31 lines
1.1 KiB
Python
31 lines
1.1 KiB
Python
import socket
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import sys
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def make_query(name):
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import random
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txid = random.randint(1, 65535)
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header = txid.to_bytes(2, 'big') + (0x0100).to_bytes(2, 'big') + (1).to_bytes(2, 'big') + b'\x00\x00\x00\x00\x00\x00'
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qname = b''.join([bytes([len(p)]) + p.encode('ascii') for p in name.split('.')]) + b'\x00'
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return header + qname + (1).to_bytes(2, 'big') + (1).to_bytes(2, 'big')
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def query_ip(server, domain):
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packet = make_query(domain)
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.settimeout(2.0)
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try:
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s.sendto(packet, (server, 53))
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data, _ = s.recvfrom(1024)
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# Parse answer IP (last 4 bytes of first A record)
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if len(data) >= 16:
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ip = f"{data[-4]}.{data[-3]}.{data[-2]}.{data[-1]}"
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return ip
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except Exception as e:
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return str(e)
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finally:
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s.close()
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for server in ["140.44.4.36", "140.44.4.65"]:
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for dom in ["pihole1.snarfnet.net", "pihole2.snarfnet.net", "dns1.snarfnet.net", "dns2.snarfnet.net", "ns1.snarfnet.net", "ns2.snarfnet.net"]:
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ip = query_ip(server, dom)
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print(f"[{server}] {dom:<25} -> {ip}")
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