| /* |
| * |
| * 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; |
| |
| // 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; |
| |
| 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) |
| { |
| if (ConnectivityMgr().IsWiFiStationProvisioned()) |
| { |
| ChipLogProgress(DeviceLayer, "Disconecting for current wifi"); |
| int32_t status = wfx_sta_discon(); |
| if (status != 0) |
| { |
| 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_WPA_WPA2_MIXED; |
| |
| 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; |
| } |
| |
| 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(uint8_t security) |
| { |
| chip::BitFlags<WiFiSecurity> securityType; |
| if (security == WFX_SEC_NONE) |
| { |
| securityType = WiFiSecurity::kUnencrypted; |
| } |
| else if (security & WFX_SEC_WEP) |
| { |
| securityType = WiFiSecurity::kWepPersonal; |
| } |
| 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) |
| { |
| 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 |