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
NetworkMetricsProvider(base::TaskRunner * io_task_runner)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
~NetworkMetricsProvider()34 NetworkMetricsProvider::~NetworkMetricsProvider() {
35 net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
36 }
37
OnDidCreateMetricsLog()38 void NetworkMetricsProvider::OnDidCreateMetricsLog() {
39 net::NetworkChangeNotifier::LogOperatorCodeHistogram(
40 net::NetworkChangeNotifier::GetConnectionType());
41 }
42
ProvideSystemProfileMetrics(SystemProfileProto * system_profile)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
OnConnectionTypeChanged(net::NetworkChangeNotifier::ConnectionType type)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
GetConnectionType() const88 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
GetWifiPHYLayerProtocol() const111 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
ProbeWifiPHYLayerProtocol()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
OnWifiPHYLayerProtocolResult(net::WifiPHYLayerProtocol mode)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
WriteWifiAccessPointProto(const WifiAccessPointInfoProvider::WifiAccessPointInfo & info,SystemProfileProto::Network * network_proto)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 }
229