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ConnectivityManagerImpl_WiFi.cpp
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/*
*
* Copyright (c) 2020-2021 Project CHIP Authors
* Copyright (c) 2018 Nest Labs, Inc.
* 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.
*/
/* this file behaves like a config.h, comes first */
#include <platform/internal/CHIPDeviceLayerInternal.h>
#include <platform/CommissionableDataProvider.h>
#include <platform/ConnectivityManager.h>
#include <lib/support/CodeUtils.h>
#include <lib/support/logging/CHIPLogging.h>
#include <platform/DeviceInstanceInfoProvider.h>
#include <platform/DiagnosticDataProvider.h>
#include <platform/ESP32/ESP32EndpointQueueFilter.h>
#include <platform/ESP32/ESP32Utils.h>
#include <platform/ESP32/NetworkCommissioningDriver.h>
#include <platform/ESP32/route_hook/ESP32RouteHook.h>
#include <platform/internal/BLEManager.h>
#include "esp_event.h"
#include "esp_netif.h"
#include "esp_wifi.h"
#include <lwip/dns.h>
#include <lwip/ip_addr.h>
#include <lwip/nd6.h>
#include <lwip/netif.h>
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI
using namespace ::chip;
using namespace ::chip::Inet;
using namespace ::chip::System;
using namespace ::chip::TLV;
using chip::DeviceLayer::Internal::ESP32Utils;
namespace chip {
namespace DeviceLayer {
ConnectivityManager::WiFiStationMode ConnectivityManagerImpl::_GetWiFiStationMode(void)
{
if (mWiFiStationMode != kWiFiStationMode_ApplicationControlled)
{
wifi_mode_t curWiFiMode;
mWiFiStationMode =
(esp_wifi_get_mode(&curWiFiMode) == ESP_OK && (curWiFiMode == WIFI_MODE_APSTA || curWiFiMode == WIFI_MODE_STA))
? kWiFiStationMode_Enabled
: kWiFiStationMode_Disabled;
}
return mWiFiStationMode;
}
bool ConnectivityManagerImpl::_IsWiFiStationEnabled(void)
{
return GetWiFiStationMode() == kWiFiStationMode_Enabled;
}
CHIP_ERROR ConnectivityManagerImpl::_SetWiFiStationMode(WiFiStationMode val)
{
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(val != kWiFiStationMode_NotSupported, err = CHIP_ERROR_INVALID_ARGUMENT);
if (val != kWiFiStationMode_ApplicationControlled)
{
bool autoConnect = (val == kWiFiStationMode_Enabled);
err = Internal::ESP32Utils::SetAPMode(autoConnect);
SuccessOrExit(err);
DeviceLayer::SystemLayer().ScheduleWork(DriveStationState, NULL);
}
if (mWiFiStationMode != val)
{
ChipLogProgress(DeviceLayer, "WiFi station mode change: %s -> %s", WiFiStationModeToStr(mWiFiStationMode),
WiFiStationModeToStr(val));
}
mWiFiStationMode = val;
exit:
return err;
}
bool ConnectivityManagerImpl::_IsWiFiStationProvisioned(void)
{
return Internal::ESP32Utils::IsStationProvisioned();
}
void ConnectivityManagerImpl::_ClearWiFiStationProvision(void)
{
if (mWiFiStationMode != kWiFiStationMode_ApplicationControlled)
{
CHIP_ERROR error = chip::DeviceLayer::Internal::ESP32Utils::ClearWiFiStationProvision();
if (error != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "ClearWiFiStationProvision failed: %s", chip::ErrorStr(error));
return;
}
DeviceLayer::SystemLayer().ScheduleWork(DriveStationState, NULL);
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
}
}
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
CHIP_ERROR ConnectivityManagerImpl::_SetWiFiAPMode(WiFiAPMode val)
{
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(val != kWiFiAPMode_NotSupported, err = CHIP_ERROR_INVALID_ARGUMENT);
if (mWiFiAPMode != val)
{
ChipLogProgress(DeviceLayer, "WiFi AP mode change: %s -> %s", WiFiAPModeToStr(mWiFiAPMode), WiFiAPModeToStr(val));
}
mWiFiAPMode = val;
DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
exit:
return err;
}
void ConnectivityManagerImpl::_DemandStartWiFiAP(void)
{
if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
{
mLastAPDemandTime = System::SystemClock().GetMonotonicTimestamp();
DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
}
}
void ConnectivityManagerImpl::_StopOnDemandWiFiAP(void)
{
if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
{
mLastAPDemandTime = System::Clock::kZero;
DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
}
}
void ConnectivityManagerImpl::_MaintainOnDemandWiFiAP(void)
{
if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
{
if (mWiFiAPState == kWiFiAPState_Activating || mWiFiAPState == kWiFiAPState_Active)
{
mLastAPDemandTime = System::SystemClock().GetMonotonicTimestamp();
}
}
}
void ConnectivityManagerImpl::_SetWiFiAPIdleTimeout(System::Clock::Timeout val)
{
mWiFiAPIdleTimeout = val;
DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
}
#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
#define WIFI_BAND_2_4GHZ 2400
#define WIFI_BAND_5_0GHZ 5000
static uint16_t Map2400MHz(const uint8_t inChannel)
{
uint16_t frequency = 0;
if (inChannel >= 1 && inChannel <= 13)
{
// Cast is OK because we definitely fit in 16 bits.
