subDomainsBrute.py 文件源码

def _load_dns_servers(self):
        print '[+] Initializing, validate DNS servers ...'
        self.dns_servers = []
        with open('dict/dns_servers.txt') as f:
            for line in f:
                server = line.strip()
                if not server:
                    continue
                while True:
                    if threading.activeCount() < 50:
                        t = threading.Thread(target=self._test_server, args=(server,))
                        t.start()
                        break
                    else:
                        time.sleep(0.1)

        while threading.activeCount() > 2:
            time.sleep(0.1)
        self.dns_count = len(self.dns_servers)
        sys.stdout.write('\n')
        print '[+] Found %s available DNS servers in total' % self.dns_count