Move plugin code to content.

chrome/plugin/plugin_channel.cc

Index: chrome/plugin/plugin_channel.cc
===================================================================
--- chrome/plugin/plugin_channel.cc	(revision 78372)
+++ chrome/plugin/plugin_channel.cc	(working copy)
@@ -1,328 +0,0 @@
-// Copyright (c) 2010 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 "chrome/plugin/plugin_channel.h"
-
-#include "base/command_line.h"
-#include "base/process_util.h"
-#include "base/string_util.h"
-#include "base/synchronization/lock.h"
-#include "base/synchronization/waitable_event.h"
-#include "build/build_config.h"
-#include "chrome/plugin/plugin_thread.h"
-#include "chrome/plugin/webplugin_delegate_stub.h"
-#include "chrome/plugin/webplugin_proxy.h"
-#include "content/common/child_process.h"
-#include "content/common/content_switches.h"
-#include "content/common/plugin_messages.h"
-#include "webkit/plugins/npapi/plugin_instance.h"
-
-#if defined(OS_POSIX)
-#include "base/eintr_wrapper.h"
-#include "ipc/ipc_channel_posix.h"
-#endif
-
-namespace {
-
-class PluginReleaseTask : public Task {
- public:
-  void Run() {
-    ChildProcess::current()->ReleaseProcess();
-  }
-};
-
-// How long we wait before releasing the plugin process.
-const int kPluginReleaseTimeMs = 5 * 60 * 1000;  // 5 minutes
-
-}  // namespace
-
-// If a sync call to the renderer results in a modal dialog, we need to have a
-// way to know so that we can run a nested message loop to simulate what would
-// happen in a single process browser and avoid deadlock.
-class PluginChannel::MessageFilter : public IPC::ChannelProxy::MessageFilter {
- public:
-  MessageFilter() : channel_(NULL) { }
-  ~MessageFilter() {
-    // Clean up in case of renderer crash.
-    for (ModalDialogEventMap::iterator i = modal_dialog_event_map_.begin();
-        i != modal_dialog_event_map_.end(); ++i) {
-      delete i->second.event;
-    }
-  }
-
-  base::WaitableEvent* GetModalDialogEvent(
-      gfx::NativeViewId containing_window) {
-    base::AutoLock auto_lock(modal_dialog_event_map_lock_);
-    if (!modal_dialog_event_map_.count(containing_window)) {
-      NOTREACHED();
-      return NULL;
-    }
-
-    return modal_dialog_event_map_[containing_window].event;
-  }
-
-  // Decrement the ref count associated with the modal dialog event for the
-  // given tab.
-  void ReleaseModalDialogEvent(gfx::NativeViewId containing_window) {
-    base::AutoLock auto_lock(modal_dialog_event_map_lock_);
-    if (!modal_dialog_event_map_.count(containing_window)) {
-      NOTREACHED();
-      return;
-    }
-
-    if (--(modal_dialog_event_map_[containing_window].refcount))
-      return;
-
-    // Delete the event when the stack unwinds as it could be in use now.
-    MessageLoop::current()->DeleteSoon(
-        FROM_HERE, modal_dialog_event_map_[containing_window].event);
-    modal_dialog_event_map_.erase(containing_window);
-  }
-
-  bool Send(IPC::Message* message) {
-    // Need this function for the IPC_MESSAGE_HANDLER_DELAY_REPLY macro.
