src/components/metrics/net/network_metrics_provider.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 "components/metrics/net/network_metrics_provider.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/strings/string_split.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/task_runner_util.h"
  15
  16 #if defined(OS_CHROMEOS)
  17 #include "components/metrics/net/wifi_access_point_info_provider_chromeos.h"
  18 #endif // OS_CHROMEOS
  19
  20 using metrics::SystemProfileProto;
  21
  22 NetworkMetricsProvider::NetworkMetricsProvider(
  23     base::TaskRunner* io_task_runner)
  24     : io_task_runner_(io_task_runner),
  25       connection_type_is_ambiguous_(false),
  26       wifi_phy_layer_protocol_is_ambiguous_(false),
  27       wifi_phy_layer_protocol_(net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN),
  28       weak_ptr_factory_(this) {
  29   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
  30   connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
  31   ProbeWifiPHYLayerProtocol();
  32 }
  33
  34 NetworkMetricsProvider::~NetworkMetricsProvider() {
  35   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
  36 }
  37
  38 void NetworkMetricsProvider::OnDidCreateMetricsLog() {
  39   net::NetworkChangeNotifier::LogOperatorCodeHistogram(
  40       net::NetworkChangeNotifier::GetConnectionType());
  41 }
  42
  43 void NetworkMetricsProvider::ProvideSystemProfileMetrics(
  44     SystemProfileProto* system_profile) {
  45   SystemProfileProto::Network* network = system_profile->mutable_network();
  46   network->set_connection_type_is_ambiguous(connection_type_is_ambiguous_);
  47   network->set_connection_type(GetConnectionType());
  48   network->set_wifi_phy_layer_protocol_is_ambiguous(
  49       wifi_phy_layer_protocol_is_ambiguous_);
  50   network->set_wifi_phy_layer_protocol(GetWifiPHYLayerProtocol());
  51
  52   // Resets the "ambiguous" flags, since a new metrics log session has started.
  53   connection_type_is_ambiguous_ = false;
  54   // TODO(isherman): This line seems unnecessary.
  55   connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
  56   wifi_phy_layer_protocol_is_ambiguous_ = false;
  57
  58   if (!wifi_access_point_info_provider_.get()) {
  59 #if defined(OS_CHROMEOS)
  60     wifi_access_point_info_provider_.reset(
  61         new WifiAccessPointInfoProviderChromeos());
  62 #else
  63     wifi_access_point_info_provider_.reset(
  64         new WifiAccessPointInfoProvider());
  65 #endif // OS_CHROMEOS
  66   }
  67
  68   // Connected wifi access point information.
  69   WifiAccessPointInfoProvider::WifiAccessPointInfo info;
  70   if (wifi_access_point_info_provider_->GetInfo(&info))
  71     WriteWifiAccessPointProto(info, network);
  72 }
  73
  74 void NetworkMetricsProvider::OnConnectionTypeChanged(
  75     net::NetworkChangeNotifier::ConnectionType type) {
  76   if (type == net::NetworkChangeNotifier::CONNECTION_NONE)
  77     return;
  78   if (type != connection_type_ &&
  79       connection_type_ != net::NetworkChangeNotifier::CONNECTION_NONE) {
  80     connection_type_is_ambiguous_ = true;
  81   }
  82   connection_type_ = type;
  83
  84   ProbeWifiPHYLayerProtocol();
  85 }
  86
  87 SystemProfileProto::Network::ConnectionType
  88 NetworkMetricsProvider::GetConnectionType() const {
  89   switch (connection_type_) {
  90     case net::NetworkChangeNotifier::CONNECTION_NONE:
  91     case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
  92       return SystemProfileProto::Network::CONNECTION_UNKNOWN;
  93     case net::NetworkChangeNotifier::CONNECTION_ETHERNET:
  94       return SystemProfileProto::Network::CONNECTION_ETHERNET;
  95     case net::NetworkChangeNotifier::CONNECTION_WIFI:
  96       return SystemProfileProto::Network::CONNECTION_WIFI;
  97     case net::NetworkChangeNotifier::CONNECTION_2G:
  98       return SystemProfileProto::Network::CONNECTION_2G;
  99     case net::NetworkChangeNotifier::CONNECTION_3G:
 100       return SystemProfileProto::Network::CONNECTION_3G;
 101     case net::NetworkChangeNotifier::CONNECTION_4G:
 102       return SystemProfileProto::Network::CONNECTION_4G;
 103     case net::NetworkChangeNotifier::CONNECTION_BLUETOOTH:
 104       return SystemProfileProto::Network::CONNECTION_BLUETOOTH;
 105   }
 106   NOTREACHED();
 107   return SystemProfileProto::Network::CONNECTION_UNKNOWN;
 108 }
 109
 110 SystemProfileProto::Network::WifiPHYLayerProtocol
 111 NetworkMetricsProvider::GetWifiPHYLayerProtocol() const {
 112   switch (wifi_phy_layer_protocol_) {
 113     case net::WIFI_PHY_LAYER_PROTOCOL_NONE:
 114       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_NONE;
 115     case net::WIFI_PHY_LAYER_PROTOCOL_ANCIENT:
 116       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_ANCIENT;
 117     case net::WIFI_PHY_LAYER_PROTOCOL_A:
