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| 1 // Copyright (c) 2011 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/common/npobject_proxy.h" | |
| 6 | |
| 7 #include "content/common/np_channel_base.h" | |
| 8 #include "content/common/npobject_util.h" | |
| 9 #include "content/common/plugin_messages.h" | |
| 10 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h" | |
| 11 #include "webkit/glue/webkit_glue.h" | |
| 12 #include "webkit/plugins/npapi/plugin_instance.h" | |
| 13 #include "webkit/plugins/npapi/plugin_host.h" | |
| 14 | |
| 15 using WebKit::WebBindings; | |
| 16 | |
| 17 namespace content { | |
| 18 | |
| 19 struct NPObjectWrapper { | |
| 20 NPObject object; | |
| 21 NPObjectProxy* proxy; | |
| 22 }; | |
| 23 | |
| 24 NPClass NPObjectProxy::npclass_proxy_ = { | |
| 25 NP_CLASS_STRUCT_VERSION, | |
| 26 NPObjectProxy::NPAllocate, | |
| 27 NPObjectProxy::NPDeallocate, | |
| 28 NPObjectProxy::NPPInvalidate, | |
| 29 NPObjectProxy::NPHasMethod, | |
| 30 NPObjectProxy::NPInvoke, | |
| 31 NPObjectProxy::NPInvokeDefault, | |
| 32 NPObjectProxy::NPHasProperty, | |
| 33 NPObjectProxy::NPGetProperty, | |
| 34 NPObjectProxy::NPSetProperty, | |
| 35 NPObjectProxy::NPRemoveProperty, | |
| 36 NPObjectProxy::NPNEnumerate, | |
| 37 NPObjectProxy::NPNConstruct | |
| 38 }; | |
| 39 | |
| 40 NPObjectProxy* NPObjectProxy::GetProxy(NPObject* object) { | |
| 41 NPObjectProxy* proxy = NULL; | |
| 42 | |
| 43 // Wrapper exists only for NPObjects that we had created. | |
| 44 if (&npclass_proxy_ == object->_class) { | |
| 45 NPObjectWrapper* wrapper = reinterpret_cast<NPObjectWrapper*>(object); | |
| 46 proxy = wrapper->proxy; | |
| 47 } | |
| 48 | |
| 49 return proxy; | |
| 50 } | |
| 51 | |
| 52 NPObject* NPObjectProxy::GetUnderlyingNPObject() { | |
| 53 return NULL; | |
| 54 } | |
| 55 | |
| 56 IPC::Listener* NPObjectProxy::GetChannelListener() { | |
| 57 return static_cast<IPC::Listener*>(this); | |
| 58 } | |
| 59 | |
| 60 NPObjectProxy::NPObjectProxy( | |
| 61 NPChannelBase* channel, | |
| 62 int route_id, | |
| 63 int render_view_id, | |
| 64 const GURL& page_url) | |
| 65 : channel_(channel), | |
| 66 route_id_(route_id), | |
| 67 render_view_id_(render_view_id), | |
| 68 page_url_(page_url) { | |
| 69 channel_->AddRoute(route_id, this, this); | |
| 70 } | |
| 71 | |
| 72 NPObjectProxy::~NPObjectProxy() { | |
| 73 if (channel_) { | |
| 74 // This NPObjectProxy instance is now invalid and should not be reused for | |
| 75 // requests initiated by plugins. We may receive requests for the | |
| 76 // same NPObject in the context of the outgoing NPObjectMsg_Release call. | |
| 77 // We should be creating new NPObjectProxy instances to wrap these | |
| 78 // NPObjects. | |
| 79 channel_->RemoveMappingForNPObjectProxy(route_id_); | |
| 80 channel_->RemoveRoute(route_id_); | |
| 81 Send(new NPObjectMsg_Release(route_id_)); | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 NPObject* NPObjectProxy::Create(NPChannelBase* channel, | |
| 86 int route_id, | |
| 87 int render_view_id, | |
| 88 const GURL& page_url) { | |
| 89 NPObjectWrapper* obj = reinterpret_cast<NPObjectWrapper*>( | |
| 90 WebBindings::createObject(0, &npclass_proxy_)); | |
| 91 obj->proxy = new NPObjectProxy(channel, route_id, render_view_id, page_url); | |
| 92 channel->AddMappingForNPObjectProxy(route_id, &obj->object); | |
| 93 return reinterpret_cast<NPObject*>(obj); | |
| 94 } | |
| 95 | |
| 96 bool NPObjectProxy::Send(IPC::Message* msg) { | |
