15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/ppp_messaging_proxy.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <algorithm> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/ppp_messaging.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/host_dispatcher.h" 11f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#include "ppapi/proxy/message_handler.h" 12f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#include "ppapi/proxy/plugin_dispatcher.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/plugin_resource_tracker.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/plugin_var_tracker.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/ppapi_messages.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/serialized_var.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/ppapi_globals.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/proxy_lock.h" 19f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#include "ppapi/shared_impl/scoped_pp_var.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/var_tracker.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ppapi { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace proxy { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)namespace { 26f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 27f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)MessageHandler* GetMessageHandler(Dispatcher* dispatcher, 28f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) PP_Instance instance) { 29f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (!dispatcher || !dispatcher->IsPlugin()) { 30f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) NOTREACHED(); 31f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return NULL; 32f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } 33f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) PluginDispatcher* plugin_dispatcher = 34f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) static_cast<PluginDispatcher*>(dispatcher); 35f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) InstanceData* instance_data = plugin_dispatcher->GetInstanceData(instance); 36f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (!instance_data) 37f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return NULL; 38f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 39f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return instance_data->message_handler.get(); 40f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)} 41f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 42f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)void ResetMessageHandler(Dispatcher* dispatcher, PP_Instance instance) { 43f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (!dispatcher || !dispatcher->IsPlugin()) { 44f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) NOTREACHED(); 45f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return; 46f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } 47f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) PluginDispatcher* plugin_dispatcher = 48f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) static_cast<PluginDispatcher*>(dispatcher); 49f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) InstanceData* instance_data = plugin_dispatcher->GetInstanceData(instance); 50f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (!instance_data) 51f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return; 52f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 53f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) instance_data->message_handler.reset(); 54f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)} 55f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 56f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)} // namespace 57f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPP_Messaging_Proxy::PPP_Messaging_Proxy(Dispatcher* dispatcher) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : InterfaceProxy(dispatcher), 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppp_messaging_impl_(NULL) { 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (dispatcher->IsPlugin()) { 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppp_messaging_impl_ = static_cast<const PPP_Messaging*>( 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher->local_get_interface()(PPP_MESSAGING_INTERFACE)); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPP_Messaging_Proxy::~PPP_Messaging_Proxy() { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PPP_Messaging_Proxy::OnMessageReceived(const IPC::Message& msg) { 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!dispatcher()->IsPlugin()) 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return false; 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handled = true; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(PPP_Messaging_Proxy, msg) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(PpapiMsg_PPPMessaging_HandleMessage, 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnMsgHandleMessage) 78f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) IPC_MESSAGE_HANDLER_DELAY_REPLY( 79f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) PpapiMsg_PPPMessageHandler_HandleBlockingMessage, 80f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) OnMsgHandleBlockingMessage) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_UNHANDLED(handled = false) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_END_MESSAGE_MAP() 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return handled; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PPP_Messaging_Proxy::OnMsgHandleMessage( 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Instance instance, SerializedVarReceiveInput message_data) { 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_Var received_var(message_data.GetForInstance(dispatcher(), instance)); 89f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) MessageHandler* message_handler = GetMessageHandler(dispatcher(), instance); 90f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (message_handler) { 91f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (message_handler->LoopIsValid()) { 92f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) message_handler->HandleMessage(ScopedPPVar(received_var)); 93f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return; 94f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } else { 95f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // If the MessageHandler's loop has been quit, then we should treat it as 96f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // though it has been unregistered and start sending messages to the 97f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // default handler. This might mean the plugin has lost messages, but 98f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // there's not really anything sane we can do about it. They should have 99f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // used UnregisterMessageHandler. 100f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) ResetMessageHandler(dispatcher(), instance); 101f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } 102f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } 103f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // If we reach this point, then there's no message handler registered, so 104f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // we send to the default PPP_Messaging one for the instance. 105f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // SerializedVarReceiveInput will decrement the reference count, but we want 107f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // to give the recipient a reference in the legacy API. 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PpapiGlobals::Get()->GetVarTracker()->AddRefVar(received_var); 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CallWhileUnlocked(ppp_messaging_impl_->HandleMessage, 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) instance, 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) received_var); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 114f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)void PPP_Messaging_Proxy::OnMsgHandleBlockingMessage( 115f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) PP_Instance instance, 116f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) SerializedVarReceiveInput message_data, 117f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) IPC::Message* reply_msg) { 118f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) ScopedPPVar received_var(message_data.GetForInstance(dispatcher(), instance)); 119f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) MessageHandler* message_handler = GetMessageHandler(dispatcher(), instance); 120f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (message_handler) { 121f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (message_handler->LoopIsValid()) { 122f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) message_handler->HandleBlockingMessage( 123f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) received_var, scoped_ptr<IPC::Message>(reply_msg)); 124f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return; 125f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } else { 126f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // If the MessageHandler's loop has been quit, then we should treat it as 127f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // though it has been unregistered. Also see the note for PostMessage. 128f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) ResetMessageHandler(dispatcher(), instance); 129f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } 130f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) } 131f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // We have no handler, but we still need to respond to unblock the renderer 132f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // and inform the JavaScript caller. 133f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) PpapiMsg_PPPMessageHandler_HandleBlockingMessage::WriteReplyParams( 134f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) reply_msg, 135f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) SerializedVarReturnValue::Convert(dispatcher(), PP_MakeUndefined()), 136f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) false /* was_handled */); 137f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) dispatcher()->Send(reply_msg); 138f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)} 139f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 140f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace proxy 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ppapi 143