frequency = static_cast<uint16_t>(2412 + ((inChannel - 1) * 5));
}
else if (inChannel == 14)
{
frequency = 2484;
}
return frequency;
}
static uint16_t Map5000MHz(const uint8_t inChannel)
{
uint16_t frequency = 0;
switch (inChannel)
{
case 183:
frequency = 4915;
break;
case 184:
frequency = 4920;
break;
case 185:
frequency = 4925;
break;
case 187:
frequency = 4935;
break;
case 188:
frequency = 4940;
break;
case 189:
frequency = 4945;
break;
case 192:
frequency = 4960;
break;
case 196:
frequency = 4980;
break;
case 7:
frequency = 5035;
break;
case 8:
frequency = 5040;
break;
case 9:
frequency = 5045;
break;
case 11:
frequency = 5055;
break;
case 12:
frequency = 5060;
break;
case 16:
frequency = 5080;
break;
case 34:
frequency = 5170;
break;
case 36:
frequency = 5180;
break;
case 38:
frequency = 5190;
break;
case 40:
frequency = 5200;
break;
case 42:
frequency = 5210;
break;
case 44:
frequency = 5220;
break;
case 46:
frequency = 5230;
break;
case 48:
frequency = 5240;
break;
case 52:
frequency = 5260;
break;
case 56:
frequency = 5280;
break;
case 60:
frequency = 5300;
break;
case 64:
frequency = 5320;
break;
case 100:
frequency = 5500;
break;
case 104:
frequency = 5520;
break;
case 108:
frequency = 5540;
break;
case 112:
frequency = 5560;
break;
case 116:
frequency = 5580;
break;
case 120:
frequency = 5600;
break;
case 124:
frequency = 5620;
break;
case 128:
frequency = 5640;
break;
case 132:
frequency = 5660;
break;
case 136:
frequency = 5680;
break;
case 140:
frequency = 5700;
break;
case 149:
frequency = 5745;
break;
case 153:
frequency = 5765;
break;
case 157:
frequency = 5785;
break;
case 161:
frequency = 5805;
break;
case 165:
frequency = 5825;
break;
}
return frequency;
}
static uint16_t MapFrequency(const uint16_t inBand, const uint8_t inChannel)
{
uint16_t frequency = 0;
if (inBand == WIFI_BAND_2_4GHZ)
{
frequency = Map2400MHz(inChannel);
}
else if (inBand == WIFI_BAND_5_0GHZ)
{
frequency = Map5000MHz(inChannel);
}
return frequency;
}
CHIP_ERROR ConnectivityManagerImpl::_GetAndLogWiFiStatsCounters(void)
{
esp_err_t err;
wifi_config_t wifiConfig;
uint8_t primaryChannel;
wifi_second_chan_t secondChannel;
uint16_t freq;
uint16_t bssid;
IgnoreUnusedVariable(freq);
IgnoreUnusedVariable(bssid);
err = esp_wifi_get_config(WIFI_IF_STA, &wifiConfig);
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_wifi_get_config() failed: %s", esp_err_to_name(err));
return ESP32Utils::MapError(err);
}
err = esp_wifi_get_channel(&primaryChannel, &secondChannel);
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_wifi_get_channel() failed: %s", esp_err_to_name(err));
return ESP32Utils::MapError(err);
}
freq = MapFrequency(WIFI_BAND_2_4GHZ, primaryChannel);
static_assert(std::is_same<std::remove_reference<decltype(wifiConfig.sta.bssid[5])>::type, uint8_t>::value,
"Our bits are going to start overlapping");