| 97 if (channel_) | |
| 98 return channel_->Send(msg); | |
| 99 | |
| 100 delete msg; | |
| 101 return false; | |
| 102 } | |
| 103 | |
| 104 NPObject* NPObjectProxy::NPAllocate(NPP, NPClass*) { | |
| 105 return reinterpret_cast<NPObject*>(new NPObjectWrapper); | |
| 106 } | |
| 107 | |
| 108 void NPObjectProxy::NPDeallocate(NPObject* npObj) { | |
| 109 NPObjectWrapper* obj = reinterpret_cast<NPObjectWrapper*>(npObj); | |
| 110 delete obj->proxy; | |
| 111 delete obj; | |
| 112 } | |
| 113 | |
| 114 bool NPObjectProxy::OnMessageReceived(const IPC::Message& msg) { | |
| 115 NOTREACHED(); | |
| 116 return false; | |
| 117 } | |
| 118 | |
| 119 void NPObjectProxy::OnChannelError() { | |
| 120 // Release our ref count of the plugin channel object, as it addrefs the | |
| 121 // process. | |
| 122 channel_ = NULL; | |
| 123 } | |
| 124 | |
| 125 bool NPObjectProxy::NPHasMethod(NPObject *obj, | |
| 126 NPIdentifier name) { | |
| 127 if (obj == NULL) | |
| 128 return false; | |
| 129 | |
| 130 bool result = false; | |
| 131 NPObjectProxy* proxy = GetProxy(obj); | |
| 132 | |
| 133 if (!proxy) { | |
| 134 return obj->_class->hasMethod(obj, name); | |
| 135 } | |
| 136 | |
| 137 NPIdentifier_Param name_param; | |
| 138 CreateNPIdentifierParam(name, &name_param); | |
| 139 | |
| 140 proxy->Send(new NPObjectMsg_HasMethod(proxy->route_id(), name_param, | |
| 141 &result)); | |
| 142 return result; | |
| 143 } | |
| 144 | |
| 145 bool NPObjectProxy::NPInvoke(NPObject *obj, | |
| 146 NPIdentifier name, | |
| 147 const NPVariant *args, | |
| 148 uint32_t arg_count, | |
| 149 NPVariant *result) { | |
| 150 return NPInvokePrivate(0, obj, false, name, args, arg_count, result); | |
| 151 } | |
| 152 | |
| 153 bool NPObjectProxy::NPInvokeDefault(NPObject *npobj, | |
| 154 const NPVariant *args, | |
| 155 uint32_t arg_count, | |
| 156 NPVariant *result) { | |
| 157 return NPInvokePrivate(0, npobj, true, 0, args, arg_count, result); | |
| 158 } | |
| 159 | |
| 160 bool NPObjectProxy::NPInvokePrivate(NPP npp, | |
| 161 NPObject *obj, | |
| 162 bool is_default, | |
| 163 NPIdentifier name, | |
| 164 const NPVariant *args, | |
| 165 uint32_t arg_count, | |
| 166 NPVariant *np_result) { | |
| 167 if (obj == NULL) | |
| 168 return false; | |
| 169 | |
| 170 NPObjectProxy* proxy = GetProxy(obj); | |
| 171 if (!proxy) { | |
| 172 if (is_default) { | |
| 173 return obj->_class->invokeDefault(obj, args, arg_count, np_result); | |
| 174 } else { | |
| 175 return obj->_class->invoke(obj, name, args, arg_count, np_result); | |
| 176 } | |
| 177 } | |
| 178 | |
| 179 bool result = false; | |
| 180 int render_view_id = proxy->render_view_id_; | |
| 181 NPIdentifier_Param name_param; | |
| 182 if (is_default) { | |
| 183 // The data won't actually get used, but set it so we don't send random | |
| 184 // data. | |
| 185 name_param.identifier = NULL; | |
| 186 } else { | |
| 187 CreateNPIdentifierParam(name, &name_param); | |
| 188 } | |
| 189 | |
| 190 // Note: This instance can get destroyed in the context of | |
| 191 // Send so addref the channel in this scope. | |
| 192 scoped_refptr<NPChannelBase> channel_copy = proxy->channel_; | |
| 193 std::vector<NPVariant_Param> args_param; | |
| 194 for (unsigned int i = 0; i < arg_count; ++i) { | |
| 195 NPVariant_Param param; | |
| 196 CreateNPVariantParam( | |
| 197 args[i], channel_copy, ¶m, false, render_view_id, | |
| 198 proxy->page_url_); | |
| 199 args_param.push_back(param); | |
| 200 } | |
| 201 | |
