src/platform/bouffalolab/BL702/NetworkCommissioningDriver.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *    Copyright (c) 2022 Project CHIP Authors
  *    All rights reserved.
  *
  *    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 <platform/CHIPDeviceLayer.h>
 #include <platform/bouffalolab/BL702/NetworkCommissioningDriver.h>
 #include <platform/bouffalolab/BL702/wifi_mgmr_portable.h>

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

 namespace chip {
 namespace DeviceLayer {
 namespace NetworkCommissioning {

 CHIP_ERROR BLWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
 {
     CHIP_ERROR err;
     size_t ssidLen        = 0;
     size_t credentialsLen = 0;

     mpScanCallback         = nullptr;
     mpConnectCallback      = nullptr;
     mpStatusChangeCallback = networkStatusChangeCallback;

     err = PersistedStorage::KeyValueStoreMgr().Get(BLConfig::kConfigKey_WiFiSSID, mSavedNetwork.credentials,
                                                    sizeof(mSavedNetwork.credentials), &credentialsLen);
     SuccessOrExit(err);
     err = PersistedStorage::KeyValueStoreMgr().Get(BLConfig::kConfigKey_WiFiPassword, mSavedNetwork.ssid,
                                                    sizeof(mSavedNetwork.ssid), &ssidLen);
     SuccessOrExit(err);

     mSavedNetwork.credentialsLen = credentialsLen;
     mSavedNetwork.ssidLen        = ssidLen;

     mStagingNetwork = mSavedNetwork;
     mScanSpecific   = false;

 exit:
     if (err == CHIP_ERROR_PERSISTED_STORAGE_VALUE_NOT_FOUND)
     {
         /** Not commissioned, SSID and Network Password not found. */
         return CHIP_NO_ERROR;
     }

     return err;
 }

 void BLWiFiDriver::Shutdown()
 {
     mpStatusChangeCallback = nullptr;
     mScanSpecific          = false;
     memset(mScanSSID, 0, sizeof(mScanSSID));
 }

 CHIP_ERROR BLWiFiDriver::CommitConfiguration()
 {
     ChipLogProgress(NetworkProvisioning, "BLWiFiDriver::CommitConfiguration");
     ReturnErrorOnFailure(
         PersistedStorage::KeyValueStoreMgr().Put(BLConfig::kConfigKey_WiFiSSID, mStagingNetwork.ssid, mStagingNetwork.ssidLen));
     ReturnErrorOnFailure(PersistedStorage::KeyValueStoreMgr().Put(BLConfig::kConfigKey_WiFiPassword, mStagingNetwork.credentials,
                                                                   mStagingNetwork.credentialsLen));
     mSavedNetwork = mStagingNetwork;
     return CHIP_NO_ERROR;
 }

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

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

 Status BLWiFiDriver::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);

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

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

     return Status::kSuccess;
 }

 Status BLWiFiDriver::RemoveNetwork(ByteSpan networkId, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
 {
     outDebugText.reduce_size(0);
     outNetworkIndex = 0;

     VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);

