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+#!/usr/bin/env python3
+# File: alert.py
+# Location: https://gitlab.com/bgstack15/freeipa-cert-alert
+# Author: bgstack15
+# Startdate: 2021-10-27 14:00
+# SPDX-License-Identifier: GPL-3.0
+# Title: Script that Alerts For Expiring Certs
+# Purpose: Send me alerts for certs that are about to expire
+# History:
+# Usage:
+#    Set env: FREEIPA_SERVER FREEIPA_USERNAME FREEIPA_PASSWORD DAYS
+# References:
+#    https://python-freeipa.readthedocs.io/en/latest/
+#    https://stackoverflow.com/questions/72899/how-do-i-sort-a-list-of-dictionaries-by-a-value-of-the-dictionary/73050#73050
+#    https://stackoverflow.com/questions/6871016/adding-days-to-a-date-in-python/6871482#6871482
+#    https://stackoverflow.com/questions/24027863/convert-a-utc-time-to-epoch
+#    https://stackoverflow.com/questions/9989334/create-nice-column-output-in-python/9996049#9996049
+# Improve:
+# Dependencies:
+#    Somehow this is not a requisite component of freeipa! Those are named python3-ipa*
+#    fedora-req: python3-freeipa
+
+import python_freeipa, json, datetime, os, sys
+import dateutil.parser as dparser
+
+# Functions
+def show_list(inlist):
+   col1max = 0
+   col2max = 0
+   col3max = 0
+   for i in inlist:
+      col1max = max(len(i['valid_not_before']),col1max)
+      col2max = max(len(i['valid_not_after']),col2max)
+      col3max = max(len(i['subject']),col3max)
+   col1max = col1max+2
+   col2max = col2max+2
+   if len(inlist) > 0:
+      a = "Not valid before"
+      b = "Not valid after"
+      c = "Subject"
+      print(f"{a:<{col1max}} {b:<{col2max}} {c:<{col3max}}")
+   for i in inlist:
+      print(f"{i['valid_not_before']:<{col1max}} {i['valid_not_after']:<{col2max}} {i['subject']:<{col3max}}")
+
+# Main
+DAYS = os.getenv("DAYS",default=60)
+try:
+    DAYS = int(DAYS)
+except:
+    DAYS = 60
+
+client = python_freeipa.ClientMeta(os.getenv("FREEIPA_SERVER"))
+client.login(os.getenv("FREEIPA_USERNAME"),os.getenv("FREEIPA_PASSWORD"))
+
+today = str(datetime.date.today( ))
+future = str(datetime.date.today() + datetime.timedelta(days=DAYS))
+results = client.cert_find(o_validnotafter_from=today,o_validnotafter_to=future)
+certs = results['result']
+# Sort
+certs = sorted(certs,key=lambda d: int(dparser.parse(d['valid_not_after']).strftime('%s')))
+if len(certs) > 0:
+    print(f"Certificates expiring within {DAYS} days from {today}")
+show_list(certs)