       next_notify_id_(0),
  59       next_range_request_id_(0),
  60       handles_url_redirects_(false) {
  61   npp_ = new NPP_t();
  62   npp_->ndata = 0;
  63   npp_->pdata = 0;
  64
  65   if (mime_type_ == kFlashPluginSwfMimeType)
  66     transparent_ = false;
  67
  68   memset(&zero_padding_, 0, sizeof(zero_padding_));
  69   DCHECK(message_loop_);
  70 }
  71
  72 PluginInstance::~PluginInstance() {
  73   CloseStreams();
  74
  75   if (npp_ != 0) {
  76     delete npp_;
  77     npp_ = 0;
  78   }
  79
  80   if (plugin_.get())
  81     plugin_->CloseInstance();
  82 }
  83
  84 PluginStreamUrl* PluginInstance::CreateStream(unsigned long resource_id,
  85                                               const GURL& url,
  86                                               const std::string& mime_type,
  87                                               int notify_id) {
  88
  89   bool notify;
  90   void* notify_data;
  91   GetNotifyData(notify_id, &notify, &notify_data);
  92   PluginStreamUrl* stream = new PluginStreamUrl(
  93       resource_id, url, this, notify, notify_data);
  94
  95   AddStream(stream);
  96   return stream;
  97 }
  98
  99 void PluginInstance::AddStream(PluginStream* stream) {
 100   open_streams_.push_back(make_scoped_refptr(stream));
 101 }
 102
 103 void PluginInstance::RemoveStream(PluginStream* stream) {
 104   if (in_close_streams_)
 105     return;
 106
 107   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 108   for (stream_index = open_streams_.begin();
 109        stream_index != open_streams_.end(); ++stream_index) {
 110     if (stream_index->get() == stream) {
 111       open_streams_.erase(stream_index);
 112       break;
 113     }
 114   }
 115 }
 116
 117 bool PluginInstance::IsValidStream(const NPStream* stream) {
 118   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 119   for (stream_index = open_streams_.begin();
 120           stream_index != open_streams_.end(); ++stream_index) {
 121     if ((*stream_index)->stream() == stream)
 122       return true;
 123   }
 124
 125   return false;
 126 }
 127
 128 void PluginInstance::CloseStreams() {
 129   in_close_streams_ = true;
 130   for (unsigned int index = 0; index < open_streams_.size(); ++index) {
 131     // Close all streams on the way down.
 132     open_streams_[index]->Close(NPRES_USER_BREAK);
 133   }
 134   open_streams_.clear();
 135   in_close_streams_ = false;
 136 }
 137
 138 WebPluginResourceClient* PluginInstance::GetRangeRequest(
 139     int id) {
 140   PendingRangeRequestMap::iterator iter = pending_range_requests_.find(id);
 141   if (iter == pending_range_requests_.end()) {
 142     NOTREACHED();
 143     return NULL;
 144   }
 145
 146   WebPluginResourceClient* rv = iter->second->AsResourceClient();
 147   pending_range_requests_.erase(iter);
 148   return rv;
 149 }
 150
 151 bool PluginInstance::Start(const GURL& url,
 152                            char** const param_names,
 153                            char** const param_values,
 154                            int param_count,
 155                            bool load_manually) {
 156   load_manually_ = load_manually;
 157   unsigned short mode = load_manually_ ? NP_FULL : NP_EMBED;
 158   npp_->ndata = this;
 159
 160   NPError err = NPP_New(mode, param_count,
 161       const_cast<char **>(param_names), const_cast<char **>(param_values));
 162
 163   if (err == NPERR_NO_ERROR) {
 164     handles_url_redirects_ =
 165         ((npp_functions_->version >= NPVERS_HAS_URL_REDIRECT_HANDLING) &&
 166          (npp_functions_->urlredirectnotify));
 167   }
 168   return err == NPERR_NO_ERROR;
 169 }
 170
 171 NPObject *PluginInstance::GetPluginScriptableObject() {
 172   NPObject *value = NULL;
 173   NPError error = NPP_GetValue(NPPVpluginScriptableNPObject, &value);
 174   if (error != NPERR_NO_ERROR || value == NULL)
 175     return NULL;
 176   return value;
 177 }
 178
 179 bool PluginInstance::GetFormValue(base::string16* value) {
 180   // Plugins will allocate memory for the return value by using NPN_MemAlloc().
