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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/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
}
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* data) {
const WifiNetworkVector& networks = network_library_->wifi_networks();
for (WifiNetworkVector::const_iterator i = networks.begin();
i != networks.end(); ++i) {
for (WifiNetwork::AccessPointVector::const_iterator j =
i->access_points().begin(); j != i->access_points().end(); ++j) {
AccessPointData ap_data;
ap_data.mac_address = ASCIIToUTF16(j->mac_address);
ap_data.radio_signal_strength = j->signal_strength;
ap_data.channel = j->channel;
ap_data.signal_to_noise = j->signal_to_noise;
ap_data.ssid = UTF8ToUTF16(i->name());
data->insert(ap_data);
}
}
return !data->empty() || network_library_->wifi_available();
}
} // 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() {
if (network_library_ == NULL) {
network_library_.reset(new chromeos::NetworkLibraryImpl());
// TODO(joth): Check net_lib loaded ok, if not return NULL.
}
return NewWlanApi(network_library_.get());
}
PollingPolicyInterface* WifiDataProviderChromeOs::NewPollingPolicy() {
return new GenericPollingPolicy<kDefaultPollingIntervalMilliseconds,
kNoChangePollingIntervalMilliseconds,
kTwoNoChangePollingIntervalMilliseconds>;
}
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