     mStagingNetwork.ssidLen = 0;
     return Status::kSuccess;
 }

 Status BLWiFiDriver::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 BLWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
 {
     ChipLogProgress(NetworkProvisioning, "ConnectWiFiNetwork");
     // Valid Credentials length are:
     // - 0 bytes: Unsecured (open) connection
     // - 5 bytes: WEP-64 passphrase
     // - 10 hexadecimal ASCII characters: WEP-64 40-bit hex raw PSK
     // - 13 bytes: WEP-128 passphrase
     // - 26 hexadecimal ASCII characters: WEP-128 104-bit hex raw PSK
     // - 8..63 bytes: WPA/WPA2/WPA3 passphrase
     // - 64 bytes: WPA/WPA2/WPA3 raw hex PSK
     // Note 10 hex WEP64 and 13 bytes / 26 hex WEP128 passphrase are covered by 8~63 bytes WPA passphrase, so we don't check WEP64
     // hex and WEP128 passphrase.
     if (keyLen == BLWiFiDriver::WiFiCredentialLength::kOpen || keyLen == BLWiFiDriver::WiFiCredentialLength::kWEP64 ||
         (keyLen >= BLWiFiDriver::WiFiCredentialLength::kMinWPAPSK && keyLen <= BLWiFiDriver::WiFiCredentialLength::kMaxWPAPSK))
     {
         wifiInterface_disconnect();
         vTaskDelay(500);
         if (keyLen == BLWiFiDriver::WiFiCredentialLength::kOpen)
         {
             wifiInterface_connect((char *) ssid, NULL);
         }
         else
         {
             wifiInterface_connect((char *) ssid, (char *) key);
         }
     }
     else
     {
         return CHIP_ERROR_INVALID_STRING_LENGTH;
     }
     ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManager::kWiFiStationState_Connecting);
     return CHIP_NO_ERROR;
 }

 void BLWiFiDriver::OnConnectWiFiNetwork(bool isConnected)
 {
     ChipLogProgress(NetworkProvisioning, "BLWiFiDriver::OnConnectWiFiNetwork, isConnected=%d\r\n", isConnected);
     if (mpConnectCallback)
     {
         if (isConnected)
         {
             mpConnectCallback->OnResult(Status::kSuccess, CharSpan(), 0);
         }
         else
         {
             mpConnectCallback->OnResult(Status::kUnknownError, CharSpan(), 0);
         }
         mpConnectCallback = nullptr;
     }
 }

 void BLWiFiDriver::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, "BL NetworkCommissioningDelegate: SSID: %.*s", static_cast<int>(networkId.size()),
                     networkId.data());

     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);
     }
 }

 void BLWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
 {
     if (callback != nullptr)
     {
         ChipLogError(NetworkProvisioning, "ssid.data(): %s", ssid.data());

         if (ssid.data())
         {
             memset(mScanSSID, 0, sizeof(mScanSSID));
             memcpy(mScanSSID, ssid.data(), ssid.size());
             mScanSpecific = true;
         }
         mpScanCallback = callback;
         wifiInterface_startScan();
     }
 }

 void BLWiFiDriver::OnScanWiFiNetworkDone(void * opaque)
 {
     netbus_wifi_mgmr_msg_cmd_t * pkg_data = (netbus_wifi_mgmr_msg_cmd_t *) ((struct pkg_protocol *) opaque)->payload;
     netbus_fs_scan_ind_cmd_msg_t * pmsg   = (netbus_fs_scan_ind_cmd_msg_t *) ((netbus_fs_scan_ind_cmd_msg_t *) pkg_data);

     size_t i = 0, ap_num = 0;
     WiFiScanResponse *pScanResponse, *p;

     for (i = 0; i < pmsg->num; i++)
     {
         ChipLogProgress(DeviceLayer, "OnScanWiFiNetworkDone %s", pmsg->records[i].ssid);
         if (mScanSpecific && !strcmp(mScanSSID, (char *) (pmsg->records[i].ssid)))
         {
             ap_num = 1;
             break;
         }
     }

     if (0 == pmsg->num || (mScanSpecific && 0 == ap_num))
     {
         ChipLogProgress(DeviceLayer, "No AP found");
         if (mpScanCallback != nullptr)
         {
             mpScanCallback->OnFinished(Status::kSuccess, CharSpan(), nullptr);
             mpScanCallback = nullptr;
         }
         return;
     }

     if (ap_num)
     {
         p = pScanResponse = (WiFiScanResponse *) malloc(sizeof(WiFiScanResponse) * ap_num);
     }
     else
     {
         p = pScanResponse = (WiFiScanResponse *) malloc(sizeof(WiFiScanResponse) * pmsg->num);
         ap_num            = pmsg->num;
     }
     for (i = 0; i < pmsg->num; i++)
     {
         if (mScanSpecific && strcmp(mScanSSID, (char *) (pmsg->records[i].ssid)))
         {
             continue;
         }