bssid = static_cast<uint16_t>((wifiConfig.sta.bssid[4] << 8) | wifiConfig.sta.bssid[5]);
ChipLogProgress(DeviceLayer,
"WiFi-Telemetry\n"
"BSSID: %x\n"
"freq: %d\n",
bssid, freq);
return CHIP_NO_ERROR;
}
CHIP_ERROR ConnectivityManagerImpl::InitWiFi()
{
mLastStationConnectFailTime = System::Clock::kZero;
mWiFiStationMode = kWiFiStationMode_Disabled;
mWiFiStationState = kWiFiStationState_NotConnected;
mWiFiStationReconnectInterval = System::Clock::Milliseconds32(CHIP_DEVICE_CONFIG_WIFI_STATION_RECONNECT_INTERVAL);
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
mLastAPDemandTime = System::Clock::kZero;
mWiFiAPMode = kWiFiAPMode_Disabled;
mWiFiAPState = kWiFiAPState_NotActive;
mWiFiAPIdleTimeout = System::Clock::Milliseconds32(CHIP_DEVICE_CONFIG_WIFI_AP_IDLE_TIMEOUT);
#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
mFlags.SetRaw(0);
// TODO Initialize the Chip Addressing and Routing Module.
// Ensure that ESP station mode is enabled.
ReturnErrorOnFailure(Internal::ESP32Utils::EnableStationMode());
// If there is no persistent station provision...
if (!IsWiFiStationProvisioned())
{
// If the code has been compiled with a default WiFi station provision, configure that now.
if (CONFIG_DEFAULT_WIFI_SSID[0] != 0)
{
ChipLogProgress(DeviceLayer, "Setting default WiFi station configuration (SSID: %s)", CONFIG_DEFAULT_WIFI_SSID);
// Set a default station configuration.
wifi_config_t wifiConfig;
memset(&wifiConfig, 0, sizeof(wifiConfig));
memcpy(wifiConfig.sta.ssid, CONFIG_DEFAULT_WIFI_SSID,
std::min(sizeof(wifiConfig.sta.ssid), strlen(CONFIG_DEFAULT_WIFI_SSID)));
memcpy(wifiConfig.sta.password, CONFIG_DEFAULT_WIFI_PASSWORD,
std::min(sizeof(wifiConfig.sta.password), strlen(CONFIG_DEFAULT_WIFI_PASSWORD)));
wifiConfig.sta.scan_method = WIFI_ALL_CHANNEL_SCAN;
wifiConfig.sta.sort_method = WIFI_CONNECT_AP_BY_SIGNAL;
esp_err_t err = esp_wifi_set_config(WIFI_IF_STA, &wifiConfig);
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_wifi_set_config() failed: %s", esp_err_to_name(err));
}
// Enable WiFi station mode.
ReturnErrorOnFailure(SetWiFiStationMode(kWiFiStationMode_Enabled));
}
// Otherwise, ensure WiFi station mode is disabled.
else
{
ReturnErrorOnFailure(SetWiFiStationMode(kWiFiStationMode_Disabled));
}
}
// Force AP mode off for now.
ReturnErrorOnFailure(Internal::ESP32Utils::SetAPMode(false));
// Queue work items to bootstrap the AP and station state machines once the Chip event loop is running.
ReturnErrorOnFailure(DeviceLayer::SystemLayer().ScheduleWork(DriveStationState, NULL));
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
ReturnErrorOnFailure(DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL));
#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
return CHIP_NO_ERROR;
}
void ConnectivityManagerImpl::OnWiFiPlatformEvent(const ChipDeviceEvent * event)
{
// Handle ESP system events...
