rest_configuration.cpp

/*
 * Copyright (c) 2013-2019 dresden elektronik ingenieurtechnik gmbh.
 * All rights reserved.
 *
 * The software in this package is published under the terms of the BSD
 * style license a copy of which has been included with this distribution in
 * the LICENSE.txt file.
 *
 */

#include <QApplication>
#include <QCryptographicHash>
#include <QMessageAuthenticationCode>
#include <QDesktopServices>
#include <QFile>
#include <QString>
#include <QTcpSocket>
#include <QVariantMap>
#include <QNetworkInterface>
#include <QProcessEnvironment>
#include "daylight.h"
#include "de_web_plugin.h"
#include "de_web_plugin_private.h"
#include "json.h"
#include <stdlib.h>
#include <time.h>
#include <QProcess>
#include "gateway.h"
#ifdef Q_OS_LINUX
  #include <unistd.h>
  #include <sys/time.h>
#endif // Q_OS_LINUX

/*! Constructor. */
ApiConfig::ApiConfig() :
    Resource(RConfig)
{
}

/*! Init the configuration. */
void DeRestPluginPrivate::initConfig()
{
    QString dataPath = deCONZ::getStorageLocation(deCONZ::ApplicationsDataLocation);

    pollDatabaseWifiTimer = nullptr;

    // default configuration
    gwWifiLastUpdated = 0;
    gwRunFromShellScript = false;
    gwDeleteUnknownRules = (deCONZ::appArgumentNumeric("--delete-unknown-rules", 1) == 1) ? true : false;
    gwRfConnected = false; // will be detected later
    gwRfConnectedExpected = (deCONZ::appArgumentNumeric("--auto-connect", 1) == 1) ? true : false;
    gwPermitJoinDuration = 0;
    gwPermitJoinResend = 0;
    gwNetworkOpenDuration = 60;
    gwWifiState = WifiStateInitMgmt;
    gwWifiMgmt = 0;
    gwWifi = QLatin1String("not-configured");
    gwWifiStateString = QLatin1String("not-configured");
    gwWifiType = QLatin1String("accesspoint");
    gwWifiName = QString();
    gwWifiEth0 = QString();
    gwWifiWlan0 = QString();
    gwWifiClientName = QString();
    gwWifiChannel = "1";
    gwWifiIp = QLatin1String("192.168.8.1");
    gwWifiPw = "";
    gwWifiClientPw = "";
    //gwWifiApPw = "";
    gwWifiPageActive = false;
    gwHomebridge = QLatin1String("not-managed");
    gwHomebridgeVersion = QString();
    gwHomebridgeUpdateVersion = QString();
    gwHomebridgeUpdate = false;
    gwHomebridgePin = QString();
    gwRgbwDisplay = "1";
    gwTimeFormat = "12h";
    gwZigbeeChannel = 0;
    gwGroup0 = 0;
    gwName = GW_DEFAULT_NAME;
    gwUpdateVersion = GW_SW_VERSION; // will be replaced by discovery handler
    {
        const QDateTime d = QDateTime::fromMSecsSinceEpoch(GW_SW_DATE * 1000LLU);
        gwUpdateDate = d.toString("yyyy-MM-ddTHH:mm:ss"); // ISO 8601;
    }
    gwSwUpdateState = swUpdateState.noUpdate;
    gwUpdateChannel = "stable";
    gwReportingEnabled = (deCONZ::appArgumentNumeric("--reporting", 1) == 1) ? true : false;
    gwFirmwareNeedUpdate = false;
    gwFirmwareVersion = "0x00000000"; // query later
    gwFirmwareVersionUpdate = "";
    gwMAC = "38:60:77:7c:53:18";
    gwIPAddress = "127.0.0.1";
    gwPort = (apsCtrl ? apsCtrl->getParameter(deCONZ::ParamHttpPort) : static_cast<quint16>(deCONZ::appArgumentNumeric("--http-port", 80)));
    gwNetMask = "255.0.0.0";
    gwLANBridgeId = (deCONZ::appArgumentNumeric("--lan-bridgeid", 0) == 1);
    gwBridgeId = "0000000000000000";
    gwAllowLocal = (deCONZ::appArgumentNumeric("--allow-local", 1) == 1);
    gwConfig["websocketport"] = 443;
    fwUpdateState = FW_Idle;

    wifiPageActiveTimer = new QTimer(this);
    wifiPageActiveTimer->setSingleShot(true);

    connect(wifiPageActiveTimer, SIGNAL(timeout()),
            this, SLOT(wifiPageActiveTimerFired()));

    QProcessEnvironment env = QProcessEnvironment::systemEnvironment();

    if (env.contains(QLatin1String("INVOCATION_ID")))
    {
        // deCONZ is startet from a systemd unit
        //   -- deconz.service or deconz-gui.service
        if (env.contains(QLatin1String("DISPLAY")))
        {
            gwRunMode = QLatin1String("systemd/gui");
        }
        else
        {
            gwRunMode = QLatin1String("systemd/headless");
        }
    }
    else
    {
        gwRunMode = QLatin1String("normal");

#ifdef Q_OS_LINUX
        // check if we run from shell script
        QFile pproc(QString("/proc/%1/cmdline").arg(getppid()));

        if (pproc.exists() && pproc.open(QIODevice::ReadOnly))
        {
            QByteArray name = pproc.readAll();
            if (name.endsWith(".sh"))
            {
                DBG_Printf(DBG_INFO, "runs in shell script %s\n", qPrintable(name));
                gwRunFromShellScript = true;
                gwRunMode = QLatin1String("shellscript");
            }
            else
            {
                gwRunFromShellScript = false;
                DBG_Printf(DBG_INFO, "parent process %s\n", qPrintable(name));
            }
        }

        QFile cgroups("/proc/1/cgroup");
        if (cgroups.exists() && cgroups.open(QIODevice::ReadOnly))
        {
            QByteArray content = cgroups.readAll();
            if (content.contains("/docker/"))
            {
                // https://github.com/marthoc/docker-deconz/blob/master/amd64-hassio-addon/run.sh
                if (QFile::exists("/data/options.json"))
                {
                    gwRunMode = QLatin1String("docker/hassio");
                }
                else
                {
                    gwRunMode = QLatin1String("docker");
                }
            }
        }
#else
        gwRunFromShellScript = false;
#endif
    }

    DBG_Printf(DBG_INFO, "gw run mode: %s\n", qPrintable(gwRunMode));

    // offical dresden elektronik sd-card image?
    {
        QFile f(dataPath + QLatin1String("/gw-version"));
        if (f.exists() && f.open(QFile::ReadOnly))
        {
            gwSdImageVersion = f.readAll().trimmed();
        }
        else
        {
            DBG_Printf(DBG_INFO, "GW sd-card image version file does not exist: %s\n", qPrintable(f.fileName()));
        }
    }

    if (!gwSdImageVersion.isEmpty())
    {
        DBG_Printf(DBG_INFO, "GW sd-card image version: %s\n", qPrintable(gwSdImageVersion));
    }

#ifdef Q_OS_LINUX
#ifdef ARCH_ARM
    {
        QFile f("/sys/block/mmcblk0/device/cid");
        if (f.exists() && f.open(QFile::ReadOnly))
        {
            QByteArray cid = f.readAll().left(32);
            // wipe serial number
            for (int i = 18; i < (18 + 8); i++)
            { cid[i] = 'f'; }
            DBG_Printf(DBG_INFO, "sd-card cid: %s\n", qPrintable(cid));
        }
    }
#endif
#endif

    config.addItem(DataTypeTime, RConfigLocalTime);

    {
        QHttpRequestHeader hdr;
        QStringList path;
        QString content;
        ApiRequest dummyReq(hdr, path, nullptr, content);
        dummyReq.version = ApiVersion_1_DDEL;
        configToMap(dummyReq, gwConfig);
    }

    gwProxyPort = 0;
    gwProxyAddress = "none";

    timeManagerState = TM_Init;
    ntpqProcess = nullptr;
    QTimer::singleShot(2000, this, SLOT(timeManagerTimerFired()));

    pollSwUpdateStateTimer = new QTimer(this);
    pollSwUpdateStateTimer->setSingleShot(false);
    connect(pollSwUpdateStateTimer, SIGNAL(timeout()),
            this, SLOT(pollSwUpdateStateTimerFired()));

    connect(deCONZ::ApsController::instance(), &deCONZ::ApsController::configurationChanged,
            this, &DeRestPluginPrivate::configurationChanged);

#if DECONZ_LIB_VERSION >= 0x010C00
    connect(deCONZ::ApsController::instance(), &deCONZ::ApsController::networkStateChangeRequest,
            this, &DeRestPluginPrivate::networkStateChangeRequest);
#endif
}

/*! Init timezone. */
void DeRestPluginPrivate::initTimezone()
{
#ifdef Q_OS_LINUX
#ifdef ARCH_ARM
    if (gwTimezone.isEmpty())
    {
        // set timezone in system and save it in db
        gwTimezone = QLatin1String("Etc/GMT");

        if (getenv("TZ") == NULL)
        {
            setenv("TZ", qPrintable(gwTimezone), 1);
        }
        else
        {
            gwTimezone = getenv("TZ");
        }
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
    }
    else
    {
        // set system timezone from db
        if (getenv("TZ") != gwTimezone)
        {
            setenv("TZ", qPrintable(gwTimezone), 1);
            //also set zoneinfo on RPI
            char param1[100];
            strcpy(param1, "/usr/share/zoneinfo/");
            strcpy(param1, qPrintable(gwTimezone));
            symlink(param1, "/etc/localtime");
        }
    }
    tzset();
#endif
#endif

    if (daylightSensorId.isEmpty())
    {
        Sensor dl;
        ResourceItem *item;
        openDb();
        daylightSensorId = QString::number(getFreeSensorId());
        closeDb();
        dl.setId(daylightSensorId);
        dl.setType(QLatin1String("Daylight"));
        dl.setName(QLatin1String("Daylight"));
        item = dl.addItem(DataTypeBool, RConfigConfigured);
        item->setValue(false);
        item = dl.addItem(DataTypeInt8, RConfigSunriseOffset);
        item->setValue(30);
        item = dl.addItem(DataTypeInt8, RConfigSunsetOffset);
        item->setValue(-30);
        item = dl.addItem(DataTypeBool, RStateDaylight);
        item->setValue(QVariant());
        item = dl.addItem(DataTypeBool, RStateDark);
        item->setValue(QVariant());
        item = dl.addItem(DataTypeInt32, RStateStatus);
        item->setValue(QVariant());

        dl.removeItem(RConfigReachable);

        dl.setModelId(QLatin1String("PHDL00"));
        dl.setManufacturer(QLatin1String("Philips"));
        dl.setSwVersion(QLatin1String("1.0"));
        dl.item(RConfigOn)->setValue(true);
        dl.setNeedSaveDatabase(true);
        queSaveDb(DB_SENSORS, DB_SHORT_SAVE_DELAY);
        sensors.push_back(dl);
    }

    QTimer *daylighTimer = new QTimer(this);
    connect(daylighTimer, SIGNAL(timeout()), this, SLOT(daylightTimerFired()));
    daylighTimer->setSingleShot(false);
    daylighTimer->start(10000);

    daylightTimerFired();
}

/*! Init the network info. */
void DeRestPluginPrivate::initNetworkInfo()
{
    bool ok = false;
    bool retry = false;

    QList<QNetworkInterface> ifaces = QNetworkInterface::allInterfaces();
    QList<QNetworkInterface>::Iterator i = ifaces.begin();
    QList<QNetworkInterface>::Iterator end = ifaces.end();

    // optimistic approach chose the first available ethernet interface
    for (; !ok && i != end; ++i)
    {
        if (i->name() == QLatin1String("tun0"))
        {
            continue;
        }

        retry = true;
        if ((i->flags() & QNetworkInterface::IsUp) &&
            (i->flags() & QNetworkInterface::IsRunning) &&
            !(i->flags() & QNetworkInterface::IsLoopBack))
        {
            //DBG_Printf(DBG_INFO, "%s (%s)\n", qPrintable(i->name()), qPrintable(i->humanReadableName()));

            QList<QNetworkAddressEntry> addresses = i->addressEntries();

            if (ok || addresses.isEmpty())
            {
                continue;
            }

            QList<QNetworkAddressEntry>::Iterator a = addresses.begin();
            QList<QNetworkAddressEntry>::Iterator aend = addresses.end();

            for (; a != aend; ++a)
            {
                if (a->ip().protocol() != QAbstractSocket::IPv4Protocol)
                {
                    continue;
                }

                quint32 ipv4 = a->ip().toIPv4Address();
                if ((ipv4 & 0xff000000UL) == 0x7f000000UL)
                {
                    // 127.x.x.x
                    continue;
                }

                if ((ipv4 & 0x80000000UL) != 0x00000000UL && // class A 0xxx xxxx
                    (ipv4 & 0xc0000000UL) != 0x80000000UL && // class B 10xx xxxx
                    (ipv4 & 0xe0000000UL) != 0xc0000000UL)   // class C 110x xxxx
                {
                    // unsupported network
                    continue;
                }

                if ((ipv4 & 0xFFFF0000ul) == 0xA9FE0000ul)
                {
                    // link local ip
                    // 169.254.0.0 - 169.254.255.255
                    continue;
                }

                QString mac = i->hardwareAddress().toLower();
                gwMAC = mac;
                if (gwLANBridgeId) {
                    gwBridgeId = mac.mid(0,2) + mac.mid(3,2) + mac.mid(6,2) + "fffe" + mac.mid(9,2) + mac.mid(12,2) + mac.mid(15,2);
                    if (!gwConfig.contains("bridgeid") || gwConfig["bridgeid"] != gwBridgeId)
                    {
                        DBG_Printf(DBG_INFO, "Set bridgeid to %s\n", qPrintable(gwBridgeId));
                        gwConfig["bridgeid"] = gwBridgeId;
                        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
                    }
                }
                gwIPAddress = a->ip().toString();
                gwConfig["ipaddress"] = gwIPAddress;
                gwNetMask = a->netmask().toString();
                initDescriptionXml();
                ok = true;
                retry = false;
                break;
            }
        }
    }

    if (!ok)
    {
        DBG_Printf(DBG_ERROR, "No valid ethernet interface found\n");
    }

    if (retry)
    {
        QTimer::singleShot(10000, this, SLOT(initNetworkInfo()));
    }
}