 181   char *plugin_value = NULL;
 182   NPError error = NPP_GetValue(NPPVformValue, &plugin_value);
 183   if (error != NPERR_NO_ERROR || !plugin_value) {
 184     return false;
 185   }
 186   // Assumes the result is UTF8 text, as Firefox does.
 187   *value = UTF8ToUTF16(plugin_value);
 188   host_->host_functions()->memfree(plugin_value);
 189   return true;
 190 }
 191
 192 // WebPluginLoadDelegate methods
 193 void PluginInstance::DidFinishLoadWithReason(const GURL& url,
 194                                              NPReason reason,
 195                                              int notify_id) {
 196   bool notify;
 197   void* notify_data;
 198   GetNotifyData(notify_id, &notify, &notify_data);
 199   if (!notify) {
 200     NOTREACHED();
 201     return;
 202   }
 203
 204   NPP_URLNotify(url.spec().c_str(), reason, notify_data);
 205 }
 206
 207 unsigned PluginInstance::GetBackingTextureId() {
 208   // By default the plugin instance is not backed by an OpenGL texture.
 209   return 0;
 210 }
 211
 212 // NPAPI methods
 213 NPError PluginInstance::NPP_New(unsigned short mode,
 214                                 short argc,
 215                                 char* argn[],
 216                                 char* argv[]) {
 217   DCHECK(npp_functions_ != 0);
 218   DCHECK(npp_functions_->newp != 0);
 219   DCHECK(argc >= 0);
 220
 221   if (npp_functions_->newp != 0) {
 222     return npp_functions_->newp(
 223         (NPMIMEType)mime_type_.c_str(), npp_, mode,  argc, argn, argv, NULL);
 224   }
 225   return NPERR_INVALID_FUNCTABLE_ERROR;
 226 }
 227
 228 void PluginInstance::NPP_Destroy() {
 229   DCHECK(npp_functions_ != 0);
 230   DCHECK(npp_functions_->destroy != 0);
 231
 232   if (npp_functions_->destroy != 0) {
 233     NPSavedData *savedData = 0;
 234     npp_functions_->destroy(npp_, &savedData);
 235
 236     // TODO: Support savedData.  Technically, these need to be
 237     //       saved on a per-URL basis, and then only passed
 238     //       to new instances of the plugin at the same URL.
 239     //       Sounds like a huge security risk.  When we do support
 240     //       these, we should pass them back to the PluginLib
 241     //       to be stored there.
 242     DCHECK(savedData == 0);
 243   }
 244
 245   for (unsigned int file_index = 0; file_index < files_created_.size();
 246        file_index++) {
 247     base::DeleteFile(files_created_[file_index], false);
 248   }
 249
 250   // Ensure that no timer callbacks are invoked after NPP_Destroy.
