Simplify PPB_NetworkMonitor proxy.

content/browser/renderer_host/pepper/pepper_network_monitor_host.cc

+// Copyright 2013 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/browser/renderer_host/pepper/pepper_network_monitor_host.h"
+
+#include "base/task_runner_util.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "content/browser/renderer_host/pepper/browser_ppapi_host_impl.h"
+#include "content/browser/renderer_host/pepper/pepper_socket_utils.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/common/socket_permission_request.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/shared_impl/private/net_address_private_impl.h"
+
+namespace content {
+
+namespace {
+
+bool CanUseNetworkMonitor(bool external_plugin,
+                          int render_process_id,
+                          int render_view_id) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  SocketPermissionRequest request = SocketPermissionRequest(
+      SocketPermissionRequest::NETWORK_STATE, std::string(), 0);
+  return pepper_socket_utils::CanUseSocketAPIs(
+      external_plugin, true /* private_api */, request, render_process_id,
+      render_view_id);
+}
+
+scoped_ptr<net::NetworkInterfaceList> GetNetworkList() {
+  scoped_ptr<net::NetworkInterfaceList> list(new net::NetworkInterfaceList());
+  net::GetNetworkList(list.get());
+  return list.Pass();
+}
+
+}  // namespace
+
+PepperNetworkMonitorHost::PepperNetworkMonitorHost(
+    BrowserPpapiHostImpl* host,
+    PP_Instance instance,
+    PP_Resource resource)
+    : ResourceHost(host->GetPpapiHost(), instance, resource),
+      weak_factory_(this) {
+  int render_process_id;
+  int render_view_id;
+  host->GetRenderViewIDsForInstance(instance,
+                                    &render_process_id,
+                                    &render_view_id);
+
+  BrowserThread::PostTaskAndReplyWithResult(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(&CanUseNetworkMonitor, host->external_plugin(),
+                 render_process_id, render_view_id),
+      base::Bind(&PepperNetworkMonitorHost::OnPermissionCheckResult,
+                 weak_factory_.GetWeakPtr()));
+}
+
+PepperNetworkMonitorHost::~PepperNetworkMonitorHost() {
+  net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
+}
+
+void PepperNetworkMonitorHost::OnIPAddressChanged() {
+  GetAndSendNetworkList();
+}
+
+void PepperNetworkMonitorHost::OnPermissionCheckResult(
+    bool can_use_network_monitor) {
+  if (!can_use_network_monitor) {
+    host()->SendUnsolicitedReply(pp_resource(),
+                                 PpapiPluginMsg_NetworkMonitor_Forbidden());
+    return;
+  }
+
+  net::NetworkChangeNotifier::AddIPAddressObserver(this);
+  GetAndSendNetworkList();
+}
+
+void PepperNetworkMonitorHost::GetAndSendNetworkList() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  // Call GetNetworkList() on a thread that allows blocking IO.
+  base::PostTaskAndReplyWithResult(
+      BrowserThread::GetBlockingPool(), FROM_HERE,
+      base::Bind(&GetNetworkList),
+      base::Bind(&PepperNetworkMonitorHost::SendNetworkList,
+                 weak_factory_.GetWeakPtr()));
+}
+
+void PepperNetworkMonitorHost::SendNetworkList(
+    scoped_ptr<net::NetworkInterfaceList> list) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  scoped_ptr<ppapi::proxy::SerializedNetworkList> list_copy(
+      new ppapi::proxy::SerializedNetworkList(list->size()));
+  for (size_t i = 0; i < list->size(); ++i) {
+    const net::NetworkInterface& network = list->at(i);
+    ppapi::proxy::SerializedNetworkInfo& network_copy = list_copy->at(i);
+    network_copy.name = network.name;
+
+    network_copy.addresses.resize(
+        1, ppapi::NetAddressPrivateImpl::kInvalidNetAddress);
+    bool result = ppapi::NetAddressPrivateImpl::IPEndPointToNetAddress(
+        network.address, 0, &(network_copy.addresses[0]));
+    DCHECK(result);
+
+    // TODO(sergeyu): Currently net::NetworkInterfaceList provides
+    // only name and one IP address. Add all other fields and copy
+    // them here.
+    network_copy.type = PP_NETWORKLIST_UNKNOWN;
+    network_copy.state = PP_NETWORKLIST_UP;
+    network_copy.display_name = network.name;
+    network_copy.mtu = 0;
+  }
+  host()->SendUnsolicitedReply(
+      pp_resource(), PpapiPluginMsg_NetworkMonitor_NetworkList(*list_copy));
+}
+
+}  // namespace content