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NetworkCommissioningWiFiDriver.cpp
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NetworkCommissioningWiFiDriver.cpp
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/*
*
* Copyright (c) 2022 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/mt793x/MT793XConfig.h>
#include <platform/mt793x/NetworkCommissioningWiFiDriver.h>
#include <limits>
using namespace ::chip;
using namespace ::chip::DeviceLayer::Internal;
namespace chip {
namespace DeviceLayer {
namespace NetworkCommissioning {
namespace {
NetworkCommissioning::WiFiScanResponse * sScanResult;
GenioScanResponseIterator<NetworkCommissioning::WiFiScanResponse> mScanResponseIter(sScanResult);
} // namespace
CHIP_ERROR GenioWiFiDriver::Init(NetworkStatusChangeCallback * networkStatusChangeCallback)
{
CHIP_ERROR err;
size_t ssidLen = 0;
size_t credentialsLen = 0;
size_t outLen = 0;
mpScanCallback = nullptr;
mpConnectCallback = nullptr;
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::Init");
// If reading fails, wifi is not provisioned, no need to go further.
err = MT793XConfig::ReadConfigValueStr(MT793XConfig::kConfigKey_WiFiSSID, mSavedNetwork.ssid, sizeof(mSavedNetwork.ssid),
ssidLen);
VerifyOrReturnError(err == CHIP_NO_ERROR, CHIP_NO_ERROR);
err = MT793XConfig::ReadConfigValueStr(MT793XConfig::kConfigKey_WiFiPSK, mSavedNetwork.credentials,
sizeof(mSavedNetwork.credentials), credentialsLen);
VerifyOrReturnError(err == CHIP_NO_ERROR, CHIP_NO_ERROR);
err = MT793XConfig::ReadConfigValueBin(MT793XConfig::kConfigKey_WiFiSEC, &mSavedNetwork.auth_mode,
sizeof(mSavedNetwork.auth_mode), outLen);
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 GenioWiFiDriver::CommitConfiguration()
{
CHIP_ERROR err;
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::CommitConfiguration");
ReturnErrorOnFailure(MT793XConfig::WriteConfigValueStr(MT793XConfig::kConfigKey_WiFiSSID, mStagingNetwork.ssid));
ReturnErrorOnFailure(MT793XConfig::WriteConfigValueStr(MT793XConfig::kConfigKey_WiFiPSK, mStagingNetwork.credentials));
ReturnErrorOnFailure(MT793XConfig::WriteConfigValueBin(MT793XConfig::kConfigKey_WiFiSEC, &mStagingNetwork.auth_mode,
sizeof(mStagingNetwork.auth_mode)));
mSavedNetwork = mStagingNetwork;
return CHIP_NO_ERROR;
}
CHIP_ERROR GenioWiFiDriver::RevertConfiguration()
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::RevertConfiguration");
mStagingNetwork = mSavedNetwork;
return CHIP_NO_ERROR;
}
bool GenioWiFiDriver::NetworkMatch(const WiFiNetwork & network, ByteSpan networkId)
{
return networkId.size() == network.ssidLen && memcmp(networkId.data(), network.ssid, network.ssidLen) == 0;
}
Status GenioWiFiDriver::AddOrUpdateNetwork(ByteSpan ssid, ByteSpan credentials, MutableCharSpan & outDebugText,
uint8_t & outNetworkIndex)
{
outDebugText.reduce_size(0);
outNetworkIndex = 0;
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::AddOrUpdateNetwork");
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());
mStagingNetwork.auth_mode = WIFI_AUTH_MODE_WPA2_PSK;
return Status::kSuccess;
}
Status GenioWiFiDriver::RemoveNetwork(ByteSpan networkId, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
{
outDebugText.reduce_size(0);
outNetworkIndex = 0;
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::RemoveNetwork");
VerifyOrReturnError(NetworkMatch(mStagingNetwork, networkId), Status::kNetworkIDNotFound);
// Use empty ssid for representing invalid network
mStagingNetwork.ssidLen = 0;
return Status::kSuccess;
}
Status GenioWiFiDriver::ReorderNetwork(ByteSpan networkId, uint8_t index, MutableCharSpan & outDebugText)
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::ReorderNetwork");
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 GenioWiFiDriver::ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen)
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::ConnectWiFiNetwork");
ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Enabled));
// Set the wifi configuration
filogic_wifi_sta_prov_t wifi_prov = {};
memcpy(wifi_prov.ssid, ssid, ssidLen);
memcpy(wifi_prov.psk, key, keyLen);
wifi_prov.ssid_len = ssidLen;
wifi_prov.psk_len = keyLen;
wifi_prov.auth_mode = WIFI_AUTH_MODE_WPA2_PSK;
ChipLogProgress(NetworkProvisioning, "Setting up connection for WiFi SSID: %.*s", static_cast<int>(ssidLen), ssid);
void * filogicCtx = PlatformMgrImpl().mFilogicCtx;
// Configure the FILOGIC WiFi interface.