 251   timers_.clear();
 252 }
 253
 254 NPError PluginInstance::NPP_SetWindow(NPWindow* window) {
 255   DCHECK(npp_functions_ != 0);
 256   DCHECK(npp_functions_->setwindow != 0);
 257
 258   if (npp_functions_->setwindow != 0) {
 259     return npp_functions_->setwindow(npp_, window);
 260   }
 261   return NPERR_INVALID_FUNCTABLE_ERROR;
 262 }
 263
 264 NPError PluginInstance::NPP_NewStream(NPMIMEType type,
 265                                       NPStream* stream,
 266                                       NPBool seekable,
 267                                       unsigned short* stype) {
 268   DCHECK(npp_functions_ != 0);
 269   DCHECK(npp_functions_->newstream != 0);
 270   if (npp_functions_->newstream != 0) {
 271       return npp_functions_->newstream(npp_, type, stream, seekable, stype);
 272   }
 273   return NPERR_INVALID_FUNCTABLE_ERROR;
 274 }
 275
 276 NPError PluginInstance::NPP_DestroyStream(NPStream* stream, NPReason reason) {
 277   DCHECK(npp_functions_ != 0);
 278   DCHECK(npp_functions_->destroystream != 0);
 279
 280   if (stream == NULL || !IsValidStream(stream) || (stream->ndata == NULL))
 281     return NPERR_INVALID_INSTANCE_ERROR;
 282
 283   if (npp_functions_->destroystream != 0) {
 284     NPError result = npp_functions_->destroystream(npp_, stream, reason);
 285     stream->ndata = NULL;
 286     return result;
 287   }
 288   return NPERR_INVALID_FUNCTABLE_ERROR;
 289 }
 290
 291 int PluginInstance::NPP_WriteReady(NPStream* stream) {
 292   DCHECK(npp_functions_ != 0);
 293   DCHECK(npp_functions_->writeready != 0);
 294   if (npp_functions_->writeready != 0) {
 295     return npp_functions_->writeready(npp_, stream);
 296   }
 297   return 0;
 298 }
 299
 300 int PluginInstance::NPP_Write(NPStream* stream,
 301                               int offset,
 302                               int len,
 303                               void* buffer) {
 304   DCHECK(npp_functions_ != 0);
 305   DCHECK(npp_functions_->write != 0);
 306   if (npp_functions_->write != 0) {
 307     return npp_functions_->write(npp_, stream, offset, len, buffer);
 308   }
 309   return 0;
 310 }
 311
 312 void PluginInstance::NPP_StreamAsFile(NPStream* stream, const char* fname) {
 313   DCHECK(npp_functions_ != 0);
 314   DCHECK(npp_functions_->asfile != 0);
 315   if (npp_functions_->asfile != 0) {
 316     npp_functions_->asfile(npp_, stream, fname);
 317   }
 318
 319   // Creating a temporary FilePath instance on the stack as the explicit
 320   // FilePath constructor with StringType as an argument causes a compiler
 321   // error when invoked via vector push back.
 322   base::FilePath file_name = base::FilePath::FromUTF8Unsafe(fname);
 323   files_created_.push_back(file_name);
 324 }
 325
 326 void PluginInstance::NPP_URLNotify(const char* url,
 327                                    NPReason reason,
 328                                    void* notifyData) {
 329   DCHECK(npp_functions_ != 0);
 330   DCHECK(npp_functions_->urlnotify != 0);
 331   if (npp_functions_->urlnotify != 0) {
 332     npp_functions_->urlnotify(npp_, url, reason, notifyData);
 333   }
 334 }
 335
 336 NPError PluginInstance::NPP_GetValue(NPPVariable variable, void* value) {
 337   DCHECK(npp_functions_ != 0);
 338   // getvalue is NULL for Shockwave
 339   if (npp_functions_->getvalue != 0) {
 340     return npp_functions_->getvalue(npp_, variable, value);
 341   }
 342   return NPERR_INVALID_FUNCTABLE_ERROR;
 343 }
 344
 345 NPError PluginInstance::NPP_SetValue(NPNVariable variable, void* value) {
 346   DCHECK(npp_functions_ != 0);
 347   if (npp_functions_->setvalue != 0) {
 348     return npp_functions_->setvalue(npp_, variable, value);
 349   }
 350   return NPERR_INVALID_FUNCTABLE_ERROR;
 351 }
 352
 353 short PluginInstance::NPP_HandleEvent(void* event) {
 354   DCHECK(npp_functions_ != 0);
 355   DCHECK(npp_functions_->event != 0);
 356   if (npp_functions_->event != 0) {
 357     return npp_functions_->event(npp_, (void*)event);
 358   }
 359   return false;
 360 }
 361
 362 bool PluginInstance::NPP_Print(NPPrint* platform_print) {
 363   DCHECK(npp_functions_ != 0);
 364   if (npp_functions_->print != 0) {
 365     npp_functions_->print(npp_, platform_print);
 366     return true;
 367   }
 368   return false;
 369 }
 370
 371 void PluginInstance::NPP_URLRedirectNotify(const char* url, int32_t status,
 372                                            void* notify_data) {
 373   DCHECK(npp_functions_ != 0);
 374   if (npp_functions_->urlredirectnotify != 0) {
 375     npp_functions_->urlredirectnotify(npp_, url, status, notify_data);
 376   }
 377 }
 378
 379 void PluginInstance::SendJavaScriptStream(const GURL& url,
 380                                           const std::string& result,
 381                                           bool success,
 382                                           int notify_id) {
 383   bool notify;
 384   void* notify_data;
 385   GetNotifyData(notify_id, &notify, &notify_data);
 386
 387   if (success) {
 388     PluginStringStream *stream =
 389         new PluginStringStream(this, url, notify, notify_data);
 390     AddStream(stream);
 391     stream->SendToPlugin(result, "text/html");
 392   } else {
 393     // NOTE: Sending an empty stream here will crash MacroMedia
 394     // Flash 9.  Just send the URL Notify.
