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// Copyright 2014 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 "components/metrics/net/network_metrics_provider.h"
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/task_runner_util.h"
#if defined(OS_CHROMEOS)
#include "components/metrics/net/wifi_access_point_info_provider_chromeos.h"
#endif // OS_CHROMEOS
namespace metrics {
NetworkMetricsProvider::NetworkMetricsProvider(
base::TaskRunner* io_task_runner)
: io_task_runner_(io_task_runner),
connection_type_is_ambiguous_(false),
wifi_phy_layer_protocol_is_ambiguous_(false),
wifi_phy_layer_protocol_(net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN),
weak_ptr_factory_(this) {
net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
ProbeWifiPHYLayerProtocol();
}
NetworkMetricsProvider::~NetworkMetricsProvider() {
net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
}
void NetworkMetricsProvider::OnDidCreateMetricsLog() {
net::NetworkChangeNotifier::LogOperatorCodeHistogram(
net::NetworkChangeNotifier::GetConnectionType());
}
void NetworkMetricsProvider::ProvideSystemProfileMetrics(
SystemProfileProto* system_profile) {
SystemProfileProto::Network* network = system_profile->mutable_network();
network->set_connection_type_is_ambiguous(connection_type_is_ambiguous_);
network->set_connection_type(GetConnectionType());
network->set_wifi_phy_layer_protocol_is_ambiguous(
wifi_phy_layer_protocol_is_ambiguous_);
network->set_wifi_phy_layer_protocol(GetWifiPHYLayerProtocol());
// Resets the "ambiguous" flags, since a new metrics log session has started.
connection_type_is_ambiguous_ = false;
// TODO(isherman): This line seems unnecessary.
connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
wifi_phy_layer_protocol_is_ambiguous_ = false;
if (!wifi_access_point_info_provider_.get()) {
#if defined(OS_CHROMEOS)
wifi_access_point_info_provider_.reset(
new WifiAccessPointInfoProviderChromeos());
#else
wifi_access_point_info_provider_.reset(
new WifiAccessPointInfoProvider());
#endif // OS_CHROMEOS
}
// Connected wifi access point information.
WifiAccessPointInfoProvider::WifiAccessPointInfo info;
if (wifi_access_point_info_provider_->GetInfo(&info))
WriteWifiAccessPointProto(info, network);
}
void NetworkMetricsProvider::OnConnectionTypeChanged(
net::NetworkChangeNotifier::ConnectionType type) {
if (type == net::NetworkChangeNotifier::CONNECTION_NONE)
return;
if (type != connection_type_ &&
connection_type_ != net::NetworkChangeNotifier::CONNECTION_NONE) {
connection_type_is_ambiguous_ = true;
}
connection_type_ = type;
ProbeWifiPHYLayerProtocol();
}
SystemProfileProto::Network::ConnectionType
NetworkMetricsProvider::GetConnectionType() const {
switch (connection_type_) {
case net::NetworkChangeNotifier::CONNECTION_NONE:
case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
return SystemProfileProto::Network::CONNECTION_UNKNOWN;
case net::NetworkChangeNotifier::CONNECTION_ETHERNET:
return SystemProfileProto::Network::CONNECTION_ETHERNET;
case net::NetworkChangeNotifier::CONNECTION_WIFI:
return SystemProfileProto::Network::CONNECTION_WIFI;
case net::NetworkChangeNotifier::CONNECTION_2G:
return SystemProfileProto::Network::CONNECTION_2G;
case net::NetworkChangeNotifier::CONNECTION_3G:
return SystemProfileProto::Network::CONNECTION_3G;
case net::NetworkChangeNotifier::CONNECTION_4G:
return SystemProfileProto::Network::CONNECTION_4G;
case net::NetworkChangeNotifier::CONNECTION_BLUETOOTH:
return SystemProfileProto::Network::CONNECTION_BLUETOOTH;
}
NOTREACHED();
return SystemProfileProto::Network::CONNECTION_UNKNOWN;
}
SystemProfileProto::Network::WifiPHYLayerProtocol
NetworkMetricsProvider::GetWifiPHYLayerProtocol() const {
switch (wifi_phy_layer_protocol_) {
case net::WIFI_PHY_LAYER_PROTOCOL_NONE:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_NONE;
case net::WIFI_PHY_LAYER_PROTOCOL_ANCIENT:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_ANCIENT;