| 202 NPVariant_Param param_result; | |
| 203 NPObjectMsg_Invoke* msg = new NPObjectMsg_Invoke( | |
| 204 proxy->route_id_, is_default, name_param, args_param, ¶m_result, | |
| 205 &result); | |
| 206 | |
| 207 // If we're in the plugin process and this invoke leads to a dialog box, the | |
| 208 // plugin will hang the window hierarchy unless we pump the window message | |
| 209 // queue while waiting for a reply. We need to do this to simulate what | |
| 210 // happens when everything runs in-process (while calling MessageBox window | |
| 211 // messages are pumped). | |
| 212 if (IsPluginProcess() && proxy->channel()) { | |
| 213 msg->set_pump_messages_event( | |
| 214 proxy->channel()->GetModalDialogEvent(render_view_id)); | |
| 215 } | |
| 216 | |
| 217 GURL page_url = proxy->page_url_; | |
| 218 proxy->Send(msg); | |
| 219 | |
| 220 // Send may delete proxy. | |
| 221 proxy = NULL; | |
| 222 | |
| 223 if (!result) | |
| 224 return false; | |
| 225 | |
| 226 CreateNPVariant( | |
| 227 param_result, channel_copy, np_result, render_view_id, page_url); | |
| 228 return true; | |
| 229 } | |
| 230 | |
| 231 bool NPObjectProxy::NPHasProperty(NPObject *obj, | |
| 232 NPIdentifier name) { | |
| 233 if (obj == NULL) | |
| 234 return false; | |
| 235 | |
| 236 bool result = false; | |
| 237 NPObjectProxy* proxy = GetProxy(obj); | |
| 238 if (!proxy) { | |
| 239 return obj->_class->hasProperty(obj, name); | |
| 240 } | |
| 241 | |
| 242 NPIdentifier_Param name_param; | |
| 243 CreateNPIdentifierParam(name, &name_param); | |
| 244 | |
| 245 NPVariant_Param param; | |
| 246 proxy->Send(new NPObjectMsg_HasProperty( | |
| 247 proxy->route_id(), name_param, &result)); | |
| 248 | |
| 249 // Send may delete proxy. | |
| 250 proxy = NULL; | |
| 251 | |
| 252 return result; | |
| 253 } | |
| 254 | |
| 255 bool NPObjectProxy::NPGetProperty(NPObject *obj, | |
| 256 NPIdentifier name, | |
| 257 NPVariant *np_result) { | |
| 258 // Please refer to http://code.google.com/p/chromium/issues/detail?id=2556, | |
| 259 // which was a crash in the XStandard plugin during plugin shutdown. The | |
| 260 // crash occured because the plugin requests the plugin script object, | |
| 261 // which fails. The plugin does not check the result of the operation and | |
| 262 // invokes NPN_GetProperty on a NULL object which lead to the crash. If | |
| 263 // we observe similar crashes in other methods in the future, these null | |
| 264 // checks may have to be replicated in the other methods in this class. | |
| 265 if (obj == NULL) | |
| 266 return false; | |
| 267 | |
| 268 NPObjectProxy* proxy = GetProxy(obj); | |
| 269 if (!proxy) { | |
| 270 return obj->_class->getProperty(obj, name, np_result); | |
| 271 } | |
| 272 | |
| 273 bool result = false; | |
| 274 int render_view_id = proxy->render_view_id_; | |
| 275 NPIdentifier_Param name_param; | |
| 276 CreateNPIdentifierParam(name, &name_param); | |
| 277 | |
| 278 NPVariant_Param param; | |
| 279 scoped_refptr<NPChannelBase> channel(proxy->channel_); | |
| 280 | |
| 281 GURL page_url = proxy->page_url_; | |
| 282 proxy->Send(new NPObjectMsg_GetProperty( | |
| 283 proxy->route_id(), name_param, ¶m, &result)); | |
| 284 // Send may delete proxy. | |
| 285 proxy = NULL; | |
| 286 if (!result) | |
| 287 return false; | |
| 288 | |
| 289 CreateNPVariant( | |
| 290 param, channel.get(), np_result, render_view_id, page_url); | |
| 291 | |
| 292 return true; | |
| 293 } | |
| 294 | |
| 295 bool NPObjectProxy::NPSetProperty(NPObject *obj, | |
