src/platform/silabs/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 <lib/support/CodeUtils.h>
 #include <lib/support/SafeInt.h>
 #include <platform/CHIPDeviceLayer.h>
 #include <platform/silabs/NetworkCommissioningWiFiDriver.h>
 #include <platform/silabs/SilabsConfig.h>

 #include <limits>

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

 namespace chip {
 namespace DeviceLayer {
 namespace NetworkCommissioning {

 namespace {
 NetworkCommissioning::WiFiScanResponse * sScanResult;
 SlScanResponseIterator<NetworkCommissioning::WiFiScanResponse> mScanResponseIter(sScanResult);
 } // namespace

 CHIP_ERROR SlWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
 {
     CHIP_ERROR err;
     size_t ssidLen         = 0;
     size_t credentialsLen  = 0;
     mpScanCallback         = nullptr;
     mpConnectCallback      = nullptr;
     mpStatusChangeCallback = networkStatusChangeCallback;

 #ifdef SL_ONNETWORK_PAIRING
     memcpy(&mSavedNetwork.ssid[0], SL_WIFI_SSID, sizeof(SL_WIFI_SSID));
     memcpy(&mSavedNetwork.credentials[0], SL_WIFI_PSK, sizeof(SL_WIFI_PSK));
     credentialsLen               = sizeof(SL_WIFI_PSK);
     ssidLen                      = sizeof(SL_WIFI_SSID);
     mSavedNetwork.credentialsLen = credentialsLen;
     mSavedNetwork.ssidLen        = ssidLen;
     mStagingNetwork              = mSavedNetwork;
     err                          = CHIP_NO_ERROR;
 #else
     // If reading fails, wifi is not provisioned, no need to go further.
     err = SilabsConfig::ReadConfigValueStr(SilabsConfig::kConfigKey_WiFiSSID, mSavedNetwork.ssid, sizeof(mSavedNetwork.ssid),
                                            ssidLen);
     VerifyOrReturnError(err == CHIP_NO_ERROR, CHIP_NO_ERROR);

     err = SilabsConfig::ReadConfigValueStr(SilabsConfig::kConfigKey_WiFiPSK, mSavedNetwork.credentials,
                                            sizeof(mSavedNetwork.credentials), credentialsLen);
     VerifyOrReturnError(err == CHIP_NO_ERROR, CHIP_NO_ERROR);

     mSavedNetwork.credentialsLen = credentialsLen;
     mSavedNetwork.ssidLen        = ssidLen;
     mStagingNetwork              = mSavedNetwork;
 #endif
     ConnectWiFiNetwork(mSavedNetwork.ssid, ssidLen, mSavedNetwork.credentials, credentialsLen);
     return err;
 }

 CHIP_ERROR SlWiFiDriver::CommitConfiguration()
 {
     uint8_t securityType = WFX_SEC_WPA2;

     ReturnErrorOnFailure(SilabsConfig::WriteConfigValueStr(SilabsConfig::kConfigKey_WiFiSSID, mStagingNetwork.ssid));
     ReturnErrorOnFailure(SilabsConfig::WriteConfigValueStr(SilabsConfig::kConfigKey_WiFiPSK, mStagingNetwork.credentials));
     ReturnErrorOnFailure(SilabsConfig::WriteConfigValueBin(SilabsConfig::kConfigKey_WiFiSEC, &securityType, sizeof(securityType)));

     mSavedNetwork = mStagingNetwork;
     return CHIP_NO_ERROR;
 }

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

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

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

 CHIP_ERROR SlWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
 {
     int32_t status = SL_STATUS_OK;
     if (ConnectivityMgr().IsWiFiStationProvisioned())
     {
         ChipLogProgress(DeviceLayer, "Disconecting for current wifi");
         status = wfx_sta_discon();
         if (status != SL_STATUS_OK)
         {
             return CHIP_ERROR_INTERNAL;
         }
     }
     ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
     // Set the wifi configuration
     wfx_wifi_provision_t wifiConfig = {};
     memcpy(wifiConfig.ssid, ssid, ssidLen);
     memcpy(wifiConfig.passkey, key, keyLen);
     wifiConfig.security = WFX_SEC_WPA2;

     ChipLogProgress(NetworkProvisioning, "Setting up connection for WiFi SSID: %.*s", static_cast<int>(ssidLen), ssid);
     // Configure the WFX WiFi interface.
     wfx_set_wifi_provision(&wifiConfig);
     ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
     ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Enabled));
     return CHIP_NO_ERROR;
 }

