src/platform/ASR/NetworkCommissioningWiFiDriver.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2021 Project CHIP Authors
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
  *    You may obtain a copy of the License at
  *
  *        http://www.apache.org/licenses/LICENSE-2.0
  *
  *    Unless required by applicable law or agreed to in writing, software
  *    distributed under the License is distributed on an "AS IS" BASIS,
  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */

 #include "lega_wlan_api.h"
 #include <lib/support/CodeUtils.h>
 #include <lib/support/SafeInt.h>
 #include <limits>
 #include <platform/ASR/ASRConfig.h>
 #include <platform/ASR/ASRUtils.h>
 #include <platform/ASR/NetworkCommissioningDriver.h>
 #include <platform/CHIPDeviceLayer.h>
 #include <string>

 using namespace ::chip;
 using namespace ::chip::DeviceLayer::Internal;

 namespace chip {
 namespace DeviceLayer {
 namespace NetworkCommissioning {

 CHIP_ERROR ASRWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
 {
     CHIP_ERROR err;
     mpScanCallback         = nullptr;
     mpConnectCallback      = nullptr;
     mpStatusChangeCallback = networkStatusChangeCallback;

     lega_wlan_wifi_conf config = { 0 };
     err                        = chip::DeviceLayer::Internal::ASRUtils::asr_wifi_get_config(&config);

     if (err == CHIP_ERROR_KEY_NOT_FOUND)
     {
         return CHIP_NO_ERROR;
     }

     memcpy(mSavedNetwork.ssid, config.wifi_ssid, config.ssid_len + 1);
     memcpy(mSavedNetwork.credentials, config.wifi_key, config.key_len + 1);
     mSavedNetwork.ssidLen        = config.ssid_len;
     mSavedNetwork.credentialsLen = config.key_len;

     mStagingNetwork = mSavedNetwork;

     return err;
 }

 void ASRWiFiDriver::Shutdown()
 {
     mpStatusChangeCallback = nullptr;
 }

 CHIP_ERROR ASRWiFiDriver::CommitConfiguration()
 {
     lega_wlan_wifi_conf config = { 0 };
     memcpy(config.wifi_ssid, mStagingNetwork.ssid, mStagingNetwork.ssidLen);
     memcpy(config.wifi_key, mStagingNetwork.credentials, mStagingNetwork.credentialsLen);
     config.ssid_len = mStagingNetwork.ssidLen;
     config.key_len  = mStagingNetwork.credentialsLen;

     ReturnErrorOnFailure(chip::DeviceLayer::Internal::ASRUtils::asr_wifi_set_config(&config));

     mSavedNetwork = mStagingNetwork;
     return CHIP_NO_ERROR;
 }

 CHIP_ERROR ASRWiFiDriver::RevertConfiguration()
 {
     mStagingNetwork = mSavedNetwork;
     return CHIP_NO_ERROR;
 }

 bool ASRWiFiDriver::NetworkMatch(const WiFiNetwork & network, ByteSpan networkId)
 {
     return networkId.size() == network.ssidLen && memcmp(networkId.data(), network.ssid, network.ssidLen) == 0;
 }

 Status ASRWiFiDriver::AddOrUpdateNetwork(ByteSpan ssid, ByteSpan credentials, MutableCharSpan & outDebugText,
                                          uint8_t & outNetworkIndex)
 {
     outDebugText.reduce_size(0);
     outNetworkIndex = 0;
     VerifyOrReturnError(mStagingNetwork.ssidLen == 0 || NetworkMatch(mStagingNetwork, ssid), Status::kBoundsExceeded);
     VerifyOrReturnError(credentials.size() <= sizeof(mStagingNetwork.credentials), Status::kOutOfRange);
     VerifyOrReturnError(ssid.size() <= sizeof(mStagingNetwork.ssid), Status::kOutOfRange);

     memset(mStagingNetwork.credentials, 0, sizeof(mStagingNetwork.credentials));
     memcpy(mStagingNetwork.credentials, credentials.data(), credentials.size());
     mStagingNetwork.credentialsLen = static_cast<decltype(mStagingNetwork.credentialsLen)>(credentials.size());

     memset(mStagingNetwork.ssid, 0, sizeof(mStagingNetwork.ssid));
     memcpy(mStagingNetwork.ssid, ssid.data(), ssid.size());
     mStagingNetwork.ssidLen = static_cast<decltype(mStagingNetwork.ssidLen)>(ssid.size());

     return Status::kSuccess;
 }

 Status ASRWiFiDriver::RemoveNetwork(ByteSpan networkId, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
 {
     outDebugText.reduce_size(0);
     outNetworkIndex = 0;
     VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);

