/usr/lib/nagios/plugins/check_ssl_cert is in nagios-plugins-contrib 14.20141104.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#
# check_ssl_cert
#
# Checks an X.509 certificate:
# - checks if the server is running and delivers a valid certificate
# - checks if the CA matches a given pattern
# - checks the validity
#
# See the INSTALL file for installation instructions
#
# Copyright (c) 2007-2012 ETH Zurich.
#
# This module is free software; you can redistribute it and/or modify it
# under the terms of GNU general public license (gpl) version 3.
# See the LICENSE file for details.
#
# RCS information
# enable substitution with:
# $ svn propset svn:keywords "Id Revision HeadURL Source Date"
#
# $Id: check_ssl_cert 1353 2014-02-28 10:32:11Z corti $
# $Revision: 1353 $
# $HeadURL: https://svn.id.ethz.ch/nagios_plugins/check_ssl_cert/check_ssl_cert $
# $Date: 2014-02-28 11:32:11 +0100 (Fri, 28 Feb 2014) $
################################################################################
# Constants
VERSION=1.16.1
SHORTNAME="SSL_CERT"
VALID_ATTRIBUTES=",startdate,enddate,subject,issuer,modulus,serial,hash,email,ocsp_uri,fingerprint,"
################################################################################
# Functions
################################################################################
# Prints usage information
# Params
# $1 error message (optional)
usage() {
if [ -n "$1" ] ; then
echo "Error: $1" 1>&2
fi
#### The following line is 80 characters long (helps to fit the help text in a standard terminal)
######--------------------------------------------------------------------------------
echo
echo "Usage: check_ssl_cert -H host [OPTIONS]"
echo
echo "Arguments:"
echo " -H,--host host server"
echo
echo "Options:"
echo " -A,--noauth ignore authority warnings (expiration only)"
echo " --altnames matches the pattern specified in -n with alternate"
echo " names too"
echo " -C,--clientcert path use client certificate to authenticate"
echo " --clientpass phrase set passphrase for client certificate."
echo " -c,--critical days minimum number of days a certificate has to be valid"
echo " to issue a critical status"
echo " -e,--email address pattern to match the email address contained in the"
echo " certificate"
echo " -f,--file file local file path (works with -H localhost only)"
echo " -h,--help,-? this help message"
echo " --long-output list append the specified comma separated (no spaces) list"
echo " of attributes to the plugin output on additional lines."
echo " Valid attributes are:"
echo " enddate, startdate, subject, issuer, modulus, serial,"
echo " hash, email, ocsp_uri and fingerprint."
echo " 'all' will include all the available attributes."
echo " -i,--issuer issuer pattern to match the issuer of the certificate"
echo " -n,--cn name pattern to match the CN of the certificate"
echo " -N,--host-cn match CN with the host name"
echo " -o,--org org pattern to match the organization of the certificate"
echo " --openssl path path of the openssl binary to be used"
echo " -p,--port port TCP port"
echo " -P,--protocol protocol use the specific protocol {http|smtp|pop3|imap|ftp|xmpp}"
echo " http: default"
echo " smtp,pop3,imap,ftp: switch to TLS"
echo " -s,--selfsigned allows self-signed certificates"
echo " -S,--ssl version force SSL version (2,3)"
echo " -r,--rootcert path root certificate or directory to be used for"
echo " certficate validation"
echo " -t,--timeout seconds timeout after the specified time"
echo " (defaults to 15 seconds)"
echo " --temp dir directory where to store the temporary files"
echo " --tls1 force TLS version 1"
echo " -v,--verbose verbose output"
echo " -V,--version version"
echo " -w,--warning days minimum number of days a certificate has to be valid"
echo " to issue a warning status"
echo
echo "Deprecated options:"
echo " -d,--days days minimum number of days a certificate has to be valid"
echo " (see --critical and --warning)"
echo
echo "Report bugs to: Matteo Corti <matteo.corti@id.ethz.ch>"
echo
exit 3
}
################################################################################
# Exits with a critical message
# Params
# $1 error message
critical() {
if [ -n "${CN}" ] ; then
tmp=" ${CN}"
fi
printf '%s CRITICAL%s: %s%s%s\n' "${SHORTNAME}" "${tmp}" "$1" "${PERFORMANCE_DATA}" "${LONG_OUTPUT}"
exit 2
}
################################################################################
# Exits with a warning message
# Param
# $1 warning message
warning() {
if [ -n "${CN}" ] ; then
tmp=" ${CN}"
fi
printf '%s WARN%s: %s%s%s\n' "${SHORTNAME}" "${tmp}" "$1" "${PERFORMANCE_DATA}" "${LONG_OUTPUT}"
exit 1
}
################################################################################
# Exits with an 'unkown' status
# Param
# $1 message
unknown() {