         p->security.SetRaw(pmsg->records[i].auth_mode);
         p->ssidLen  = strlen((char *) pmsg->records[i].ssid) < chip::DeviceLayer::Internal::kMaxWiFiSSIDLength
              ? strlen((char *) pmsg->records[i].ssid)
              : chip::DeviceLayer::Internal::kMaxWiFiSSIDLength;
         p->channel  = pmsg->records[i].channel;
         p->wiFiBand = chip::DeviceLayer::NetworkCommissioning::WiFiBand::k2g4;
         p->rssi     = pmsg->records[i].rssi;
         memcpy(p->ssid, pmsg->records[i].ssid, p->ssidLen);
         memcpy(p->bssid, pmsg->records[i].bssid, 6);

         if (mScanSpecific)
         {
             break;
         }

         p++;
     }

     if (CHIP_NO_ERROR == DeviceLayer::SystemLayer().ScheduleLambda([ap_num, pScanResponse]() {
             BLScanResponseIterator iter(ap_num, pScanResponse);
             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");
     }

     free(pScanResponse);
 }

 CHIP_ERROR GetConfiguredNetwork(Network & network)
 {
     struct bflbwifi_ap_record * pApInfo = wifiInterface_getApInfo();

     if (NULL == pApInfo)
     {
         return CHIP_ERROR_INTERNAL;
     }

     ChipLogProgress(DeviceLayer, "GetConfiguredNetwork [%s]", pApInfo->ssid);

     uint8_t length = strnlen(reinterpret_cast<const char *>(pApInfo->ssid), DeviceLayer::Internal::kMaxWiFiSSIDLength);
     if (length > sizeof(network.networkID))
     {
         ChipLogError(DeviceLayer, "SSID too long");
         return CHIP_ERROR_INTERNAL;
     }

     memcpy(network.networkID, pApInfo->ssid, length);
     network.networkIDLen = length;
     return CHIP_NO_ERROR;
 }

 void BLWiFiDriver::OnNetworkStatusChange()
 {
     Network configuredNetwork;
     bool staConnected = false;

     ChipLogProgress(DeviceLayer, "OnNetworkStatusChange");

     VerifyOrReturn(mpStatusChangeCallback != nullptr);

     if (CHIP_NO_ERROR != GetConfiguredNetwork(configuredNetwork))
     {
         ChipLogError(DeviceLayer, "Failed to get configured network when updating network status.");
         return;
     }

     if (ConnectivityMgrImpl().GetWiFiStationState() == ConnectivityManager::kWiFiStationState_Connected)
     {
         ChipLogProgress(DeviceLayer, "OnNetworkStatusChange kWiFiStationState_Connected, %s", configuredNetwork.networkID);
         staConnected = true;
     }

     if (staConnected)
     {
         mpStatusChangeCallback->OnNetworkingStatusChange(
             Status::kSuccess, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)), NullOptional);
         return;
     }
     mpStatusChangeCallback->OnNetworkingStatusChange(
         Status::kUnknownError, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)), NullOptional);
 }

 CHIP_ERROR BLWiFiDriver::SetLastDisconnectReason(const ChipDeviceEvent * event)
 {
     // TODO: to be added
     mLastDisconnectedReason = 0;

     return CHIP_NO_ERROR;
 }

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

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

 bool BLWiFiDriver::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 configuredNetwork;
     CHIP_ERROR err = GetConfiguredNetwork(configuredNetwork);
     if (err == CHIP_NO_ERROR)
     {
         if (ConnectivityMgrImpl()._IsWiFiStationConnected() && configuredNetwork.networkIDLen == item.networkIDLen &&
             memcmp(configuredNetwork.networkID, item.networkID, item.networkIDLen) == 0)
         {
             item.connected = true;
         }
     }

     return true;
 }

 void NetworkEventHandler(const ChipDeviceEvent * event, intptr_t arg)
 {
     if (!(DeviceEventType::IsPlatformSpecific(event->Type) && DeviceEventType::IsPublic(event->Type)))
     {
         return;
     }