 395     if (notify)
 396       NPP_URLNotify(url.spec().c_str(), NPRES_DONE, notify_data);
 397   }
 398 }
 399
 400 void PluginInstance::DidReceiveManualResponse(const GURL& url,
 401                                               const std::string& mime_type,
 402                                               const std::string& headers,
 403                                               uint32 expected_length,
 404                                               uint32 last_modified) {
 405   DCHECK(load_manually_);
 406
 407   plugin_data_stream_ = CreateStream(-1, url, mime_type, 0);
 408   plugin_data_stream_->DidReceiveResponse(mime_type, headers, expected_length,
 409                                           last_modified, true);
 410 }
 411
 412 void PluginInstance::DidReceiveManualData(const char* buffer, int length) {
 413   DCHECK(load_manually_);
 414   if (plugin_data_stream_.get() != NULL) {
 415     plugin_data_stream_->DidReceiveData(buffer, length, 0);
 416   }
 417 }
 418
 419 void PluginInstance::DidFinishManualLoading() {
 420   DCHECK(load_manually_);
 421   if (plugin_data_stream_.get() != NULL) {
 422     plugin_data_stream_->DidFinishLoading(plugin_data_stream_->ResourceId());
 423     plugin_data_stream_->Close(NPRES_DONE);
 424     plugin_data_stream_ = NULL;
 425   }
 426 }
 427
 428 void PluginInstance::DidManualLoadFail() {
 429   DCHECK(load_manually_);
 430   if (plugin_data_stream_.get() != NULL) {
 431     plugin_data_stream_->DidFail(plugin_data_stream_->ResourceId());
 432     plugin_data_stream_ = NULL;
 433   }
 434 }
 435
 436 void PluginInstance::PluginThreadAsyncCall(void (*func)(void*),
 437                                            void* user_data) {
 438   message_loop_->PostTask(
 439       FROM_HERE, base::Bind(&PluginInstance::OnPluginThreadAsyncCall, this,
 440                             func, user_data));
 441 }
 442
 443 void PluginInstance::OnPluginThreadAsyncCall(void (*func)(void*),
 444                                              void* user_data) {
 445   // Do not invoke the callback if NPP_Destroy has already been invoked.
 446   if (webplugin_)
 447     func(user_data);
 448 }
 449
 450 uint32 PluginInstance::ScheduleTimer(uint32 interval,
 451                                      NPBool repeat,
 452                                      void (*func)(NPP id, uint32 timer_id)) {
 453   // Use next timer id.
 454   uint32 timer_id;
 455   timer_id = next_timer_id_;
 456   ++next_timer_id_;
 457   DCHECK(next_timer_id_ != 0);
 458
 459   // Record timer interval and repeat.
 460   TimerInfo info;
 461   info.interval = interval;
 462   info.repeat = repeat ? true : false;
 463   timers_[timer_id] = info;
 464
 465   // Schedule the callback.
 466   base::MessageLoop::current()->PostDelayedTask(
 467       FROM_HERE,
 468       base::Bind(&PluginInstance::OnTimerCall, this, func, npp_, timer_id),
 469       base::TimeDelta::FromMilliseconds(interval));
 470   return timer_id;
 471 }
 472
 473 void PluginInstance::UnscheduleTimer(uint32 timer_id) {
 474   // Remove info about the timer.