     // Use empty ssid for representing invalid network
     mStagingNetwork.ssidLen = 0;
     return Status::kSuccess;
 }

 Status ASRWiFiDriver::ReorderNetwork(ByteSpan networkId, uint8_t index, MutableCharSpan & outDebugText)
 {
     outDebugText.reduce_size(0);
     // Only one network is supported now
     VerifyOrReturnError(index == 0, Status::kOutOfRange);
     VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);
     return Status::kSuccess;
 }

 CHIP_ERROR ASRWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
     // Set the wifi configuration
     lega_wlan_wifi_conf wifiConfig;

     // Set the wifi configuration
     memset(&wifiConfig, 0, sizeof(wifiConfig));
     memcpy(wifiConfig.wifi_ssid, ssid, ssidLen);
     memcpy(wifiConfig.wifi_key, key, keyLen);
     wifiConfig.ssid_len = ssidLen;
     wifiConfig.key_len  = keyLen;

     err = chip::DeviceLayer::Internal::ASRUtils::asr_wifi_set_config(&wifiConfig);
     SuccessOrExit(err);

     ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
     err = ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Enabled);

 exit:
     return err;
 }

 void ASRWiFiDriver::OnConnectWiFiNetwork()
 {
     if (mpConnectCallback)
     {
         CommitConfiguration();
         mpConnectCallback->OnResult(Status::kSuccess, CharSpan(), 0);
         mpConnectCallback = nullptr;
     }
 }

 void ASRWiFiDriver::ConnectNetwork(ByteSpan networkId, ConnectCallback * callback)
 {
     CHIP_ERROR err          = CHIP_NO_ERROR;
     Status networkingStatus = Status::kSuccess;

     VerifyOrExit(NetworkMatch(mStagingNetwork, networkId), networkingStatus = Status::kNetworkIDNotFound);
     VerifyOrExit(mpConnectCallback == nullptr, networkingStatus = Status::kUnknownError);
     ChipLogProgress(NetworkProvisioning, "ASR NetworkCommissioningDelegate: SSID: %s", StringOrNullMarker(mStagingNetwork.ssid));
     err               = ConnectWiFiNetwork(reinterpret_cast<const char *>(mStagingNetwork.ssid), mStagingNetwork.ssidLen,
                              reinterpret_cast<const char *>(mStagingNetwork.credentials), mStagingNetwork.credentialsLen);
     mpConnectCallback = callback;
 exit:
     if (err != CHIP_NO_ERROR)
     {
         networkingStatus = Status::kUnknownError;
     }
     if (networkingStatus != Status::kSuccess)
     {
         ChipLogError(NetworkProvisioning, "Failed to connect to WiFi network:%s", chip::ErrorStr(err));
         mpConnectCallback = nullptr;
         callback->OnResult(networkingStatus, CharSpan(), 0);
     }
 }

 CHIP_ERROR ASRWiFiDriver::StartScanWiFiNetworks(ByteSpan ssid)
 {
     if (ASRUtils::EnableStationMode() != CHIP_NO_ERROR)
     {
         ChipLogProgress(DeviceLayer, "Start Scan WiFi Networks Failed");
         return CHIP_ERROR_INTERNAL;
     }

     if (!ssid.empty()) // ssid is given, only scan this network
     {
         char cSsid[DeviceLayer::Internal::kMaxWiFiSSIDLength] = {};
         memcpy(cSsid, ssid.data(), ssid.size());
         lega_wlan_start_scan_active(cSsid, 0);
     }
     else // scan all networks
     {
         lega_wlan_start_scan();
     }
     return CHIP_NO_ERROR;
 }

 void ASRWiFiDriver::OnScanWiFiNetworkDone(lega_wlan_scan_result_t * ScanResult)
 {
     uint8_t ap_num = ScanResult->ap_num;
     if (!ap_num)
     {
         ChipLogProgress(DeviceLayer, "No AP found");
         if (mpScanCallback != nullptr)
         {
             mpScanCallback->OnFinished(Status::kSuccess, CharSpan(), nullptr);
             mpScanCallback = nullptr;
         }
         return;
     }