if (event->Type == DeviceEventType::kESPSystemEvent)
{
if (event->Platform.ESPSystemEvent.Base == WIFI_EVENT)
{
switch (event->Platform.ESPSystemEvent.Id)
{
case WIFI_EVENT_SCAN_DONE:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_SCAN_DONE");
NetworkCommissioning::ESPWiFiDriver::GetInstance().OnScanWiFiNetworkDone();
break;
case WIFI_EVENT_STA_START:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_STA_START");
DriveStationState();
break;
case WIFI_EVENT_STA_CONNECTED:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_STA_CONNECTED");
if (mWiFiStationState == kWiFiStationState_Connecting)
{
ChangeWiFiStationState(kWiFiStationState_Connecting_Succeeded);
}
DriveStationState();
break;
case WIFI_EVENT_STA_DISCONNECTED:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_STA_DISCONNECTED");
NetworkCommissioning::ESPWiFiDriver::GetInstance().SetLastDisconnectReason(event);
if (mWiFiStationState == kWiFiStationState_Connecting)
{
ChangeWiFiStationState(kWiFiStationState_Connecting_Failed);
}
DriveStationState();
break;
case WIFI_EVENT_STA_STOP:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_STA_STOP");
DriveStationState();
break;
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
case WIFI_EVENT_AP_START:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_AP_START");
ChangeWiFiAPState(kWiFiAPState_Active);
DriveAPState();
break;
case WIFI_EVENT_AP_STOP:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_AP_STOP");
ChangeWiFiAPState(kWiFiAPState_NotActive);
DriveAPState();
break;
case WIFI_EVENT_AP_STACONNECTED:
ChipLogProgress(DeviceLayer, "WIFI_EVENT_AP_STACONNECTED");
MaintainOnDemandWiFiAP();
break;
#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
default:
break;
}
}
if (event->Platform.ESPSystemEvent.Base == IP_EVENT)
{
switch (event->Platform.ESPSystemEvent.Id)
{
case IP_EVENT_STA_GOT_IP:
ChipLogProgress(DeviceLayer, "IP_EVENT_STA_GOT_IP");
OnStationIPv4AddressAvailable(event->Platform.ESPSystemEvent.Data.IpGotIp);
break;
case IP_EVENT_STA_LOST_IP:
ChipLogProgress(DeviceLayer, "IP_EVENT_STA_LOST_IP");
OnStationIPv4AddressLost();
break;
case IP_EVENT_GOT_IP6:
ChipLogProgress(DeviceLayer, "IP_EVENT_GOT_IP6");
if (strcmp(esp_netif_get_ifkey(event->Platform.ESPSystemEvent.Data.IpGotIp6.esp_netif),
ESP32Utils::kDefaultWiFiStationNetifKey) == 0)
{
OnStationIPv6AddressAvailable(event->Platform.ESPSystemEvent.Data.IpGotIp6);
}
break;
default:
break;
}
}
}
}
void ConnectivityManagerImpl::_OnWiFiScanDone()
{
// Schedule a call to DriveStationState method in case a station connect attempt was
// deferred because the scan was in progress.
DeviceLayer::SystemLayer().ScheduleWork(DriveStationState, NULL);
}
void ConnectivityManagerImpl::_OnWiFiStationProvisionChange()
{
// Schedule a call to the DriveStationState method to adjust the station state as needed.
DeviceLayer::SystemLayer().ScheduleWork(DriveStationState, NULL);
}
void ConnectivityManagerImpl::DriveStationState()
{
bool stationConnected;
// Refresh the current station mode. Specifically, this reads the ESP auto_connect flag,
// which determine whether the WiFi station mode is kWiFiStationMode_Enabled or
// kWiFiStationMode_Disabled.
GetWiFiStationMode();
// If the station interface is NOT under application control...
if (mWiFiStationMode != kWiFiStationMode_ApplicationControlled)
{
// Ensure that the ESP WiFi layer is started.
ReturnOnFailure(Internal::ESP32Utils::StartWiFiLayer());
// Ensure that station mode is enabled in the ESP WiFi layer.
ReturnOnFailure(Internal::ESP32Utils::EnableStationMode());
}
// Determine if the ESP WiFi layer thinks the station interface is currently connected.