filogic_wifi_sta_prov_set_sync(filogicCtx, &wifi_prov);
ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Disabled));
ReturnErrorOnFailure(ConnectivityMgr().SetWiFiStationMode(ConnectivityManager::kWiFiStationMode_Enabled));
return CHIP_NO_ERROR;
}
void GenioWiFiDriver::OnConnectWiFiNetwork()
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::OnConnectWiFiNetwork");
if (mpConnectCallback)
{
CommitConfiguration();
mpConnectCallback->OnResult(Status::kSuccess, CharSpan(), 0);
mpConnectCallback = nullptr;
}
}
void GenioWiFiDriver::ConnectNetwork(ByteSpan networkId, ConnectCallback * callback)
{
CHIP_ERROR err = CHIP_NO_ERROR;
Status networkingStatus = Status::kUnknownError;
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::ConnectNetwork");
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<WiFiSecurityBitmap> GenioWiFiDriver::ConvertSecuritytype(wifi_auth_mode_t auth_mode)
{
chip::BitFlags<WiFiSecurityBitmap> securityType;
if (auth_mode == WIFI_AUTH_MODE_OPEN)
{
securityType = WiFiSecurity::kUnencrypted;
}
else if (auth_mode == WIFI_AUTH_MODE_WPA_PSK)
{
securityType = WiFiSecurity::kWpaPersonal;
}
else if (auth_mode == WIFI_AUTH_MODE_WPA2_PSK)
{
securityType = WiFiSecurity::kWpa2Personal;
}
else if (auth_mode == WIFI_AUTH_MODE_WPA3_PSK)
{
securityType = WiFiSecurity::kWpa3Personal;
}
else
{
securityType = WiFiSecurity::kUnencrypted;
}
return securityType;
}
bool GenioWiFiDriver::StartScanWiFiNetworks(ByteSpan ssid)
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::StartScanWiFiNetworks");
ChipLogProgress(DeviceLayer, "Start Scan WiFi Networks");
void * filogicCtx = PlatformMgrImpl().mFilogicCtx;
if (!ssid.empty()) // ssid is given, only scan this network
{
char cSsid[DeviceLayer::Internal::kMaxWiFiSSIDLength] = {};
memcpy(cSsid, ssid.data(), ssid.size());
filogic_wifi_scan(filogicCtx, (uint8_t *) cSsid, ssid.size(), kMaxWiFiScanAPs, OnScanWiFiNetworkDone);
}
else // scan all networks
{
filogic_wifi_scan(filogicCtx, nullptr, 0, kMaxWiFiScanAPs, OnScanWiFiNetworkDone);
}
return true;
}
void GenioWiFiDriver::OnScanWiFiNetworkDone(wifi_scan_list_item_t * aScanResult)
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::OnScanWiFiNetworkDone");
ChipLogProgress(DeviceLayer, "OnScanWiFiNetworkDone");
if (!aScanResult)
{
if (GetInstance().mpScanCallback != nullptr)
{
DeviceLayer::SystemLayer().ScheduleLambda([]() {
GetInstance().mpScanCallback->OnFinished(NetworkCommissioning::Status::kSuccess, CharSpan(), &mScanResponseIter);
GetInstance().mpScanCallback = nullptr;
});
}
}
else
{
while (aScanResult->is_valid)
{
NetworkCommissioning::WiFiScanResponse scanResponse = {};
chip::BitFlags<WiFiSecurityBitmap> security;
security = GetInstance().ConvertSecuritytype(aScanResult->auth_mode);
scanResponse.security.Set(security);
scanResponse.channel = aScanResult->channel;
scanResponse.rssi = aScanResult->rssi;
scanResponse.ssidLen = strnlen((char *) aScanResult->ssid, DeviceLayer::Internal::kMaxWiFiSSIDLength);
memcpy(scanResponse.ssid, aScanResult->ssid, scanResponse.ssidLen);
memcpy(scanResponse.bssid, aScanResult->bssid, sizeof(scanResponse.bssid));
mScanResponseIter.Add(&scanResponse);
aScanResult++; // process next result
}
}
}
void GenioWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callback)
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::ScanNetworks");
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)
{
ChipLogProgress(NetworkProvisioning, "GetConnectedNetwork");
void * filogicCtx = PlatformMgrImpl().mFilogicCtx;
filogic_wifi_sta_prov_t wifi_prov;
if (!filogic_wifi_sta_get_link_status_sync(filogicCtx) || !filogic_wifi_sta_prov_get_sync(filogicCtx, &wifi_prov))
{
return CHIP_ERROR_INCORRECT_STATE;
}
uint8_t length = strnlen(wifi_prov.ssid, DeviceLayer::Internal::kMaxWiFiSSIDLength);
if (length > sizeof(network.networkID))
{
ChipLogError(DeviceLayer, "SSID too long");
return CHIP_ERROR_INTERNAL;
}
memcpy(network.networkID, wifi_prov.ssid, length);
network.networkIDLen = length;
return CHIP_NO_ERROR;
}
size_t GenioWiFiDriver::WiFiNetworkIterator::Count()
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::WiFiNetworkIterator::Count");
return mDriver->mStagingNetwork.ssidLen == 0 ? 0 : 1;
}
bool GenioWiFiDriver::WiFiNetworkIterator::Next(Network & item)
{
ChipLogProgress(NetworkProvisioning, "GenioWiFiDriver::WiFiNetworkIterator::Next");
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