 // TODO: Re-write implementation with proper driver based callback
 void SlWiFiDriver::UpdateNetworkingStatus()
 {
     if (mpStatusChangeCallback == nullptr)
     {
         ChipLogError(NetworkProvisioning, "networkStatusChangeCallback is nil");
         return;
     }

     if (mStagingNetwork.ssidLen == 0)
     {
         ChipLogError(NetworkProvisioning, "ssidLen is 0");
         return;
     }

     ByteSpan networkId = ByteSpan((const unsigned char *) mStagingNetwork.ssid, mStagingNetwork.ssidLen);
     if (!wfx_is_sta_connected())
     {
         // TODO: https://github.com/project-chip/connectedhomeip/issues/26861
         mpStatusChangeCallback->OnNetworkingStatusChange(Status::kUnknownError, MakeOptional(networkId),
                                                          MakeOptional(static_cast<int32_t>(SL_STATUS_FAIL)));
         return;
     }
     mpStatusChangeCallback->OnNetworkingStatusChange(Status::kSuccess, MakeOptional(networkId), NullOptional);
 }

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

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

     VerifyOrExit(NetworkMatch(mStagingNetwork, networkId), networkingStatus = Status::kNetworkIDNotFound);
     VerifyOrExit(mpConnectCallback == nullptr, networkingStatus = Status::kUnknownError);

     err = ConnectWiFiNetwork(mStagingNetwork.ssid, mStagingNetwork.ssidLen, mStagingNetwork.credentials,
                              mStagingNetwork.credentialsLen);
     if (err == CHIP_NO_ERROR)
     {
         mpConnectCallback = callback;
         networkingStatus  = Status::kSuccess;
     }

 exit:
     if (networkingStatus != Status::kSuccess)
     {
         ChipLogError(NetworkProvisioning, "Failed to connect to WiFi network:%s", chip::ErrorStr(err));
         mpConnectCallback = nullptr;
         callback->OnResult(networkingStatus, CharSpan(), 0);
     }
 }

 chip::BitFlags<WiFiSecurity> SlWiFiDriver::ConvertSecuritytype(wfx_sec_t security)
 {
     chip::BitFlags<WiFiSecurity> securityType;
     if (security == WFX_SEC_NONE)
     {
         securityType = WiFiSecurity::kUnencrypted;
     }
     else if (security == WFX_SEC_WEP)
     {
         securityType = WiFiSecurity::kWep;
     }
     else if (security == WFX_SEC_WPA)
     {
         securityType = WiFiSecurity::kWpaPersonal;
     }
     else if (security == WFX_SEC_WPA2)
     {
         securityType = WiFiSecurity::kWpa2Personal;
     }
     else if (security == WFX_SEC_WPA3)
     {
         securityType = WiFiSecurity::kWpa3Personal;
     }
     else
     {
         // wfx_sec_t support more type
         securityType = WiFiSecurity::kUnencrypted;
     }

     return securityType;
 }

 bool SlWiFiDriver::StartScanWiFiNetworks(ByteSpan ssid)
 {
     bool scanStarted = false;
     ChipLogProgress(DeviceLayer, "Start Scan WiFi Networks");
     if (!ssid.empty()) // ssid is given, only scan this network
     {
         char cSsid[DeviceLayer::Internal::kMaxWiFiSSIDLength] = {};
         memcpy(cSsid, ssid.data(), ssid.size());
         scanStarted = wfx_start_scan(cSsid, OnScanWiFiNetworkDone);
     }
     else // scan all networks
     {
         scanStarted = wfx_start_scan(nullptr, OnScanWiFiNetworkDone);
     }
     return scanStarted;
 }

 void SlWiFiDriver::OnScanWiFiNetworkDone(wfx_wifi_scan_result_t * aScanResult)
 {
     ChipLogProgress(DeviceLayer, "OnScanWiFiNetworkDone");
     if (!aScanResult)
     {
         if (GetInstance().mpScanCallback != nullptr)
         {
             if (mScanResponseIter.Count() == 0)
             {
                 // if there is no network found, return kNetworkNotFound
                 DeviceLayer::SystemLayer().ScheduleLambda([]() {
                     GetInstance().mpScanCallback->OnFinished(NetworkCommissioning::Status::kNetworkNotFound, CharSpan(), nullptr);
                     GetInstance().mpScanCallback = nullptr;
                 });
                 return;
             }
             DeviceLayer::SystemLayer().ScheduleLambda([]() {
                 GetInstance().mpScanCallback->OnFinished(NetworkCommissioning::Status::kSuccess, CharSpan(), &mScanResponseIter);
                 GetInstance().mpScanCallback = nullptr;
             });
         }
     }
     else
     {
         NetworkCommissioning::WiFiScanResponse scanResponse = {};

