root/content/renderer/pepper/renderer_ppapi_host_impl.cc

DEFINITIONS

1. GetForPPInstance
2. dispatcher_
3. dispatcher_
4. CreateOnModuleForOutOfProcess
5. CreateOnModuleForInProcess
6. GetForPPInstance
7. CreateInProcessResourceCreationAPI
8. GetPluginInstanceImpl
9. GetPpapiHost
10. GetRenderFrameForInstance
11. GetRenderViewForInstance
12. IsValidInstance
13. GetPluginInstance
14. GetContainerForInstance
15. GetPluginPID
16. HasUserGesture
17. GetRoutingIDForWidget
18. PluginPointToRenderFrame
19. ShareHandleWithRemote
20. IsRunningInProcess
21. CreateBrowserResourceHosts
22. GetDocumentURL
23. GetAndValidateInstance

// Copyright (c) 2012 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 "content/renderer/pepper/renderer_ppapi_host_impl.h"

#include "base/bind.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/process/process_handle.h"
#include "content/common/sandbox_util.h"
#include "content/renderer/pepper/fullscreen_container.h"
#include "content/renderer/pepper/host_globals.h"
#include "content/renderer/pepper/pepper_browser_connection.h"
#include "content/renderer/pepper/pepper_graphics_2d_host.h"
#include "content/renderer/pepper/pepper_in_process_resource_creation.h"
#include "content/renderer/pepper/pepper_in_process_router.h"
#include "content/renderer/pepper/pepper_plugin_instance_impl.h"
#include "content/renderer/pepper/plugin_module.h"
#include "content/renderer/render_view_impl.h"
#include "content/renderer/render_widget_fullscreen_pepper.h"
#include "ipc/ipc_message.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/proxy/host_dispatcher.h"
#include "third_party/WebKit/public/platform/WebRect.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebElement.h"
#include "third_party/WebKit/public/web/WebPluginContainer.h"
#include "ui/gfx/point.h"

namespace content {
// static
CONTENT_EXPORT RendererPpapiHost*
RendererPpapiHost::GetForPPInstance(PP_Instance instance) {
  return RendererPpapiHostImpl::GetForPPInstance(instance);
}

// Out-of-process constructor.
RendererPpapiHostImpl::RendererPpapiHostImpl(
    PluginModule* module,
    ppapi::proxy::HostDispatcher* dispatcher,
    const ppapi::PpapiPermissions& permissions)
    : module_(module),
      dispatcher_(dispatcher) {
  // Hook the PpapiHost up to the dispatcher for out-of-process communication.
  ppapi_host_.reset(
      new ppapi::host::PpapiHost(dispatcher, permissions));
  ppapi_host_->AddHostFactoryFilter(scoped_ptr<ppapi::host::HostFactory>(
      new ContentRendererPepperHostFactory(this)));
  dispatcher->AddFilter(ppapi_host_.get());
  is_running_in_process_ = false;
}

// In-process constructor.
RendererPpapiHostImpl::RendererPpapiHostImpl(
    PluginModule* module,
    const ppapi::PpapiPermissions& permissions)
    : module_(module),
      dispatcher_(NULL) {
  // Hook the host up to the in-process router.
  in_process_router_.reset(new PepperInProcessRouter(this));
  ppapi_host_.reset(new ppapi::host::PpapiHost(
      in_process_router_->GetRendererToPluginSender(), permissions));
  ppapi_host_->AddHostFactoryFilter(scoped_ptr<ppapi::host::HostFactory>(
      new ContentRendererPepperHostFactory(this)));
  is_running_in_process_ = true;
}

RendererPpapiHostImpl::~RendererPpapiHostImpl() {
  // Delete the host explicitly first. This shutdown will destroy the
  // resources, which may want to do cleanup in their destructors and expect
  // their pointers to us to be valid.
  ppapi_host_.reset();
}

// static
RendererPpapiHostImpl* RendererPpapiHostImpl::CreateOnModuleForOutOfProcess(
    PluginModule* module,
    ppapi::proxy::HostDispatcher* dispatcher,
    const ppapi::PpapiPermissions& permissions) {
  DCHECK(!module->renderer_ppapi_host());
  RendererPpapiHostImpl* result = new RendererPpapiHostImpl(
      module, dispatcher, permissions);

  // Takes ownership of pointer.
  module->SetRendererPpapiHost(scoped_ptr<RendererPpapiHostImpl>(result));

  return result;
}

// static
RendererPpapiHostImpl* RendererPpapiHostImpl::CreateOnModuleForInProcess(
    PluginModule* module,
    const ppapi::PpapiPermissions& permissions) {
  DCHECK(!module->renderer_ppapi_host());
  RendererPpapiHostImpl* result = new RendererPpapiHostImpl(
      module, permissions);

  // Takes ownership of pointer.
  module->SetRendererPpapiHost(scoped_ptr<RendererPpapiHostImpl>(result));

  return result;
}

// static
RendererPpapiHostImpl* RendererPpapiHostImpl::GetForPPInstance(
    PP_Instance pp_instance) {
  PepperPluginInstanceImpl* instance =
      HostGlobals::Get()->GetInstance(pp_instance);
  if (!instance)
    return NULL;

  // All modules created by content will have their embedder state be the
  // host impl.
  return instance->module()->renderer_ppapi_host();
}

scoped_ptr<ppapi::thunk::ResourceCreationAPI>
RendererPpapiHostImpl::CreateInProcessResourceCreationAPI(
    PepperPluginInstanceImpl* instance) {
  return scoped_ptr<ppapi::thunk::ResourceCreationAPI>(
      new PepperInProcessResourceCreation(this, instance));
}