| 296 NPIdentifier name, | |
| 297 const NPVariant *value) { | |
| 298 if (obj == NULL) | |
| 299 return false; | |
| 300 | |
| 301 NPObjectProxy* proxy = GetProxy(obj); | |
| 302 if (!proxy) { | |
| 303 return obj->_class->setProperty(obj, name, value); | |
| 304 } | |
| 305 | |
| 306 bool result = false; | |
| 307 int render_view_id = proxy->render_view_id_; | |
| 308 NPIdentifier_Param name_param; | |
| 309 CreateNPIdentifierParam(name, &name_param); | |
| 310 | |
| 311 NPVariant_Param value_param; | |
| 312 CreateNPVariantParam( | |
| 313 *value, proxy->channel(), &value_param, false, render_view_id, | |
| 314 proxy->page_url_); | |
| 315 | |
| 316 proxy->Send(new NPObjectMsg_SetProperty( | |
| 317 proxy->route_id(), name_param, value_param, &result)); | |
| 318 // Send may delete proxy. | |
| 319 proxy = NULL; | |
| 320 | |
| 321 return result; | |
| 322 } | |
| 323 | |
| 324 bool NPObjectProxy::NPRemoveProperty(NPObject *obj, | |
| 325 NPIdentifier name) { | |
| 326 if (obj == NULL) | |
| 327 return false; | |
| 328 | |
| 329 bool result = false; | |
| 330 NPObjectProxy* proxy = GetProxy(obj); | |
| 331 if (!proxy) { | |
| 332 return obj->_class->removeProperty(obj, name); | |
| 333 } | |
| 334 | |
| 335 NPIdentifier_Param name_param; | |
| 336 CreateNPIdentifierParam(name, &name_param); | |
| 337 | |
| 338 NPVariant_Param param; | |
| 339 proxy->Send(new NPObjectMsg_RemoveProperty( | |
| 340 proxy->route_id(), name_param, &result)); | |
| 341 // Send may delete proxy. | |
| 342 proxy = NULL; | |
| 343 | |
| 344 return result; | |
| 345 } | |
| 346 | |
| 347 void NPObjectProxy::NPPInvalidate(NPObject *obj) { | |
| 348 if (obj == NULL) | |
| 349 return; | |
| 350 | |
| 351 NPObjectProxy* proxy = GetProxy(obj); | |
| 352 if (!proxy) { | |
| 353 obj->_class->invalidate(obj); | |
| 354 return; | |
| 355 } | |
| 356 | |
| 357 proxy->Send(new NPObjectMsg_Invalidate(proxy->route_id())); | |
| 358 // Send may delete proxy. | |
| 359 proxy = NULL; | |
| 360 } | |
| 361 | |
| 362 bool NPObjectProxy::NPNEnumerate(NPObject *obj, | |
| 363 NPIdentifier **value, | |
| 364 uint32_t *count) { | |
| 365 if (obj == NULL) | |
| 366 return false; | |
| 367 | |
| 368 bool result = false; | |
| 369 NPObjectProxy* proxy = GetProxy(obj); | |
| 370 if (!proxy) { | |
| 371 if (obj->_class->structVersion >= NP_CLASS_STRUCT_VERSION_ENUM) { | |
| 372 return obj->_class->enumerate(obj, value, count); | |
| 373 } else { | |
| 374 return false; | |
| 375 } | |
| 376 } | |
| 377 | |
| 378 std::vector<NPIdentifier_Param> value_param; | |
| 379 proxy->Send(new NPObjectMsg_Enumeration( | |
| 380 proxy->route_id(), &value_param, &result)); | |
| 381 // Send may delete proxy. | |
| 382 proxy = NULL; | |
| 383 | |
| 384 if (!result) | |
| 385 return false; | |
| 386 | |
| 387 *count = static_cast<unsigned int>(value_param.size()); | |
| 388 *value = static_cast<NPIdentifier *>( | |
| 389 webkit::npapi::PluginHost::Singleton()->host_functions()->memalloc( | |
| 390 sizeof(NPIdentifier) * *count)); | |
| 391 for (unsigned int i = 0; i < *count; ++i) | |
| 392 (*value)[i] = CreateNPIdentifier(value_param[i]); | |
| 393 | |
| 394 return true; | |
| 395 } | |
| 396 | |
| 397 bool NPObjectProxy::NPNConstruct(NPObject *obj, | |
| 398 const NPVariant *args, | |
| 399 uint32_t arg_count, | |
| 400 NPVariant *np_result) { | |
| 401 if (obj == NULL) | |
| 402 return false; | |
| 403 | |
| 404 NPObjectProxy* proxy = GetProxy(obj); | |
| 405 if (!proxy) { | |