 475   TimerMap::iterator it = timers_.find(timer_id);
 476   if (it != timers_.end())
 477     timers_.erase(it);
 478 }
 479
 480 #if !defined(OS_MACOSX)
 481 NPError PluginInstance::PopUpContextMenu(NPMenu* menu) {
 482   NOTIMPLEMENTED();
 483   return NPERR_GENERIC_ERROR;
 484 }
 485 #endif
 486
 487 void PluginInstance::OnTimerCall(void (*func)(NPP id, uint32 timer_id),
 488                                  NPP id,
 489                                  uint32 timer_id) {
 490   // Do not invoke callback if the timer has been unscheduled.
 491   TimerMap::iterator it = timers_.find(timer_id);
 492   if (it == timers_.end())
 493     return;
 494
 495   // Get all information about the timer before invoking the callback. The
 496   // callback might unschedule the timer.
 497   TimerInfo info = it->second;
 498
 499   func(id, timer_id);
 500
 501   // If the timer was unscheduled by the callback, just free up the timer id.
 502   if (timers_.find(timer_id) == timers_.end())
 503     return;
 504
 505   // Reschedule repeating timers after invoking the callback so callback is not
 506   // re-entered if it pumps the message loop.
 507   if (info.repeat) {
 508     base::MessageLoop::current()->PostDelayedTask(
 509         FROM_HERE,
 510         base::Bind(&PluginInstance::OnTimerCall, this, func, npp_, timer_id),
 511         base::TimeDelta::FromMilliseconds(info.interval));
 512   } else {
 513     timers_.erase(it);
 514   }
 515 }
 516
 517 void PluginInstance::PushPopupsEnabledState(bool enabled) {
 518   popups_enabled_stack_.push(enabled);
 519 }
 520
 521 void PluginInstance::PopPopupsEnabledState() {
 522   popups_enabled_stack_.pop();
 523 }
 524
 525 void PluginInstance::RequestRead(NPStream* stream, NPByteRange* range_list) {
 526   std::string range_info = "bytes=";
 527
 528   while (range_list) {
 529     range_info += base::IntToString(range_list->offset);
 530     range_info.push_back('-');
 531     range_info +=
 532         base::IntToString(range_list->offset + range_list->length - 1);
 533     range_list = range_list->next;
 534     if (range_list)
 535       range_info.push_back(',');
 536   }
 537
 538   if (plugin_data_stream_.get()) {
 539     if (plugin_data_stream_->stream() == stream) {
 540       webplugin_->CancelDocumentLoad();
 541       plugin_data_stream_ = NULL;
 542     }
 543   }
 544
 545   // The lifetime of a NPStream instance depends on the PluginStream instance
 546   // which owns it. When a plugin invokes NPN_RequestRead on a seekable stream,
 547   // we don't want to create a new stream when the corresponding response is
 548   // received. We send over a cookie which represents the PluginStream
 549   // instance which is sent back from the renderer when the response is
 550   // received.
 551   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 552   for (stream_index = open_streams_.begin();
 553           stream_index != open_streams_.end(); ++stream_index) {
 554     PluginStream* plugin_stream = stream_index->get();
 555     if (plugin_stream->stream() == stream) {
 556       // A stream becomes seekable the first time NPN_RequestRead
 557       // is called on it.