/*! Init WiFi parameters if necessary. */
void DeRestPluginPrivate::initWiFi()
{
#if !defined(ARCH_ARM)
    gwWifi = QLatin1String("not-available");
    return;
#else
    bool retry = false;
    QList<QNetworkInterface> ifaces = QNetworkInterface::allInterfaces();
    QList<QNetworkInterface>::Iterator i = ifaces.begin();
    QList<QNetworkInterface>::Iterator end = ifaces.end();

    bool wifiAvailable = false;
    // only show wifi if wlan0 interface is found
    for (; i != end; ++i)
    {
        if (i->name() == QLatin1String("wlan0"))
        {
            wifiAvailable = true;
        }
    }
    // or rpi3 is used
    // 3A+ = 9020e0; 3B+ = a020d3; 3B(Embest) = a22082; 3B(Sony UK) = a02082; 3B(Sony Jp) = a32082; 3B(Stadium) = a52082;
    if (piRevision == "9020e0" || piRevision == "a020d3" || piRevision == "a22082" ||
        piRevision == "a02082" || piRevision == "a32082" || piRevision == "a52082")
    {
        wifiAvailable = true;
    }

    if (!wifiAvailable)
    {
        gwWifi = QLatin1String("not-available");
        return;
    }

    // only configure for official image
    if (gwSdImageVersion.isEmpty())
    {
        return;
    }

    if (gwWifiLastUpdated == 0)
    {
        QDateTime currentDateTime = QDateTime::currentDateTimeUtc();
        gwWifiLastUpdated = currentDateTime.toTime_t();
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
    }

    if (gwWifiState == WifiStateInitMgmt)
    {
        retry = true;
    }

    if (gwBridgeId.isEmpty() || gwBridgeId.endsWith(QLatin1String("0000")))
    {
        retry = true;
    }

    quint32 fwVersion = apsCtrl->getParameter(deCONZ::ParamFirmwareVersion);
    if (fwVersion < 0x261e0500) // first version to support security material set
    {
        retry = true;
    }

    if (gwWifi != QLatin1String("not-configured"))
    {
        retry = true;
    }

    QByteArray sec0 = apsCtrl->getParameter(deCONZ::ParamSecurityMaterial0);
    if (sec0.isEmpty())
    {
        retry = true;
    }

    if (retry)
    {
        QTimer::singleShot(10000, this, SLOT(initWiFi()));
        return;
    }

    if (!pollDatabaseWifiTimer)
    {
        pollDatabaseWifiTimer = new QTimer(this);
        pollDatabaseWifiTimer->setSingleShot(false);
        connect(pollDatabaseWifiTimer, SIGNAL(timeout()),
                this, SLOT(pollDatabaseWifiTimerFired()));
        pollDatabaseWifiTimer->start(10000);
    }

    if (gwWifiMgmt & WIFI_MGMT_ACTIVE)
    {
        return;
    }

    if (gwWifiName == QLatin1String("Phoscon-Gateway-0000"))
    {
        // proceed to correct these
        gwWifiName.clear();
    }

    gwWifi = QLatin1String("configured");
    gwWifiType = QLatin1String("accesspoint");
    gwWifiStateString = QLatin1String("configured-ap");

    if (gwWifiName.isEmpty() || gwWifiName == QLatin1String("Not set"))
    {
        gwWifiName = QString("Phoscon-Gateway-%1").arg(gwBridgeId.right(4));
        gwWifiBackupName = gwWifiName;
    }

    if (gwWifiPw.isEmpty() || gwWifiPw.length() < 8)
    {
        gwWifiPw = sec0.mid(16, 16).toUpper();
        gwWifiBackupPw = gwWifiPw;
    }

    queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
#endif
}

/*! Handle deCONZ::ApsController::configurationChanged() event.
    This will be called when the configuration was changed via deCONZ network settings.
 */
void DeRestPluginPrivate::configurationChanged()
{
    if (!apsCtrl)
    {
        return;
    }

    DBG_Printf(DBG_INFO, "deCONZ configuration changed");

    bool update = false;

    const quint64 macAddress = apsCtrl->getParameter(deCONZ::ParamMacAddress);
    //const quint16 nwkAddress = apsCtrl->getParameter(deCONZ::ParamNwkAddress);
    if (macAddress != 0 && gwDeviceAddress.ext() != macAddress)
    {
        gwDeviceAddress = {}; // reset let idle timer update bridgeid
        update = true;
    }

    const quint8 channel = apsCtrl->getParameter(deCONZ::ParamCurrentChannel);
    if (channel >= 11 && channel <= 26 && gwZigbeeChannel != channel)
    {
        gwZigbeeChannel = channel;
        update = true;
    }

    if (update)
    {
        updateZigBeeConfigDb();
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
    }
}

/*! Network state change request received from deCONZ core (e.g. Join/Leave clicked)
 */
void DeRestPluginPrivate::networkStateChangeRequest(bool shouldConnect)
{
    if (gwRfConnectedExpected != shouldConnect)
    {
        gwRfConnectedExpected = shouldConnect;
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
    }
}

/*! Configuration REST API broker.
    \param req - request data
    \param rsp - response data
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::handleConfigBasicApi(const ApiRequest &req, ApiResponse &rsp)
{
    // POST /api
    if ((req.path.size() == 1) && (req.hdr.method() == QLatin1String("POST")))
    {
        return createUser(req, rsp);
    }
    // GET /api/challenge
    else if ((req.path.size() == 2) && (req.hdr.method() == QLatin1String("GET")) && (req.path[1] == QLatin1String("challenge")))
    {
        return getChallenge(req, rsp);
    }
    // GET /api/config
    else if ((req.path.size() == 2) && (req.hdr.method() == QLatin1String("GET")) && (req.path[1] == QLatin1String("config")))
    {
        return getBasicConfig(req, rsp);
    }
    // DELETE /api/config/password
    else if ((req.path.size() == 3) && (req.hdr.method() == QLatin1String("DELETE")) && (req.path[1] == QLatin1String("config")) && (req.path[2] == QLatin1String("password")))
    {
        return deletePassword(req, rsp);
    }
    // GET /api/<nouser>/config
    else if ((req.path.size() == 3) && (req.hdr.method() == QLatin1String("GET")) && (req.path[2] == QLatin1String("config")))
    {
        return getBasicConfig(req, rsp);
    }

    return REQ_NOT_HANDLED;
}

/*! Configuration REST API broker.
    \param req - request data
    \param rsp - response data
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::handleConfigLocalApi(const ApiRequest &req, ApiResponse &rsp)
{
    // GET api/<localuser>/config/wifi
    if ((req.path.size() == 4) && (req.hdr.method() == QLatin1String("GET")) && (req.path[2] == QLatin1String("config")) && (req.path[3] == QLatin1String("wifi")))
    {
        return getWifiState(req, rsp);
    }
    // PUT /api/<localuser>/config/wifi/updated
    else if ((req.path.size() == 5) && (req.hdr.method() == QLatin1String("PUT")) && (req.path[2] == QLatin1String("config")) && (req.path[3] == QLatin1String("wifi")) && (req.path[4] == QLatin1String("updated")))
    {
        return putWifiUpdated(req, rsp);
    }
    // PUT /api/<localuser>/config/homebridge/updated
    else if ((req.path.size() == 5) && (req.hdr.method() == QLatin1String("PUT")) && (req.path[2] == QLatin1String("config")) && (req.path[3] == QLatin1String("homebridge")) && (req.path[4] == QLatin1String("updated")))
    {
        return putHomebridgeUpdated(req, rsp);
    }
    // PUT /api/<localuser>/config/wifi/scanresult
    else if ((req.path.size() == 5) && (req.hdr.method() == QLatin1String("PUT")) && (req.path[2] == QLatin1String("config")) && (req.path[3] == QLatin1String("wifi")) && (req.path[4] == QLatin1String("scanresult")))
    {
        return putWifiScanResult(req, rsp);
    }

    return REQ_NOT_HANDLED;
}

/*! Configuration REST API broker.
    \param req - request data
    \param rsp - response data
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::handleConfigFullApi(const ApiRequest &req, ApiResponse &rsp)
{
    // GET /api/<apikey>/config
    if ((req.path.size() == 3) && (req.hdr.method() == "GET") && (req.path[2] == "config"))
    {
        return getConfig(req, rsp);
    }
    // GET api/<apikey>/config/wifi
    else if ((req.path.size() == 4) && (req.hdr.method() == "GET") && (req.path[2] == "config") && (req.path[3] == "wifi"))
    {
        return getWifiState(req, rsp);
    }
    // PUT /api/<apikey>/config/wifi
    else if ((req.path.size() == 4) && (req.hdr.method() == "PUT") && (req.path[2] == "config") && (req.path[3] == "wifi"))
    {
        return configureWifi(req, rsp);
    }
    // PUT /api/<apikey>/config/wifi/restore
    else if ((req.path.size() == 5) && (req.hdr.method() == "PUT") && (req.path[2] == "config") && (req.path[3] == "wifi") && (req.path[4] == "restore"))
    {
        return restoreWifiConfig(req, rsp);
    }
    // GET /api/config/zigbee
    else if ((req.path.size() == 4) && (req.hdr.method() == QLatin1String("GET")) && (req.path[2] == QLatin1String("config")) && (req.path[3] == QLatin1String("zigbee")))
    {
        return getZigbeeConfig(req, rsp);
    }
    // PUT /api/config/zigbee/<id>
    else if ((req.path.size() == 5) && (req.hdr.method() == QLatin1String("PUT")) && (req.path[2] == QLatin1String("config")) && (req.path[3] == QLatin1String("zigbee")))
    {
        return putZigbeeConfig(req, rsp);
    }
    // PUT /api/<apikey>/config/homebridge/reset
    else if ((req.path.size() == 5) && (req.hdr.method() == "PUT") && (req.path[2] == "config") && (req.path[3] == "homebridge") && (req.path[4] == "reset"))
    {
        return resetHomebridge(req, rsp);
    }
    // PUT, PATCH /api/<apikey>/config
    else if ((req.path.size() == 3) && (req.hdr.method() == "PUT" || req.hdr.method() == "PATCH") && (req.path[2] == "config"))
    {
        return modifyConfig(req, rsp);
    }
    // DELETE /api/<apikey>/config/whitelist/<username2>
    else if ((req.path.size() == 5) && (req.hdr.method() == "DELETE") && (req.path[2] == "config") && (req.path[3] == "whitelist"))
    {
        return deleteUser(req, rsp);
    }
    // POST /api/<apikey>/config/update
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "update"))
    {
        return updateSoftware(req, rsp);
    }
    // POST /api/<apikey>/config/restart
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "restart"))
    {
        return restartGateway(req, rsp);
    }
    // POST /api/<apikey>/config/restartapp
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "restartapp"))
    {
        return restartApp(req, rsp);
    }
    // POST /api/<apikey>/config/shutdown
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "shutdown"))
    {
        return shutDownGateway(req, rsp);
    }
    // POST /api/<apikey>/config/updatefirmware
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "updatefirmware"))
    {
        return updateFirmware(req, rsp);
    }
    // POST /api/<apikey>/config/export
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "export"))
    {
        return exportConfig(req, rsp);
    }
    // POST /api/<apikey>/config/import
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "import"))
    {
        return importConfig(req, rsp);
    }
    // POST /api/<apikey>/config/reset
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "reset"))
    {
        return resetConfig(req, rsp);
    }
    // POST /api/<apikey>/config/wifiscan
    else if ((req.path.size() == 4) && (req.hdr.method() == "POST") && (req.path[2] == "config") && (req.path[3] == "wifiscan"))
    {
        return scanWifiNetworks(req, rsp);
    }
    // PUT /api/<apikey>/config/password
    else if ((req.path.size() == 4) && (req.hdr.method() == "PUT") && (req.path[2] == "config") && (req.path[3] == "password"))
    {
        return changePassword(req, rsp);
    }

    return REQ_NOT_HANDLED;
}

/*! POST /api
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::createUser(const ApiRequest &req, ApiResponse &rsp)
{
    bool ok;
    bool found = false; // already exist?
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();
    ApiAuth auth;
    QHostAddress localHost(QHostAddress::LocalHost);

    if (!gwLinkButton)
    {
        QString host = req.hdr.value(QLatin1String("Host"));
        if (host.indexOf(':') > 0)
        {
            host = host.split(':')[0];
        }

        if (gwAllowLocal && req.sock->peerAddress() == localHost && (host == QLatin1String("127.0.0.1") || host == QLatin1String("localhost")))
        {
            // proceed
        }
        else if (!allowedToCreateApikey(req, rsp, map))
        {
            return REQ_READY_SEND;
        }
    }

    if (!ok || map.isEmpty())
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_INVALID_JSON, QLatin1String("/"), QLatin1String("body contains invalid JSON")));
        return REQ_READY_SEND;
    }

    if (!map.contains("devicetype")) // required
    {
        rsp.list.append(errorToMap(ERR_MISSING_PARAMETER, QLatin1String("/"), QLatin1String("missing parameters in body")));
        rsp.httpStatus = HttpStatusBadRequest;
        return REQ_READY_SEND;
    }

    auth.setDeviceType(map["devicetype"].toString());

    if (map.contains("username")) // optional (note username = apikey)
    {
        if ((map["username"].type() != QVariant::String) ||
            (map["username"].toString().length() < 10))
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QLatin1String("/"), QString("invalid value, %1, for parameter, username").arg(map["username"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        auth.apikey = map["username"].toString();

        // check if this apikey is already known
        std::vector<ApiAuth>::const_iterator i = apiAuths.begin();
        std::vector<ApiAuth>::const_iterator end = apiAuths.end();

        for (; i != end; ++i)
        {
            if (auth.apikey == i->apikey && i->state == ApiAuth::StateNormal)
            {
                found = true;
                break;
            }
        }
    }
    else
    {
        // check for glitches from some devices registering too fast (Amazon Echo)
        std::vector<ApiAuth>::const_iterator i = apiAuths.begin();
        std::vector<ApiAuth>::const_iterator end = apiAuths.end();

        for (; i != end && !found ; ++i)
        {
            if (auth.devicetype == i->devicetype && i->state == ApiAuth::StateNormal)
            {
                if (i->createDate.secsTo(QDateTime::currentDateTimeUtc()) < 30)
                {
                    auth = *i;
                    found = true;
                    DBG_Printf(DBG_INFO, "reuse recently created auth username: %s, devicetype: %s\n", qPrintable(auth.apikey), qPrintable(auth.devicetype));
                }
            }
        }

        if (!found)
        {
            // create a random key (used only if not provided)
            for (int i = 0; i < 5; i++)
            {
                quint8 rnd = qrand() & 0xFF;
                QString frac = QString("%1").arg(rnd, 2, 16, QLatin1Char('0')).toUpper();
                auth.apikey.append(frac);
            }
        }
    }

