36 lines
1.4 KiB
Python
36 lines
1.4 KiB
Python
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#!/usr/bin/env nix-shell
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#!nix-shell -i python3 -p python3 -p python3.pkgs.requests
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import ipaddress
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import requests
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import socket
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IP_RANGES_URL = 'https://ip-ranges.amazonaws.com/ip-ranges.json'
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NLNOG_PARTICIPANTS_URL = 'https://ring.nlnog.net/scripts/participants.cgi'
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def main():
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ip_ranges = requests.get(IP_RANGES_URL).json()
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for prefix in ip_ranges['prefixes']:
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prefix['network'] = ipaddress.ip_network(prefix['ip_prefix'])
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nlnog_participants = requests.get(NLNOG_PARTICIPANTS_URL).json()
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nlnog_amazon = nlnog_participants["participants"]["75"]
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for machine in sorted(nlnog_amazon['machines']):
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addrinfos = socket.getaddrinfo(f'{machine}.ring.nlnog.net', 22, proto=socket.IPPROTO_TCP, family=socket.AF_INET)
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for addrinfo in addrinfos:
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_, _, _, _, (addr, _) = addrinfo
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ip_addr = ipaddress.ip_address(addr)
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matched_prefix = None
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for prefix in ip_ranges['prefixes']:
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if ip_addr in prefix['network']:
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if not matched_prefix or matched_prefix['service'] == 'AMAZON':
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matched_prefix = prefix
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else:
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print(machine, ip_addr, 'overlap', prefix, matched_prefix)
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print(f"\t'{ip_addr}', // AWS region {matched_prefix['region']} - {machine}.ring.nlnog.net")
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if __name__ == '__main__':
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main()
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