From: Ralf Jung Date: Sun, 6 Dec 2015 16:18:57 +0000 (+0100) Subject: add script to check for expired certificates X-Git-Url: https://git.ralfj.de/lets-encrypt-tiny.git/commitdiff_plain/6bec79902ed949d566ae6c0e884570365a91f3b7?ds=sidebyside add script to check for expired certificates --- diff --git a/certcheck b/certcheck new file mode 100755 index 0000000..dc9e9ef --- /dev/null +++ b/certcheck @@ -0,0 +1,42 @@ +#!/usr/bin/python3 +## Usage: +## ./certcheck -d DAYS ... +## Recursively crawl all given folders for files ending in '.crt', and check all of them and all given files for their +## expiry date. If that is less than DAYS in the future, print that information. + +import argparse, subprocess, re, os, datetime + +def check_dir(dirname, days): + for name in os.listdir(dirname): + name = os.path.join(dirname, name) + if os.path.isdir(name): + check_dir(name, days) + elif name.endswith('.crt'): + check_file(name, days) + +def check_file(filename, days): + valid_not_after = subprocess.check_output(["openssl", "x509", "-enddate", "-in", filename, "-out", "/dev/null"]).decode('utf-8') + match = re.match("notAfter=([a-zA-Z0-9: ]+)", valid_not_after) + assert match is not None, "Unexpected output from openssl: valid_not_after" + enddate = match.group(1) + enddate = datetime.datetime.strptime(enddate, '%b %d %X %Y %Z') + delta = enddate - datetime.datetime.now() + if delta < datetime.timedelta(days=days): + print("{} expires at {}, which is in {} days".format(filename, enddate, delta.days)) + +if __name__ == "__main__": + parser = argparse.ArgumentParser(description='Check for soon-to-expire (and already expired) certificates') + parser.add_argument("-d", "--days", metavar='N', + dest="days", type=int, default=14, + help="Warn about certificates valid for less than N (default 7)") + parser.add_argument("certs", metavar='CERTS', nargs='+', + help="These certificate files are checked. Directories are searched recursively for files called '*.crt'.") + args = parser.parse_args() + + for name in args.certs: + if os.path.isdir(name): + check_dir(name, args.days) + else: + check_file(name, args.days) + +