case net::WIFI_PHY_LAYER_PROTOCOL_A:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_A;
case net::WIFI_PHY_LAYER_PROTOCOL_B:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_B;
case net::WIFI_PHY_LAYER_PROTOCOL_G:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_G;
case net::WIFI_PHY_LAYER_PROTOCOL_N:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_N;
case net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN:
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
}
NOTREACHED();
return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
}
void NetworkMetricsProvider::ProbeWifiPHYLayerProtocol() {
PostTaskAndReplyWithResult(
io_task_runner_,
FROM_HERE,
base::Bind(&net::GetWifiPHYLayerProtocol),
base::Bind(&NetworkMetricsProvider::OnWifiPHYLayerProtocolResult,
weak_ptr_factory_.GetWeakPtr()));
}
void NetworkMetricsProvider::OnWifiPHYLayerProtocolResult(
net::WifiPHYLayerProtocol mode) {
if (wifi_phy_layer_protocol_ != net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN &&
mode != wifi_phy_layer_protocol_) {
wifi_phy_layer_protocol_is_ambiguous_ = true;
}
wifi_phy_layer_protocol_ = mode;
}
void NetworkMetricsProvider::WriteWifiAccessPointProto(
const WifiAccessPointInfoProvider::WifiAccessPointInfo& info,
SystemProfileProto::Network* network_proto) {
SystemProfileProto::Network::WifiAccessPoint* access_point_info =
network_proto->mutable_access_point_info();
SystemProfileProto::Network::WifiAccessPoint::SecurityMode security =
SystemProfileProto::Network::WifiAccessPoint::SECURITY_UNKNOWN;
switch (info.security) {
case WifiAccessPointInfoProvider::WIFI_SECURITY_NONE:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_NONE;
break;
case WifiAccessPointInfoProvider::WIFI_SECURITY_WPA:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_WPA;
break;
case WifiAccessPointInfoProvider::WIFI_SECURITY_WEP:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_WEP;
break;
case WifiAccessPointInfoProvider::WIFI_SECURITY_RSN:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_RSN;
break;
case WifiAccessPointInfoProvider::WIFI_SECURITY_802_1X:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_802_1X;
break;
case WifiAccessPointInfoProvider::WIFI_SECURITY_PSK:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_PSK;
break;
case WifiAccessPointInfoProvider::WIFI_SECURITY_UNKNOWN:
security = SystemProfileProto::Network::WifiAccessPoint::SECURITY_UNKNOWN;
break;
}
access_point_info->set_security_mode(security);
// |bssid| is xx:xx:xx:xx:xx:xx, extract the first three components and
// pack into a uint32.
std::string bssid = info.bssid;
if (bssid.size() == 17 && bssid[2] == ':' && bssid[5] == ':' &&
bssid[8] == ':' && bssid[11] == ':' && bssid[14] == ':') {
std::string vendor_prefix_str;
uint32 vendor_prefix;
base::RemoveChars(bssid.substr(0, 9), ":", &vendor_prefix_str);
DCHECK_EQ(6U, vendor_prefix_str.size());
if (base::HexStringToUInt(vendor_prefix_str, &vendor_prefix))
access_point_info->set_vendor_prefix(vendor_prefix);
else
NOTREACHED();
}
// Return if vendor information is not provided.
if (info.model_number.empty() && info.model_name.empty() &&
info.device_name.empty() && info.oui_list.empty())
return;
SystemProfileProto::Network::WifiAccessPoint::VendorInformation* vendor =
access_point_info->mutable_vendor_info();
if (!info.model_number.empty())
vendor->set_model_number(info.model_number);
if (!info.model_name.empty())
vendor->set_model_name(info.model_name);
if (!info.device_name.empty())
vendor->set_device_name(info.device_name);
// Return if OUI list is not provided.
if (info.oui_list.empty())
return;
// Parse OUI list.
std::vector<std::string> oui_list;
base::SplitString(info.oui_list, ' ', &oui_list);
for (std::vector<std::string>::const_iterator it = oui_list.begin();
it != oui_list.end();
++it) {
uint32 oui;
if (base::HexStringToUInt(*it, &oui))
vendor->add_element_identifier(oui);
else
NOTREACHED();
}
}
} // namespace metrics
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