def dns_a(domain: str):
    dns_servers = '114.114.114.114,114.114.115.115,223.5.5.5,223.6.6.6,180.76.76.76,119.29.29.29,119.29.29.29,1.2.4.8,210.2.4.8,117.50.11.11,52.80.66.66,101.226.4.6,218.30.118.6,123.125.81.6,140.207.198.6,8.8.8.8,8.8.4.4,9.9.9.9,208.67.222.222,208.67.220.220'.split(
        ',')
    loop = asyncio.new_event_loop()
    resolver = aiodns.DNSResolver(loop=loop)
    resolver.nameservers = dns_servers
    try:
        record_a = loop.run_until_complete(resolver.query(domain, 'A'))
        return record_a
    except:
        pass
    return []

record_a = dns_a(domain)
ips = []
if type(record_a) == list:
ips = sorted([answer.host for answer in record_a])

def check_ip_reachable(ip: str):
    nm = nmap.PortScanner()
    xx = nm.scan(hosts=ip, arguments='-sP') # -sPn也可以
    if 'scan' in xx:
        i = xx.__getitem__('scan')
        if ip in i:
            j = i.__getitem__(ip)
            if 'status' in j:
                status = j['status']
                if 'state' in status:
                    state = status['state']
                    print(ip, state)
                    return state
    print(ip, 'down')
    return 'down'

# 實(shí)現(xiàn)對(duì)端口進(jìn)行掃描，并且返回結(jié)果。使用nmap實(shí)現(xiàn)
def port_scan(ip: str):
    second = check_ip_reachable(ip)
    if second is not None and second == 'up':
        nm = nmap.PortScanner()
        xx = nm.scan(ip)
        print(nm.command_line())
        ans = []
        if 'scan' in xx:
            i = xx.__getitem__('scan')
            if ip in i:
                j = i.__getitem__(ip)
                if 'tcp' in j:
                    tcp = j['tcp']
                    for port in tcp:
                        ans.append(port)
        ans = sorted(ans)
        return ans
    else:
        write_to_file('output/' + time_now + '/ips.txt', ip + ' 不可達(dá)\n')
    return []

def handle_ip(ip: str):
    if not task_ip_set.__contains__(ip):
        try:
            print('ip:' + ip, '開(kāi)始端口掃描')
            port_result = port_scan(ip)
            val = ''
            print('ip:', ip, '發(fā)現(xiàn)端口', port_result)
            for i in port_result:
                val = val + '\n' + ip + "----" + i.__str__()
            write_to_file('output/' + time_now + '/ip_ports.txt', val)
            task_ip_set.add(ip)
        except Exception as e:
            print(e)
            
def handle_domain(domain: str):
    if not task_domain_set.__contains__(domain):
        print('domain:' + domain)
        record_a = dns_a(domain)
        ips = []
        if type(record_a) == list:
            ips = sorted([answer.host for answer in record_a])
        val = ''
        for i in ips:
            val = val + '\n' + domain + "----" + i.__str__()
        write_to_file('output/' + time_now + '/domain_ips.txt', val)
        print(ips)
        for i in ips:
            handle_ip(i)

def get_subdomains(value: str, domain: str):
    x = f'(?P<subdomain>[a-zA-Z0-9.]+{domain})'
    pattern = re.compile(x)
    y = pattern.findall(value)
    ans = set()
    for i in y:
        ans.add(i)
    print(ans)
    return ans

answers = await self.resolvers[j].query(cur_domain, 'A') # 查找A記錄
# 如果A記錄有值且沒(méi)有報(bào)錯(cuò)，則說(shuō)明該子域名存在