 118       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_A;
 119     case net::WIFI_PHY_LAYER_PROTOCOL_B:
 120       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_B;
 121     case net::WIFI_PHY_LAYER_PROTOCOL_G:
 122       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_G;
 123     case net::WIFI_PHY_LAYER_PROTOCOL_N:
 124       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_N;
 125     case net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN:
 126       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
 127   }
 128   NOTREACHED();
 129   return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
 130 }
 131
 132 void NetworkMetricsProvider::ProbeWifiPHYLayerProtocol() {
 133   PostTaskAndReplyWithResult(
 134       io_task_runner_,
 135       FROM_HERE,
 136       base::Bind(&net::GetWifiPHYLayerProtocol),
 137       base::Bind(&NetworkMetricsProvider::OnWifiPHYLayerProtocolResult,
 138                  weak_ptr_factory_.GetWeakPtr()));
 139 }
 140
 141 void NetworkMetricsProvider::OnWifiPHYLayerProtocolResult(
 142     net::WifiPHYLayerProtocol mode) {
 143   if (wifi_phy_layer_protocol_ != net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN &&
 144       mode != wifi_phy_layer_protocol_) {
 145     wifi_phy_layer_protocol_is_ambiguous_ = true;
 146   }
 147   wifi_phy_layer_protocol_ = mode;
 148 }
 149
 150 void NetworkMetricsProvider::WriteWifiAccessPointProto(
 151     const WifiAccessPointInfoProvider::WifiAccessPointInfo& info,
 152     SystemProfileProto::Network* network_proto) {
 153   SystemProfileProto::Network::WifiAccessPoint* access_point_info =
 154       network_proto->mutable_access_point_info();
 155   SystemProfileProto::Network::WifiAccessPoint::SecurityMode security =
 156       SystemProfileProto::Network::WifiAccessPoint::SECURITY_UNKNOWN;
 157   switch (info.security) {
 158     case WifiAccessPointInfoProvider::WIFI_SECURITY_NONE:
 159       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_NONE;
 160       break;
 161     case WifiAccessPointInfoProvider::WIFI_SECURITY_WPA:
 162       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_WPA;
 163       break;
 164     case WifiAccessPointInfoProvider::WIFI_SECURITY_WEP:
 165       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_WEP;
 166       break;
 167     case WifiAccessPointInfoProvider::WIFI_SECURITY_RSN:
 168       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_RSN;
 169       break;
 170     case WifiAccessPointInfoProvider::WIFI_SECURITY_802_1X:
 171       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_802_1X;
 172       break;
 173     case WifiAccessPointInfoProvider::WIFI_SECURITY_PSK:
 174       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_PSK;
 175       break;
 176     case WifiAccessPointInfoProvider::WIFI_SECURITY_UNKNOWN:
 177       security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_UNKNOWN;
 178       break;
 179   }
 180   access_point_info->set_security_mode(security);
 181
 182   // |bssid| is xx:xx:xx:xx:xx:xx, extract the first three components and
 183   // pack into a uint32.
 184   std::string bssid = info.bssid;
 185   if (bssid.size() == 17 && bssid[2] == ':' && bssid[5] == ':' &&
 186       bssid[8] == ':' && bssid[11] == ':' && bssid[14] == ':') {
 187     std::string vendor_prefix_str;
 188     uint32 vendor_prefix;
 189
 190     base::RemoveChars(bssid.substr(0, 9), ":", &vendor_prefix_str);
 191     DCHECK_EQ(6U, vendor_prefix_str.size());
 192     if (base::HexStringToUInt(vendor_prefix_str, &vendor_prefix))
 193       access_point_info->set_vendor_prefix(vendor_prefix);
 194     else
 195       NOTREACHED();
 196   }
 197
 198   // Return if vendor information is not provided.
 199   if (info.model_number.empty() && info.model_name.empty() &&
 200       info.device_name.empty() && info.oui_list.empty())
 201     return;
 202
 203   SystemProfileProto::Network::WifiAccessPoint::VendorInformation* vendor =
 204       access_point_info->mutable_vendor_info();
 205   if (!info.model_number.empty())
 206     vendor->set_model_number(info.model_number);
 207   if (!info.model_name.empty())
 208     vendor->set_model_name(info.model_name);
 209   if (!info.device_name.empty())
 210     vendor->set_device_name(info.device_name);
 211
 212   // Return if OUI list is not provided.
 213   if (info.oui_list.empty())
 214     return;
 215
 216   // Parse OUI list.
 217   std::vector<std::string> oui_list;
 218   base::SplitString(info.oui_list, ' ', &oui_list);
 219   for (std::vector<std::string>::const_iterator it = oui_list.begin();
 220        it != oui_list.end();
 221        ++it) {
 222     uint32 oui;
 223     if (base::HexStringToUInt(*it, &oui))
 224       vendor->add_element_identifier(oui);
 225     else
 226       NOTREACHED();
 227   }
 228 }