ReturnOnFailure(Internal::ESP32Utils::IsStationConnected(stationConnected));
// If the station interface is currently connected ...
if (stationConnected)
{
// Advance the station state to Connected if it was previously NotConnected or
// a previously initiated connect attempt succeeded.
if (mWiFiStationState == kWiFiStationState_NotConnected || mWiFiStationState == kWiFiStationState_Connecting_Succeeded)
{
ChangeWiFiStationState(kWiFiStationState_Connected);
ChipLogProgress(DeviceLayer, "WiFi station interface connected");
mLastStationConnectFailTime = System::Clock::kZero;
OnStationConnected();
}
// If the WiFi station interface is no longer enabled, or no longer provisioned,
// disconnect the station from the AP, unless the WiFi station mode is currently
// under application control.
if (mWiFiStationMode != kWiFiStationMode_ApplicationControlled &&
(mWiFiStationMode != kWiFiStationMode_Enabled || !IsWiFiStationProvisioned()))
{
ChipLogProgress(DeviceLayer, "Disconnecting WiFi station interface");
esp_err_t err = esp_wifi_disconnect();
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_wifi_disconnect() failed: %s", esp_err_to_name(err));
return;
}
ChangeWiFiStationState(kWiFiStationState_Disconnecting);
}
}
// Otherwise the station interface is NOT connected to an AP, so...
else
{
System::Clock::Timestamp now = System::SystemClock().GetMonotonicTimestamp();
// Advance the station state to NotConnected if it was previously Connected or Disconnecting,
// or if a previous initiated connect attempt failed.
if (mWiFiStationState == kWiFiStationState_Connected || mWiFiStationState == kWiFiStationState_Disconnecting ||
mWiFiStationState == kWiFiStationState_Connecting_Failed)
{
WiFiStationState prevState = mWiFiStationState;
ChangeWiFiStationState(kWiFiStationState_NotConnected);
if (prevState != kWiFiStationState_Connecting_Failed)
{
ChipLogProgress(DeviceLayer, "WiFi station interface disconnected");
mLastStationConnectFailTime = System::Clock::kZero;
OnStationDisconnected();
}
else
{
mLastStationConnectFailTime = now;
}
}
// If the WiFi station interface is now enabled and provisioned (and by implication,
// not presently under application control), AND the system is not in the process of
// scanning, then...
if (mWiFiStationMode == kWiFiStationMode_Enabled && IsWiFiStationProvisioned())
{
// Initiate a connection to the AP if we haven't done so before, or if enough
// time has passed since the last attempt.
if (mLastStationConnectFailTime == System::Clock::kZero ||
now >= mLastStationConnectFailTime + mWiFiStationReconnectInterval)
{
ChipLogProgress(DeviceLayer, "Attempting to connect WiFi station interface");
esp_err_t err = esp_wifi_connect();
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_wifi_connect() failed: %s", esp_err_to_name(err));
return;
}
ChangeWiFiStationState(kWiFiStationState_Connecting);
}
// Otherwise arrange another connection attempt at a suitable point in the future.
else
{
System::Clock::Timeout timeToNextConnect = (mLastStationConnectFailTime + mWiFiStationReconnectInterval) - now;
ChipLogProgress(DeviceLayer, "Next WiFi station reconnect in %" PRIu32 " ms",
System::Clock::Milliseconds32(timeToNextConnect).count());
ReturnOnFailure(DeviceLayer::SystemLayer().StartTimer(timeToNextConnect, DriveStationState, NULL));
}
}
}
ChipLogProgress(DeviceLayer, "Done driving station state, nothing else to do...");
// Kick-off any pending network scan that might have been deferred due to the activity
// of the WiFi station.
}
void ConnectivityManagerImpl::OnStationConnected()
{
// Assign an IPv6 link local address to the station interface.
esp_err_t err = esp_netif_create_ip6_linklocal(esp_netif_get_handle_from_ifkey(ESP32Utils::kDefaultWiFiStationNetifKey));
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_netif_create_ip6_linklocal() failed for %s interface, err:%s",
ESP32Utils::kDefaultWiFiStationNetifKey, esp_err_to_name(err));
}
NetworkCommissioning::ESPWiFiDriver::GetInstance().OnConnectWiFiNetwork();
// TODO Invoke WARM to perform actions that occur when the WiFi station interface comes up.
// Alert other components of the new state.
ChipDeviceEvent event;
event.Type = DeviceEventType::kWiFiConnectivityChange;
event.WiFiConnectivityChange.Result = kConnectivity_Established;
PlatformMgr().PostEventOrDie(&event);
WiFiDiagnosticsDelegate * delegate = GetDiagnosticDataProvider().GetWiFiDiagnosticsDelegate();
if (delegate)
{
delegate->OnConnectionStatusChanged(
chip::to_underlying(chip::app::Clusters::WiFiNetworkDiagnostics::ConnectionStatusEnum::kConnected));
}
UpdateInternetConnectivityState();
}
void ConnectivityManagerImpl::OnStationDisconnected()
{
// TODO Invoke WARM to perform actions that occur when the WiFi station interface goes down.