         scanResponse.security.Set(GetInstance().ConvertSecuritytype(aScanResult->security));
         scanResponse.channel = aScanResult->chan;
         scanResponse.rssi    = aScanResult->rssi;
         scanResponse.ssidLen = strnlen(aScanResult->ssid, DeviceLayer::Internal::kMaxWiFiSSIDLength);
         memcpy(scanResponse.ssid, aScanResult->ssid, scanResponse.ssidLen);
         memcpy(scanResponse.bssid, aScanResult->bssid, sizeof(scanResponse.bssid));

         mScanResponseIter.Add(&scanResponse);
     }
 }

 void SlWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
 {
     if (callback != nullptr)
     {
         mpScanCallback = callback;
         if (!StartScanWiFiNetworks(ssid))
         {
             ChipLogError(DeviceLayer, "ScanWiFiNetworks failed to start");
             mpScanCallback = nullptr;
             callback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
         }
     }
 }

 CHIP_ERROR GetConnectedNetwork(Network & network)
 {
     wfx_wifi_provision_t wifiConfig;

     if (!wfx_is_sta_connected() || !wfx_get_wifi_provision(&wifiConfig))
     {
         return CHIP_ERROR_INCORRECT_STATE;
     }

     uint8_t length = strnlen(wifiConfig.ssid, DeviceLayer::Internal::kMaxWiFiSSIDLength);
     if (length > sizeof(network.networkID))
     {
         ChipLogError(DeviceLayer, "SSID too long");
         return CHIP_ERROR_INTERNAL;
     }

     memcpy(network.networkID, wifiConfig.ssid, length);
     network.networkIDLen = length;

     return CHIP_NO_ERROR;
 }

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

 bool SlWiFiDriver::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 <lib/support/CodeUtils.h>
	#include <lib/support/SafeInt.h>
	#include <platform/CHIPDeviceLayer.h>
	#include <platform/silabs/NetworkCommissioningWiFiDriver.h>
	#include <platform/silabs/SilabsConfig.h>

	#include <limits>

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

	namespace chip {
	namespace DeviceLayer {
	namespace NetworkCommissioning {

	namespace {
	NetworkCommissioning::WiFiScanResponse * sScanResult;
	SlScanResponseIterator<NetworkCommissioning::WiFiScanResponse> mScanResponseIter(sScanResult);
	} // namespace

	CHIP_ERROR SlWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
	{
	CHIP_ERROR err;
	size_t ssidLen = 0;
	size_t credentialsLen = 0;
	mpScanCallback = nullptr;
	mpConnectCallback = nullptr;
	mpStatusChangeCallback = networkStatusChangeCallback;

	#ifdef SL_ONNETWORK_PAIRING
	memcpy(&mSavedNetwork.ssid[0], SL_WIFI_SSID, sizeof(SL_WIFI_SSID));
	memcpy(&mSavedNetwork.credentials[0], SL_WIFI_PSK, sizeof(SL_WIFI_PSK));
	credentialsLen = sizeof(SL_WIFI_PSK);
	ssidLen = sizeof(SL_WIFI_SSID);
	mSavedNetwork.credentialsLen = credentialsLen;
	mSavedNetwork.ssidLen = ssidLen;
	mStagingNetwork = mSavedNetwork;
	err = CHIP_NO_ERROR;
	#else
	// If reading fails, wifi is not provisioned, no need to go further.
	err = SilabsConfig::ReadConfigValueStr(SilabsConfig::kConfigKey_WiFiSSID, mSavedNetwork.ssid, sizeof(mSavedNetwork.ssid),
	ssidLen);
	VerifyOrReturnError(err == CHIP_NO_ERROR, CHIP_NO_ERROR);

	err = SilabsConfig::ReadConfigValueStr(SilabsConfig::kConfigKey_WiFiPSK, mSavedNetwork.credentials,
	sizeof(mSavedNetwork.credentials), credentialsLen);
	VerifyOrReturnError(err == CHIP_NO_ERROR, CHIP_NO_ERROR);

	mSavedNetwork.credentialsLen = credentialsLen;
	mSavedNetwork.ssidLen = ssidLen;
	mStagingNetwork = mSavedNetwork;
	#endif
	ConnectWiFiNetwork(mSavedNetwork.ssid, ssidLen, mSavedNetwork.credentials, credentialsLen);
	return err;
	}

