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// Copyright (c) 2010 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.
// Provides wifi scan API binding for chromeos, using proprietary APIs.
#include "chrome/browser/geolocation/wifi_data_provider_chromeos.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "chrome/browser/chromeos/cros/network_library.h"
namespace {
// The time periods between successive polls of the wifi data.
const int kDefaultPollingIntervalMilliseconds = 10 * 1000; // 10s
const int kNoChangePollingIntervalMilliseconds = 2 * 60 * 1000; // 2 mins
const int kTwoNoChangePollingIntervalMilliseconds = 10 * 60 * 1000; // 10 mins
const int kNoWifiPollingIntervalMilliseconds = 20 * 1000; // 20s
}
namespace chromeos {
namespace {
// Wifi API binding to network_library.h, to allow reuse of the polling behavior
// defined in WifiDataProviderCommon.
class NetworkLibraryWlanApi : public WifiDataProviderCommon::WlanApiInterface {
public:
// Does not transfer ownership, |lib| must remain valid for lifetime of
// this object.
explicit NetworkLibraryWlanApi(NetworkLibrary* lib);
~NetworkLibraryWlanApi();
// WifiDataProviderCommon::WlanApiInterface
bool GetAccessPointData(WifiData::AccessPointDataSet* data);
private:
NetworkLibrary* network_library_;
DISALLOW_COPY_AND_ASSIGN(NetworkLibraryWlanApi);
};
NetworkLibraryWlanApi::NetworkLibraryWlanApi(NetworkLibrary* lib)
: network_library_(lib) {
DCHECK(network_library_ != NULL);
}
NetworkLibraryWlanApi::~NetworkLibraryWlanApi() {
}
bool NetworkLibraryWlanApi::GetAccessPointData(
WifiData::AccessPointDataSet* result) {
WifiAccessPointVector access_points;
if (!network_library_->GetWifiAccessPoints(&access_points))
return false;
for (WifiAccessPointVector::const_iterator i = access_points.begin();
i != access_points.end(); ++i) {
AccessPointData ap_data;
ap_data.mac_address = ASCIIToUTF16(i->mac_address);
ap_data.radio_signal_strength = i->signal_strength;
ap_data.channel = i->channel;
ap_data.signal_to_noise = i->signal_to_noise;
ap_data.ssid = UTF8ToUTF16(i->name);
result->insert(ap_data);
}
return !result->empty() || network_library_->wifi_enabled();
}
} // namespace
} // namespace chromeos
template<>
WifiDataProviderImplBase* WifiDataProvider::DefaultFactoryFunction() {
return new WifiDataProviderChromeOs();
}
WifiDataProviderChromeOs::WifiDataProviderChromeOs() {
}
WifiDataProviderChromeOs::~WifiDataProviderChromeOs() {
}
WifiDataProviderCommon::WlanApiInterface*
WifiDataProviderChromeOs::NewWlanApi(chromeos::NetworkLibrary* lib) {
return new chromeos::NetworkLibraryWlanApi(lib);
}
WifiDataProviderCommon::WlanApiInterface*
WifiDataProviderChromeOs::NewWlanApi() {
chromeos::CrosLibrary* cros_lib = chromeos::CrosLibrary::Get();
DCHECK(cros_lib);
if (!cros_lib->EnsureLoaded())
return NULL;
return NewWlanApi(cros_lib->GetNetworkLibrary());
}
PollingPolicyInterface* WifiDataProviderChromeOs::NewPollingPolicy() {
return new GenericPollingPolicy<kDefaultPollingIntervalMilliseconds,
kNoChangePollingIntervalMilliseconds,
kTwoNoChangePollingIntervalMilliseconds,
kNoWifiPollingIntervalMilliseconds>;
}
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