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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <windows.h>
#include "chrome/plugin/plugin_channel.h"
#include "chrome/common/plugin_messages.h"
#include "base/string_util.h"
#include "chrome/plugin/plugin_process.h"
#include "chrome/plugin/plugin_thread.h"
PluginChannel* PluginChannel::GetPluginChannel(
int process_id, HANDLE renderer_handle, MessageLoop* ipc_message_loop) {
// map renderer's process id to a (single) channel to that process
std::wstring channel_name = StringPrintf(
L"%d.r%d", GetCurrentProcessId(), process_id);
PluginChannelBase* result = PluginChannelBase::GetChannel(
channel_name,
IPC::Channel::MODE_SERVER,
ClassFactory,
ipc_message_loop,
false);
PluginChannel* channel = static_cast<PluginChannel*>(result);
if (channel && !channel->renderer_handle())
channel->renderer_handle_.Set(renderer_handle);
return channel;
}
PluginChannel::PluginChannel() : in_send_(0) {
SendUnblockingOnlyDuringDispatch();
PluginProcess::current()->AddRefProcess();
}
PluginChannel::~PluginChannel() {
PluginProcess::current()->ReleaseProcess();
}
bool PluginChannel::Send(IPC::Message* msg) {
in_send_++;
bool result = PluginChannelBase::Send(msg);
in_send_--;
return result;
}
void PluginChannel::OnControlMessageReceived(const IPC::Message& msg) {
IPC_BEGIN_MESSAGE_MAP(PluginChannel, msg)
IPC_MESSAGE_HANDLER(PluginMsg_CreateInstance, OnCreateInstance)
IPC_MESSAGE_HANDLER_DELAY_REPLY(PluginMsg_DestroyInstance, OnDestroyInstance)
IPC_MESSAGE_HANDLER(PluginMsg_GenerateRouteID, OnGenerateRouteID)
IPC_MESSAGE_UNHANDLED_ERROR()
IPC_END_MESSAGE_MAP()
}
void PluginChannel::OnCreateInstance(const std::string& mime_type,
int* instance_id) {
*instance_id = GenerateRouteID();
scoped_refptr<WebPluginDelegateStub> stub = new WebPluginDelegateStub(
mime_type, *instance_id, this);
AddRoute(*instance_id, stub, false);
plugin_stubs_.push_back(stub);
}
void PluginChannel::OnDestroyInstance(int instance_id,
IPC::Message* reply_msg) {
for (size_t i = 0; i < plugin_stubs_.size(); ++i) {
if (plugin_stubs_[i]->instance_id() == instance_id) {
plugin_stubs_.erase(plugin_stubs_.begin() + i);
RemoveRoute(instance_id);
Send(reply_msg);
return;
}
}
NOTREACHED() << "Couldn't find WebPluginDelegateStub to destroy";
}
void PluginChannel::OnGenerateRouteID(int* route_id) {
*route_id = GenerateRouteID();
}
int PluginChannel::GenerateRouteID() {
static LONG last_id = 0;
return InterlockedIncrement(&last_id);
}
void PluginChannel::OnChannelError() {
renderer_handle_.Set(NULL);
PluginChannelBase::OnChannelError();
CleanUp();
}
void PluginChannel::CleanUp() {
// We need to clean up the stubs so that they call NPPDestroy. This will
// also lead to them releasing their reference on this object so that it can
// be deleted.
for (size_t i = 0; i < plugin_stubs_.size(); ++i)
RemoveRoute(plugin_stubs_[i]->instance_id());
// Need to addref this object temporarily because otherwise removing the last
// stub will cause the destructor of this object to be called, however at
// that point plugin_stubs_ will have one element and its destructor will be
// called twice.
scoped_refptr<PluginChannel> me(this);
plugin_stubs_.clear();
}
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