// Alert other components of the new state.
ChipDeviceEvent event;
event.Type = DeviceEventType::kWiFiConnectivityChange;
event.WiFiConnectivityChange.Result = kConnectivity_Lost;
PlatformMgr().PostEventOrDie(&event);
WiFiDiagnosticsDelegate * delegate = GetDiagnosticDataProvider().GetWiFiDiagnosticsDelegate();
uint16_t reason = NetworkCommissioning::ESPWiFiDriver::GetInstance().GetLastDisconnectReason();
uint8_t associationFailureCause =
chip::to_underlying(chip::app::Clusters::WiFiNetworkDiagnostics::AssociationFailureCauseEnum::kUnknown);
switch (reason)
{
case WIFI_REASON_ASSOC_TOOMANY:
case WIFI_REASON_NOT_ASSOCED:
case WIFI_REASON_ASSOC_NOT_AUTHED:
case WIFI_REASON_4WAY_HANDSHAKE_TIMEOUT:
case WIFI_REASON_GROUP_CIPHER_INVALID:
case WIFI_REASON_UNSUPP_RSN_IE_VERSION:
case WIFI_REASON_AKMP_INVALID:
case WIFI_REASON_CIPHER_SUITE_REJECTED:
case WIFI_REASON_PAIRWISE_CIPHER_INVALID:
associationFailureCause =
chip::to_underlying(chip::app::Clusters::WiFiNetworkDiagnostics::AssociationFailureCauseEnum::kAssociationFailed);
if (delegate)
{
delegate->OnAssociationFailureDetected(associationFailureCause, reason);
}
break;
case WIFI_REASON_NOT_AUTHED:
case WIFI_REASON_MIC_FAILURE:
case WIFI_REASON_IE_IN_4WAY_DIFFERS:
case WIFI_REASON_INVALID_RSN_IE_CAP:
case WIFI_REASON_INVALID_PMKID:
case WIFI_REASON_802_1X_AUTH_FAILED:
associationFailureCause =
chip::to_underlying(chip::app::Clusters::WiFiNetworkDiagnostics::AssociationFailureCauseEnum::kAuthenticationFailed);
if (delegate)
{
delegate->OnAssociationFailureDetected(associationFailureCause, reason);
}
break;
case WIFI_REASON_NO_AP_FOUND:
associationFailureCause =
chip::to_underlying(chip::app::Clusters::WiFiNetworkDiagnostics::AssociationFailureCauseEnum::kSsidNotFound);
if (delegate)
{
delegate->OnAssociationFailureDetected(associationFailureCause, reason);
}
case WIFI_REASON_BEACON_TIMEOUT:
case WIFI_REASON_AUTH_EXPIRE:
case WIFI_REASON_AUTH_LEAVE:
case WIFI_REASON_ASSOC_LEAVE:
case WIFI_REASON_ASSOC_EXPIRE:
break;
default:
if (delegate)
{
delegate->OnAssociationFailureDetected(associationFailureCause, reason);
}
break;
}
if (delegate)
{
delegate->OnDisconnectionDetected(reason);
delegate->OnConnectionStatusChanged(
chip::to_underlying(chip::app::Clusters::WiFiNetworkDiagnostics::ConnectionStatusEnum::kNotConnected));
}
UpdateInternetConnectivityState();
}
void ConnectivityManagerImpl::ChangeWiFiStationState(WiFiStationState newState)
{
if (mWiFiStationState != newState)
{
ChipLogProgress(DeviceLayer, "WiFi station state change: %s -> %s", WiFiStationStateToStr(mWiFiStationState),
WiFiStationStateToStr(newState));
mWiFiStationState = newState;
NetworkCommissioning::ESPWiFiDriver::GetInstance().OnNetworkStatusChange();
}
}
void ConnectivityManagerImpl::DriveStationState(::chip::System::Layer * aLayer, void * aAppState)
{
sInstance.DriveStationState();
}
#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
void ConnectivityManagerImpl::DriveAPState()
{
CHIP_ERROR err = CHIP_NO_ERROR;
WiFiAPState targetState;
bool espAPModeEnabled;
// Determine if AP mode is currently enabled in the ESP WiFi layer.
