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#!/usr/bin/env python3
import datetime
import ipaddress
import os
from jinja2 import Environment, FileSystemLoader
outfile = os.getenv("DNSMASQ_LEASES_OUT", "/var/lib/dnsmasq/leases.html")
leases_file = os.getenv("DNSMASQ_LEASES", "/var/lib/dnsmasq/dnsmasq.leases")
leases = []
with open(leases_file, "r") as f:
for line in f:
content = line.rstrip("\n").split(" ")
lease = dict()
if int(content[0]) == 0:
lease["expire"] = "never"
else:
lease["expire"] = datetime.datetime.fromtimestamp(int(content[0]))
lease["MAC"] = content[1]
lease["IP"] = ipaddress.ip_address(content[2])
lease["hostname"] = content[3]
leases.append(lease)
leases = sorted(leases, key=lambda d: d["IP"])
dir_path = os.path.dirname(os.path.realpath(__file__))
templates_dir = os.path.join(dir_path, "templates")
environment = Environment(loader=FileSystemLoader(templates_dir))
template = environment.get_template("index.html")
content = template.render(leases=leases)
with open(outfile, "w") as fh:
print(content, file=fh)
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