     switch (event->Type)
     {
     case kWiFiOnInitDone:
         break;
     case kWiFiOnConnected:
         BLWiFiDriver::GetInstance().OnNetworkStatusChange();
         break;
     case kGotIpAddress:
         ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManagerImpl::kWiFiStationState_Connected);
         ConnectivityMgrImpl().OnConnectivityChanged(deviceInterface_getNetif());
         break;
     case kGotIpv6Address:
         ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManagerImpl::kWiFiStationState_Connected);
         ConnectivityMgrImpl().OnConnectivityChanged(deviceInterface_getNetif());
         break;
     case kWiFiOnDisconnected:
         if (ConnectivityManager::kWiFiStationState_Connecting == ConnectivityMgrImpl().GetWiFiStationState())
         {
             ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManager::kWiFiStationState_Connecting_Failed);
         }
         break;
     default:
         ChipLogProgress(DeviceLayer, "Undefined network commission event type %x.\r\n", event->Type);
         break;
     }
 }

 extern "C" void wifi_event_handler(uint32_t code)
 {
     ChipDeviceEvent event;

     memset(&event, 0, sizeof(ChipDeviceEvent));
     switch (code)
     {
     case VIRT_NET_EV_ON_CONNECTED:
         event.Type = kWiFiOnConnected;
         PlatformMgr().PostEventOrDie(&event);
         break;
     case VIRT_NET_EV_ON_GOT_IP:
         event.Type = kGotIpAddress;
         PlatformMgr().PostEventOrDie(&event);
         break;
     case VIRT_NET_EV_ON_DISCONNECT:
         event.Type = kWiFiOnDisconnected;
         PlatformMgr().PostEventOrDie(&event);
         break;
     default:
         ChipLogProgress(DeviceLayer, "[APP] [EVT] Unknown code %lu \r\n", code);
     }
 }

 } // namespace NetworkCommissioning
 } // namespace DeviceLayer
 } // namespace chip
	/*
	* Copyright (c) 2022 Project CHIP Authors
	* All rights reserved.
	*
	* 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 <platform/CHIPDeviceLayer.h>
	#include <platform/bouffalolab/BL702/NetworkCommissioningDriver.h>
	#include <platform/bouffalolab/BL702/wifi_mgmr_portable.h>

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

	namespace chip {
	namespace DeviceLayer {
	namespace NetworkCommissioning {

	CHIP_ERROR BLWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
	{
	CHIP_ERROR err;
	size_t ssidLen = 0;
	size_t credentialsLen = 0;

	mpScanCallback = nullptr;
	mpConnectCallback = nullptr;
	mpStatusChangeCallback = networkStatusChangeCallback;

	err = PersistedStorage::KeyValueStoreMgr().Get(BLConfig::kConfigKey_WiFiSSID, mSavedNetwork.credentials,
	sizeof(mSavedNetwork.credentials), &credentialsLen);
	SuccessOrExit(err);
	err = PersistedStorage::KeyValueStoreMgr().Get(BLConfig::kConfigKey_WiFiPassword, mSavedNetwork.ssid,
	sizeof(mSavedNetwork.ssid), &ssidLen);
	SuccessOrExit(err);

	mSavedNetwork.credentialsLen = credentialsLen;
	mSavedNetwork.ssidLen = ssidLen;

	mStagingNetwork = mSavedNetwork;
	mScanSpecific = false;

	exit:
	if (err == CHIP_ERROR_PERSISTED_STORAGE_VALUE_NOT_FOUND)
	{
	/** Not commissioned, SSID and Network Password not found. */
	return CHIP_NO_ERROR;
	}

	return err;
	}

	void BLWiFiDriver::Shutdown()
	{
	mpStatusChangeCallback = nullptr;
	mScanSpecific = false;
	memset(mScanSSID, 0, sizeof(mScanSSID));
	}