err = Internal::ESP32Utils::IsAPEnabled(espAPModeEnabled);
SuccessOrExit(err);
// Adjust the Connectivity Manager's AP state to match the state in the WiFi layer.
if (espAPModeEnabled && (mWiFiAPState == kWiFiAPState_NotActive || mWiFiAPState == kWiFiAPState_Deactivating))
{
ChangeWiFiAPState(kWiFiAPState_Activating);
}
if (!espAPModeEnabled && (mWiFiAPState == kWiFiAPState_Active || mWiFiAPState == kWiFiAPState_Activating))
{
ChangeWiFiAPState(kWiFiAPState_Deactivating);
}
// If the AP interface is not under application control...
if (mWiFiAPMode != kWiFiAPMode_ApplicationControlled)
{
// Ensure the ESP WiFi layer is started.
err = Internal::ESP32Utils::StartWiFiLayer();
SuccessOrExit(err);
// Determine the target (desired) state for AP interface...
// The target state is 'NotActive' if the application has expressly disabled the AP interface.
if (mWiFiAPMode == kWiFiAPMode_Disabled)
{
targetState = kWiFiAPState_NotActive;
}
// The target state is 'Active' if the application has expressly enabled the AP interface.
else if (mWiFiAPMode == kWiFiAPMode_Enabled)
{
targetState = kWiFiAPState_Active;
}
// The target state is 'Active' if the AP mode is 'On demand, when no station is available'
// and the station interface is not provisioned or the application has disabled the station
// interface.
else if (mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision &&
(!IsWiFiStationProvisioned() || GetWiFiStationMode() == kWiFiStationMode_Disabled))
{
targetState = kWiFiAPState_Active;
}
// The target state is 'Active' if the AP mode is one of the 'On demand' modes and there
// has been demand for the AP within the idle timeout period.
else if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
{
System::Clock::Timestamp now = System::SystemClock().GetMonotonicTimestamp();
if (mLastAPDemandTime != System::Clock::kZero && now < (mLastAPDemandTime + mWiFiAPIdleTimeout))
{
targetState = kWiFiAPState_Active;
// Compute the amount of idle time before the AP should be deactivated and
// arm a timer to fire at that time.
System::Clock::Timeout apTimeout = (mLastAPDemandTime + mWiFiAPIdleTimeout) - now;
err = DeviceLayer::SystemLayer().StartTimer(apTimeout, DriveAPState, NULL);
SuccessOrExit(err);
ChipLogProgress(DeviceLayer, "Next WiFi AP timeout in %" PRIu32 " ms",
System::Clock::Milliseconds32(apTimeout).count());
}
else
{
targetState = kWiFiAPState_NotActive;
}
}
// Otherwise the target state is 'NotActive'.
else
{
targetState = kWiFiAPState_NotActive;
}
// If the current AP state does not match the target state...
if (mWiFiAPState != targetState)
{
// If the target state is 'Active' and the current state is NOT 'Activating', enable
// and configure the AP interface, and then enter the 'Activating' state. Eventually
// a SYSTEM_EVENT_AP_START event will be received from the ESP WiFi layer which will
// cause the state to transition to 'Active'.
if (targetState == kWiFiAPState_Active)
{
if (mWiFiAPState != kWiFiAPState_Activating)
{
err = Internal::ESP32Utils::SetAPMode(true);
SuccessOrExit(err);
err = ConfigureWiFiAP();
SuccessOrExit(err);
ChangeWiFiAPState(kWiFiAPState_Activating);
}
}
// Otherwise, if the target state is 'NotActive' and the current state is not 'Deactivating',
// disable the AP interface and enter the 'Deactivating' state. Later a SYSTEM_EVENT_AP_STOP
// event will move the AP state to 'NotActive'.
else
{
if (mWiFiAPState != kWiFiAPState_Deactivating)
{
err = Internal::ESP32Utils::SetAPMode(false);
SuccessOrExit(err);
ChangeWiFiAPState(kWiFiAPState_Deactivating);
}
}
}
}
// If AP is active, but the interface doesn't have an IPv6 link-local
// address, assign one now.