	CHIP_ERROR SlWiFiDriver::CommitConfiguration()
	{
	uint8_t securityType = WFX_SEC_WPA2;

	ReturnErrorOnFailure(SilabsConfig::WriteConfigValueStr(SilabsConfig::kConfigKey_WiFiSSID, mStagingNetwork.ssid));
	ReturnErrorOnFailure(SilabsConfig::WriteConfigValueStr(SilabsConfig::kConfigKey_WiFiPSK, mStagingNetwork.credentials));
	ReturnErrorOnFailure(SilabsConfig::WriteConfigValueBin(SilabsConfig::kConfigKey_WiFiSEC, &securityType, sizeof(securityType)));

	mSavedNetwork = mStagingNetwork;
	return CHIP_NO_ERROR;
	}

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

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

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

	CHIP_ERROR SlWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
	{
	int32_t status = SL_STATUS_OK;
	if (ConnectivityMgr().IsWiFiStationProvisioned())
	{
	ChipLogProgress(DeviceLayer, "Disconecting for current wifi");
	status = wfx_sta_discon();
	if (status != SL_STATUS_OK)
	{
	return CHIP_ERROR_INTERNAL;
	}
	}
	ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
	// Set the wifi configuration
	wfx_wifi_provision_t wifiConfig = {};
	memcpy(wifiConfig.ssid, ssid, ssidLen);
	memcpy(wifiConfig.passkey, key, keyLen);
	wifiConfig.security = WFX_SEC_WPA2;

	ChipLogProgress(NetworkProvisioning, "Setting up connection for WiFi SSID: %.*s", static_cast<int>(ssidLen), ssid);
	// Configure the WFX WiFi interface.
	wfx_set_wifi_provision(&wifiConfig);
	ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
	ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Enabled));
	return CHIP_NO_ERROR;
	}

	// TODO: Re-write implementation with proper driver based callback
	void SlWiFiDriver::UpdateNetworkingStatus()
	{
	if (mpStatusChangeCallback == nullptr)
	{
	ChipLogError(NetworkProvisioning, "networkStatusChangeCallback is nil");
	return;
	}

	if (mStagingNetwork.ssidLen == 0)
	{
	ChipLogError(NetworkProvisioning, "ssidLen is 0");
	return;
	}

	ByteSpan networkId = ByteSpan((const unsigned char *) mStagingNetwork.ssid, mStagingNetwork.ssidLen);
	if (!wfx_is_sta_connected())
	{
	// TODO: https://github.com/project-chip/connectedhomeip/issues/26861
	mpStatusChangeCallback->OnNetworkingStatusChange(Status::kUnknownError, MakeOptional(networkId),
	MakeOptional(static_cast<int32_t>(SL_STATUS_FAIL)));
	return;
	}
	mpStatusChangeCallback->OnNetworkingStatusChange(Status::kSuccess, MakeOptional(networkId), NullOptional);
	}

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

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

	VerifyOrExit(NetworkMatch(mStagingNetwork, networkId), networkingStatus = Status::kNetworkIDNotFound);
	VerifyOrExit(mpConnectCallback == nullptr, networkingStatus = Status::kUnknownError);

	err = ConnectWiFiNetwork(mStagingNetwork.ssid, mStagingNetwork.ssidLen, mStagingNetwork.credentials,
	mStagingNetwork.credentialsLen);
	if (err == CHIP_NO_ERROR)
	{
	mpConnectCallback = callback;
	networkingStatus = Status::kSuccess;
	}

	exit:
	if (networkingStatus != Status::kSuccess)
	{
	ChipLogError(NetworkProvisioning, "Failed to connect to WiFi network:%s", chip::ErrorStr(err));
	mpConnectCallback = nullptr;
	callback->OnResult(networkingStatus, CharSpan(), 0);
	}
	}