     if (ScanResult)
     {
         if (CHIP_NO_ERROR == DeviceLayer::SystemLayer().ScheduleLambda([ap_num, ScanResult]() {
                 ASRScanResponseIterator iter(ap_num, ScanResult);
                 if (GetInstance().mpScanCallback)
                 {
                     GetInstance().mpScanCallback->OnFinished(Status::kSuccess, CharSpan(), &iter);
                     GetInstance().mpScanCallback = nullptr;
                 }
                 else
                 {
                     ChipLogError(DeviceLayer, "can't find the ScanCallback function");
                 }
             }))
         {
             ChipLogProgress(DeviceLayer, "ScheduleLambda OK");
         }
     }
     else
     {
         ChipLogError(DeviceLayer, "can't get ap_records ");
         if (mpScanCallback)
         {
             mpScanCallback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
             mpScanCallback = nullptr;
         }
     }
 }

 void ASRWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
 {
     if (callback != nullptr)
     {
         mpScanCallback = callback;
         if (StartScanWiFiNetworks(ssid) != CHIP_NO_ERROR)
         {
             mpScanCallback = nullptr;
             callback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
         }
     }
 }

 CHIP_ERROR GetConnectedNetwork(Network & network)
 {
     lega_wlan_ap_info_adv_t * apinfo = lega_wlan_get_associated_apinfo();

     if ((apinfo == NULL) || (apinfo->ssid[0] == 0))
     {
         return CHIP_ERROR_INTERNAL;
     }
     uint8_t length = strnlen(reinterpret_cast<const char *>(apinfo->ssid), DeviceLayer::Internal::kMaxWiFiSSIDLength);
     if (length > sizeof(network.networkID))
     {
         ChipLogError(DeviceLayer, "SSID too long");
         return CHIP_ERROR_INTERNAL;
     }
     memcpy(network.networkID, apinfo->ssid, length);
     network.networkIDLen = length;

     return CHIP_NO_ERROR;
 }

 void ASRWiFiDriver::OnNetworkStatusChange()
 {
     Network configuredNetwork;
     bool staEnabled = false, staConnected = false;
     VerifyOrReturn(ASRUtils::IsStationEnabled(staEnabled) == CHIP_NO_ERROR);
     VerifyOrReturn(staEnabled && mpStatusChangeCallback != nullptr);
     CHIP_ERROR err = GetConnectedNetwork(configuredNetwork);
     if (err != CHIP_NO_ERROR)
     {
         return;
     }
     VerifyOrReturn(ASRUtils::IsStationConnected(staConnected) == CHIP_NO_ERROR);
     if (staConnected)
     {
         mpStatusChangeCallback->OnNetworkingStatusChange(
             Status::kSuccess, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)), NullOptional);
         return;
     }
     mpStatusChangeCallback->OnNetworkingStatusChange(
         Status::kUnknownError, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)),
         MakeOptional(GetLastDisconnectReason()));
 }

 CHIP_ERROR ASRWiFiDriver::SetLastDisconnectReason(int32_t reason)
 {
     mLastDisconnectedReason = reason;
     return CHIP_NO_ERROR;
 }

 int32_t ASRWiFiDriver::GetLastDisconnectReason()
 {
     return mLastDisconnectedReason;
 }

 size_t ASRWiFiDriver::WiFiNetworkIterator::Count()
 {
     return mDriver->mStagingNetwork.ssidLen == 0 ? 0 : 1;
 }

 bool ASRWiFiDriver::WiFiNetworkIterator::Next(Network & item)
 {
     if (mExhausted || mDriver->mStagingNetwork.ssidLen == 0)
     {
         return false;
     }
     memcpy(item.networkID, mDriver->mStagingNetwork.ssid, mDriver->mStagingNetwork.ssidLen);
     item.networkIDLen = mDriver->mStagingNetwork.ssidLen;
     item.connected    = false;
     mExhausted        = true;

     Network connectedNetwork;
     CHIP_ERROR err = GetConnectedNetwork(connectedNetwork);
     if (err == CHIP_NO_ERROR)
     {
         if (connectedNetwork.networkIDLen == item.networkIDLen &&
             memcmp(connectedNetwork.networkID, item.networkID, item.networkIDLen) == 0)
         {
             item.connected = true;
         }
     }
     return true;
 }