PepperPluginInstanceImpl* RendererPpapiHostImpl::GetPluginInstanceImpl(
    PP_Instance instance) const {
  return GetAndValidateInstance(instance);
}

ppapi::host::PpapiHost* RendererPpapiHostImpl::GetPpapiHost() {
  return ppapi_host_.get();
}

RenderFrame* RendererPpapiHostImpl::GetRenderFrameForInstance(
    PP_Instance instance) const  {
  PepperPluginInstanceImpl* instance_object = GetAndValidateInstance(instance);
  if (!instance_object)
    return NULL;

  // Since we're the embedder, we can make assumptions about the helper on
  // the instance and get back to our RenderFrame.
  return instance_object->render_frame();
}

RenderView* RendererPpapiHostImpl::GetRenderViewForInstance(
    PP_Instance instance) const {
  PepperPluginInstanceImpl* instance_object = GetAndValidateInstance(instance);
  if (!instance_object)
    return NULL;

  // Since we're the embedder, we can make assumptions about the helper on
  // the instance and get back to our RenderView.
  return instance_object->render_frame()->render_view();
}

bool RendererPpapiHostImpl::IsValidInstance(PP_Instance instance) const {
  return !!GetAndValidateInstance(instance);
}

PepperPluginInstance* RendererPpapiHostImpl::GetPluginInstance(
    PP_Instance instance) const {
  return GetAndValidateInstance(instance);
}

blink::WebPluginContainer* RendererPpapiHostImpl::GetContainerForInstance(
      PP_Instance instance) const {
  PepperPluginInstanceImpl* instance_object = GetAndValidateInstance(instance);
  if (!instance_object)
    return NULL;
  return instance_object->container();
}

base::ProcessId RendererPpapiHostImpl::GetPluginPID() const {
  if (dispatcher_)
    return dispatcher_->channel()->peer_pid();
  return base::kNullProcessId;
}

bool RendererPpapiHostImpl::HasUserGesture(PP_Instance instance) const {
  PepperPluginInstanceImpl* instance_object = GetAndValidateInstance(instance);
  if (!instance_object)
    return false;

  if (instance_object->module()->permissions().HasPermission(
          ppapi::PERMISSION_BYPASS_USER_GESTURE))
    return true;
  return instance_object->IsProcessingUserGesture();
}

int RendererPpapiHostImpl::GetRoutingIDForWidget(PP_Instance instance) const {
  PepperPluginInstanceImpl* plugin_instance = GetAndValidateInstance(instance);
  if (!plugin_instance)
    return 0;
  if (plugin_instance->flash_fullscreen()) {
    FullscreenContainer* container = plugin_instance->fullscreen_container();
    return static_cast<RenderWidgetFullscreenPepper*>(container)->routing_id();
  }
  return GetRenderViewForInstance(instance)->GetRoutingID();
}

gfx::Point RendererPpapiHostImpl::PluginPointToRenderFrame(
    PP_Instance instance,
    const gfx::Point& pt) const {
  PepperPluginInstanceImpl* plugin_instance = GetAndValidateInstance(instance);
  if (!plugin_instance || plugin_instance->flash_fullscreen()) {
    // Flash fullscreen is special in that it renders into its own separate,
    // dedicated window.  So, do not offset the point.
    return pt;
  }
  return gfx::Point(pt.x() + plugin_instance->view_data().rect.point.x,
                    pt.y() + plugin_instance->view_data().rect.point.y);
}

IPC::PlatformFileForTransit RendererPpapiHostImpl::ShareHandleWithRemote(
    base::PlatformFile handle,
    bool should_close_source) {
  if (!dispatcher_) {
    DCHECK(is_running_in_process_);
    // Duplicate the file handle for in process mode so this function
    // has the same semantics for both in process mode and out of
    // process mode (i.e., the remote side must cloes the handle).
    return BrokerGetFileHandleForProcess(handle,
                                         base::GetCurrentProcId(),
                                         should_close_source);
  }
  return dispatcher_->ShareHandleWithRemote(handle, should_close_source);
}

bool RendererPpapiHostImpl::IsRunningInProcess() const {
  return is_running_in_process_;
}

void RendererPpapiHostImpl::CreateBrowserResourceHosts(
    PP_Instance instance,
    const std::vector<IPC::Message>& nested_msgs,
    const base::Callback<void(const std::vector<int>&)>& callback) const {
  RenderFrame* render_frame = GetRenderFrameForInstance(instance);
  PepperBrowserConnection* browser_connection =
      PepperBrowserConnection::Get(render_frame);
  if (!browser_connection) {
    base::MessageLoop::current()->PostTask(FROM_HERE,
        base::Bind(callback, std::vector<int>(nested_msgs.size(), 0)));
  } else {
    browser_connection->SendBrowserCreate(module_->GetPluginChildId(),
                                          instance,
                                          nested_msgs,
                                          callback);
  }
}

GURL RendererPpapiHostImpl::GetDocumentURL(PP_Instance instance) const {
  PepperPluginInstanceImpl* instance_object = GetAndValidateInstance(instance);
  if (!instance_object)
    return GURL();

  return instance_object->container()->element().document().url();
}

PepperPluginInstanceImpl* RendererPpapiHostImpl::GetAndValidateInstance(
    PP_Instance pp_instance) const {
  PepperPluginInstanceImpl* instance =
      HostGlobals::Get()->GetInstance(pp_instance);
  if (!instance)
    return NULL;
  if (!instance->IsValidInstanceOf(module_))
    return NULL;
  return instance;
}

}  // namespace content