bundlewrap/bundles/kea-dhcp-server/files/kea-lease-list

37 lines
1.2 KiB
Python

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