 } // namespace NetworkCommissioning
 } // namespace DeviceLayer
 } // namespace chip
	/*
	*
	* Copyright (c) 2021 Project CHIP Authors
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include "lega_wlan_api.h"
	#include <lib/support/CodeUtils.h>
	#include <lib/support/SafeInt.h>
	#include <limits>
	#include <platform/ASR/ASRConfig.h>
	#include <platform/ASR/ASRUtils.h>
	#include <platform/ASR/NetworkCommissioningDriver.h>
	#include <platform/CHIPDeviceLayer.h>
	#include <string>

	using namespace ::chip;
	using namespace ::chip::DeviceLayer::Internal;

	namespace chip {
	namespace DeviceLayer {
	namespace NetworkCommissioning {

	CHIP_ERROR ASRWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
	{
	CHIP_ERROR err;
	mpScanCallback = nullptr;
	mpConnectCallback = nullptr;
	mpStatusChangeCallback = networkStatusChangeCallback;

	lega_wlan_wifi_conf config = { 0 };
	err = chip::DeviceLayer::Internal::ASRUtils::asr_wifi_get_config(&config);

	if (err == CHIP_ERROR_KEY_NOT_FOUND)
	{
	return CHIP_NO_ERROR;
	}

	memcpy(mSavedNetwork.ssid, config.wifi_ssid, config.ssid_len + 1);
	memcpy(mSavedNetwork.credentials, config.wifi_key, config.key_len + 1);
	mSavedNetwork.ssidLen = config.ssid_len;
	mSavedNetwork.credentialsLen = config.key_len;

	mStagingNetwork = mSavedNetwork;

	return err;
	}

	void ASRWiFiDriver::Shutdown()
	{
	mpStatusChangeCallback = nullptr;
	}

	CHIP_ERROR ASRWiFiDriver::CommitConfiguration()
	{
	lega_wlan_wifi_conf config = { 0 };
	memcpy(config.wifi_ssid, mStagingNetwork.ssid, mStagingNetwork.ssidLen);
	memcpy(config.wifi_key, mStagingNetwork.credentials, mStagingNetwork.credentialsLen);
	config.ssid_len = mStagingNetwork.ssidLen;
	config.key_len = mStagingNetwork.credentialsLen;

	ReturnErrorOnFailure(chip::DeviceLayer::Internal::ASRUtils::asr_wifi_set_config(&config));

	mSavedNetwork = mStagingNetwork;
	return CHIP_NO_ERROR;
	}

	CHIP_ERROR ASRWiFiDriver::RevertConfiguration()
	{
	mStagingNetwork = mSavedNetwork;
	return CHIP_NO_ERROR;
	}

	bool ASRWiFiDriver::NetworkMatch(const WiFiNetwork & network, ByteSpan networkId)
	{
	return networkId.size() == network.ssidLen && memcmp(networkId.data(), network.ssid, network.ssidLen) == 0;
	}

	Status ASRWiFiDriver::AddOrUpdateNetwork(ByteSpan ssid, ByteSpan credentials, MutableCharSpan & outDebugText,
	uint8_t & outNetworkIndex)
	{
	outDebugText.reduce_size(0);
	outNetworkIndex = 0;
	VerifyOrReturnError(mStagingNetwork.ssidLen == 0 \|\| NetworkMatch(mStagingNetwork, ssid), Status::kBoundsExceeded);
	VerifyOrReturnError(credentials.size() <= sizeof(mStagingNetwork.credentials), Status::kOutOfRange);
	VerifyOrReturnError(ssid.size() <= sizeof(mStagingNetwork.ssid), Status::kOutOfRange);

	memset(mStagingNetwork.credentials, 0, sizeof(mStagingNetwork.credentials));
	memcpy(mStagingNetwork.credentials, credentials.data(), credentials.size());
	mStagingNetwork.credentialsLen = static_cast<decltype(mStagingNetwork.credentialsLen)>(credentials.size());

	memset(mStagingNetwork.ssid, 0, sizeof(mStagingNetwork.ssid));
	memcpy(mStagingNetwork.ssid, ssid.data(), ssid.size());
	mStagingNetwork.ssidLen = static_cast<decltype(mStagingNetwork.ssidLen)>(ssid.size());

	return Status::kSuccess;
	}

	Status ASRWiFiDriver::RemoveNetwork(ByteSpan networkId, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
	{
	outDebugText.reduce_size(0);
	outNetworkIndex = 0;
	VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);

