1// Copyright (c) 2012 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/renderer/pepper/host_dispatcher_wrapper.h"
6
7#include "content/common/view_messages.h"
8#include "content/renderer/pepper/pepper_hung_plugin_filter.h"
9#include "content/renderer/pepper/pepper_plugin_instance_impl.h"
10#include "content/renderer/pepper/pepper_proxy_channel_delegate_impl.h"
11#include "content/renderer/pepper/plugin_module.h"
12#include "content/renderer/pepper/renderer_ppapi_host_impl.h"
13#include "content/renderer/pepper/renderer_restrict_dispatch_group.h"
14#include "content/renderer/render_frame_impl.h"
15
16namespace content {
17
18HostDispatcherWrapper::HostDispatcherWrapper(
19    PluginModule* module,
20    base::ProcessId peer_pid,
21    int plugin_child_id,
22    const ppapi::PpapiPermissions& perms,
23    bool is_external)
24    : module_(module),
25      peer_pid_(peer_pid),
26      plugin_child_id_(plugin_child_id),
27      permissions_(perms),
28      is_external_(is_external) {}
29
30HostDispatcherWrapper::~HostDispatcherWrapper() {}
31
32bool HostDispatcherWrapper::Init(const IPC::ChannelHandle& channel_handle,
33                                 PP_GetInterface_Func local_get_interface,
34                                 const ppapi::Preferences& preferences,
35                                 scoped_refptr<PepperHungPluginFilter> filter) {
36  if (channel_handle.name.empty())
37    return false;
38
39#if defined(OS_POSIX)
40  DCHECK_NE(-1, channel_handle.socket.fd);
41  if (channel_handle.socket.fd == -1)
42    return false;
43#endif
44
45  dispatcher_delegate_.reset(new PepperProxyChannelDelegateImpl);
46  dispatcher_.reset(new ppapi::proxy::HostDispatcher(
47      module_->pp_module(), local_get_interface, permissions_));
48  // The HungPluginFilter needs to know when we are blocked on a sync message
49  // to the plugin. Note the filter outlives the dispatcher, so there is no
50  // need to remove it as an observer.
51  dispatcher_->AddSyncMessageStatusObserver(filter.get());
52  // Guarantee the hung_plugin_filter_ outlives |dispatcher_|.
53  hung_plugin_filter_ = filter;
54
55  if (!dispatcher_->InitHostWithChannel(dispatcher_delegate_.get(),
56                                        peer_pid_,
57                                        channel_handle,
58                                        true,  // Client.
59                                        preferences)) {
60    dispatcher_.reset();
61    dispatcher_delegate_.reset();
62    return false;
63  }
64  // HungPluginFilter needs to listen for some messages on the IO thread.
65  dispatcher_->AddIOThreadMessageFilter(filter);
66
67  dispatcher_->channel()->SetRestrictDispatchChannelGroup(
68      kRendererRestrictDispatchGroup_Pepper);
69  return true;
70}
71
72const void* HostDispatcherWrapper::GetProxiedInterface(const char* name) {
73  return dispatcher_->GetProxiedInterface(name);
74}
75
76void HostDispatcherWrapper::AddInstance(PP_Instance instance) {
77  ppapi::proxy::HostDispatcher::SetForInstance(instance, dispatcher_.get());
78
79  RendererPpapiHostImpl* host =
80      RendererPpapiHostImpl::GetForPPInstance(instance);
81  // TODO(brettw) remove this null check when the old-style pepper-based
82  // browser tag is removed from this file. Getting this notification should
83  // always give us an instance we can find in the map otherwise, but that
84  // isn't true for browser tag support.
85  if (host) {
86    RenderFrame* render_frame = host->GetRenderFrameForInstance(instance);
87    PepperPluginInstance* plugin_instance = host->GetPluginInstance(instance);
88    render_frame->Send(new ViewHostMsg_DidCreateOutOfProcessPepperInstance(
89        plugin_child_id_,
90        instance,
91        PepperRendererInstanceData(
92            0,  // The render process id will be supplied in the browser.
93            render_frame->GetRoutingID(),
94            host->GetDocumentURL(instance),
95            plugin_instance->GetPluginURL()),
96        is_external_));
97  }
98}
99
100void HostDispatcherWrapper::RemoveInstance(PP_Instance instance) {
101  ppapi::proxy::HostDispatcher::RemoveForInstance(instance);
102
103  RendererPpapiHostImpl* host =
104      RendererPpapiHostImpl::GetForPPInstance(instance);
105  // TODO(brettw) remove null check as described in AddInstance.
106  if (host) {
107    RenderFrame* render_frame = host->GetRenderFrameForInstance(instance);
108    if (render_frame) {
109      render_frame->Send(new ViewHostMsg_DidDeleteOutOfProcessPepperInstance(
110          plugin_child_id_, instance, is_external_));
111    }
112  }
113}
114
115}  // namespace content
116