	chip::BitFlags<WiFiSecurity> SlWiFiDriver::ConvertSecuritytype(wfx_sec_t security)
	{
	chip::BitFlags<WiFiSecurity> securityType;
	if (security == WFX_SEC_NONE)
	{
	securityType = WiFiSecurity::kUnencrypted;
	}
	else if (security == WFX_SEC_WEP)
	{
	securityType = WiFiSecurity::kWep;
	}
	else if (security == WFX_SEC_WPA)
	{
	securityType = WiFiSecurity::kWpaPersonal;
	}
	else if (security == WFX_SEC_WPA2)
	{
	securityType = WiFiSecurity::kWpa2Personal;
	}
	else if (security == WFX_SEC_WPA3)
	{
	securityType = WiFiSecurity::kWpa3Personal;
	}
	else
	{
	// wfx_sec_t support more type
	securityType = WiFiSecurity::kUnencrypted;
	}

	return securityType;
	}

	bool SlWiFiDriver::StartScanWiFiNetworks(ByteSpan ssid)
	{
	bool scanStarted = false;
	ChipLogProgress(DeviceLayer, "Start Scan WiFi Networks");
	if (!ssid.empty()) // ssid is given, only scan this network
	{
	char cSsid[DeviceLayer::Internal::kMaxWiFiSSIDLength] = {};
	memcpy(cSsid, ssid.data(), ssid.size());
	scanStarted = wfx_start_scan(cSsid, OnScanWiFiNetworkDone);
	}
	else // scan all networks
	{
	scanStarted = wfx_start_scan(nullptr, OnScanWiFiNetworkDone);
	}
	return scanStarted;
	}

	void SlWiFiDriver::OnScanWiFiNetworkDone(wfx_wifi_scan_result_t * aScanResult)
	{
	ChipLogProgress(DeviceLayer, "OnScanWiFiNetworkDone");
	if (!aScanResult)
	{
	if (GetInstance().mpScanCallback != nullptr)
	{
	if (mScanResponseIter.Count() == 0)
	{
	// if there is no network found, return kNetworkNotFound
	DeviceLayer::SystemLayer().ScheduleLambda([]() {
	GetInstance().mpScanCallback->OnFinished(NetworkCommissioning::Status::kNetworkNotFound, CharSpan(), nullptr);
	GetInstance().mpScanCallback = nullptr;
	});
	return;
	}
	DeviceLayer::SystemLayer().ScheduleLambda([]() {
	GetInstance().mpScanCallback->OnFinished(NetworkCommissioning::Status::kSuccess, CharSpan(), &mScanResponseIter);
	GetInstance().mpScanCallback = nullptr;
	});
	}
	}
	else
	{
	NetworkCommissioning::WiFiScanResponse scanResponse = {};

	scanResponse.security.Set(GetInstance().ConvertSecuritytype(aScanResult->security));
	scanResponse.channel = aScanResult->chan;
	scanResponse.rssi = aScanResult->rssi;
	scanResponse.ssidLen = strnlen(aScanResult->ssid, DeviceLayer::Internal::kMaxWiFiSSIDLength);
	memcpy(scanResponse.ssid, aScanResult->ssid, scanResponse.ssidLen);
	memcpy(scanResponse.bssid, aScanResult->bssid, sizeof(scanResponse.bssid));

	mScanResponseIter.Add(&scanResponse);
	}
	}

	void SlWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
	{
	if (callback != nullptr)
	{
	mpScanCallback = callback;
	if (!StartScanWiFiNetworks(ssid))
	{
	ChipLogError(DeviceLayer, "ScanWiFiNetworks failed to start");
	mpScanCallback = nullptr;
	callback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
	}
	}
	}

	CHIP_ERROR GetConnectedNetwork(Network & network)
	{
	wfx_wifi_provision_t wifiConfig;

	if (!wfx_is_sta_connected() \|\| !wfx_get_wifi_provision(&wifiConfig))
	{
	return CHIP_ERROR_INCORRECT_STATE;
	}

	uint8_t length = strnlen(wifiConfig.ssid, DeviceLayer::Internal::kMaxWiFiSSIDLength);
	if (length > sizeof(network.networkID))
	{
	ChipLogError(DeviceLayer, "SSID too long");
	return CHIP_ERROR_INTERNAL;
	}

	memcpy(network.networkID, wifiConfig.ssid, length);
	network.networkIDLen = length;

	return CHIP_NO_ERROR;
	}

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

	bool SlWiFiDriver::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