function get_nation_limit()
{
    get_dev_info || return 1
    COUNTRY=`echo $DEV_INFO | jsonpath -e "@.get_country"`
    [ -z "${MODEL}" ] && MODEL=`echo $DEV_INFO | jsonpath -e "@.get_model"`
    SN=`echo $DEV_INFO | jsonpath -e "@.get_sn"`
    TIMESTAMP="`date +%s`"

    REQ_MSG="{\"countryCode\":\"${COUNTRY}\",\"model\":\"${MODEL}\",\"nonce\":\"${RANDOM}\",\"sn\":\"${SN}\",\"timestamp\":${TIMESTAMP}000}"
    REQ_MSG_AES=`echo -n ${REQ_MSG} | openssl enc -e -aes-256-cbc -K ${KEY} -iv ${IV_VALUE} -base64`
    log "$REQ_MSG_AES"

    REQ_MSG_SEC=`echo -n ${REQ_MSG_AES} | sed -e 's/ //g' -e 's/+/%2B/g' -e 's/\//%2F/g' -e 's/=/%3D/g'`
    log "$REQ_MSG_SEC"

    export SSL_CERT_DIR=/etc/ssl/certs
    CURL_RESULT=`curl --connect-timeout 60 -X GET -H  "Accept:*/*" -H  "Content-Type:application/x-www-form-urlencoded" "https://device.dreame.tech/dreame-region/public/check?data=${REQ_MSG_SEC}"`
    log "${CURL_RESULT}"

    RESULT=`echo $CURL_RESULT | jsonpath -e "@.data.result"`
    log "${RESULT}"
    echo "${CURL_RESULT}" | jshon -n ${TIMESTAMP} -i timestamp > /data/log/curl_area.json

    # invalid: 表示参数有误或者时间戳超时；
    # unknown: 无法判断该IP属于哪个国家；
    # mismatched: 机器内置国家码和IP不匹配;
    # matched: 机器和IP相匹配
    if [ "$RESULT" == "matched" ]; then
        avacmd msg_cvt '{"type":"msgCvt","cmd":"device_lock","code":200}' &
    elif [ "$RESULT" == "mismatched" ]; then
        avacmd msg_cvt '{"type":"msgCvt","cmd":"device_lock","code":401}' &
    else
        avacmd msg_cvt '{"type":"msgCvt","cmd":"device_lock","code":0}' &
    fi

    ext_dinfo=`echo $CURL_RESULT | jsonpath -e "@.data.ext.d"`
    if [ -n "${ext_dinfo}" ]; then
        laser_flare=0
        elems=`echo "${ext_dinfo}" | sed 's/,/ /g'`
        for i in $elems
        do
            if [ "$i" == "laser_flare" ]; then
                laser_flare=1
            fi
        done
        if [ "${PRODUCT_NAME}" == "r2215" -o "${PRODUCT_NAME}" == "r2235" ]; then
            avacmd msg_cvt "{\"type\":\"msgCvt\",\"ext_info\":{\"laser_flare\":${laser_flare}}}" &
        fi
    fi
}

function check_ip_limit()
{
    get_dev_info || return 1
    [ -z "${MODEL}" ] && MODEL=`echo $DEV_INFO | jsonpath -e "@.get_model"`
    COUNTRY=`echo $DEV_INFO | jsonpath -e "@.get_country"`
    SN=`echo $DEV_INFO | jsonpath -e "@.get_sn"`
    DID=`echo $DEV_INFO | jsonpath -e "@.get_did"`
    TIMEZONE=`echo $DEV_INFO | jsonpath -e "@.get_timezone"`
    TIMESTAMP="`date +%s`"
    [ -z "${DID}" ] && DID=12345678

    REQ_MSG="{\"model\":\"${MODEL}\",\"sn\":\"${SN}\",\"did\":${DID},\"timezone\":\"${TIMEZONE}\",\"timestamp\":${TIMESTAMP}000}"
    REQ_MSG_AES=`echo -n ${REQ_MSG} | openssl enc -e -aes-256-cbc -K ${KEY} -iv ${IV_VALUE} -base64`
    log "IP LOCK: $REQ_MSG_AES"

