mirror of https://github.com/NeoCloud/NeoNetwork
45 lines
1.2 KiB
Python
Executable File
45 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import ipaddress
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ZONE = ".127.10.in-addr.arpa"
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def truncate(rev: str) -> str:
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assert rev.endswith(ZONE)
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rev = rev[: -len(ZONE)]
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return rev
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def gen_reverse_pointers(network: str, ns: list, ds: list = [], ttl: int = -1) -> list:
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ttl = f"{ttl} " if 900 <= ttl <= 86400 else ""
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buf = list()
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net = ipaddress.IPv4Network(network, strict=True)
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assert net.prefixlen > 24
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netrev = truncate(net.reverse_pointer)
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for _ns in ns:
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buf.append(f"{netrev} {ttl}IN NS {_ns}")
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for _ds in ds:
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buf.append(f"{netrev} {ttl}IN DS {_ds}")
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for addr in net:
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cnamefr = truncate(addr.reverse_pointer)
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cnameto = f"{int.from_bytes(addr.packed, byteorder='big', signed=False) & 0xff}.{netrev}"
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buf.append(f"{cnamefr} {ttl}IN CNAME {cnameto}")
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return buf
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if __name__ == "__main__":
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print(
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"\n".join(
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gen_reverse_pointers(
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"10.127.8.64/26",
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["ns1.jerry.neo."],
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[
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"18792 13 2 2F335456EEE70FC4833886E5EEDC28E7195E90E2A337860B3E805D5EB9F3A804"
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],
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ttl=1500,
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)
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)
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)
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