blob: 68f9c4c6f491155830d6e2a2706036b3d6c8b074 [file] [log] [blame]
// Copyright (c) 2012 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 <assert.h>
#include <stdint.h>
#include <memory>
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "device/geolocation/geolocation_export.h"
#include "device/geolocation/wifi_data_provider.h"
#include "device/geolocation/wifi_polling_policy.h"
namespace device {
// Converts a MAC address stored as an array of uint8_t to a string.
base::string16 MacAddressAsString16(const uint8_t mac_as_int[6]);
// Base class to promote code sharing between platform specific wifi data
// providers. It's optional for specific platforms to derive this, but if they
// do polling behavior is taken care of by this base class, and all the platform
// need do is provide the underlying WLAN access API and polling policy.
// Also designed this way for ease of testing the cross-platform behavior.
class DEVICE_GEOLOCATION_EXPORT WifiDataProviderCommon
: public WifiDataProvider {
// Interface to abstract the low level data OS library call, and to allow
// mocking (hence public).
class WlanApiInterface {
virtual ~WlanApiInterface() {}
// Gets wifi data for all visible access points.
virtual bool GetAccessPointData(WifiData::AccessPointDataSet* data) = 0;
// WifiDataProvider implementation
void StartDataProvider() override;
void StopDataProvider() override;
bool GetData(WifiData* data) override;
~WifiDataProviderCommon() override;
// Returns ownership.
virtual WlanApiInterface* NewWlanApi() = 0;
// Returns ownership.
virtual WifiPollingPolicy* NewPollingPolicy() = 0;
// Runs a scan. Calls the callbacks if new data is found.
void DoWifiScanTask();
// Will schedule a scan; i.e. enqueue DoWifiScanTask deferred task.
void ScheduleNextScan(int interval);
WifiData wifi_data_;
// Whether we've successfully completed a scan for WiFi data.
bool is_first_scan_complete_;
// Underlying OS wifi API.
std::unique_ptr<WlanApiInterface> wlan_api_;
// Controls the polling update interval.
std::unique_ptr<WifiPollingPolicy> polling_policy_;
// Holder for delayed tasks; takes care of cleanup.
base::WeakPtrFactory<WifiDataProviderCommon> weak_factory_;
} // namespace device