    QVariantMap map1;
    QVariantMap map2;
    map1["username"] = auth.apikey;
    map2["success"] = map1;
    rsp.list.append(map2);
    rsp.httpStatus = HttpStatusOk;

    if (!found)
    {
        auth.createDate = QDateTime::currentDateTimeUtc();
        auth.lastUseDate = QDateTime::currentDateTimeUtc();
        auth.needSaveDatabase = true;
        apiAuths.push_back(auth);
        queSaveDb(DB_AUTH, DB_SHORT_SAVE_DELAY);
        updateEtag(gwConfigEtag);
        DBG_Printf(DBG_INFO, "created username: %s, devicetype: %s\n", qPrintable(auth.apikey), qPrintable(auth.devicetype));
    }
    else
    {
        DBG_Printf(DBG_INFO, "apikey username: %s, devicetype: %s already exists\n", qPrintable(auth.apikey), qPrintable(auth.devicetype));
    }

    rsp.etag = gwConfigEtag;

    return REQ_READY_SEND;
}

/*! Puts all parameters in a map for later JSON serialization.
 */
void DeRestPluginPrivate::configToMap(const ApiRequest &req, QVariantMap &map)
{
    QVariantMap whitelist;
    QVariantMap swupdate;
    QVariantMap swupdate2;
    QVariantMap autoinstall;
    QVariantMap bridge;
    QVariantMap devicetypes;
    QVariantMap portalstate;
    QVariantMap internetservices;
    QVariantMap backup;
    QDateTime datetime = QDateTime::currentDateTimeUtc();
    QDateTime localtime = QDateTime::currentDateTime();

    basicConfigToMap(map);
    map["ipaddress"] = gwIPAddress;
    map["netmask"] = gwNetMask;

    std::vector<ApiAuth>::const_iterator i = apiAuths.begin();
    std::vector<ApiAuth>::const_iterator end = apiAuths.end();
    for (; i != end; ++i)
    {
        if (i->state == ApiAuth::StateNormal)
        {
            QVariantMap au;
            au["last use date"] = i->lastUseDate.toString("yyyy-MM-ddTHH:mm:ss"); // ISO 8601
            au["create date"] = i->createDate.toString("yyyy-MM-ddTHH:mm:ss"); // ISO 8601
            au["name"] = i->devicetype;
            whitelist[i->apikey] = au;
        }
    }

    if (req.apiVersion() >= ApiVersion_1_DDEL)
    {
        map["permitjoin"] = static_cast<double>(gwPermitJoinDuration);
        map["permitjoinfull"] = static_cast<double>(gwPermitJoinResend);
        map["otauactive"] = isOtauActive();
        map["otaustate"] = (isOtauBusy() ? "busy" : (isOtauActive() ? "idle" : "off"));
        map["groupdelay"] = static_cast<double>(gwGroupSendDelay);
        map["discovery"] = (gwAnnounceInterval > 0);
        map["updatechannel"] = gwUpdateChannel;
        map["fwneedupdate"] = gwFirmwareNeedUpdate;
        map["runmode"] = gwRunMode;
        if (gwFirmwareNeedUpdate)
        {
            map["fwversionupdate"] = gwFirmwareVersionUpdate;
        }

        switch (fwUpdateState)
        {
        case FW_DisconnectDevice:
        case FW_Update:
        case FW_UpdateWaitFinished:
        { map[QLatin1String("fwupdatestate")] = QLatin1String("running"); }
            break;

        default:
        { map[QLatin1String("fwupdatestate")] = QLatin1String("idle"); }
            break;
        }

        map["announceurl"] = gwAnnounceUrl;
        map["announceinterval"] = static_cast<double>(gwAnnounceInterval);
        map["swversion"] = QLatin1String(GW_SW_VERSION);
        map["swcommit"] = QLatin1String(GIT_COMMMIT);
        swupdate["version"] = gwUpdateVersion;
        swupdate["updatestate"] = static_cast<double>(0);
        swupdate["url"] = "";
        swupdate["text"] = "";
        swupdate["notify"] = false;
        map["swupdate"] = swupdate;
        map["port"] = gwPort;
        // since api version 1.2.1
        map["apiversion"] = QLatin1String(GW_SW_VERSION);
        map["system"] = "other";
#ifdef ARCH_ARM
#ifdef Q_OS_LINUX
        map["system"] = "linux-gw";
#endif
        map["wifi"] = gwWifi;
        map["homebridge"] = gwHomebridge;
        map["homebridgepin"] = gwHomebridgePin;
        map["homebridgeversion"] = gwHomebridgeVersion;
        map["homebridgeupdateversion"] = gwHomebridgeUpdateVersion;
        map["homebridgeupdate"] = gwHomebridgeUpdate;
#else
        map["wifi"] = QLatin1String("not-available");
        map["homebridge"] = QLatin1String("not-available");
#endif
        map["wifiavailable"] = gwWifiAvailable;
        map["wifitype"] = gwWifiType;
        map["wifiname"] = gwWifiName;
        map["wificlientname"] = gwWifiClientName;
        map["wifichannel"] = gwWifiChannel;
        map["wifimgmt"] = static_cast<double>(gwWifiMgmt);
        map["wifiip"] = gwWifiIp;
//        map["wifiappw"] = gwWifiPw;
//        map["wifiappw"] = QString(); // TODO add secured transfer via PKI
//        map["wificlientpw"] = QString(); // TODO add secured transfer via PKI
    }
    else
    {
        if (req.mode != ApiModeNormal)
        {
            map["swversion"] = QLatin1String("1940042020");
            map["apiversion"] = QLatin1String("1.40.0");
            map["modelid"] = QLatin1String("BSB002");
        }
        devicetypes["bridge"] = false;
        devicetypes["lights"] = QVariantList();
        devicetypes["sensors"] = QVariantList();
        swupdate["devicetypes"] = devicetypes;
        swupdate["updatestate"] = static_cast<double>(0);
        swupdate["checkforupdate"] = false;
        swupdate["url"] = "";
        swupdate["text"] = "";
        swupdate["notify"] = false;
        map["portalconnection"] = QLatin1String("disconnected");
        portalstate["signedon"] = false;
        portalstate["incoming"] = false;
        portalstate["outgoing"] = false;
        portalstate["communication"] = QLatin1String("disconnected");
        map["portalstate"] = portalstate;
        internetservices["remoteaccess"] = QLatin1String("disconnected");
        map["internetservices"] = internetservices;
        backup["status"] = QLatin1String("idle");
        backup["errorcode"] = 0;
        map["backup"] = backup;
        map["swupdate"] = swupdate;
    }

    bridge["state"] = gwSwUpdateState;
    bridge["lastinstall"] = gwUpdateDate;
    swupdate2["bridge"] = bridge;
    swupdate2["checkforupdate"] = false;
    swupdate2["state"] = gwSwUpdateState;
    swupdate2["install"] = false;
    autoinstall["updatetime"] = "";
    autoinstall["on"] = false;
    swupdate2["autoinstall"] = autoinstall;
    swupdate2["lastchange"] = "";
    swupdate2["lastinstall"] = "";
    map["swupdate2"] = swupdate2;

    map["fwversion"] = gwFirmwareVersion;
    map["rfconnected"] = gwRfConnected;
    map["uuid"] = gwUuid;
    if (apsCtrl)
    {
        map["zigbeechannel"] = apsCtrl->getParameter(deCONZ::ParamCurrentChannel);
        map["panid"] = apsCtrl->getParameter(deCONZ::ParamPANID);
    }
    else
    {
        map["zigbeechannel"] = static_cast<double>(gwZigbeeChannel);
    }

    if (gwConfig.contains(QLatin1String("ntp")))
    {
        map["ntp"] = gwConfig["ntp"];
    }

    map["dhcp"] = true; // dummy
    map["proxyaddress"] = gwProxyAddress;
    map["proxyport"] = static_cast<double>(gwProxyPort);
    map["UTC"] = datetime.toString(QLatin1String("yyyy-MM-ddTHH:mm:ss")); // ISO 8601
    map["localtime"] = localtime.toString(QLatin1String("yyyy-MM-ddTHH:mm:ss")); // ISO 8601
    map["timezone"] = gwTimezone;
    map["networkopenduration"] = gwNetworkOpenDuration;
    map["timeformat"] = gwTimeFormat;
    map["whitelist"] = whitelist;
    map["lightlastseeninterval"] = gwLightLastSeenInterval;
    map["linkbutton"] = gwLinkButton;
    map["portalservices"] = false;
    map["websocketport"] = static_cast<double>(gwConfig["websocketport"].toUInt());
    map["websocketnotifyall"] = gwWebSocketNotifyAll;
    map["disablePermitJoinAutoOff"] = gwdisablePermitJoinAutoOff;

    QStringList ipv4 = gwIPAddress.split(".");

    if (ipv4.size() == 4)
    {
        ipv4.removeLast();
        ipv4.append("1");
        map["gateway"] = ipv4.join(".");
    }
    else
    {
        map["gateway"] = "0.0.0.0";
    }
}

/*! Puts all parameters in a map for later JSON serialization.
 */
void DeRestPluginPrivate::basicConfigToMap(QVariantMap &map)
{
    map["name"] = gwName;
    map["datastoreversion"] = QLatin1String("93");
    const QStringList versions = QString(GW_SW_VERSION).split('.');
    const QString swversion = QString("%1.%2.%3").arg(versions[0].toInt()).arg(versions[1].toInt()).arg(versions[2].toInt());
    map["swversion"] = swversion;
    map["apiversion"] = QString(GW_API_VERSION);
    map["mac"] = gwMAC;
    map["bridgeid"] = gwBridgeId;
    map["factorynew"] = false;
    map["replacesbridgeid"] = QVariant();
    map["modelid"] = QLatin1String("deCONZ");
    map["starterkitid"] = QLatin1String("");

    if (!apsCtrl->getParameter(deCONZ::ParamDeviceName).isEmpty())
    {
        map["devicename"] = apsCtrl->getParameter(deCONZ::ParamDeviceName);
    }
}

/*! GET /api/<apikey>
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::getFullState(const ApiRequest &req, ApiResponse &rsp)
{
    checkRfConnectState();

    // handle ETag
    if (req.hdr.hasKey("If-None-Match"))
    {
        QString etag = req.hdr.value("If-None-Match");

        if (gwConfigEtag == etag)
        {
            rsp.httpStatus = HttpStatusNotModified;
            rsp.etag = etag;
            return REQ_READY_SEND;
        }
    }

    QVariantMap lightsMap;
    QVariantMap groupsMap;
    QVariantMap schedulesMap;
    QVariantMap scenesMap;
    QVariantMap sensorsMap;
    QVariantMap rulesMap;
    QVariantMap configMap;
    QVariantMap resourcelinksMap;

    // lights
    {
        std::vector<LightNode>::const_iterator i = nodes.begin();
        std::vector<LightNode>::const_iterator end = nodes.end();

        for (; i != end; ++i)
        {
            if (i->state() == LightNode::StateDeleted)
            {
                continue;
            }

            QVariantMap map;
            if (lightToMap(req, &(*i), map))
            {
                lightsMap[i->id()] = map;
            }
        }
    }

    // groups
    {
        std::vector<Group>::const_iterator i = groups.begin();
        std::vector<Group>::const_iterator end = groups.end();

        for (; i != end; ++i)
        {
            // ignore deleted groups
            if (i->state() == Group::StateDeleted || i->state() == Group::StateDeleteFromDB)
            {
                continue;
            }

            if (i->address() != gwGroup0) // don't return special group 0
            {
                QVariantMap map;
                if (groupToMap(req, &(*i), map))
                {
                    groupsMap[i->id()] = map;
                }
            }
        }
    }

    // schedules
    {
        std::vector<Schedule>::const_iterator i = schedules.begin();
        std::vector<Schedule>::const_iterator end = schedules.end();

        for (; i != end; ++i)
        {
            if (i->state == Schedule::StateDeleted)
            {
                continue;
            }
            schedulesMap[i->id] = i->jsonMap;
        }
    }

    // sensors
    {
        std::vector<Sensor>::const_iterator i = sensors.begin();
        std::vector<Sensor>::const_iterator end = sensors.end();

        for (; i != end; ++i)
        {
            if (i->deletedState() == Sensor::StateDeleted)
            {
                continue;
            }
            QVariantMap map;
            if (sensorToMap(&(*i), map, req))
            {
                sensorsMap[i->id()] = map;
            }
        }
    }

    // resourcelinks
    {
        std::vector<Resourcelinks>::const_iterator i = resourcelinks.begin();
        std::vector<Resourcelinks>::const_iterator end = resourcelinks.end();

        for (; i != end; ++i)
        {
            if (i->state != Resourcelinks::StateNormal)
            {
                continue;
            }
            resourcelinksMap[i->id] = i->data;
        }
    }

    // rules
    {
        std::vector<Rule>::const_iterator i = rules.begin();
        std::vector<Rule>::const_iterator end = rules.end();

        for (; i != end; ++i)
        {
            if (i->state() == Rule::StateDeleted)
            {
                continue;
            }
            QVariantMap map;
            if (ruleToMap(&(*i), map))
            {
                rulesMap[i->id()] = map;
            }
        }
    }

    // scenes
    {
    }

    configToMap(req, configMap);

    rsp.map["lights"] = lightsMap;
    rsp.map["groups"] = groupsMap;
    rsp.map["schedules"] = schedulesMap;
    rsp.map["scenes"] = scenesMap;
    rsp.map["sensors"] = sensorsMap;
    rsp.map["rules"] = rulesMap;
    rsp.map["config"] = configMap;
    rsp.map["resourcelinks"] = resourcelinksMap;
    rsp.etag = gwConfigEtag;
    rsp.httpStatus = HttpStatusOk;
    return REQ_READY_SEND;
}

/*! GET /api/<apikey>/config
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::getConfig(const ApiRequest &req, ApiResponse &rsp)
{
    checkRfConnectState();

