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      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 "remoting/client/plugin/pepper_network_manager.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/location.h"
      9 #include "base/single_thread_task_runner.h"
     10 #include "base/thread_task_runner_handle.h"
     11 #include "ppapi/cpp/module.h"
     12 #include "ppapi/cpp/net_address.h"
     13 #include "ppapi/cpp/network_list.h"
     14 #include "remoting/client/plugin/pepper_util.h"
     15 #include "third_party/libjingle/source/talk/base/socketaddress.h"
     16 
     17 namespace remoting {
     18 
     19 PepperNetworkManager::PepperNetworkManager(const pp::InstanceHandle& instance)
     20     : monitor_(instance),
     21       start_count_(0),
     22       network_list_received_(false),
     23       callback_factory_(this),
     24       weak_factory_(this) {
     25   pp::CompletionCallbackWithOutput<pp::NetworkList> callback =
     26       callback_factory_.NewCallbackWithOutput(
     27           &PepperNetworkManager::OnNetworkList);
     28   monitor_.UpdateNetworkList(callback);
     29 }
     30 
     31 PepperNetworkManager::~PepperNetworkManager() {
     32   DCHECK(!start_count_);
     33 }
     34 
     35 void PepperNetworkManager::StartUpdating() {
     36   if (network_list_received_) {
     37     // Post a task to avoid reentrancy.
     38     base::ThreadTaskRunnerHandle::Get()->PostTask(
     39         FROM_HERE, base::Bind(&PepperNetworkManager::SendNetworksChangedSignal,
     40                               weak_factory_.GetWeakPtr()));
     41   }
     42   ++start_count_;
     43 }
     44 
     45 void PepperNetworkManager::StopUpdating() {
     46   DCHECK_GT(start_count_, 0);
     47   --start_count_;
     48 }
     49 
     50 void PepperNetworkManager::OnNetworkList(int32_t result,
     51                                          const pp::NetworkList& list) {
     52   if (result != PP_OK) {
     53     SignalError();
     54     return;
     55   }
     56   DCHECK(!list.is_null());
     57 
     58   network_list_received_ = true;
     59 
     60   // Request for the next update.
     61   pp::CompletionCallbackWithOutput<pp::NetworkList> callback =
     62       callback_factory_.NewCallbackWithOutput(
     63           &PepperNetworkManager::OnNetworkList);
     64   monitor_.UpdateNetworkList(callback);
     65 
     66   // Convert the networks to talk_base::Network.
     67   std::vector<talk_base::Network*> networks;
     68   size_t count = list.GetCount();
     69   for (size_t i = 0; i < count; i++) {
     70     std::vector<pp::NetAddress> addresses;
     71     list.GetIpAddresses(i, &addresses);
     72 
     73     if (addresses.size() == 0)
     74       continue;
     75 
     76     for (size_t i = 0; i < addresses.size(); ++i) {
     77       talk_base::SocketAddress address;
     78       PpNetAddressToSocketAddress(addresses[i], &address);
     79 
     80       if (address.family() == AF_INET6 && IPIsSiteLocal(address.ipaddr())) {
     81         // Link-local IPv6 addresses can't be bound via the current PPAPI
     82         // Bind() interface as designed (see crbug.com/384854); trying to do so
     83         // would fail.
     84         continue;
     85       }
     86 
     87       talk_base::Network* network = new talk_base::Network(
     88           list.GetName(i), list.GetDisplayName(i), address.ipaddr(), 0);
     89       network->AddIP(address.ipaddr());
     90       networks.push_back(network);
     91     }
     92   }
     93 
     94   bool changed = false;
     95   MergeNetworkList(networks, &changed);
     96   if (changed)
     97     SignalNetworksChanged();
     98 }
     99 
    100 void PepperNetworkManager::SendNetworksChangedSignal() {
    101   SignalNetworksChanged();
    102 }
    103 
    104 }  // namespace remoting
    105