38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
#!/usr/bin/env python3
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from csv import DictReader
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from datetime import datetime, timezone
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from os import scandir
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from os.path import join
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def parse():
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NOW = datetime.now()
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active_leases = {}
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for file in scandir("/var/lib/kea/"):
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with open(file.path) as f:
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for row in DictReader(f):
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expires = datetime.fromtimestamp(int(row["expire"]))
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if expires >= NOW:
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if (
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row["address"] not in active_leases
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or active_leases[row["address"]]["expires_dt"] < expires
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):
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row["expires_dt"] = expires
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active_leases[row["address"]] = row
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return active_leases.values()
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def print_table(leases):
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print(""" address | MAC | expires | hostname
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-----------------+-------------------+---------+----------""")
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for lease in sorted(leases, key=lambda r: r["address"]):
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print(
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f' {lease["address"]:<15} | {lease["hwaddr"].lower()} | {lease["expires_dt"]:%H:%M} | {lease["hostname"]}'
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)
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if __name__ == "__main__":
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print_table(parse())
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