    // handle ETag
    if (req.hdr.hasKey("If-None-Match"))
    {
        QString etag = req.hdr.value("If-None-Match");

        if (gwConfigEtag == etag)
        {
            rsp.httpStatus = HttpStatusNotModified;
            rsp.etag = etag;
            return REQ_READY_SEND;
        }
    }

    configToMap(req, rsp.map);
    rsp.httpStatus = HttpStatusOk;
    rsp.etag = gwConfigEtag;
    return REQ_READY_SEND;
}

/*! GET /api/config
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::getBasicConfig(const ApiRequest &req, ApiResponse &rsp)
{
    checkRfConnectState();

    // handle ETag
    if (req.hdr.hasKey("If-None-Match"))
    {
        QString etag = req.hdr.value("If-None-Match");

        if (gwConfigEtag == etag)
        {
            rsp.httpStatus = HttpStatusNotModified;
            rsp.etag = etag;
            return REQ_READY_SEND;
        }
    }
    basicConfigToMap(rsp.map);

    // include devicename attribute in web based requests
    if (!apsCtrl->getParameter(deCONZ::ParamDeviceName).isEmpty() && req.hdr.hasKey("User-Agent"))
    {
        const QString ua = req.hdr.value("User-Agent");
        if (ua.startsWith(QLatin1String("Mozilla"))) // all browser UA start with Mozilla/5.0
        {
            rsp.map["devicename"] = apsCtrl->getParameter(deCONZ::ParamDeviceName);
        }
    }

    // add more details if this was requested from discover page
    // this should speedup multi-gateway discovery
    if (!gateways.empty())
    {
        // restrict info TODO more limited "Origin"
        QString referer = req.hdr.value(QLatin1String("Referer"));
        if (referer.contains(QLatin1String("js/scanner-worker.js")))
        {
            QVariantList ls;
            for (const Gateway *gw : gateways)
            {
                DBG_Assert(gw);
                if (gw)
                {
                    QVariantMap g;
                    g["host"] = gw->address().toString();
                    g["port"] = gw->port();
                    ls.push_back(g);
                }
            }

            if (!ls.empty())
            {
                rsp.map["gateways"] = ls;
            }
        }
    }

    rsp.httpStatus = HttpStatusOk;
    rsp.etag = gwConfigEtag;
    return REQ_READY_SEND;
}

/*! GET /api/config/zigbee
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::getZigbeeConfig(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)

    getZigbeeConfigDb(rsp.list);

    rsp.httpStatus = HttpStatusOk;
    //rsp.etag = gwConfigEtag;
    return REQ_READY_SEND;
}

/*! PUT /api/config/zigbee/<id>

    Activates a certain known zigbee configuration.

    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::putZigbeeConfig(const ApiRequest &req, ApiResponse &rsp)
{
    getZigbeeConfigDb(rsp.list);

    QVariantMap cfg;
    const QString id = req.path[4];
    for (const QVariant &c : rsp.list)
    {
        if (c.toMap().value(QLatin1String("id")) == id)
        {
            cfg = c.toMap();
            break;
        }
    }

    const std::vector<const char*> requiredFields = {
        "deviceType", "panId", "extPanId", "apsUseExtPanId", "macAddress", "staticNwkAddress",
        "nwkAddress", "curChannel", "tcAddress", "networkKey", "nwkUpdateId"
    };

    bool ok = true;

    for (const auto *key : requiredFields)
    {
        if (!cfg.contains(QLatin1String(key)))
        {
            ok = false;
            break;
        }
    }

    if (!ok)
    {
        rsp.httpStatus = HttpStatusNotFound;
        return REQ_READY_SEND;
    }

    quint8 deviceType = ok ? cfg["deviceType"].toUInt(&ok) : 0;
    if (ok && deviceType != deCONZ::Coordinator) { ok = false; } // only coordinator supported currently

    quint16 panId =  ok ? cfg["panId"].toString().toUShort(&ok, 16) : 0;
    if (ok && panId == 0) { ok = false; }

    quint64 extPanId =  ok ? cfg["extPanId"].toString().toULongLong(&ok, 16) : 0;
    if (ok && extPanId == 0) { ok = false; }

    quint64 apsUseExtPanId = ok ? cfg["apsUseExtPanId"].toString().toULongLong(&ok, 16) : 1;
    if (ok && apsUseExtPanId != 0) { ok = false; } // must be zero

    quint64 curMacAddress = apsCtrl->getParameter(deCONZ::ParamMacAddress);
    quint64 macAddress =  ok ? cfg["macAddress"].toString().toULongLong(&ok, 16) : 0;
    if (ok && macAddress == 0) { ok = false; }

    quint8 staticNwkAddress = cfg["staticNwkAddress"].toBool() ? 1 : 0;
    quint16 nwkAddress = cfg["nwkAddress"].toString().toUInt(&ok, 16);
    if (ok && nwkAddress != 0x0000) { ok = false; } // coordinator

    //map["channelMask"] = channelMask;
    quint8 curChannel = ok ? cfg["curChannel"].toUInt(&ok) : 0;
    if (ok && (curChannel < 11 || curChannel > 26)) { ok = false; }

    quint8 securityMode = 3; // High - No Master but TC Link key

    quint64 tcAddress =  ok ? cfg["tcAddress"].toString().toULongLong(&ok, 16) : 0;
    if (ok && tcAddress != macAddress)
    {
        tcAddress = macAddress; // auto correct
    }
    QByteArray nwkKey = QByteArray::fromHex(cfg["networkKey"].toByteArray());

    cfg["tcLinkKey"] = QLatin1String("5a6967426565416c6c69616e63653039"); // HA default TC link key

    QByteArray tcLinkKey = QByteArray::fromHex(cfg["tcLinkKey"].toByteArray());

    quint8 nwkUpdateId = ok ? cfg["nwkUpdateId"].toUInt(&ok) : 0;

    if (!ok)
    {
        rsp.httpStatus = HttpStatusNotFound;
        return REQ_READY_SEND;
    }

    apsCtrl->setParameter(deCONZ::ParamDeviceType, deviceType);
    apsCtrl->setParameter(deCONZ::ParamPredefinedPanId, 1);
    apsCtrl->setParameter(deCONZ::ParamPANID, panId);
    apsCtrl->setParameter(deCONZ::ParamExtendedPANID, extPanId);
    apsCtrl->setParameter(deCONZ::ParamApsUseExtendedPANID, apsUseExtPanId);
    if (curMacAddress != macAddress)
    {
        apsCtrl->setParameter(deCONZ::ParamCustomMacAddress, 1);
    }
    apsCtrl->setParameter(deCONZ::ParamMacAddress, macAddress);
    apsCtrl->setParameter(deCONZ::ParamStaticNwkAddress, staticNwkAddress);
    apsCtrl->setParameter(deCONZ::ParamNwkAddress, nwkAddress);

    // channelMask
    apsCtrl->setParameter(deCONZ::ParamCurrentChannel, curChannel);
    apsCtrl->setParameter(deCONZ::ParamSecurityMode, securityMode);
    apsCtrl->setParameter(deCONZ::ParamTrustCenterAddress, tcAddress);
    apsCtrl->setParameter(deCONZ::ParamNetworkKey, nwkKey);
    apsCtrl->setParameter(deCONZ::ParamTrustCenterLinkKey, tcLinkKey);
    apsCtrl->setParameter(deCONZ::ParamNetworkUpdateId, nwkUpdateId);

    // HA endpoint
    QVariantMap endpoint1;
    endpoint1["endpoint"] = QLatin1String("0x01");
    endpoint1["profileId"] = QLatin1String("0x0104");
    endpoint1["deviceId"] = QLatin1String("0x05");
    endpoint1["deviceVersion"] = QLatin1String("0x01");
    endpoint1["inClusters"] = QVariantList({"0x0000" , "0x000A", "0x0019"});
    endpoint1["outClusters"] = QVariantList({"0x0500"});
    endpoint1["index"] = static_cast<double>(0);

    // green power endpoint
    QVariantMap endpoint2;
    endpoint2["endpoint"] = QLatin1String("0xf2");
    endpoint2["profileId"] = QLatin1String("0xA1E0");
    endpoint2["deviceId"] = QLatin1String("0x0064");
    endpoint2["deviceVersion"] = QLatin1String("0x01");
    endpoint2["inClusters"] = QVariantList();
    endpoint2["outClusters"] = QVariantList({ "0x0021"});
    endpoint2["index"] = static_cast<double>(1);

    apsCtrl->setParameter(deCONZ::ParamHAEndpoint, endpoint1);
    apsCtrl->setParameter(deCONZ::ParamHAEndpoint, endpoint2);

    needRestartApp = true;
    QTimer::singleShot(SET_ENDPOINTCONFIG_DURATION, this, SLOT(restartAppTimerFired()));

    if (gwZigbeeChannel != curChannel)
    {
        gwZigbeeChannel = curChannel;
        saveDatabaseItems |= DB_CONFIG;
    }
    updateZigBeeConfigDb(); // put new entry in database as latest valid configuration

    QVariantMap rspItem;
    QVariantMap rspItemState;

    rsp.list.clear();

    rspItemState[QString("/config/zigbee/%1").arg(id)] = "restoring";
    rspItem["success"] = rspItemState;

    rsp.list.append(rspItem);

    rsp.httpStatus = HttpStatusOk;

    return REQ_READY_SEND;
}

/*! GET /api/challenge
    Creates a new authentication challenge which should be used as HMAC-Sha256(challenge, install code).
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::getChallenge(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    QDateTime now = QDateTime::currentDateTime();

    if (!apsCtrl || (gwLastChallenge.isValid() && gwLastChallenge.secsTo(now) < 5))
    {
        rsp.httpStatus = HttpStatusServiceUnavailable;
        rsp.list.append(errorToMap(ERR_RESOURCE_NOT_AVAILABLE, QString("/api/challenge"), QString("too many requests, try again later")));
        return REQ_READY_SEND;
    }

    qsrand(static_cast<uint>(time(nullptr)));
    QByteArray challange;

    for (int i = 0; i < 64; i++)
    {
        challange.append(QString::number(qrand()));
    }

    gwLastChallenge = now;
    gwChallenge = QCryptographicHash::hash(challange, QCryptographicHash::Sha256).toHex();
    rsp.map["challenge"] = gwChallenge;
    rsp.httpStatus = HttpStatusOk;

    return REQ_READY_SEND;
}

/*! PUT, PATCH /api/<apikey>/config
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::modifyConfig(const ApiRequest &req, ApiResponse &rsp)
{
    bool ok;
    bool changed = false;
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();

    DBG_Assert(apsCtrl);

    if (!apsCtrl)
    {
        return REQ_NOT_HANDLED;
    }

    rsp.httpStatus = HttpStatusOk;

    if (!ok || map.isEmpty())
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_INVALID_JSON, "", "body contains invalid JSON"));
        return REQ_READY_SEND;
    }

    if (map.contains("name")) // optional
    {
        if ((map["name"].type() != QVariant::String) ||
            (map["name"].toString().length() > 16)) // TODO allow longer names
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/name"), QString("invalid value, %1, for parameter, name").arg(map["name"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        QString name = map["name"].toString();

        if (gwName != name)
        {
            gwName = name;

            if (gwName.isEmpty())
            {
                gwName = GW_DEFAULT_NAME;
            }
            changed = true;
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/name"] = gwName;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);

        // sync database
        gwConfig["name"] = gwName;
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
    }

    if (map.contains("rfconnected")) // optional
    {
        if (map["rfconnected"].type() != QVariant::Bool)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/rfconnected"), QString("invalid value, %1, for parameter, rfconnected").arg(map["rfconnected"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        // don't change network state if touchlink is busy
        if (touchlinkState != TL_Idle)
        {
            rsp.list.append(errorToMap(ERR_INTERNAL_ERROR, QString("/config/rfconnected"), QString("Internal error, %1").arg(ERR_BRIDGE_BUSY)));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        bool rfconnected = map["rfconnected"].toBool();

        if (gwRfConnected != rfconnected)
        {
            gwRfConnected = rfconnected;
            changed = true;
        }

        // also check if persistent settings changed
        if (gwRfConnectedExpected != rfconnected)
        {
            gwRfConnectedExpected = rfconnected;
            queSaveDb(DB_CONFIG, DB_LONG_SAVE_DELAY);
        }

        if (apsCtrl->setNetworkState(gwRfConnected ? deCONZ::InNetwork : deCONZ::NotInNetwork) == deCONZ::Success)
        {
            QVariantMap rspItem;
            QVariantMap rspItemState;
            rspItemState["/config/rfconnected"] = gwRfConnected;
            rspItem["success"] = rspItemState;
            rsp.list.append(rspItem);
        }
        else
        {
            rsp.list.append(errorToMap(ERR_DEVICE_OFF, QString("/config/rfconnected"), QString("Error, rfconnected, is not modifiable. Device is set to off.")));
        }
    }

    if (map.contains("updatechannel")) // optional
    {
        QString updatechannel = map["updatechannel"].toString();

        if ((map["updatechannel"].type() != QVariant::String) ||
               ! ((updatechannel == "stable") ||
                  (updatechannel == "alpha") ||
                  (updatechannel == "beta")))
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/updatechannel"), QString("invalid value, %1, for parameter, updatechannel").arg(map["updatechannel"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwUpdateChannel != updatechannel)
        {
            gwUpdateChannel = updatechannel;
            gwUpdateVersion = GW_SW_VERSION; // will be replaced by discovery handler
            changed = true;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/updatechannel"] = updatechannel;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("permitjoin")) // optional
    {
        int seconds = map["permitjoin"].toInt(&ok);
        if (!ok || !(seconds >= 0))
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/permitjoin"), QString("invalid value, %1, for parameter, permitjoin").arg(map["permitjoin"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwPermitJoinResend != seconds)
        {
            gwPermitJoinResend = seconds;
            changed = true;
        }

        if (seconds > 0)
        {
            startSearchLights();
            startSearchSensors();
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/permitjoin"] = static_cast<double>(seconds);
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("groupdelay")) // optional
    {
        int milliseconds = map["groupdelay"].toInt(&ok);
        if (!ok || !((milliseconds >= 0) && (milliseconds <= MAX_GROUP_SEND_DELAY)))
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/groupdelay"), QString("invalid value, %1, for parameter, groupdelay").arg(map["groupdelay"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwGroupSendDelay != milliseconds)
        {
            gwGroupSendDelay = milliseconds;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
            changed = true;
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/groupdelay"] = static_cast<double>(milliseconds);
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("rgbwdisplay")) // optional
    {
        QString rgbwDisplay = map["rgbwdisplay"].toString();
        if (rgbwDisplay != "1" && rgbwDisplay != "2")
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/rgbwdisplay"), QString("invalid value, %1, for parameter, rgbwdisplay").arg(map["rgbwdisplay"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwRgbwDisplay != rgbwDisplay)
        {
            gwRgbwDisplay = rgbwDisplay;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
            changed = true;
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/rgbwdisplay"] = rgbwDisplay;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("otauactive")) // optional
    {
        bool otauActive = map["otauactive"].toBool();

        if (map["otauactive"].type() != QVariant::Bool)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/otauactive"), QString("invalid value, %1, for parameter, otauactive").arg(map["otauactive"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (isOtauActive() != otauActive)
        {
            changed = true;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }

        apsCtrl->setParameter(deCONZ::ParamOtauActive, otauActive ? 1 : 0);