if (mWiFiAPState == kWiFiAPState_Active && ESP32Utils::IsInterfaceUp(ESP32Utils::kDefaultWiFiAPNetifKey) &&
!ESP32Utils::HasIPv6LinkLocalAddress(ESP32Utils::kDefaultWiFiAPNetifKey))
{
esp_err_t error = esp_netif_create_ip6_linklocal(esp_netif_get_handle_from_ifkey(ESP32Utils::kDefaultWiFiAPNetifKey));
if (error != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_netif_create_ip6_linklocal() failed for %s interface, err:%s",
ESP32Utils::kDefaultWiFiAPNetifKey, esp_err_to_name(error));
goto exit;
}
}
exit:
if (err != CHIP_NO_ERROR && mWiFiAPMode != kWiFiAPMode_ApplicationControlled)
{
SetWiFiAPMode(kWiFiAPMode_Disabled);
Internal::ESP32Utils::SetAPMode(false);
}
}
CHIP_ERROR ConnectivityManagerImpl::ConfigureWiFiAP()
{
wifi_config_t wifiConfig;
memset(&wifiConfig, 0, sizeof(wifiConfig));
uint16_t discriminator;
ReturnErrorOnFailure(GetCommissionableDataProvider()->GetSetupDiscriminator(discriminator));
uint16_t vendorId;
uint16_t productId;
ReturnErrorOnFailure(GetDeviceInstanceInfoProvider()->GetVendorId(vendorId));
ReturnErrorOnFailure(GetDeviceInstanceInfoProvider()->GetProductId(productId));
snprintf((char *) wifiConfig.ap.ssid, sizeof(wifiConfig.ap.ssid), "%s%03X-%04X-%04X", CHIP_DEVICE_CONFIG_WIFI_AP_SSID_PREFIX,
discriminator, vendorId, productId);
wifiConfig.ap.channel = CHIP_DEVICE_CONFIG_WIFI_AP_CHANNEL;
wifiConfig.ap.authmode = WIFI_AUTH_OPEN;
wifiConfig.ap.max_connection = CHIP_DEVICE_CONFIG_WIFI_AP_MAX_STATIONS;
wifiConfig.ap.beacon_interval = CHIP_DEVICE_CONFIG_WIFI_AP_BEACON_INTERVAL;
ChipLogProgress(DeviceLayer, "Configuring WiFi AP: SSID %s, channel %u", wifiConfig.ap.ssid, wifiConfig.ap.channel);
esp_err_t err = esp_wifi_set_config(WIFI_IF_AP, &wifiConfig);
if (err != ESP_OK)
{
ChipLogError(DeviceLayer, "esp_wifi_set_config(WIFI_IF_AP) failed: %s", esp_err_to_name(err));
return ESP32Utils::MapError(err);
}
return CHIP_NO_ERROR;
}
void ConnectivityManagerImpl::ChangeWiFiAPState(WiFiAPState newState)
{
if (mWiFiAPState != newState)
{
ChipLogProgress(DeviceLayer, "WiFi AP state change: %s -> %s", WiFiAPStateToStr(mWiFiAPState), WiFiAPStateToStr(newState));
mWiFiAPState = newState;
}
}
void ConnectivityManagerImpl::DriveAPState(::chip::System::Layer * aLayer, void * aAppState)
{
sInstance.DriveAPState();
}
#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_AP
void ConnectivityManagerImpl::UpdateInternetConnectivityState(void)
{
bool haveIPv4Conn = false;
bool haveIPv6Conn = false;
const bool hadIPv4Conn = mFlags.Has(ConnectivityFlags::kHaveIPv4InternetConnectivity);
const bool hadIPv6Conn = mFlags.Has(ConnectivityFlags::kHaveIPv6InternetConnectivity);
IPAddress addr;
// If the WiFi station is currently in the connected state...
if (mWiFiStationState == kWiFiStationState_Connected)
{
// Get the LwIP netif for the WiFi station interface.
struct netif * netif = Internal::ESP32Utils::GetStationNetif();
// If the WiFi station interface is up...
if (netif != NULL && netif_is_up(netif) && netif_is_link_up(netif))
{
// Check if a DNS server is currently configured. If so...
ip_addr_t dnsServerAddr = *dns_getserver(0);
if (!ip_addr_isany_val(dnsServerAddr))
{
// If the station interface has been assigned an IPv4 address, and has