content/browser/frame_host/render_frame_proxy_host.cc

   1 // Copyright 2014 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/browser/frame_host/render_frame_proxy_host.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "content/browser/bad_message.h"
   9 #include "content/browser/frame_host/cross_process_frame_connector.h"
  10 #include "content/browser/frame_host/frame_tree.h"
  11 #include "content/browser/frame_host/frame_tree_node.h"
  12 #include "content/browser/frame_host/render_frame_host_impl.h"
  13 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
  14 #include "content/browser/renderer_host/render_view_host_impl.h"
  15 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  16 #include "content/browser/site_instance_impl.h"
  17 #include "content/common/frame_messages.h"
  18 #include "content/public/browser/browser_thread.h"
  19 #include "ipc/ipc_message.h"
  20
  21 namespace content {
  22
  23 namespace {
  24
  25 // The (process id, routing id) pair that identifies one RenderFrameProxy.
  26 typedef std::pair<int32, int32> RenderFrameProxyHostID;
  27 typedef base::hash_map<RenderFrameProxyHostID, RenderFrameProxyHost*>
  28     RoutingIDFrameProxyMap;
  29 base::LazyInstance<RoutingIDFrameProxyMap> g_routing_id_frame_proxy_map =
  30   LAZY_INSTANCE_INITIALIZER;
  31
  32 }
  33
  34 // static
  35 RenderFrameProxyHost* RenderFrameProxyHost::FromID(int process_id,
  36                                                    int routing_id) {
  37   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  38   RoutingIDFrameProxyMap* frames = g_routing_id_frame_proxy_map.Pointer();
  39   RoutingIDFrameProxyMap::iterator it = frames->find(
  40       RenderFrameProxyHostID(process_id, routing_id));
  41   return it == frames->end() ? NULL : it->second;
  42 }
  43
  44 RenderFrameProxyHost::RenderFrameProxyHost(SiteInstance* site_instance,
  45                                            FrameTreeNode* frame_tree_node)
  46     : routing_id_(site_instance->GetProcess()->GetNextRoutingID()),
  47       site_instance_(site_instance),
  48       process_(site_instance->GetProcess()),
  49       frame_tree_node_(frame_tree_node),
  50       render_frame_proxy_created_(false) {
  51   GetProcess()->AddRoute(routing_id_, this);
  52   CHECK(g_routing_id_frame_proxy_map.Get().insert(
  53       std::make_pair(
  54           RenderFrameProxyHostID(GetProcess()->GetID(), routing_id_),
  55           this)).second);
  56
  57   if (!frame_tree_node_->IsMainFrame() &&
  58       frame_tree_node_->parent()
  59               ->render_manager()
  60               ->current_frame_host()
  61               ->GetSiteInstance() == site_instance) {
  62     // The RenderFrameHost navigating cross-process is destroyed and a proxy for
  63     // it is created in the parent's process. CrossProcessFrameConnector
  64     // initialization only needs to happen on an initial cross-process
  65     // navigation, when the RenderFrameHost leaves the same process as its
  66     // parent. The same CrossProcessFrameConnector is used for subsequent cross-
  67     // process navigations, but it will be destroyed if the frame is
  68     // navigated back to the same SiteInstance as its parent.
  69     cross_process_frame_connector_.reset(new CrossProcessFrameConnector(this));
  70   }
  71 }
  72
  73 RenderFrameProxyHost::~RenderFrameProxyHost() {
  74   if (GetProcess()->HasConnection()) {
  75     // TODO(nasko): For now, don't send this IPC for top-level frames, as
  76     // the top-level RenderFrame will delete the RenderFrameProxy.