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/otauactive"] = otauActive;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("homebridgeupdate")) // optional
    {
        bool homebridgeUpdate = map["homebridgeupdate"].toBool();

        if (map["homebridgeupdate"].type() != QVariant::Bool)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/homebridgeupdate"), QString("invalid value, %1, for parameter, homebridgeupdate").arg(map["homebridgeupdate"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwHomebridgeUpdate != homebridgeUpdate)
        {
            gwHomebridgeUpdate = homebridgeUpdate;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/homebridgeupdate"] = homebridgeUpdate;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("discovery")) // optional
    {
        bool discovery = map["discovery"].toBool();

        if (map["discovery"].type() != QVariant::Bool)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/discovery"), QString("invalid value, %1, for parameter, discovery").arg(map["discovery"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        int minutes = gwAnnounceInterval;

        if (discovery)
        {
            setInternetDiscoveryInterval(ANNOUNCE_INTERVAL);
        }
        else
        {
            setInternetDiscoveryInterval(0);
        }

        if (minutes != gwAnnounceInterval)
        {
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
            changed = true;
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/discovery"] = discovery;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("unlock")) // optional
    {
        uint seconds = map["unlock"].toUInt(&ok);

        if (!ok || (seconds > MAX_UNLOCK_GATEWAY_TIME))
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/unlock"), QString("invalid value, %1, for parameter, unlock").arg(map["unlock"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        lockGatewayTimer->stop();
        changed = true;

        if (seconds > 0)
        {
            gwLinkButton = true;
            lockGatewayTimer->start(seconds * 1000);
            DBG_Printf(DBG_INFO, "gateway unlocked\n");
        }
        else
        {
            gwLinkButton = false;
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/unlock"] = static_cast<double>(seconds);
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("zigbeechannel")) // optional
    {
        uint zigbeechannel = map["zigbeechannel"].toUInt(&ok);

        if (!ok || ((zigbeechannel != 0) && (zigbeechannel != 11) && (zigbeechannel != 15) && (zigbeechannel != 20) && (zigbeechannel != 25)))
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/zigbeechannel"), QString("invalid value, %1, for parameter, zigbeechannel").arg(map["zigbeechannel"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

            if (startChannelChange(zigbeechannel))
            {
                changed = true;
            }
            else
            {
                // not connected
            }


        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/zigbeechannel"] = static_cast<double>(zigbeechannel);
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("networkopenduration")) // optional
    {
        int seconds = map["networkopenduration"].toInt(&ok);

        if (!ok || seconds < 0 || seconds > UINT16_MAX)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/networkopenduration"), QString("invalid value, %1, for parameter, networkopenduration").arg(map["networkopenduration"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwNetworkOpenDuration != seconds)
        {
            DBG_Printf(DBG_INFO, "set gwNetworkOpenDuration to: %u\n", seconds);
            gwNetworkOpenDuration = static_cast<quint16>(seconds);
            changed = true;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/networkopenduration"] = static_cast<double>(seconds);
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("timezone")) // optional
    {
        QString timezone = map["timezone"].toString();

        if (map["timezone"].type() != QVariant::String)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/timezone"), QString("invalid value, %1, for parameter, timezone").arg(map["timezone"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwTimezone != timezone)
        {
            gwTimezone = timezone;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
            changed = true;
#ifdef ARCH_ARM
            const QString tzFilespec = QString(":") + timezone;
            int rc = setenv("TZ", qPrintable(tzFilespec), 1);
            tzset();

            //also set zoneinfo on RPI
            //char param1[100];
            //strcpy(param1, "/usr/share/zoneinfo/");
            //strcpy(param1, qPrintable(timezone));

            //if (symlink(param1, "/etc/localtime") == -1)
            //{
                //DBG_Printf(DBG_INFO, "Create symlink to timezone failed with errno: %s\n", strerror(errno));
                //rsp.list.append(errorToMap(ERR_INTERNAL_ERROR, QString("/config/timezone"), QString("Link timezone failed with errno: %1\n").arg(strerror(errno))));
                //rsp.httpStatus = HttpStatusServiceUnavailable;
                //return REQ_READY_SEND;
            //}

            if (rc != 0)
            {
                rsp.list.append(errorToMap(ERR_INTERNAL_ERROR, QString("/config/timezone"), QString("Error setting timezone")));
                rsp.httpStatus = HttpStatusServiceUnavailable;
                return REQ_READY_SEND;
            }
#endif
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/timezone"] = timezone;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    // old versions used lower case utc, support both styles
    if (map.contains("UTC") && !map.contains("utc"))
    {
        map["utc"] = map["UTC"];
    }

    if (map.contains("utc")) // optional
    {
        bool error = false;
        if ((map["utc"].type() != QVariant::String))
        {
            error = true;
        }
        else
        {
            QDateTime utc = QDateTime::fromString(map["utc"].toString(),"yyyy-MM-ddTHH:mm:ss");
            if (!utc.isValid() || map["utc"].toString().length() != 19)
            {
                error = true;
            }
        }

        if (error)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/utc"), QString("invalid value, %1, for parameter, utc").arg(map["utc"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

#ifdef ARCH_ARM
        int ret = 0;
        std::string date = map["utc"].toString().toStdString();

        time_t mytime = time(0);
        struct tm* tm_ptr = gmtime(&mytime); // gmtime instead localtime

        if (tm_ptr)
        {
            tm_ptr->tm_year = atoi(date.substr(0,4).c_str()) - 1900;
            tm_ptr->tm_mon  = atoi(date.substr(5,2).c_str()) - 1;
            tm_ptr->tm_mday = atoi(date.substr(8,2).c_str());
            tm_ptr->tm_hour  = atoi(date.substr(11,2).c_str());
            tm_ptr->tm_min  = atoi(date.substr(14,2).c_str());
            tm_ptr->tm_sec  = atoi(date.substr(17,2).c_str());

            const struct timeval tv = {mktime(tm_ptr), 0};
            ret = settimeofday(&tv, NULL);
        }

        if (ret != 0)
        {
            rsp.list.append(errorToMap(ERR_INTERNAL_ERROR, QString("/config/utc"), QString("Error setting date and time")));
            rsp.httpStatus = HttpStatusServiceUnavailable;
            return REQ_READY_SEND;
        }
#endif
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/utc"] = map["utc"];
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);

    }

    if (map.contains("localtime")) // optional
    {
        bool error = false;
        if ((map["localtime"].type() != QVariant::String))
        {
            error = true;
        }
        else
        {
            QDateTime localtime = QDateTime::fromString(map["localtime"].toString(),"yyyy-MM-ddTHH:mm:ss");
            if (!localtime.isValid() || map["localtime"].toString().length() != 19)
            {
                error = true;
            }
        }

        if (error)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/localtime"), QString("invalid value, %1, for parameter, utc").arg(map["localtime"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

#ifdef ARCH_ARM
        int ret = 0;
        std::string date = map["localtime"].toString().toStdString();

        time_t mytime = time(0);
        struct tm* tm_ptr = localtime(&mytime);
        if (tm_ptr)
        {
            tm_ptr->tm_year = atoi(date.substr(0,4).c_str()) - 1900;
            tm_ptr->tm_mon  = atoi(date.substr(5,2).c_str()) - 1;
            tm_ptr->tm_mday = atoi(date.substr(8,2).c_str());
            tm_ptr->tm_hour  = atoi(date.substr(11,2).c_str());
            tm_ptr->tm_min  = atoi(date.substr(14,2).c_str());
            tm_ptr->tm_sec  = atoi(date.substr(17,2).c_str());

            const struct timeval tv = {mktime(tm_ptr), 0};
            ret = settimeofday(&tv, NULL);
        }

        if (ret != 0)
        {
            rsp.list.append(errorToMap(ERR_INTERNAL_ERROR, QString("/config/localtime"), QString("Error setting date and time")));
            rsp.httpStatus = HttpStatusServiceUnavailable;
            return REQ_READY_SEND;
        }
#endif
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/localtime"] = map["localtime"];
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);

    }

    if (map.contains("timeformat")) // optional
    {
        QString timeFormat = map["timeformat"].toString();

        if ((map["timeformat"].type() != QVariant::String) ||
               !((timeFormat == "12h") || (timeFormat == "24h"))
           )
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/timeformat"), QString("invalid value, %1, for parameter, timeformat").arg(map["timeformat"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwTimeFormat != timeFormat)
        {
            gwTimeFormat = timeFormat;
            changed = true;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/timeformat"] = timeFormat;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("websocketnotifyall")) // optional
    {
        bool notifyAll = map["websocketnotifyall"].toBool();

        if (gwWebSocketNotifyAll != notifyAll)
        {
            gwWebSocketNotifyAll = notifyAll;
            changed = true;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/websocketnotifyall"] = notifyAll;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (map.contains("disablePermitJoinAutoOff")) // optional
    {
        bool v = map["disablePermitJoinAutoOff"].toBool();

        if (gwdisablePermitJoinAutoOff != v)
        {
            gwdisablePermitJoinAutoOff = v;
            changed = true;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        }
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/disablePermitJoinAutoOff"] = v;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }
    if (map.contains("lightlastseeninterval")) // optional
    {
        int lightLastSeen = map["lightlastseeninterval"].toInt(&ok);
        if (!ok || lightLastSeen <= 0 || lightLastSeen > 65535)
        {
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/lightlastseeninterval"), QString("invalid value, %1, for parameter, lightlastseeninterval").arg(map["lightlastseeninterval"].toString())));
            rsp.httpStatus = HttpStatusBadRequest;
            return REQ_READY_SEND;
        }

        if (gwLightLastSeenInterval != lightLastSeen)
        {
            gwLightLastSeenInterval = lightLastSeen;
            queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
            changed = true;
        }

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/lightlastseeninterval"] = lightLastSeen;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }

    if (changed)
    {
        updateEtag(gwConfigEtag);
    }

    rsp.etag = gwConfigEtag;

    return REQ_READY_SEND;
}

/*! DELETE /api/<apikey>/config/whitelist/<username2>
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::deleteUser(const ApiRequest &req, ApiResponse &rsp)
{
    QString username2 = req.path[4];

    std::vector<ApiAuth>::iterator i = apiAuths.begin();
    std::vector<ApiAuth>::iterator end = apiAuths.end();

    // TODO compare error not found on hue bridge

    for (; i != end; ++i)
    {
        if (username2 == i->apikey && i->state == ApiAuth::StateNormal)
        {
            i->needSaveDatabase = true;
            i->state = ApiAuth::StateDeleted;
            queSaveDb(DB_AUTH, DB_LONG_SAVE_DELAY);

            QVariantMap rspItem;
            rspItem["success"] = QString("/config/whitelist/%1 deleted.").arg(username2);
            rsp.list.append(rspItem);
            rsp.httpStatus = HttpStatusOk;

            return REQ_READY_SEND;
        }
    }

    rsp.str = "[]"; // empty
    rsp.httpStatus = HttpStatusOk;
    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/update
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::updateSoftware(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    rsp.httpStatus = HttpStatusOk;
    QVariantMap rspItem;
    QVariantMap rspItemState;
    if (gwSwUpdateState != swUpdateState.transferring)
    {
        gwSwUpdateState = swUpdateState.transferring;
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
        pollSwUpdateStateTimer->start(5000);
    }

    rspItemState["/config/update"] = gwUpdateVersion;
#ifdef ARCH_ARM
    rspItemState["/config/swupdate2/state"] = gwSwUpdateState;
#endif
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);

    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/restart
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::restartGateway(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    rsp.httpStatus = HttpStatusOk;
    QVariantMap rspItem;
    QVariantMap rspItemState;
    rspItemState["/config/restart"] = true;
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);

#ifdef ARCH_ARM
        openDb();
        saveDb();
        closeDb();

        QTimer *restartTimer = new QTimer(this);
        restartTimer->setSingleShot(true);
        connect(restartTimer, SIGNAL(timeout()),
                this, SLOT(restartGatewayTimerFired()));
        restartTimer->start(500);
#endif // ARCH_ARM

    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/restartapp
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::restartApp(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    rsp.httpStatus = HttpStatusOk;
    QVariantMap rspItem;
    QVariantMap rspItemState;
    rspItemState["/config/restartapp"] = true;
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);

    openDb();
    saveDb();
    closeDb();

    QTimer *restartTimer = new QTimer(this);
    restartTimer->setSingleShot(true);
    connect(restartTimer, SIGNAL(timeout()),
            this, SLOT(simpleRestartAppTimerFired()));
    restartTimer->start(500);

    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/shutdown
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::shutDownGateway(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    rsp.httpStatus = HttpStatusOk;
    QVariantMap rspItem;
    QVariantMap rspItemState;
    rspItemState["/config/shutdown"] = true;
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);

#ifdef ARCH_ARM
        openDb();
        saveDb();
        closeDb();

        QTimer *shutdownTimer = new QTimer(this);
        shutdownTimer->setSingleShot(true);
        connect(shutdownTimer, SIGNAL(timeout()),
                this, SLOT(shutDownGatewayTimerFired()));
        shutdownTimer->start(500);
#endif // ARCH_ARM

    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/updatefirmware
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::updateFirmware(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    if (startUpdateFirmware())
    {
        rsp.httpStatus = HttpStatusOk;
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/updatefirmware"] = gwFirmwareVersionUpdate;
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }
    else
    {
        rsp.httpStatus = HttpStatusServiceUnavailable;
    }