    REQ_MSG_SEC=`echo -n ${REQ_MSG_AES} | sed -e 's/ //g' -e 's/+/%2B/g' -e 's/\//%2F/g' -e 's/=/%3D/g'`

    mkdir -p /data/log /tmp/log
    get_dreame_iot_area "${COUNTRY}"

    export SSL_CERT_DIR=/etc/ssl/certs
    URL="https://${iot_area}.iot.dreame.tech:15541/dreame-region/public/didCheck?data=${REQ_MSG_SEC}"
    CURL_RESULT=`curl --connect-timeout 30 -X GET --location "${URL}" 2>/tmp/log/curl_area.log`
    curl_ret=$?
    if [ ${curl_ret} -eq 0 ]; then
        log "curl ${URL} ok: ${CURL_RESULT}"
        echo "${CURL_RESULT}" | jshon -n ${TIMESTAMP} -i timestamp > /data/log/curl_area.json
        CODE=`echo "${CURL_RESULT}" | jsonpath -e "@.code"`
        avacmd msg_cvt "{\"type\":\"msgCvt\",\"cmd\":\"device_lock\",\"code\":${CODE}}" &
        rm -f /data/log/devlock_record.json
        record_events.sh lock_code ${CODE}
    else
        ERR_INFO=`tail -1 /tmp/log/curl_area.log`
        log "curl ${URL} failed: ${ERR_INFO}"

        RECORD_CODE=`jshon -F /data/config/ava/iot_conf.json -e LockCode`
        if [ -z "${RECORD_CODE}" -o "${RECORD_CODE}" == "200" ]; then
            RECORD_CNT=`jshon -F /data/log/devlock_record.json -e record_cnt 2>/dev/null`
            RECORD_TIME=`jshon -F /data/log/devlock_record.json -e record_time 2>/dev/null`
            if [ -n "${RECORD_CNT}" -a -n "${RECORD_TIME}" ]; then
                NOW_TIME=`date +%s`
                let EXPECT_TIME=${RECORD_TIME}+86400
                if [ ${NOW_TIME} -ge ${EXPECT_TIME} ]; then
                    let RECORD_CNT++
                    if [ ${RECORD_CNT} -ge 3 ]; then
                        log "curl area failed reach:${RECORD_CNT}, lock device"
                        avacmd msg_cvt "{\"type\":\"msgCvt\",\"cmd\":\"device_lock\",\"code\":201}" &
                        rm -f /data/log/devlock_record.json
                        record_events.sh lock_code 201
                    else
                        RECORD_TIME=`date +%s`
                        log "record cnt: ${RECORD_CNT}, record time:${RECORD_TIME}"
                        echo "{\"record_cnt\":${RECORD_CNT},\"record_time\":${RECORD_TIME}}" > /data/log/devlock_record.json
                    fi
                else
                    log "expect time: ${EXPECT_TIME}, now time: ${NOW_TIME}"
                fi
            else
                RECORD_TIME=`date +%s`
                echo "{\"record_cnt\":1,\"record_time\":${RECORD_TIME}}" > /data/log/devlock_record.json
            fi
        fi
    fi
}

function get_location_city()
{
    get_dev_info || return 1
    TIMESTAMP="`date +%s`000"
    DID=`echo $DEV_INFO | jsonpath -e "@.get_did"`
    COUNTRY=`echo $DEV_INFO | jsonpath -e "@.get_country"`
    [ -z "${DID}" ] && DID=12345678

    //2023-03-08 经和耿工、邹工讨论，决定所有区域都请求城市中文名，像台湾地区如需繁体中文，由服务端做映射。
    #若APP上语言显示非中文，由APP映射为对应的城市拼音或者外文名。
    REQ_MSG="{\"did\":${DID},\"lang\":\"ZH\",\"timestamp\":${TIMESTAMP}}"

    REQ_MSG_AES=`echo -n ${REQ_MSG} | openssl enc -e -aes-256-cbc -K ${KEY} -iv ${IV_VALUE} -base64`
    log "Get City: $REQ_MSG_AES"

    REQ_MSG_SEC=`echo -n ${REQ_MSG_AES} | sed -e 's/ //g' -e 's/+/%2B/g' -e 's/\//%2F/g' -e 's/=/%3D/g'`

    mkdir -p /tmp/log
    get_dreame_iot_area "${COUNTRY}"

    export SSL_CERT_DIR=/etc/ssl/certs
    URL="https://${iot_area}.iot.dreame.tech:15541/dreame-region/public/didCity?data=${REQ_MSG_SEC}"
    CURL_RESULT=`curl --connect-timeout 30 -X GET --location "${URL}" 2>/tmp/log/curl_area.log`
    curl_ret=$?
    if [ ${curl_ret} -eq 0 ]; then
        log "curl ${URL} ok: ${CURL_RESULT}"
        echo "${CURL_RESULT}" > /data/log/location_city.json
    else
        ERR_INFO=`tail -1 /tmp/log/curl_area.log`
        log "curl ${URL} failed: ${ERR_INFO}"
    fi

    city=`echo ${CURL_RESULT} | jsonpath -e "@.city"`
    avacmd msg_cvt "{\"method\":\"set_properties\",\"params\":[{\"did\":\"${DID}\",\"siid\":7,\"piid\":7,\"value\":\"${city}\"}],\"id\":1234}"
}