141 lines
3.5 KiB
Python
Executable file
141 lines
3.5 KiB
Python
Executable file
#!/usr/bin/env python
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# Copyright 2024 Alarig Le Lay <alarig@swordarmor.fr>
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# Distributed under the terms of the GNU General Public License v3
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import argparse
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import datetime
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import logging
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import requests
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import nagiosplugin
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import pandas
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import pyunycode
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import requests_cache
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_log = logging.getLogger('nagiosplugin')
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list2dict = []
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session = requests_cache.CachedSession(
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'/tmp/iana_rdap_cache',
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cache_control=True
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)
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req = session.get('https://data.iana.org/rdap/dns.json')
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for list_of_list in req.json()['services']:
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k,v = list_of_list
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for x in k:
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list2dict.append({'name':x, 'url':v[0]})
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df = pandas.DataFrame(list2dict)
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def expiration(domain):
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domain = pyunycode.convert(domain)
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tld = domain.split('.')[-1]
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try:
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url = df[df.name == (tld)].iloc[0].url
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# no rdap on tld
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except IndexError:
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raise nagiosplugin.CheckError(
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f'The TLD {tld} does not have an RDAP server'
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)
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req_rdap = requests.get(f'{url}domain/{domain}')
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raw_expiration = [
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event.get('eventDate', False)
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for event in req_rdap.json().get('events', {})
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if event.get('eventAction', {}) == 'expiration'
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]
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try:
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fecha = raw_expiration[0].split('T')[0]
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except IndexError:
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raise nagiosplugin.CheckError(
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f'The domain {domain} has not been found'
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)
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today = datetime.datetime.now()
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delta = datetime.datetime.strptime(fecha, '%Y-%m-%d') - today
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return(delta.days)
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# data acquisition
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class Expiration(nagiosplugin.Resource):
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"""Domain model: domain expiration
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Get the expiration date from RDAP.
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The RDAP server is extracted from https://data.iana.org/rdap/dns.json which
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cached to avoid useless fetching; but the JSON from the registry RDAP isn’t
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cached because we can’t presume of the data lifetime.
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"""
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def __init__(self, domain):
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self.domain = domain
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def probe(self):
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try:
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days_to_expiration = expiration(self.domain)
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except requests.exceptions.ConnectionError as err:
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raise nagiosplugin.CheckError(
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f'The connection to the RDAP server failed: {err}'
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)
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return [nagiosplugin.Metric(
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'daystoexpiration',
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days_to_expiration,
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uom='d'
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)]
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# data presentation
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class ExpirationSummary(nagiosplugin.Summary):
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"""Status line conveying expiration information.
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"""
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def __init__(self, domain):
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self.domain = domain
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pass
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# runtime environment and data evaluation
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@nagiosplugin.guarded
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def main():
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argp = argparse.ArgumentParser(description=__doc__)
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argp.add_argument(
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'-w', '--warning', metavar='int', default='30',
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help='warning expiration max days. Default=30'
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)
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argp.add_argument(
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'-c', '--critical', metavar='range', default='15',
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help='critical expiration max days. Default=15'
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)
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argp.add_argument(
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'-v', '--verbose', action='count', default=0, help='be more verbose'
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)
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argp.add_argument('domain')
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args = argp.parse_args()
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wrange = f'@{args.critical}:{args.warning}'
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crange = f'@~:{args.critical}'
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fmetric = '{value} days until domain expires'
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check = nagiosplugin.Check(
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Expiration(args.domain),
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nagiosplugin.ScalarContext(
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'daystoexpiration',
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warning=wrange,
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critical=crange,
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fmt_metric=fmetric
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),
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ExpirationSummary(args.domain)
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)
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check.main(verbose=args.verbose)
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if __name__ == '__main__':
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main()
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