    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/export
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::exportConfig(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)
    if (exportConfiguration())
    {
        rsp.httpStatus = HttpStatusOk;
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/export"] = "success";
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
    }
    else
    {
        rsp.httpStatus = HttpStatusServiceUnavailable;
    }

    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/import
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::importConfig(const ApiRequest &req, ApiResponse &rsp)
{

    if (importConfiguration())
    {
        openDb();
        saveApiKey(req.apikey());
        closeDb();

        rsp.httpStatus = HttpStatusOk;
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/import"] = "success";
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);

        needRestartApp = true;
        QTimer *restartTimer = new QTimer(this);
        restartTimer->setSingleShot(true);
        connect(restartTimer, SIGNAL(timeout()),
                this, SLOT(restartAppTimerFired()));
        restartTimer->start(SET_ENDPOINTCONFIG_DURATION);

    }
    else
    {
        rsp.httpStatus = HttpStatusServiceUnavailable;
    }


    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/reset
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::resetConfig(const ApiRequest &req, ApiResponse &rsp)
{
    bool resetGW = false;
    bool deleteDB = false;
    bool ok;
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();

    if (!ok || map.isEmpty())
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_INVALID_JSON, "", "body contains invalid JSON"));
        return REQ_READY_SEND;
    }

    if ((!map.contains("resetGW")) || (!map.contains("deleteDB")))
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_MISSING_PARAMETER, "/config/reset", "missing parameters in body"));
        return REQ_READY_SEND;
    }

    if (map["resetGW"].type() != QVariant::Bool)
    {
        rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/reset"), QString("invalid value, %1, for parameter, resetGW").arg(map["resetGW"].toString())));
        rsp.httpStatus = HttpStatusBadRequest;
        return REQ_READY_SEND;
    }
    if (map["deleteDB"].type() != QVariant::Bool)
    {
        rsp.list.append(errorToMap(ERR_INVALID_VALUE, QString("/config/reset"), QString("invalid value, %1, for parameter, deleteDB").arg(map["deleteDB"].toString())));
        rsp.httpStatus = HttpStatusBadRequest;
        return REQ_READY_SEND;
    }
    resetGW = map["resetGW"].toBool();
    deleteDB = map["deleteDB"].toBool();

    if (resetConfiguration(resetGW, deleteDB))
    {
        rsp.httpStatus = HttpStatusOk;
        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/reset"] = "success";
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
        //wait some seconds that deCONZ can finish Enpoint config,
        //then restart app to apply network config (only on raspbee gw)

        needRestartApp = true;
        QTimer *restartTimer = new QTimer(this);
        restartTimer->setSingleShot(true);
        connect(restartTimer, SIGNAL(timeout()),
                this, SLOT(restartAppTimerFired()));
        restartTimer->start(SET_ENDPOINTCONFIG_DURATION);

    }
    else
    {
        rsp.httpStatus = HttpStatusServiceUnavailable;
    }

    return REQ_READY_SEND;
}

/*! PUT /api/<apikey>/config/password
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::changePassword(const ApiRequest &req, ApiResponse &rsp)
{
    bool ok;
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();

    rsp.httpStatus = HttpStatusOk;

    if (!ok || map.isEmpty())
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_INVALID_JSON, "/config/password", "body contains invalid JSON"));
        return REQ_READY_SEND;
    }

    if (map.contains("username") && map.contains("oldhash") && map.contains("newhash"))
    {
        QString username = map["username"].toString();
        QString oldhash = map["oldhash"].toString();
        QString newhash = map["newhash"].toString();

        if ((map["username"].type() != QVariant::String) || (username != gwAdminUserName))
        {
            rsp.httpStatus = HttpStatusUnauthorized;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/password", QString("invalid value, %1 for parameter, username").arg(username)));
            return REQ_READY_SEND;
        }

        if ((map["oldhash"].type() != QVariant::String) || oldhash.isEmpty())
        {
            rsp.httpStatus = HttpStatusUnauthorized;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/password", QString("invalid value, %1 for parameter, oldhash").arg(oldhash)));
            return REQ_READY_SEND;
        }

        if ((map["newhash"].type() != QVariant::String) || newhash.isEmpty())
        {
            rsp.httpStatus = HttpStatusBadRequest;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/password", QString("invalid value, %1 for parameter, newhash").arg(newhash)));
            return REQ_READY_SEND;
        }

        QString enc = encryptString(oldhash);

        if (enc != gwAdminPasswordHash)
        {
            rsp.httpStatus = HttpStatusUnauthorized;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/password", QString("invalid value, %1 for parameter, oldhash").arg(oldhash)));
            return REQ_READY_SEND;
        }

        // username and old hash are okay
        // take the new hash and salt it
        enc = encryptString(newhash);
        gwAdminPasswordHash = enc;
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);

        DBG_Printf(DBG_INFO, "Updated password hash: %s\n", qPrintable(enc));

        QVariantMap rspItem;
        QVariantMap rspItemState;
        rspItemState["/config/password"] = "changed";
        rspItem["success"] = rspItemState;
        rsp.list.append(rspItem);
        return REQ_READY_SEND;
    }
    else
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_MISSING_PARAMETER, "/config/password", "missing parameters in body"));
        return REQ_READY_SEND;
    }

    return REQ_READY_SEND;
}

/*! DELETE /api/config/password
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::deletePassword(const ApiRequest &req, ApiResponse &rsp)
{
    // reset only allowed for certain referers
    bool ok = true;
    QString referer = req.hdr.value(QLatin1String("Referer"));
    if (referer.isEmpty() || !(referer.contains(QLatin1String("login.html")) || referer.contains(QLatin1String("login2.html"))))
    {
        ok = false;
    }

    // reset only allowed within first 10 minutes after startup
    if (ok && getUptime() > 600)
    {
        ok = false;
    }

    if (!ok)
    {
        rsp.httpStatus = HttpStatusForbidden;
        rsp.list.append(errorToMap(ERR_UNAUTHORIZED_USER, "/" + req.path.join("/"), "unauthorized user"));
        return REQ_READY_SEND;
    }

    // create default password
    gwConfig.remove("gwusername");
    gwConfig.remove("gwpassword");

    initAuthentication();

    rsp.httpStatus = HttpStatusOk;
    return REQ_READY_SEND;
}

/*! Locks the gateway.
 */
void DeRestPluginPrivate::lockGatewayTimerFired()
{
    if (gwLinkButton)
    {
        gwLinkButton = false;
        updateEtag(gwConfigEtag);
        DBG_Printf(DBG_INFO, "gateway locked\n");
    }
}

/*! Helper to update the config Etag then rfconnect state changes.
 */
void DeRestPluginPrivate::checkRfConnectState()
{
    if (apsCtrl)
    {
        // while touchlink is active always report connected: true
        if (isTouchlinkActive())
        {
            if (!gwRfConnected)
            {
                gwRfConnected = true;
                updateEtag(gwConfigEtag);
            }
        }
        else
        {
            bool connected = isInNetwork();

            if (connected != gwRfConnected)
            {
                gwRfConnected = connected;
                updateEtag(gwConfigEtag);
            }
        }

        const quint32 fwVersion = apsCtrl->getParameter(deCONZ::ParamFirmwareVersion);
        QString str = QString("0x%1").arg(fwVersion, 8, 16, QLatin1Char('0'));

        if (gwFirmwareVersion != str)
        {
            gwFirmwareVersion = str;
            gwConfig["fwversion"] = str;
            updateEtag(gwConfigEtag);
        }

        // upgrade setting if needed
        if (!gwRfConnectedExpected && gwRfConnected)
        {
            gwRfConnectedExpected = true;
            queSaveDb(DB_CONFIG, DB_LONG_SAVE_DELAY);
        }
    }
}

/*! GET /api/config/wifi
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::getWifiState(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)

    rsp.map["wifi"] = gwWifi;
    rsp.map["wifitype"] = gwWifiType;
    rsp.map["wifiname"] = gwWifiName;
    rsp.map["wifichannel"] = gwWifiChannel;
    rsp.map["wifiip"] = gwWifiIp;
    rsp.map["state"] = gwWifiStateString;
    rsp.map["type"] = gwWifiType;
    rsp.map["ip"] = gwWifiIp;
    rsp.map["name"] = gwWifiName;
    rsp.map["pw"] = QString();
    rsp.map["workingtype"] = gwWifiWorkingType;
    rsp.map["workingname"] = gwWifiWorkingName;
    rsp.map["workingpw"] = QString();
    // rsp.map["wifiappw"] = gwWifiPw;
    // rsp.map["wifiappw"] = QString();
    rsp.map["wifiavailable"] = gwWifiAvailable;
    rsp.map["lastupdated"] = gwWifiLastUpdated;
    rsp.map["eth0"] = gwWifiEth0;
    rsp.map["wlan0"] = gwWifiWlan0;
    rsp.map["active"] = gwWifiActive;

    rsp.httpStatus = HttpStatusOk;

    return REQ_READY_SEND;
}

/*! PUT /api/config/wifi
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::configureWifi(const ApiRequest &req, ApiResponse &rsp)
{
    bool ok;
    bool changed = false;
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();

    rsp.httpStatus = HttpStatusOk;

    if (!ok || map.isEmpty())
    {
        rsp.httpStatus = HttpStatusBadRequest;
        rsp.list.append(errorToMap(ERR_INVALID_JSON, "/config/wifi", "body contains invalid JSON"));
        return REQ_READY_SEND;
    }

    if (map.contains("pageactive"))
    {
        bool active = map["pageactive"].toBool();

        if (map["pageactive"].type() != QVariant::Bool)
        {
            rsp.httpStatus = HttpStatusBadRequest;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/wifi", QString("invalid value, %1 for parameter, pageactive").arg(active)));
            return REQ_READY_SEND;
        }

        if (active)
        {
            if (wifiPageActiveTimer->isActive())
            {
                wifiPageActiveTimer->stop();
                wifiPageActiveTimer->start(6000);
            }
            else
            {
                if (!gwWifiPageActive)
                {
                    gwWifiPageActive = true;
                    queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
                    wifiPageActiveTimer->start(6000);
                }
            }
        }
    }

    if (map.contains("type"))
    {
        QString type = map["type"].toString();

        if ((map["type"].type() != QVariant::String) || ((type != "accesspoint") && (type != "client")))
        {
            rsp.httpStatus = HttpStatusBadRequest;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/wifi", QString("invalid value, %1 for parameter, type").arg(type)));
            return REQ_READY_SEND;
        }

        if (gwWifiType != type)
        {
            changed = true;
            gwWifiType = type;
            gwWifi = "configured";
        }
    }
    if (map.contains("name"))
    {
        QString name = map["name"].toString();

        if ((map["name"].type() != QVariant::String) || name.isEmpty())
        {
            rsp.httpStatus = HttpStatusBadRequest;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/wifi", QString("invalid value, %1 for parameter, name").arg(name)));
            return REQ_READY_SEND;
        }

        if (gwWifiName != name)
        {
            changed = true;
            gwWifiName = name;
        }
    }
    if (map.contains("password"))
    {
        QString password = map["password"].toString();

        if ((map["password"].type() != QVariant::String) || password.isEmpty())
        {
            rsp.httpStatus = HttpStatusBadRequest;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/wifi", QString("invalid value, %1 for parameter, password").arg(password)));
            return REQ_READY_SEND;
        }

        if (gwWifiPw != password)
        {
            changed = true;
            gwWifiPw = password;
        }
    }
    if (map.contains("wifi"))
    {
        QString wifi = map["wifi"].toString();

        if ((map["wifi"].type() != QVariant::String) || ((wifi != "configured") && (wifi != "not-configured") && (wifi != "new-configured") && (wifi != "deactivated")))
        {
            rsp.httpStatus = HttpStatusBadRequest;
            rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/wifi", QString("invalid value, %1 for parameter, wifi").arg(wifi)));
            return REQ_READY_SEND;
        }
        if (gwWifi != wifi)
        {
            changed = true;
            gwWifi = wifi;
        }
    }

    /*
            if (map.contains("channel"))
            {
                bool ok;
                int channel = map["channel"].toInt(&ok);
                if (ok && channel >= 1 && channel <= 11)
                {
                    gwWifiChannel = channel;
                }
                else
                {
                    rsp.httpStatus = HttpStatusBadRequest;
                    rsp.list.append(errorToMap(ERR_INVALID_VALUE, "/config/wifi", QString("invalid value, %1 for parameter, channel").arg(channel)));
                    return REQ_READY_SEND;
                }
            }
    */

    if (changed)
    {
        QDateTime currentDateTime = QDateTime::currentDateTimeUtc();
        gwWifiLastUpdated = currentDateTime.toTime_t();

        updateEtag(gwConfigEtag);
        queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
    }

    QVariantMap rspItem;
    QVariantMap rspItemState;
    rspItemState["/config/wifi/"] = gwWifi;
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);

    return REQ_READY_SEND;
}

/*! PUT /api/config/wifi/restore
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::restoreWifiConfig(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)

    rsp.httpStatus = HttpStatusOk;
    QVariantMap rspItem;
    QVariantMap rspItemState;
    rspItemState["/config/wifi/restore"] = "original configuration restored";
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);
    return REQ_READY_SEND;
}