  77     // This can be removed once we don't have a swapped out state on
  78     // RenderFrame. See https://crbug.com/357747
  79     if (!frame_tree_node_->IsMainFrame())
  80       Send(new FrameMsg_DeleteProxy(routing_id_));
  81   }
  82
  83   GetProcess()->RemoveRoute(routing_id_);
  84   g_routing_id_frame_proxy_map.Get().erase(
  85       RenderFrameProxyHostID(GetProcess()->GetID(), routing_id_));
  86 }
  87
  88 void RenderFrameProxyHost::SetChildRWHView(RenderWidgetHostView* view) {
  89   cross_process_frame_connector_->set_view(
  90       static_cast<RenderWidgetHostViewChildFrame*>(view));
  91 }
  92
  93 RenderViewHostImpl* RenderFrameProxyHost::GetRenderViewHost() {
  94   return frame_tree_node_->frame_tree()->GetRenderViewHost(
  95       site_instance_.get());
  96 }
  97
  98 void RenderFrameProxyHost::TakeFrameHostOwnership(
  99     scoped_ptr<RenderFrameHostImpl> render_frame_host) {
 100   render_frame_host_ = render_frame_host.Pass();
 101   render_frame_host_->set_render_frame_proxy_host(this);
 102 }
 103
 104 scoped_ptr<RenderFrameHostImpl> RenderFrameProxyHost::PassFrameHostOwnership() {
 105   render_frame_host_->set_render_frame_proxy_host(NULL);
 106   return render_frame_host_.Pass();
 107 }
 108
 109 bool RenderFrameProxyHost::Send(IPC::Message *msg) {
 110   return GetProcess()->Send(msg);
 111 }
 112
 113 bool RenderFrameProxyHost::OnMessageReceived(const IPC::Message& msg) {
 114   if (cross_process_frame_connector_.get() &&
 115       cross_process_frame_connector_->OnMessageReceived(msg))
 116     return true;
 117
 118   bool handled = true;
 119   IPC_BEGIN_MESSAGE_MAP(RenderFrameProxyHost, msg)
 120     IPC_MESSAGE_HANDLER(FrameHostMsg_Detach, OnDetach)
 121     IPC_MESSAGE_HANDLER(FrameHostMsg_OpenURL, OnOpenURL)
 122     IPC_MESSAGE_UNHANDLED(handled = false)
 123   IPC_END_MESSAGE_MAP()
 124   return handled;
 125 }
 126
 127 bool RenderFrameProxyHost::InitRenderFrameProxy() {
 128   DCHECK(!render_frame_proxy_created_);
 129   // The process may (if we're sharing a process with another host that already
 130   // initialized it) or may not (we have our own process or the old process
 131   // crashed) have been initialized. Calling Init multiple times will be
 132   // ignored, so this is safe.
 133   if (!GetProcess()->Init())
 134     return false;
 135
 136   DCHECK(GetProcess()->HasConnection());
 137
 138   int parent_routing_id = MSG_ROUTING_NONE;
 139   if (frame_tree_node_->parent()) {
 140     parent_routing_id = frame_tree_node_->parent()
 141                             ->render_manager()
 142                             ->GetRoutingIdForSiteInstance(site_instance_.get());
 143     CHECK_NE(parent_routing_id, MSG_ROUTING_NONE);
 144   }
 145
 146   Send(new FrameMsg_NewFrameProxy(routing_id_,
 147                                   parent_routing_id,
 148                                   frame_tree_node_->frame_tree()
 149                                       ->GetRenderViewHost(site_instance_.get())
 150                                       ->GetRoutingID(),
 151                                   frame_tree_node_
 152                                       ->current_replication_state()));
 153
 154   render_frame_proxy_created_ = true;
 155   return true;
 156 }
 157
 158 void RenderFrameProxyHost::DisownOpener() {
 159   Send(new FrameMsg_DisownOpener(GetRoutingID()));
 160 }
 161
 162 void RenderFrameProxyHost::OnDetach() {
 163   // This message should only be received for subframes.  Note that we can't
 164   // restrict it to just the current SiteInstances of the ancestors of this
 165   // frame, because another frame in the tree may be able to detach this frame
 166   // by navigating its parent.
 167   if (frame_tree_node_->IsMainFrame()) {
 168     bad_message::ReceivedBadMessage(GetProcess(), bad_message::RFPH_DETACH);
 169     return;
 170   }
 171   frame_tree_node_->frame_tree()->RemoveFrame(frame_tree_node_);
 172 }
 173
 174 void RenderFrameProxyHost::OnOpenURL(
 175     const FrameHostMsg_OpenURL_Params& params) {
 176   // TODO(creis): Verify that we are in the same BrowsingInstance as the current
 177   // RenderFrameHost.  See NavigatorImpl::RequestOpenURL.
 178   frame_tree_node_->current_frame_host()->OpenURL(params, site_instance_.get());
 179 }
 180
 181 }  // namespace content