	CHIP_ERROR BLWiFiDriver::CommitConfiguration()
	{
	ChipLogProgress(NetworkProvisioning, "BLWiFiDriver::CommitConfiguration");
	ReturnErrorOnFailure(
	PersistedStorage::KeyValueStoreMgr().Put(BLConfig::kConfigKey_WiFiSSID, mStagingNetwork.ssid, mStagingNetwork.ssidLen));
	ReturnErrorOnFailure(PersistedStorage::KeyValueStoreMgr().Put(BLConfig::kConfigKey_WiFiPassword, mStagingNetwork.credentials,
	mStagingNetwork.credentialsLen));
	mSavedNetwork = mStagingNetwork;
	return CHIP_NO_ERROR;
	}

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

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

	Status BLWiFiDriver::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);

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

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

	return Status::kSuccess;
	}

	Status BLWiFiDriver::RemoveNetwork(ByteSpan networkId, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
	{
	outDebugText.reduce_size(0);
	outNetworkIndex = 0;

	VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);

	mStagingNetwork.ssidLen = 0;
	return Status::kSuccess;
	}

	Status BLWiFiDriver::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 BLWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
	{
	ChipLogProgress(NetworkProvisioning, "ConnectWiFiNetwork");
	// Valid Credentials length are:
	// - 0 bytes: Unsecured (open) connection
	// - 5 bytes: WEP-64 passphrase
	// - 10 hexadecimal ASCII characters: WEP-64 40-bit hex raw PSK
	// - 13 bytes: WEP-128 passphrase
	// - 26 hexadecimal ASCII characters: WEP-128 104-bit hex raw PSK
	// - 8..63 bytes: WPA/WPA2/WPA3 passphrase
	// - 64 bytes: WPA/WPA2/WPA3 raw hex PSK
	// Note 10 hex WEP64 and 13 bytes / 26 hex WEP128 passphrase are covered by 8~63 bytes WPA passphrase, so we don't check WEP64
	// hex and WEP128 passphrase.
	if (keyLen == BLWiFiDriver::WiFiCredentialLength::kOpen \|\| keyLen == BLWiFiDriver::WiFiCredentialLength::kWEP64 \|\|
	(keyLen >= BLWiFiDriver::WiFiCredentialLength::kMinWPAPSK && keyLen <= BLWiFiDriver::WiFiCredentialLength::kMaxWPAPSK))
	{
	wifiInterface_disconnect();
	vTaskDelay(500);
	if (keyLen == BLWiFiDriver::WiFiCredentialLength::kOpen)
	{
	wifiInterface_connect((char *) ssid, NULL);
	}
	else
	{
	wifiInterface_connect((char ) ssid, (char ) key);
	}
	}
	else
	{
	return CHIP_ERROR_INVALID_STRING_LENGTH;
	}
	ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManager::kWiFiStationState_Connecting);
	return CHIP_NO_ERROR;
	}

	void BLWiFiDriver::OnConnectWiFiNetwork(bool isConnected)
	{
	ChipLogProgress(NetworkProvisioning, "BLWiFiDriver::OnConnectWiFiNetwork, isConnected=%d\r\n", isConnected);
	if (mpConnectCallback)
	{
	if (isConnected)
	{
	mpConnectCallback->OnResult(Status::kSuccess, CharSpan(), 0);
	}
	else
	{
	mpConnectCallback->OnResult(Status::kUnknownError, CharSpan(), 0);
	}
	mpConnectCallback = nullptr;
	}
	}

	void BLWiFiDriver::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, "BL NetworkCommissioningDelegate: SSID: %.*s", static_cast<int>(networkId.size()),
	networkId.data());

