【安全加密】设备指纹登录校验：异常环境的识别与交易延迟

function onLoginCheck(actor, fp)
    local player = class(actor)
    local known = getplayvar(actor, 2, "FP_" .. fp)
    if known == 1 then return end
    local cnt = tonumber(getplayvar(actor, 2, "FP_CNT") or "0")
    if cnt < 3 then
        setplayvar(actor, "HUMAN", "FP_" .. fp, 1, 1)
        setplayvar(actor, "HUMAN", "FP_CNT", cnt + 1, 1)
        sendmail(actor, 0, "新设备登录提醒", "如非本人操作请立即改密", "")
    else
        setplayvar(actor, "HUMAN", "TRADE_DELAY", os.time() + 7200, 1)
        sendmsg(actor, 0, "新设备已登录，交易功能将在2小时后开启")
    end
end

function canTradeNow(actor)
    local player = class(actor)
    local untilTs = tonumber(getplayvar(actor, 2, "TRADE_DELAY") or "0")
    if untilTs > os.time() then
        sendmsg(actor, 0, "新设备保护中，剩余" .. math.ceil((untilTs - os.time()) / 60) .. "分钟")
        return false
    end
    return true
end