/*! PUT /api/config/wifi/scanresult
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::putWifiScanResult(const ApiRequest &req, ApiResponse &rsp)
{
    QHostAddress localHost(QHostAddress::LocalHost);
    rsp.httpStatus = HttpStatusForbidden;

    if (req.sock->peerAddress() != localHost)
    {
        rsp.list.append(errorToMap(ERR_UNAUTHORIZED_USER, "/" + req.path.join("/"), "unauthorized user"));
        return REQ_READY_SEND;
    }

    rsp.httpStatus = HttpStatusOk;

    bool ok;
    QVariant var = Json::parse(req.content, ok);
    if (ok)
    {
        gwWifiAvailable = var.toList();
    }

    return REQ_READY_SEND;
}

/*! PUT /api/config/wifi/updated (wifi service notifications)
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::putWifiUpdated(const ApiRequest &req, ApiResponse &rsp)
{
    QHostAddress localHost(QHostAddress::LocalHost);
    rsp.httpStatus = HttpStatusForbidden;

    if (req.sock->peerAddress() != localHost)
    {
        rsp.list.append(errorToMap(ERR_UNAUTHORIZED_USER, "/" + req.path.join("/"), "unauthorized user"));
        return REQ_READY_SEND;
    }

    pid_t pid = req.path[1].toInt();
    if (gwWifiPID != pid)
    {
        gwWifiPID = pid;
    }

    rsp.httpStatus = HttpStatusOk;

    if (req.content.isEmpty())
    {
        return REQ_READY_SEND;
    }

    // TODO forward events
    bool ok;
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();

    if (!ok || map.isEmpty())
    {
        return REQ_READY_SEND;
    }

    QString status;

    if (map.contains("status"))
    {
        status = map["status"].toString();
    }

    if (status == QLatin1String("current-config") && map.contains("mgmt"))
    {
        quint32 mgmt = map["mgmt"].toUInt();

        if (gwWifiMgmt != mgmt)
        {
            gwWifiMgmt = mgmt;

            if (gwWifiMgmt & WIFI_MGMT_ACTIVE)
            {
                gwWifiActive = QLatin1String("active");
            }
            else
            {
                gwWifiActive = QLatin1String("inactive");
                gwWifiWorkingName = QString();
                gwWifiWorkingType = QString();
            }

            updateEtag(gwConfigEtag);
        }

        QString type;
        QString ssid;

        if (map.contains("type")) { type = map["type"].toString(); }
        if (map.contains("ssid")) { ssid = map["ssid"].toString(); }

        if (gwWifiState == WifiStateInitMgmt)
        {
            gwWifiState = WifiStateIdle;

            if (type == QLatin1String("accesspoint") && !ssid.isEmpty())
            {
                if (gwWifi != QLatin1String("not-configured") && (gwWifiMgmt & WIFI_MGTM_HOSTAPD) == 0)
                {
                    gwWifi = QLatin1String("not-configured"); // not configured by deCONZ
                }

                if (gwWifiMgmt & WIFI_MGMT_ACTIVE)
                {
                    gwWifiActive = QLatin1String("active");
                    gwWifiWorkingName = ssid;
                    gwWifiWorkingType = type;
                }
                else
                {
                    gwWifiActive = QLatin1String("inactive");
                    gwWifiWorkingName = QString();
                    gwWifiWorkingType = QString();
                }
            }

            if (type == QLatin1String("client") && !ssid.isEmpty())
            {
                if (gwWifi != QLatin1String("not-configured") && (gwWifiMgmt & WIFI_MGTM_WPA_SUPPLICANT) == 0)
                {
                    gwWifi = QLatin1String("not-configured"); // not configured by deCONZ
                }

                if (gwWifiMgmt & WIFI_MGMT_ACTIVE)
                {
                    gwWifiActive = QLatin1String("active");
                    gwWifiWorkingName = ssid;
                    gwWifiWorkingType = type;
                }
                else
                {
                    gwWifiActive = QLatin1String("inactive");
                    gwWifiWorkingName = QString();
                    gwWifiWorkingType = QString();
                }
                gwWifiClientName = ssid;
            }

            updateEtag(gwConfigEtag);
        }
    }
    else if (status == QLatin1String("current-config"))
    {
        QString workingtype;
        QString workingname;
        QString workingpw;
        QString wifipw;
        QString wifiname;
        QString wifitype;
        QString wifi;
        QString wifipwenc;
        QString workingpwenc;
        QString wifibackuppwenc;

        if (map.contains("workingtype")) { workingtype = map["workingtype"].toString(); }
        if (map.contains("workingname")) { workingname = map["workingname"].toString(); }
        if (map.contains("workingpw")) { workingpw = map["workingpw"].toString(); }
        if (map.contains("wifipw")) { wifipw = map["wifipw"].toString(); }
        if (map.contains("wifiname")) { wifiname = map["wifiname"].toString(); }
        if (map.contains("wifitype")) { wifitype = map["wifitype"].toString(); }
        if (map.contains("wifi")) { wifi = map["wifi"].toString(); }
        if (map.contains("wifipwenc")) { wifipwenc = map["wifipwenc"].toString(); }
        if (map.contains("workingpwenc")) { workingpwenc = map["workingpwenc"].toString(); }
        if (map.contains("wifibackuppwenc")) { wifibackuppwenc = map["wifibackuppwenc"].toString(); }

        bool changed = false;
        if (!workingtype.isEmpty() && gwWifiWorkingType != workingtype)
        {
            gwWifiWorkingType = workingtype;
            changed = true;
        }

        if (!workingname.isEmpty() && gwWifiWorkingName != workingname)
        {
            gwWifiWorkingName = workingname;
            changed = true;
        }

        if (!workingpw.isEmpty() && gwWifiWorkingPw != workingpw)
        {
            if (gwWifi == "not-configured")
            {
                gwWifiWorkingPw = QString();
            }
            else
            {
                gwWifiWorkingPw = workingpw;
            }
            changed = true;
        }

        if (!wifipw.isEmpty() && gwWifiPw != wifipw)
        {
            if (gwWifi == "not-configured")
            {
                gwWifiPw = QString();
            }
            else
            {
                gwWifiPw = wifipw;
            }
            changed = true;
        }

        if (!wifiname.isEmpty() && gwWifiName != wifiname)
        {
            gwWifiName = wifiname;
            changed = true;
        }

        if (!wifitype.isEmpty() && gwWifiType != wifitype)
        {
            gwWifiType = wifitype;
            changed = true;
        }

        if (!wifi.isEmpty() && gwWifi != wifi)
        {
            gwWifi = wifi;
            changed = true;
        }

        if (wifi == "not-configured")
        {
            if (!gwWifiPw.isEmpty())
            {
                gwWifiPw = QString();
                changed = true;
            }
            if (!gwWifiWorkingPw.isEmpty())
            {
                gwWifiWorkingPw = QString();
                changed = true;
            }
            if (!gwWifiBackupPw.isEmpty())
            {
                gwWifiBackupPw = QString();
                changed = true;
            }
            if (!gwWifiPwEnc.isEmpty())
            {
                gwWifiPwEnc = QString();
                changed = true;
            }
            if (!gwWifiWorkingPwEnc.isEmpty())
            {
                gwWifiWorkingPwEnc = QString();
                changed = true;
            }
            if (!gwWifiBackupPwEnc.isEmpty())
            {
                gwWifiBackupPwEnc = QString();
                changed = true;
            }
        }

        if (workingtype == "accesspoint")
        {
            if (!workingname.isEmpty() && gwWifiBackupName != workingname)
            {
                gwWifiBackupName = workingname;
                changed = true;
            }
            if (!workingpw.isEmpty() && gwWifiBackupPw != workingpw)
            {
                if (gwWifi == "not-configured")
                {
                    gwWifiBackupPw = QString();
                }
                else
                {
                    gwWifiBackupPw = workingpw;
                }
                changed = true;
            }
        }

        if (!wifipwenc.isEmpty() && gwWifiPwEnc != wifipwenc)
        {
            if (gwWifi == "not-configured")
            {
                gwWifiPwEnc = QString();
            }
            else
            {
                gwWifiPwEnc = wifipwenc;
                gwWifiPw = QString();
            }
            changed = true;
        }

        if (!workingpwenc.isEmpty() && gwWifiWorkingPwEnc != workingpwenc)
        {
            if (gwWifi == "not-configured")
            {
                gwWifiWorkingPwEnc = QString();
            }
            else
            {
                gwWifiWorkingPwEnc = workingpwenc;
                gwWifiWorkingPw = QString();
            }
            changed = true;
        }

        if (!wifibackuppwenc.isEmpty() && gwWifiBackupPwEnc != wifibackuppwenc)
        {
            if (gwWifi == "not-configured")
            {
                gwWifiBackupPwEnc = QString();
            }
            else
            {
                gwWifiBackupPwEnc = wifibackuppwenc;
                gwWifiBackupPw = QString();
            }
            changed = true;
        }

        if (changed)
        {
            updateEtag(gwConfigEtag);
            queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
        }
    }

    else if (status == QLatin1String("got-ip"))
    {
        QString ip = map["ipv4"].toString();

        if (!ip.isEmpty() && gwWifiIp != ip)
        {
            if (gwWifiActive != QLatin1String("active"))
            {
                gwWifiActive = QLatin1String("active");
            }

            gwWifiIp = ip;
            updateEtag(gwConfigEtag);
        }

        if (gwWifiWlan0 != ip)
        {
            if (ip.isEmpty())
            {
                gwWifiWlan0 = QString();
            }
            else
            {
                gwWifiWlan0 = ip;
            }
            updateEtag(gwConfigEtag);
        }
    }
    else if (status == QLatin1String("got-ip-eth0"))
    {
        QString ip = map["ipv4"].toString();

        if (gwWifiEth0 != ip)
        {
            if (ip.isEmpty())
            {
                gwWifiEth0 = QString();
            }
            else
            {
                gwWifiEth0 = ip;
            }
            updateEtag(gwConfigEtag);
        }
    }
    else if (status == QLatin1String("ap-connecting") && gwWifiStateString != QLatin1String("ap-connecting"))
    {
        gwWifiStateString = QLatin1String("ap-connecting");

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("client-connecting") && gwWifiStateString != QLatin1String("client-connecting"))
    {
        gwWifiStateString = QLatin1String("client-connecting");

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("ap-configured") && gwWifiStateString != QLatin1String("ap-configured"))
    {
        bool changed = false;
        gwWifiStateString = QLatin1String("ap-configured");

        if (gwWifiWorkingType != QLatin1String("accesspoint"))
        {
            gwWifiWorkingType = QLatin1String("accesspoint");
            changed = true;
        }

        if (gwWifiActive != QLatin1String("active"))
        {
            gwWifiActive = QLatin1String("active");
            changed = true;
        }

        updateEtag(gwConfigEtag);

        if (changed)
        {
            queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
        }
    }
    else if (status == QLatin1String("client-configured") && gwWifiStateString != QLatin1String("client-configured"))
    {
        bool changed = false;
        gwWifiStateString = QLatin1String("client-configured");

        if (gwWifiWorkingType != QLatin1String("client"))
        {
            gwWifiWorkingType = QLatin1String("client");
            changed = true;
        }

        if (gwWifiActive != QLatin1String("active"))
        {
            gwWifiActive = QLatin1String("active");
            changed = true;
        }

        updateEtag(gwConfigEtag);

        if (changed)
        {
            queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
        }
    }
    else if (status == QLatin1String("ap-connect-fail") && gwWifiStateString != QLatin1String("ap-connect-fail"))
    {
        gwWifiStateString = QLatin1String("ap-connect-fail");

        if (gwWifiActive != QLatin1String("inactive"))
        {
            gwWifiActive = QLatin1String("inactive");
        }

        bool changed = false;
        if (gwWifiName != "invalid")
        {
            gwWifiName = "invalid";
            changed = true;
        }
        if (gwWifiPw != "invalid")
        {
            gwWifiPw = "invalid";
            changed = true;
        }
        if (gwWifiType != "invalid")
        {
            gwWifiType = "invalid";
            changed = true;
        }
        gwWifiWorkingName = QString();
        gwWifiWorkingPw = QString();
        //gwWifiWorkingType = QString();

        if (changed)
        {
            queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
        }

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("client-connect-fail") && gwWifiStateString != QLatin1String("client-connect-fail"))
    {
        gwWifiStateString = QLatin1String("client-connect-fail");

        if (gwWifiActive != QLatin1String("inactive"))
        {
            gwWifiActive = QLatin1String("inactive");
        }

        bool changed = false;
        if (gwWifiName != "invalid")
        {
            gwWifiName = "invalid";
            changed = true;
        }
        if (gwWifiPw != "invalid")
        {
            gwWifiPw = "invalid";
            changed = true;
        }
        if (gwWifiType != "invalid")
        {
            gwWifiType = "invalid";
            changed = true;
        }
        gwWifiWorkingName = QString();
        gwWifiWorkingPw = QString();
        //gwWifiWorkingType = QString();

        if (changed)
        {
            queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
        }

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("check-ap") && gwWifiStateString != QLatin1String("check-ap"))
    {
        gwWifiStateString = QLatin1String("check-ap");

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("check-client") && gwWifiStateString != QLatin1String("check-client"))
    {
        gwWifiStateString = QLatin1String("check-client");

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("not-configured") && gwWifiStateString != QLatin1String("not-configured"))
    {
        gwWifiStateString = QLatin1String("not-configured");

        if (gwWifi != QLatin1String("not-configured"))
        {
            gwWifi = QLatin1String("not-configured");
        }

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("deactivated") && gwWifiStateString != QLatin1String("deactivated"))
    {
        gwWifiStateString = QLatin1String("deactivated");

        if (gwWifi != QLatin1String("deactivated"))
        {
            gwWifi = QLatin1String("deactivated");
        }

        if (gwWifiActive != QLatin1String("inactive"))
        {
            gwWifiActive = QLatin1String("inactive");
        }

        gwWifiWorkingName = QString();
        gwWifiWorkingPw = QString();
        gwWifiWorkingType = QString();

        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("check-config") && gwWifiStateString != QLatin1String("check-config"))
    {
        gwWifiStateString = QLatin1String("check-config");
        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("last-working-config") && gwWifiStateString != QLatin1String("last-working-config"))
    {
        gwWifiStateString = QLatin1String("last-working-config");
        updateEtag(gwConfigEtag);
    }
    else if (status == QLatin1String("ap-backup") && gwWifiStateString != QLatin1String("ap-backup"))
    {
        gwWifiStateString = QLatin1String("ap-backup");
        updateEtag(gwConfigEtag);
    }

    DBG_Printf(DBG_HTTP, "wifi: %s\n", qPrintable(req.content));
    return REQ_READY_SEND;
}

