[monitoring-plugins] Use GMT timezone in SSL certs
Sven Nierlein
git at monitoring-plugins.org
Mon Nov 7 23:00:13 CET 2016
Module: monitoring-plugins
Branch: master
Commit: a3a78795b2951777d2586abc2ea9ef40ca4f4399
Author: Peter (pir) Radcliffe <pir-gitweb.com at pir.net>
Committer: Sven Nierlein <sven at nierlein.de>
Date: Tue Nov 24 03:03:41 2015 +0000
URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=a3a7879
Use GMT timezone in SSL certs
SSL certs are required to use times in GMT per
https://www.ietf.org/rfc/rfc5280.txt but the mktime() here assumes the
current timezone.
Fix the time_t conversion to be done assuming GMT with timegm() and
only do it once rather than twice.
Display the expiry date and time with ISO format years and give an
offset from GMT and a timezone to be very clear about exactly what time
is being displayed. Time given is correct and now in the machine’s
timezone.
---
plugins/sslutils.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/plugins/sslutils.c b/plugins/sslutils.c
index 4f9c793..6437289 100644
--- a/plugins/sslutils.c
+++ b/plugins/sslutils.c
@@ -264,10 +264,10 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
(tm->data[10 + offset] - '0') * 10 + (tm->data[11 + offset] - '0');
stamp.tm_isdst = -1;
- time_left = difftime(timegm(&stamp), time(NULL));
+ tm_t = timegm(&stamp);
+ time_left = difftime(tm_t, time(NULL));
days_left = time_left / 86400;
- tm_t = mktime (&stamp);
- strftime(timestamp, 50, "%c", localtime(&tm_t));
+ strftime(timestamp, 50, "%F %R %z/%Z", localtime(&tm_t));
if (days_left > 0 && days_left <= days_till_exp_warn) {
printf (_("%s - Certificate '%s' expires in %d day(s) (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, days_left, timestamp);
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