	// Use empty ssid for representing invalid network
	mStagingNetwork.ssidLen = 0;
	return Status::kSuccess;
	}

	Status ASRWiFiDriver::ReorderNetwork(ByteSpan networkId, uint8_t index, MutableCharSpan & outDebugText)
	{
	outDebugText.reduce_size(0);
	// Only one network is supported now
	VerifyOrReturnError(index == 0, Status::kOutOfRange);
	VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);
	return Status::kSuccess;
	}

	CHIP_ERROR ASRWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
	// Set the wifi configuration
	lega_wlan_wifi_conf wifiConfig;

	// Set the wifi configuration
	memset(&wifiConfig, 0, sizeof(wifiConfig));
	memcpy(wifiConfig.wifi_ssid, ssid, ssidLen);
	memcpy(wifiConfig.wifi_key, key, keyLen);
	wifiConfig.ssid_len = ssidLen;
	wifiConfig.key_len = keyLen;

	err = chip::DeviceLayer::Internal::ASRUtils::asr_wifi_set_config(&wifiConfig);
	SuccessOrExit(err);

	ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
	err = ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Enabled);

	exit:
	return err;
	}

	void ASRWiFiDriver::OnConnectWiFiNetwork()
	{
	if (mpConnectCallback)
	{
	CommitConfiguration();
	mpConnectCallback->OnResult(Status::kSuccess, CharSpan(), 0);
	mpConnectCallback = nullptr;
	}
	}

	void ASRWiFiDriver::ConnectNetwork(ByteSpan networkId, ConnectCallback * callback)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	Status networkingStatus = Status::kSuccess;

	VerifyOrExit(NetworkMatch(mStagingNetwork, networkId), networkingStatus = Status::kNetworkIDNotFound);
	VerifyOrExit(mpConnectCallback == nullptr, networkingStatus = Status::kUnknownError);
	ChipLogProgress(NetworkProvisioning, "ASR NetworkCommissioningDelegate: SSID: %s", StringOrNullMarker(mStagingNetwork.ssid));
	err = ConnectWiFiNetwork(reinterpret_cast<const char *>(mStagingNetwork.ssid), mStagingNetwork.ssidLen,
	reinterpret_cast<const char *>(mStagingNetwork.credentials), mStagingNetwork.credentialsLen);
	mpConnectCallback = callback;
	exit:
	if (err != CHIP_NO_ERROR)
	{
	networkingStatus = Status::kUnknownError;
	}
	if (networkingStatus != Status::kSuccess)
	{
	ChipLogError(NetworkProvisioning, "Failed to connect to WiFi network:%s", chip::ErrorStr(err));
	mpConnectCallback = nullptr;
	callback->OnResult(networkingStatus, CharSpan(), 0);
	}
	}

	CHIP_ERROR ASRWiFiDriver::StartScanWiFiNetworks(ByteSpan ssid)
	{
	if (ASRUtils::EnableStationMode() != CHIP_NO_ERROR)
	{
	ChipLogProgress(DeviceLayer, "Start Scan WiFi Networks Failed");
	return CHIP_ERROR_INTERNAL;
	}

	if (!ssid.empty()) // ssid is given, only scan this network
	{
	char cSsid[DeviceLayer::Internal::kMaxWiFiSSIDLength] = {};
	memcpy(cSsid, ssid.data(), ssid.size());
	lega_wlan_start_scan_active(cSsid, 0);
	}
	else // scan all networks
	{
	lega_wlan_start_scan();
	}
	return CHIP_NO_ERROR;
	}

	void ASRWiFiDriver::OnScanWiFiNetworkDone(lega_wlan_scan_result_t * ScanResult)
	{
	uint8_t ap_num = ScanResult->ap_num;
	if (!ap_num)
	{
	ChipLogProgress(DeviceLayer, "No AP found");
	if (mpScanCallback != nullptr)
	{
	mpScanCallback->OnFinished(Status::kSuccess, CharSpan(), nullptr);
	mpScanCallback = nullptr;
	}
	return;
	}