| 406 if (obj->_class->structVersion >= NP_CLASS_STRUCT_VERSION_CTOR) { | |
| 407 return obj->_class->construct(obj, args, arg_count, np_result); | |
| 408 } else { | |
| 409 return false; | |
| 410 } | |
| 411 } | |
| 412 | |
| 413 bool result = false; | |
| 414 int render_view_id = proxy->render_view_id_; | |
| 415 | |
| 416 // Note: This instance can get destroyed in the context of | |
| 417 // Send so addref the channel in this scope. | |
| 418 scoped_refptr<NPChannelBase> channel_copy = proxy->channel_; | |
| 419 std::vector<NPVariant_Param> args_param; | |
| 420 for (unsigned int i = 0; i < arg_count; ++i) { | |
| 421 NPVariant_Param param; | |
| 422 CreateNPVariantParam( | |
| 423 args[i], channel_copy, ¶m, false, render_view_id, | |
| 424 proxy->page_url_); | |
| 425 args_param.push_back(param); | |
| 426 } | |
| 427 | |
| 428 NPVariant_Param param_result; | |
| 429 NPObjectMsg_Construct* msg = new NPObjectMsg_Construct( | |
| 430 proxy->route_id_, args_param, ¶m_result, &result); | |
| 431 | |
| 432 // See comment in NPObjectProxy::NPInvokePrivate. | |
| 433 if (IsPluginProcess() && proxy->channel()) { | |
| 434 msg->set_pump_messages_event( | |
| 435 proxy->channel()->GetModalDialogEvent(proxy->render_view_id_)); | |
| 436 } | |
| 437 | |
| 438 GURL page_url = proxy->page_url_; | |
| 439 proxy->Send(msg); | |
| 440 | |
| 441 // Send may delete proxy. | |
| 442 proxy = NULL; | |
| 443 | |
| 444 if (!result) | |
| 445 return false; | |
| 446 | |
| 447 CreateNPVariant( | |
| 448 param_result, channel_copy, np_result, render_view_id, page_url); | |
| 449 return true; | |
| 450 } | |
| 451 | |
| 452 bool NPObjectProxy::NPNEvaluate(NPP npp, | |
| 453 NPObject *obj, | |
| 454 NPString *script, | |
| 455 NPVariant *result_var) { | |
| 456 NPObjectProxy* proxy = GetProxy(obj); | |
| 457 if (!proxy) { | |
| 458 return false; | |
| 459 } | |
| 460 | |
| 461 bool result = false; | |
| 462 int render_view_id = proxy->render_view_id_; | |
| 463 bool popups_allowed = false; | |
| 464 | |
| 465 if (npp) { | |
| 466 webkit::npapi::PluginInstance* plugin_instance = | |
| 467 reinterpret_cast<webkit::npapi::PluginInstance*>(npp->ndata); | |
| 468 if (plugin_instance) | |
| 469 popups_allowed = plugin_instance->popups_allowed(); | |
| 470 } | |
| 471 | |
| 472 NPVariant_Param result_param; | |
| 473 std::string script_str = std::string( | |
| 474 script->UTF8Characters, script->UTF8Length); | |
| 475 | |
| 476 NPObjectMsg_Evaluate* msg = new NPObjectMsg_Evaluate(proxy->route_id(), | |
| 477 script_str, | |
| 478 popups_allowed, | |
| 479 &result_param, | |
| 480 &result); | |
| 481 | |
| 482 // See comment in NPObjectProxy::NPInvokePrivate. | |
| 483 if (IsPluginProcess() && proxy->channel()) { | |
| 484 msg->set_pump_messages_event( | |
| 485 proxy->channel()->GetModalDialogEvent(render_view_id)); | |
| 486 } | |
| 487 scoped_refptr<NPChannelBase> channel(proxy->channel_); | |
| 488 | |
| 489 GURL page_url = proxy->page_url_; | |
| 490 proxy->Send(msg); | |
| 491 // Send may delete proxy. | |
| 492 proxy = NULL; | |
| 493 if (!result) | |
| 494 return false; | |
| 495 | |
| 496 CreateNPVariant( | |
| 497 result_param, channel.get(), result_var, render_view_id, page_url); | |
| 498 return true; | |
| 499 } | |
| 500 | |
| 501 } // namespace content | |
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Chromium Code Reviews
Issue 15047014:
Move child-common classes to content/common_child (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src