-    return channel_->Send(message);
-  }
-
- private:
-  void OnFilterAdded(IPC::Channel* channel) { channel_ = channel; }
-
-  bool OnMessageReceived(const IPC::Message& message) {
-    IPC_BEGIN_MESSAGE_MAP(PluginChannel::MessageFilter, message)
-      IPC_MESSAGE_HANDLER_DELAY_REPLY(PluginMsg_Init, OnInit)
-      IPC_MESSAGE_HANDLER(PluginMsg_SignalModalDialogEvent,
-                          OnSignalModalDialogEvent)
-      IPC_MESSAGE_HANDLER(PluginMsg_ResetModalDialogEvent,
-                          OnResetModalDialogEvent)
-    IPC_END_MESSAGE_MAP()
-    return message.type() == PluginMsg_SignalModalDialogEvent::ID ||
-           message.type() == PluginMsg_ResetModalDialogEvent::ID;
-  }
-
-  void OnInit(const PluginMsg_Init_Params& params, IPC::Message* reply_msg) {
-    base::AutoLock auto_lock(modal_dialog_event_map_lock_);
-    if (modal_dialog_event_map_.count(params.containing_window)) {
-      modal_dialog_event_map_[params.containing_window].refcount++;
-      return;
-    }
-
-    WaitableEventWrapper wrapper;
-    wrapper.event = new base::WaitableEvent(true, false);
-    wrapper.refcount = 1;
-    modal_dialog_event_map_[params.containing_window] = wrapper;
-  }
-
-  void OnSignalModalDialogEvent(gfx::NativeViewId containing_window) {
-    base::AutoLock auto_lock(modal_dialog_event_map_lock_);
-    if (modal_dialog_event_map_.count(containing_window))
-      modal_dialog_event_map_[containing_window].event->Signal();
-  }
-
-  void OnResetModalDialogEvent(gfx::NativeViewId containing_window) {
-    base::AutoLock auto_lock(modal_dialog_event_map_lock_);
-    if (modal_dialog_event_map_.count(containing_window))
-      modal_dialog_event_map_[containing_window].event->Reset();
-  }
-
-  struct WaitableEventWrapper {
-    base::WaitableEvent* event;
-    int refcount;  // There could be multiple plugin instances per tab.
-  };
-  typedef std::map<gfx::NativeViewId, WaitableEventWrapper> ModalDialogEventMap;
-  ModalDialogEventMap modal_dialog_event_map_;
-  base::Lock modal_dialog_event_map_lock_;
-
-  IPC::Channel* channel_;
-};
-
-PluginChannel* PluginChannel::GetPluginChannel(int renderer_id,
-                                               MessageLoop* ipc_message_loop) {
-  // Map renderer ID to a (single) channel to that process.
-  std::string channel_key = StringPrintf(
-      "%d.r%d", base::GetCurrentProcId(), renderer_id);
-
-  PluginChannel* channel =
-      static_cast<PluginChannel*>(PluginChannelBase::GetChannel(
-          channel_key,
-          IPC::Channel::MODE_SERVER,
-          ClassFactory,
-          ipc_message_loop,
-          false));
-
-  if (channel)
-    channel->renderer_id_ = renderer_id;
-
-  return channel;
-}
-
-// static
-void PluginChannel::NotifyRenderersOfPendingShutdown() {
-  Broadcast(new PluginHostMsg_PluginShuttingDown());
-}
-
-PluginChannel::PluginChannel()
-    : renderer_handle_(0),
-      renderer_id_(-1),
-      in_send_(0),
-      incognito_(false),
-      filter_(new MessageFilter()) {
-  set_send_unblocking_only_during_unblock_dispatch();
-  ChildProcess::current()->AddRefProcess();
-  const CommandLine* command_line = CommandLine::ForCurrentProcess();
-  log_messages_ = command_line->HasSwitch(switches::kLogPluginMessages);
-}
-
-PluginChannel::~PluginChannel() {
-  if (renderer_handle_)
-    base::CloseProcessHandle(renderer_handle_);
-
-  MessageLoop::current()->PostDelayedTask(FROM_HERE, new PluginReleaseTask(),
-                                          kPluginReleaseTimeMs);
-}
-
-bool PluginChannel::Send(IPC::Message* msg) {
-  in_send_++;
-  if (log_messages_) {
-    VLOG(1) << "sending message @" << msg << " on channel @" << this
-            << " with type " << msg->type();
-  }
-  bool result = PluginChannelBase::Send(msg);
-  in_send_--;
-  return result;
-}
-
-bool PluginChannel::OnMessageReceived(const IPC::Message& msg) {
-  if (log_messages_) {
-    VLOG(1) << "received message @" << &msg << " on channel @" << this
-            << " with type " << msg.type();
-  }
-  return PluginChannelBase::OnMessageReceived(msg);
-}
-
-bool PluginChannel::OnControlMessageReceived(const IPC::Message& msg) {
-  bool handled = true;
-  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_HANDLER(PluginMsg_ClearSiteData, OnClearSiteData)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  DCHECK(handled);
-  return handled;
-}
-
-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, NULL);
-  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) {
-      scoped_refptr<MessageFilter> filter(filter_);
-      gfx::NativeViewId window =
-          plugin_stubs_[i]->webplugin()->containing_window();
-      plugin_stubs_.erase(plugin_stubs_.begin() + i);
-      Send(reply_msg);
-      RemoveRoute(instance_id);
-      // NOTE: *this* might be deleted as a result of calling RemoveRoute.