	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);
	}
	}

	void BLWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
	{
	if (callback != nullptr)
	{
	ChipLogError(NetworkProvisioning, "ssid.data(): %s", ssid.data());

	if (ssid.data())
	{
	memset(mScanSSID, 0, sizeof(mScanSSID));
	memcpy(mScanSSID, ssid.data(), ssid.size());
	mScanSpecific = true;
	}
	mpScanCallback = callback;
	wifiInterface_startScan();
	}
	}

	void BLWiFiDriver::OnScanWiFiNetworkDone(void * opaque)
	{
	netbus_wifi_mgmr_msg_cmd_t * pkg_data = (netbus_wifi_mgmr_msg_cmd_t ) ((struct pkg_protocol ) opaque)->payload;
	netbus_fs_scan_ind_cmd_msg_t * pmsg = (netbus_fs_scan_ind_cmd_msg_t ) ((netbus_fs_scan_ind_cmd_msg_t ) pkg_data);

	size_t i = 0, ap_num = 0;
	WiFiScanResponse pScanResponse, p;

	for (i = 0; i < pmsg->num; i++)
	{
	ChipLogProgress(DeviceLayer, "OnScanWiFiNetworkDone %s", pmsg->records[i].ssid);
	if (mScanSpecific && !strcmp(mScanSSID, (char *) (pmsg->records[i].ssid)))
	{
	ap_num = 1;
	break;
	}
	}

	if (0 == pmsg->num \|\| (mScanSpecific && 0 == ap_num))
	{
	ChipLogProgress(DeviceLayer, "No AP found");
	if (mpScanCallback != nullptr)
	{
	mpScanCallback->OnFinished(Status::kSuccess, CharSpan(), nullptr);
	mpScanCallback = nullptr;
	}
	return;
	}

	if (ap_num)
	{
	p = pScanResponse = (WiFiScanResponse ) malloc(sizeof(WiFiScanResponse) ap_num);
	}
	else
	{
	p = pScanResponse = (WiFiScanResponse ) malloc(sizeof(WiFiScanResponse) pmsg->num);
	ap_num = pmsg->num;
	}
	for (i = 0; i < pmsg->num; i++)
	{
	if (mScanSpecific && strcmp(mScanSSID, (char *) (pmsg->records[i].ssid)))
	{
	continue;
	}

	p->security.SetRaw(pmsg->records[i].auth_mode);
	p->ssidLen = strlen((char *) pmsg->records[i].ssid) < chip::DeviceLayer::Internal::kMaxWiFiSSIDLength
	? strlen((char *) pmsg->records[i].ssid)
	: chip::DeviceLayer::Internal::kMaxWiFiSSIDLength;
	p->channel = pmsg->records[i].channel;
	p->wiFiBand = chip::DeviceLayer::NetworkCommissioning::WiFiBand::k2g4;
	p->rssi = pmsg->records[i].rssi;
	memcpy(p->ssid, pmsg->records[i].ssid, p->ssidLen);
	memcpy(p->bssid, pmsg->records[i].bssid, 6);

	if (mScanSpecific)
	{
	break;
	}

	p++;
	}

	if (CHIP_NO_ERROR == DeviceLayer::SystemLayer().ScheduleLambda([ap_num, pScanResponse]() {
	BLScanResponseIterator iter(ap_num, pScanResponse);
	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");
	}

	free(pScanResponse);
	}

	CHIP_ERROR GetConfiguredNetwork(Network & network)
	{
	struct bflbwifi_ap_record * pApInfo = wifiInterface_getApInfo();

	if (NULL == pApInfo)
	{
	return CHIP_ERROR_INTERNAL;
	}

	ChipLogProgress(DeviceLayer, "GetConfiguredNetwork [%s]", pApInfo->ssid);

	uint8_t length = strnlen(reinterpret_cast<const char *>(pApInfo->ssid), DeviceLayer::Internal::kMaxWiFiSSIDLength);
	if (length > sizeof(network.networkID))
	{
	ChipLogError(DeviceLayer, "SSID too long");
	return CHIP_ERROR_INTERNAL;
	}

	memcpy(network.networkID, pApInfo->ssid, length);
	network.networkIDLen = length;
	return CHIP_NO_ERROR;
	}

	void BLWiFiDriver::OnNetworkStatusChange()
	{
	Network configuredNetwork;
	bool staConnected = false;