/*! PUT /api/config/homebridge/updated
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::putHomebridgeUpdated(const ApiRequest &req, ApiResponse &rsp)
{
    QHostAddress localHost(QHostAddress::LocalHost);
    rsp.httpStatus = HttpStatusForbidden;

    if (req.sock->peerAddress() != localHost)
    {
        rsp.list.append(errorToMap(ERR_UNAUTHORIZED_USER, "/" + req.path.join("/"), "unauthorized user"));
        return REQ_READY_SEND;
    }

    rsp.httpStatus = HttpStatusOk;

    if (req.content.isEmpty())
    {
        return REQ_READY_SEND;
    }

    // TODO forward events
    bool ok;
    QVariant var = Json::parse(req.content, ok);
    QVariantMap map = var.toMap();

    if (!ok || map.isEmpty())
    {
        return REQ_READY_SEND;
    }

    QString homebridge;
    QString homebridgePin;
    QString homebridgeVersion;
    QString homebridgeUpdateVersion;
    bool changed = false;

    if (map.contains("homebridge"))
    {
        homebridge = map["homebridge"].toString();

        if (homebridge == QLatin1String("not-managed"))
        {
            if (gwHomebridge != homebridge)
            {
                gwHomebridge = homebridge;
                changed = true;
            }
        }
        else if (homebridge == QLatin1String("managed"))
        {
            if (gwHomebridge != homebridge)
            {
                gwHomebridge = homebridge;
                changed = true;
            }
        }
        else if (homebridge == QLatin1String("installing"))
        {
            if (gwHomebridge != homebridge)
            {
                gwHomebridge = homebridge;
                changed = true;
            }
        }
        else if (homebridge == QLatin1String("install-error"))
        {
            if (gwHomebridge != homebridge)
            {
                gwHomebridge = homebridge;
                changed = true;
            }
        }
        else if (homebridge == QLatin1String("updated"))
        {
            if (gwHomebridge != homebridge)
            {
                gwHomebridge = homebridge;
                changed = true;
            }
        }

    }

    if (map.contains("homebridgepin"))
    {
        homebridgePin = map["homebridgepin"].toString();
        if (gwHomebridgePin != homebridgePin)
        {
            gwHomebridgePin = homebridgePin;
            changed = true;
        }
    }

    if (map.contains("homebridgeversion"))
    {
        homebridgeVersion = map["homebridgeversion"].toString();
        if (gwHomebridgeVersion != homebridgeVersion)
        {
            gwHomebridgeVersion = homebridgeVersion;
            changed = true;
        }
    }

    if (map.contains("homebridgeupdateversion"))
    {
        homebridgeUpdateVersion = map["homebridgeupdateversion"].toString();
        if (gwHomebridgeUpdateVersion != homebridgeUpdateVersion)
        {
            gwHomebridgeUpdateVersion = homebridgeUpdateVersion;
            changed = true;
        }
    }

    if (changed)
    {
        updateEtag(gwConfigEtag);
        queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
    }

    DBG_Printf(DBG_INFO, "homebridge: %s\n", qPrintable(req.content));
    return REQ_READY_SEND;
}

/*! POST /api/<apikey>/config/wifiscan
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::scanWifiNetworks(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)

    QVariantMap cells;
    rsp.map["cells"] = cells;
    rsp.httpStatus = HttpStatusOk;
    return REQ_READY_SEND;
}

/*! PUT /api/config/homebridge/reset
    \return REQ_READY_SEND
            REQ_NOT_HANDLED
 */
int DeRestPluginPrivate::resetHomebridge(const ApiRequest &req, ApiResponse &rsp)
{
    Q_UNUSED(req)

    rsp.httpStatus = HttpStatusOk;
#ifdef ARCH_ARM
    gwHomebridge = QLatin1String("reset");
    queSaveDb(DB_CONFIG | DB_SYNC, DB_SHORT_SAVE_DELAY);
#endif
    QVariantMap rspItem;
    QVariantMap rspItemState;
    rspItemState["/config/homebridge/reset"] = "success";
    rspItem["success"] = rspItemState;
    rsp.list.append(rspItem);
    return REQ_READY_SEND;
}

/*! Checks that the daylight sensor is configured properly.
    Also sets the uniqueid of the sensor if needed.
    \return true if the sensor is configured and \p lat and \p lng are written
 */
bool DeRestPluginPrivate::checkDaylightSensorConfiguration(Sensor *sensor, const QString &gwBridgeId, double *lat, double *lng)
{
    DBG_Assert(sensor != nullptr);
    DBG_Assert(lat != nullptr);
    DBG_Assert(lng != nullptr);
    if (!sensor || !lat || !lng)
    {
        return false;
    }

    {   // TODO the following code is excecuted on every iteration and rather expensive

        // check uniqueid
        // note: might change if device is changed
        ResourceItem *item = sensor->item(RAttrUniqueId);
        QString uniqueid = gwBridgeId.toLower() + QLatin1String("-01");
        // 00:21:2e:ff:ff:00:aa:bb-01
        for (int i = 0; i < (7 * 3); i += 3)
        {
            uniqueid.insert(i + 2, ':');
        }

        if (!item || (item->toString() != uniqueid))
        {
            item = sensor->addItem(DataTypeString, RAttrUniqueId);
            item->setValue(uniqueid);
        }
    }

    ResourceItem *configured = sensor->item(RConfigConfigured);
    DBG_Assert(configured != nullptr);
    if (!configured || !configured->toBool())
    {
        return false;
    }

    ResourceItem *ilat = sensor->item(RConfigLat);
    ResourceItem *ilng = sensor->item(RConfigLong);

    bool ok1 = false;
    bool ok2 = false;
    *lat = ilat ? ilat->toString().toDouble(&ok1) : nan("");
    *lng = ilng ? ilng->toString().toDouble(&ok2) : nan("");
    if (ok1 && ok2)
    {
        return true;
    }

    DBG_Printf(DBG_INFO, "The daylight sensor seems to be configured with invalid values\n");
    // TODO should configured be set to false?
    return false;
}

size_t DeRestPluginPrivate::calcDaylightOffsets(Sensor *daylightSensor, size_t iter)
{
    if (!daylightSensor)
    {
        return iter;
    }

    if (iter >= sensors.size())
    {
        iter = 0;
    }

    ResourceItem *sunrise = daylightSensor->item(RStateSunrise);
    ResourceItem *sunset = daylightSensor->item(RStateSunset);
    if (!sunrise || !sunset)
    {
        return iter;
    }

    QElapsedTimer t; // don't block too long
    t.start();
    while (iter < sensors.size() && t.elapsed() < 3)
    {
        Sensor &s = sensors[iter];
        iter++;

        if (s.type() != QLatin1String("CLIPDaylightOffset"))
        {
            continue;
        }

        ResourceItem *mode = s.item(RConfigMode);
        ResourceItem *offset = s.item(RConfigOffset);
        ResourceItem *localTime = s.item(RStateLocaltime);

        if (!mode || !offset || !localTime)
        {
            continue;
        }

        qint64 tref = -1;

        if (mode->toString() == QLatin1String("sunrise"))
        {
            tref = sunrise->toNumber() + offset->toNumber() * 60 * 1000;
        }
        else if (mode->toString() == QLatin1String("sunset"))
        {
            tref = sunset->toNumber() + offset->toNumber() * 60 * 1000;
        }
        else if (mode->toString() == QLatin1String("fix"))
        {
            auto dt = QDateTime::fromMSecsSinceEpoch(localTime->toNumber());
            const auto today = QDate::currentDate();
            if (dt.date() != today)
            {
                dt.setDate(today);
            }
            tref = dt.toMSecsSinceEpoch();
        }

        if (tref > 0 && tref != localTime->toNumber())
        {
            localTime->setValue(tref);
            s.updateStateTimestamp();
            enqueueEvent(Event(RSensors, RStateLastUpdated, s.id()));
            s.setNeedSaveDatabase(true);
            saveDatabaseItems |= DB_SENSORS;
            iter++;
            break;
        }
    }

    return iter;
}

/* Check daylight state */
void DeRestPluginPrivate::daylightTimerFired()
{
    double lat = nan("");
    double lng = nan("");
    Sensor *sensor = getSensorNodeForId(daylightSensorId);

    if (!checkDaylightSensorConfiguration(sensor, gwBridgeId, &lat, &lng))
    {
        return;
    }

    struct DL_MapEntry {
        const char *state;
        ResourceItem * stateItem;
        const char *offset;
        int weight;
    };

    std::vector<DL_MapEntry> dlmap = {
        { RStateSunrise, nullptr, RConfigSunriseOffset, DL_SUNRISE_START },
        { RStateSunset, nullptr, RConfigSunsetOffset, DL_SUNSET_END }
    };

    // dynamically add state items to daylight sensor if not already existing
    for (auto &e : dlmap)
    {
        e.stateItem = sensor->addItem(DataTypeTime, e.state);
        DBG_Assert(e.stateItem);
    }

    ResourceItem *daylight = sensor->item(RStateDaylight);
    ResourceItem *dark = sensor->item(RStateDark);
    ResourceItem *status = sensor->item(RStateStatus);
    ResourceItem *sunriseOffset = sensor->item(RConfigSunriseOffset);
    ResourceItem *sunsetOffset = sensor->item(RConfigSunsetOffset);
    DBG_Assert(daylight && status && sunriseOffset && sunsetOffset);
    if (!daylight || !dark || !status || !sunriseOffset || !sunsetOffset)
    {
        return;
    }

    daylightTimes.clear();

    const qint64 nowMs = QDateTime::currentDateTime().toMSecsSinceEpoch();
    getDaylightTimes(nowMs, lat, lng, daylightTimes);

    const char *curDayPhaseName = nullptr;
    int curDayPhase = 0;
    qint64 sunrise = 0;
    qint64 sunset = 0;
    qint64 dawn = 0;
    qint64 dusk = 0;

    for (const DL_Result &r : daylightTimes)
    {
        //qDebug() << r.name << QDateTime::fromMSecsSinceEpoch(r.msecsSinceEpoch).toString();

        if (r.msecsSinceEpoch <= nowMs)
        {
            curDayPhaseName = r.name;
            curDayPhase = r.weight;
        }

        if      (r.weight == DL_SUNRISE_START)  { sunrise = r.msecsSinceEpoch; }
        else if (r.weight == DL_SUNSET_END)     { sunset = r.msecsSinceEpoch; }
        else if (r.weight == DL_DAWN)           { dawn = r.msecsSinceEpoch; }
        else if (r.weight == DL_DUSK)           { dusk = r.msecsSinceEpoch; }

        const auto k = std::find_if(dlmap.begin(), dlmap.end(), [r](const DL_MapEntry &e) { return e.weight == r.weight; });
        if (k != dlmap.end() && k->stateItem)
        {
            if (k->stateItem->toNumber() != r.msecsSinceEpoch)
            {
                k->stateItem->setValue(r.msecsSinceEpoch);
            }
        }
    }

    bool isDaylight = false;
    if (sunrise > 0 && sunset > 0)
    {
        sunrise += (sunriseOffset->toNumber() * 60 * 1000);
        sunset += (sunsetOffset->toNumber() * 60 * 1000);

        if (nowMs > sunrise && nowMs < sunset)
        {
            isDaylight = true;
        }
    }

    bool isDark = true;
    if (dawn > 0 && dusk > 0)
    {
        dawn += (sunriseOffset->toNumber() * 60 * 1000);
        dusk += (sunsetOffset->toNumber() * 60 * 1000);

        if (nowMs > dawn && nowMs < dusk)
        {
            isDark = false;
        }
    }

    bool updated = false;

    if (!daylight->lastSet().isValid() || daylight->toBool() != isDaylight)
    {
        daylight->setValue(isDaylight);
        Event e(RSensors, RStateDaylight, sensor->id(), daylight);
        enqueueEvent(e);
        updated = true;
    }

    if (!dark->lastSet().isValid() || dark->toBool() != isDark)
    {
        dark->setValue(isDark);
        Event e(RSensors, RStateDark, sensor->id(), dark);
        enqueueEvent(e);
        updated = true;
    }

    if (curDayPhase && curDayPhase != status->toNumber())
    {
        status->setValue(curDayPhase);
        Event e(RSensors, RStateStatus, sensor->id(), status);
        enqueueEvent(e);
        updated = true;
    }

    if (updated)
    {
        sensor->updateStateTimestamp();
        enqueueEvent(Event(RSensors, RStateLastUpdated, sensor->id()));
        sensor->setNeedSaveDatabase(true);
        saveDatabaseItems |= DB_SENSORS;
    }

    daylightOffsetIter = calcDaylightOffsets(sensor, daylightOffsetIter);

    if (curDayPhaseName)
    {
        DBG_Printf(DBG_INFO_L2, "Daylight now: %s, status: %d, daylight: %d, dark: %d\n", curDayPhaseName, curDayPhase, isDaylight, isDark);
    }
}

/*! Manager to asure gateway has proper time.
 */
void DeRestPluginPrivate::timeManagerTimerFired()
{
    if (timeManagerState == TM_Init)
    {
        DBG_Assert(ntpqProcess == nullptr);
        timeManagerState = TM_WaitNtpq;
        ntpqProcess = new QProcess(this);
        connect(ntpqProcess, SIGNAL(finished(int)), this, SLOT(ntpqFinished()));
        QStringList args;
        args << "-c" << "rv";
        ntpqProcess->start(QLatin1String("ntpq"), args);
    }
}

/*! Timer that indicates that phoscon app wifi page is inactive.
 */
void DeRestPluginPrivate::wifiPageActiveTimerFired()
{
    if (gwWifiPageActive)
    {
        gwWifiPageActive = false;
        queSaveDb(DB_CONFIG, DB_SHORT_SAVE_DELAY);
    }
}

/*! Manager to asure gateway has proper time.
 */
void DeRestPluginPrivate::ntpqFinished()
{
    DBG_Assert(ntpqProcess);
    DBG_Assert(timeManagerState == TM_WaitNtpq);
    if (timeManagerState == TM_WaitNtpq && ntpqProcess)
    {
        QByteArray data = ntpqProcess->readAll();
        //DBG_Printf(DBG_INFO, "NTP exit %d, %s\n", ntpqProcess->exitCode(), qPrintable(data));

        QString ntpState;

        if (ntpqProcess->exitCode() != 0 ||
            data.contains("sync_unspec")) // ntp not yet synchronized
        {
            ntpState = QLatin1String("unsynced");
            timeManagerState = TM_Init;
            QTimer::singleShot(60000, this, SLOT(timeManagerTimerFired()));
        }
        else // synced somehow sync_*
        {
            timeManagerState = TM_NtpRunning;
            ntpState = QLatin1String("synced");
            QTimer::singleShot(30 * 60 * 1000, this, SLOT(timeManagerTimerFired()));
        }

        if (gwConfig["ntp"] != ntpState)
        {
            gwConfig["ntp"] = ntpState;
            updateEtag(gwConfigEtag);
        }

        ntpqProcess->deleteLater();
        ntpqProcess = nullptr;
    }
}