-      // Don't release the modal dialog event right away, but do it after the
-      // stack unwinds since the plugin can be destroyed later if it's in use
-      // right now.
-      MessageLoop::current()->PostNonNestableTask(FROM_HERE, NewRunnableMethod(
-          filter.get(), &MessageFilter::ReleaseModalDialogEvent, window));
-      return;
-    }
-  }
-
-  NOTREACHED() << "Couldn't find WebPluginDelegateStub to destroy";
-}
-
-void PluginChannel::OnGenerateRouteID(int* route_id) {
-  *route_id = GenerateRouteID();
-}
-
-int PluginChannel::GenerateRouteID() {
-  static int last_id = 0;
-  return ++last_id;
-}
-
-void PluginChannel::OnClearSiteData(const std::string& site,
-                                    uint64 flags,
-                                    base::Time begin_time) {
-  bool success = false;
-  CommandLine* command_line = CommandLine::ForCurrentProcess();
-  FilePath path = command_line->GetSwitchValuePath(switches::kPluginPath);
-  scoped_refptr<webkit::npapi::PluginLib> plugin_lib(
-      webkit::npapi::PluginLib::CreatePluginLib(path));
-  if (plugin_lib.get()) {
-    NPError err = plugin_lib->NP_Initialize();
-    if (err == NPERR_NO_ERROR) {
-      const char* site_str = site.empty() ? NULL : site.c_str();
-      uint64 max_age;
-      if (begin_time > base::Time()) {
-        base::TimeDelta delta = base::Time::Now() - begin_time;
-        max_age = delta.InSeconds();
-      } else {
-        max_age = kuint64max;
-      }
-      err = plugin_lib->NP_ClearSiteData(site_str, flags, max_age);
-      success = (err == NPERR_NO_ERROR);
-    }
-  }
-  Send(new PluginHostMsg_ClearSiteDataResult(success));
-}
-
-base::WaitableEvent* PluginChannel::GetModalDialogEvent(
-    gfx::NativeViewId containing_window) {
-  return filter_->GetModalDialogEvent(containing_window);
-}
-
-void PluginChannel::OnChannelConnected(int32 peer_pid) {
-  base::ProcessHandle handle;
-  if (!base::OpenProcessHandle(peer_pid, &handle)) {
-    NOTREACHED();
-  }
-  renderer_handle_ = handle;
-  PluginChannelBase::OnChannelConnected(peer_pid);
-}
-
-void PluginChannel::OnChannelError() {
-  base::CloseProcessHandle(renderer_handle_);
-  renderer_handle_ = 0;
-  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();
-}
-
-bool PluginChannel::Init(MessageLoop* ipc_message_loop, bool create_pipe_now) {
-  if (!PluginChannelBase::Init(ipc_message_loop, create_pipe_now))
-    return false;
-
-  channel_->AddFilter(filter_.get());
-  return true;
-}
-