crypto-utils/certwatch.cron

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#!/bin/bash
#
# Issue warning e-mails if SSL certificates expire, using
# certwatch(1). Set NOCERTWATCH=yes in /etc/sysconfig/httpd
# to disable. Pass additional options to certwatch in the
# CERTWATCH_OPTS variable; see the man page for details.
#
# For certificates in pem files
watch_files_certs()
{
test -x /etc/httpd/modules/mod_ssl.so || return 0
test -r /etc/httpd/conf/httpd.conf || return 0
set -o pipefail # pick up exit code of httpd not sort
certs=`${httpd} ${OPTIONS} -t -DDUMP_CERTS 2>/dev/null | /bin/sort -u`
RETVAL=$?
test $RETVAL -eq 0 || return
for c in $certs; do
# Check whether a warning message is needed, then issue one if so.
/usr/bin/certwatch $CERTWATCH_OPTS -q "$c" &&
/usr/bin/certwatch $CERTWATCH_OPTS "$c" | /usr/sbin/sendmail -oem -oi -t 2>/dev/null
done
}
# For certificates in the database
watch_database_certs()
{
test -x /usr/bin/certutil || return 0
test -x /usr/lib/httpd/modules/libmodnss.so || return 0
test -r /etc/httpd/conf.d/nss.conf || return 0
# find path to mod_nss' database
database=`/usr/bin/gawk '/^NSSCertificateDatabase/ { print $2 }' /etc/httpd/conf.d/nss.conf`
# find the database prefix if any from the mod_nss config file
dbprefix=`/usr/bin/gawk '/^NSSDBPrefix/ { print $2 }' /etc/httpd/conf.d/nss.conf`
set -o pipefail # pick up exit code of certutil not gawk
nicknames=`certutil -L -d $database | /usr/bin/gawk '{ print $1 }'`
RETVAL=$?
test $RETVAL -eq 0 || return 0
for n in $nicknames; do
# Check whether a warning message is needed, then issue one if so.
/usr/bin/certwatch $CERTWATCH_OPTS -q -d "$database" -c "$dbprefix" -k "$dbprefix" "$n" &&
/usr/bin/certwatch $CERTWATCH_OPTS -d "$database" -c "$dbprefix" -k "$dbprefix" "$n" | /usr/sbin/sendmail -oem -oi -t 2>/dev/null
done
}
[ -r /etc/sysconfig/httpd ] && . /etc/sysconfig/httpd
# Use configured httpd binary
httpd=${HTTPD-/usr/sbin/httpd}
# Sanity checks
test -z "${NOCERTWATCH}" || exit 0
test -x ${httpd} || exit 0
test -x /usr/bin/certwatch || exit 0
test -x /usr/sbin/sendmail || exit 0
test -x /bin/sort || exit 0
watch_files_certs
watch_database_certs