	if (ScanResult)
	{
	if (CHIP_NO_ERROR == DeviceLayer::SystemLayer().ScheduleLambda([ap_num, ScanResult]() {
	ASRScanResponseIterator iter(ap_num, ScanResult);
	if (GetInstance().mpScanCallback)
	{
	GetInstance().mpScanCallback->OnFinished(Status::kSuccess, CharSpan(), &iter);
	GetInstance().mpScanCallback = nullptr;
	}
	else
	{
	ChipLogError(DeviceLayer, "can't find the ScanCallback function");
	}
	}))
	{
	ChipLogProgress(DeviceLayer, "ScheduleLambda OK");
	}
	}
	else
	{
	ChipLogError(DeviceLayer, "can't get ap_records ");
	if (mpScanCallback)
	{
	mpScanCallback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
	mpScanCallback = nullptr;
	}
	}
	}

	void ASRWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
	{
	if (callback != nullptr)
	{
	mpScanCallback = callback;
	if (StartScanWiFiNetworks(ssid) != CHIP_NO_ERROR)
	{
	mpScanCallback = nullptr;
	callback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
	}
	}
	}

	CHIP_ERROR GetConnectedNetwork(Network & network)
	{
	lega_wlan_ap_info_adv_t * apinfo = lega_wlan_get_associated_apinfo();

	if ((apinfo == NULL) \|\| (apinfo->ssid[0] == 0))
	{
	return CHIP_ERROR_INTERNAL;
	}
	uint8_t length = strnlen(reinterpret_cast<const char *>(apinfo->ssid), DeviceLayer::Internal::kMaxWiFiSSIDLength);
	if (length > sizeof(network.networkID))
	{
	ChipLogError(DeviceLayer, "SSID too long");
	return CHIP_ERROR_INTERNAL;
	}
	memcpy(network.networkID, apinfo->ssid, length);
	network.networkIDLen = length;

	return CHIP_NO_ERROR;
	}

	void ASRWiFiDriver::OnNetworkStatusChange()
	{
	Network configuredNetwork;
	bool staEnabled = false, staConnected = false;
	VerifyOrReturn(ASRUtils::IsStationEnabled(staEnabled) == CHIP_NO_ERROR);
	VerifyOrReturn(staEnabled && mpStatusChangeCallback != nullptr);
	CHIP_ERROR err = GetConnectedNetwork(configuredNetwork);
	if (err != CHIP_NO_ERROR)
	{
	return;
	}
	VerifyOrReturn(ASRUtils::IsStationConnected(staConnected) == CHIP_NO_ERROR);
	if (staConnected)
	{
	mpStatusChangeCallback->OnNetworkingStatusChange(
	Status::kSuccess, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)), NullOptional);
	return;
	}
	mpStatusChangeCallback->OnNetworkingStatusChange(
	Status::kUnknownError, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)),
	MakeOptional(GetLastDisconnectReason()));
	}

	CHIP_ERROR ASRWiFiDriver::SetLastDisconnectReason(int32_t reason)
	{
	mLastDisconnectedReason = reason;
	return CHIP_NO_ERROR;
	}

	int32_t ASRWiFiDriver::GetLastDisconnectReason()
	{
	return mLastDisconnectedReason;
	}

	size_t ASRWiFiDriver::WiFiNetworkIterator::Count()
	{
	return mDriver->mStagingNetwork.ssidLen == 0 ? 0 : 1;
	}

	bool ASRWiFiDriver::WiFiNetworkIterator::Next(Network & item)
	{
	if (mExhausted \|\| mDriver->mStagingNetwork.ssidLen == 0)
	{
	return false;
	}
	memcpy(item.networkID, mDriver->mStagingNetwork.ssid, mDriver->mStagingNetwork.ssidLen);
	item.networkIDLen = mDriver->mStagingNetwork.ssidLen;
	item.connected = false;
	mExhausted = true;

	Network connectedNetwork;
	CHIP_ERROR err = GetConnectedNetwork(connectedNetwork);
	if (err == CHIP_NO_ERROR)
	{
	if (connectedNetwork.networkIDLen == item.networkIDLen &&
	memcmp(connectedNetwork.networkID, item.networkID, item.networkIDLen) == 0)
	{
	item.connected = true;
	}
	}
	return true;
	}

	} // namespace NetworkCommissioning
	} // namespace DeviceLayer
	} // namespace chip