	ChipLogProgress(DeviceLayer, "OnNetworkStatusChange");

	VerifyOrReturn(mpStatusChangeCallback != nullptr);

	if (CHIP_NO_ERROR != GetConfiguredNetwork(configuredNetwork))
	{
	ChipLogError(DeviceLayer, "Failed to get configured network when updating network status.");
	return;
	}

	if (ConnectivityMgrImpl().GetWiFiStationState() == ConnectivityManager::kWiFiStationState_Connected)
	{
	ChipLogProgress(DeviceLayer, "OnNetworkStatusChange kWiFiStationState_Connected, %s", configuredNetwork.networkID);
	staConnected = true;
	}

	if (staConnected)
	{
	mpStatusChangeCallback->OnNetworkingStatusChange(
	Status::kSuccess, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)), NullOptional);
	return;
	}
	mpStatusChangeCallback->OnNetworkingStatusChange(
	Status::kUnknownError, MakeOptional(ByteSpan(configuredNetwork.networkID, configuredNetwork.networkIDLen)), NullOptional);
	}

	CHIP_ERROR BLWiFiDriver::SetLastDisconnectReason(const ChipDeviceEvent * event)
	{
	// TODO: to be added
	mLastDisconnectedReason = 0;

	return CHIP_NO_ERROR;
	}

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

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

	bool BLWiFiDriver::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 configuredNetwork;
	CHIP_ERROR err = GetConfiguredNetwork(configuredNetwork);
	if (err == CHIP_NO_ERROR)
	{
	if (ConnectivityMgrImpl()._IsWiFiStationConnected() && configuredNetwork.networkIDLen == item.networkIDLen &&
	memcmp(configuredNetwork.networkID, item.networkID, item.networkIDLen) == 0)
	{
	item.connected = true;
	}
	}

	return true;
	}

	void NetworkEventHandler(const ChipDeviceEvent * event, intptr_t arg)
	{
	if (!(DeviceEventType::IsPlatformSpecific(event->Type) && DeviceEventType::IsPublic(event->Type)))
	{
	return;
	}

	switch (event->Type)
	{
	case kWiFiOnInitDone:
	break;
	case kWiFiOnConnected:
	BLWiFiDriver::GetInstance().OnNetworkStatusChange();
	break;
	case kGotIpAddress:
	ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManagerImpl::kWiFiStationState_Connected);
	ConnectivityMgrImpl().OnConnectivityChanged(deviceInterface_getNetif());
	break;
	case kGotIpv6Address:
	ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManagerImpl::kWiFiStationState_Connected);
	ConnectivityMgrImpl().OnConnectivityChanged(deviceInterface_getNetif());
	break;
	case kWiFiOnDisconnected:
	if (ConnectivityManager::kWiFiStationState_Connecting == ConnectivityMgrImpl().GetWiFiStationState())
	{
	ConnectivityMgrImpl().ChangeWiFiStationState(ConnectivityManager::kWiFiStationState_Connecting_Failed);
	}
	break;
	default:
	ChipLogProgress(DeviceLayer, "Undefined network commission event type %x.\r\n", event->Type);
	break;
	}
	}

	extern "C" void wifi_event_handler(uint32_t code)
	{
	ChipDeviceEvent event;

	memset(&event, 0, sizeof(ChipDeviceEvent));
	switch (code)
	{
	case VIRT_NET_EV_ON_CONNECTED:
	event.Type = kWiFiOnConnected;
	PlatformMgr().PostEventOrDie(&event);
	break;
	case VIRT_NET_EV_ON_GOT_IP:
	event.Type = kGotIpAddress;
	PlatformMgr().PostEventOrDie(&event);
	break;
	case VIRT_NET_EV_ON_DISCONNECT:
	event.Type = kWiFiOnDisconnected;
	PlatformMgr().PostEventOrDie(&event);
	break;
	default:
	ChipLogProgress(DeviceLayer, "[APP] [EVT] Unknown code %lu \r\n", code);
	}
	}

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