 558       plugin_stream->set_seekable(true);
 559
 560       pending_range_requests_[++next_range_request_id_] = plugin_stream;
 561       webplugin_->InitiateHTTPRangeRequest(
 562           stream->url, range_info.c_str(), next_range_request_id_);
 563       return;
 564     }
 565   }
 566   NOTREACHED();
 567 }
 568
 569 void PluginInstance::RequestURL(const char* url,
 570                                 const char* method,
 571                                 const char* target,
 572                                 const char* buf,
 573                                 unsigned int len,
 574                                 bool notify,
 575                                 void* notify_data) {
 576   int notify_id = 0;
 577   if (notify) {
 578     notify_id = ++next_notify_id_;
 579     pending_requests_[notify_id] = notify_data;
 580   }
 581
 582   webplugin_->HandleURLRequest(
 583       url, method, target, buf, len, notify_id, popups_allowed(),
 584       notify ? handles_url_redirects_ : false);
 585 }
 586
 587 bool PluginInstance::ConvertPoint(double source_x, double source_y,
 588                                   NPCoordinateSpace source_space,
 589                                   double* dest_x, double* dest_y,
 590                                   NPCoordinateSpace dest_space) {
 591 #if defined(OS_MACOSX)
 592   CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
 593
 594   double flipped_screen_x = source_x;
 595   double flipped_screen_y = source_y;
 596   switch(source_space) {
 597     case NPCoordinateSpacePlugin:
 598       flipped_screen_x += plugin_origin_.x();
 599       flipped_screen_y += plugin_origin_.y();
 600       break;
 601     case NPCoordinateSpaceWindow:
 602       flipped_screen_x += containing_window_frame_.x();
 603       flipped_screen_y = containing_window_frame_.height() - source_y +
 604           containing_window_frame_.y();
 605       break;
 606     case NPCoordinateSpaceFlippedWindow:
 607       flipped_screen_x += containing_window_frame_.x();
 608       flipped_screen_y += containing_window_frame_.y();
 609       break;
 610     case NPCoordinateSpaceScreen:
 611       flipped_screen_y = main_display_bounds.size.height - flipped_screen_y;
 612       break;
 613     case NPCoordinateSpaceFlippedScreen:
 614       break;
 615     default:
 616       NOTREACHED();
 617       return false;
 618   }
 619
 620   double target_x = flipped_screen_x;
 621   double target_y = flipped_screen_y;
 622   switch(dest_space) {
 623     case NPCoordinateSpacePlugin:
 624       target_x -= plugin_origin_.x();
 625       target_y -= plugin_origin_.y();
 626       break;
 627     case NPCoordinateSpaceWindow:
 628       target_x -= containing_window_frame_.x();
 629       target_y -= containing_window_frame_.y();
 630       target_y = containing_window_frame_.height() - target_y;
 631       break;
 632     case NPCoordinateSpaceFlippedWindow:
 633       target_x -= containing_window_frame_.x();
 634       target_y -= containing_window_frame_.y();
 635       break;
 636     case NPCoordinateSpaceScreen:
 637       target_y = main_display_bounds.size.height - flipped_screen_y;
 638       break;
 639     case NPCoordinateSpaceFlippedScreen:
 640       break;
 641     default:
 642       NOTREACHED();
 643       return false;
 644   }
 645
 646   if (dest_x)
 647     *dest_x = target_x;
 648   if (dest_y)
 649     *dest_y = target_y;
 650   return true;
 651 #else
 652   NOTIMPLEMENTED();
 653   return false;
 654 #endif
 655 }
 656
 657 void PluginInstance::GetNotifyData(int notify_id,
 658                                    bool* notify,
 659                                    void** notify_data) {
 660   PendingRequestMap::iterator iter = pending_requests_.find(notify_id);
 661   if (iter != pending_requests_.end()) {
 662     *notify = true;
 663     *notify_data = iter->second;
 664     pending_requests_.erase(iter);
 665   } else {
 666     *notify = false;
 667     *notify_data = NULL;
 668   }
 669 }
 670
 671 void PluginInstance::URLRedirectResponse(bool allow, void* notify_data) {
 672   // The notify_data passed in allows us to identify the matching stream.
 673   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 674   for (stream_index = open_streams_.begin();
 675           stream_index != open_streams_.end(); ++stream_index) {
 676     PluginStream* plugin_stream = stream_index->get();
 677     if (plugin_stream->notify_data() == notify_data) {
 678       PluginStreamUrl* plugin_stream_url =
 679           static_cast<PluginStreamUrl*>(plugin_stream);
 680       plugin_stream_url->URLRedirectResponse(allow);
 681       break;
 682     }
 683   }
 684 }
 685
 686 }  // namespace content