if [ -n "${CN}" ] ; then
tmp=" ${CN}"
fi
printf '%s UNKNOWN%s: %s\n' "${SHORTNAME}" "${tmp}" "$1"
exit 3
}
################################################################################
# Executes command with a timeout
# Params:
# $1 timeout in seconds
# $2 command
# Returns 1 if timed out 0 otherwise
exec_with_timeout() {
time=$1
# start the command in a subshell to avoid problem with pipes
# (spawn accepts one command)
command="/bin/sh -c \"$2\""
if [ -n "${TIMEOUT_BIN}" ] ; then
eval "${TIMEOUT_BIN} $time $command"
elif [ -n "${EXPECT}" ] ; then
expect -c "set echo \"-noecho\"; set timeout $time; spawn -noecho $command; expect timeout { exit 1 } eof { exit 0 }"
if [ $? = 1 ] ; then
critical "Timeout after ${time} seconds"
fi
else
eval "${command}"
fi
}
################################################################################
# Checks if a given program is available and executable
# Params
# $1 program name
# Returns 1 if the program exists and is executable
check_required_prog() {
PROG=$(which "$1" 2> /dev/null)
if [ -z "$PROG" ] ; then
critical "cannot find $1"
fi
if [ ! -x "$PROG" ] ; then
critical "$PROG is not executable"
fi
}
################################################################################
# Tries to fetch the certificate
fetch_certificate() {
# check if a protocol was specified (if not HTTP switch to TLS)
if [ -n "${PROTOCOL}" ] && [ "${PROTOCOL}" != "http" ] && [ "${PROTOCOL}" != "https" ] ; then
case "${PROTOCOL}" in
smtp|pop3|imap|ftp|xmpp)
exec_with_timeout "$TIMEOUT" "echo 'Q' | $OPENSSL s_client ${CLIENT} ${CLIENTPASS} -starttls ${PROTOCOL} -connect $HOST:$PORT ${SERVERNAME} -verify 6 ${ROOT_CA} ${SSL_VERSION} 2> ${ERROR} 1> ${CERT}"
;;
*)
unknown "Error: unsupported protocol ${PROTOCOL}"
esac
elif [ -n "${FILE}" ] ; then
if [ "${HOST}" = "localhost" ] ; then
exec_with_timeout "$TIMEOUT" "/bin/cat '${FILE}' 2> ${ERROR} 1> ${CERT}"
else
unknown "Error: option 'file' works with -H localhost only"
fi
else
exec_with_timeout "$TIMEOUT" "echo 'Q' | $OPENSSL s_client ${CLIENT} ${CLIENTPASS} -connect $HOST:$PORT ${SERVERNAME} -verify 6 ${ROOT_CA} ${SSL_VERSION} 2> ${ERROR} 1> ${CERT}"
fi
if [ $? -ne 0 ] ; then
critical "Error: $(head -n 1 ${ERROR})"
fi
}
main() {
################################################################################
# Main
################################################################################
# default values
PORT=443
TIMEOUT=15
VERBOSE=""
OPENSSL=""
# set the default temp dir if not set
if [ -z "${TMPDIR}" ] ; then
TMPDIR="/tmp"
fi
################################################################################
# process command line options
#
# we do no use getopts since it is unable to process long options
while true; do
case "$1" in
########################################
# options without arguments
-A|--noauth) NOAUTH=1; shift ;;
--altnames) ALTNAMES=1; shift ;;
-h|--help|-\?) usage; exit 0 ;;
-N|--host-cn) COMMON_NAME="__HOST__"; shift ;;
-s|--selfsigned) SELFSIGNED=1; shift ;;
--tls1) SSL_VERSION="-tls1"; shift ;;
-v|--verbose) VERBOSE=1; shift ;;
-V|--version) echo "check_ssl_cert version ${VERSION}"; exit 3; ;;
########################################
# options with arguments
-c|--critical) if [ $# -gt 1 ]; then
CRITICAL=$2; shift 2
else
unknown "-c,--critical requires an argument"
fi ;;
# deprecated option: used to be as --warning
-d|--days) if [ $# -gt 1 ]; then
WARNING=$2; shift 2
else
unknown "-d,--days requires an argument"
fi ;;
-e|--email) if [ $# -gt 1 ]; then
ADDR=$2; shift 2
else
unknown "-e,--email requires an argument"
fi ;;
-f|--file) if [ $# -gt 1 ]; then
FILE=$2; shift 2
else
unknown "-f,--file requires an argument"
fi ;;
-H|--host) if [ $# -gt 1 ]; then
HOST=$2; shift 2
else
unknown "-H,--host requires an argument"
fi ;;
-i|--issuer) if [ $# -gt 1 ]; then
ISSUER=$2; shift 2
else
unknown "-i,--issuer requires an argument"
fi ;;
--long-output) if [ $# -gt 1 ]; then
LONG_OUTPUT_ATTR=$2; shift 2
else
unknown "--long-output requires an argument"
fi ;;
-n|--cn) if [ $# -gt 1 ]; then
COMMON_NAME=$2; shift 2
else
unknown "-n,--cn requires an argument"
fi ;;
-o|--org) if [ $# -gt 1 ]; then
ORGANIZATION=$2; shift 2
else
unknown "-o,--org requires an argument"
fi ;;
--openssl) if [ $# -gt 1 ]; then
OPENSSL=$2; shift 2
else
unknown "--openssl requires an argument"
fi ;;
-p|--port) if [ $# -gt 1 ]; then
PORT=$2; shift 2
else
unknown "-p,--port requires an argument"
fi ;;
-P|--protocol) if [ $# -gt 1 ]; then
PROTOCOL=$2; shift 2
else
unknown "-P,--protocol requires an argument"
fi ;;
-r|--rootcert) if [ $# -gt 1 ]; then
ROOT_CA=$2; shift 2
else
unknown "-r,--rootcert requires an argument"
fi ;;
-C|--clientcert) if [ $# -gt 1 ]; then
CLIENT_CERT=$2; shift 2
else
unknown "-c,--clientcert requires an argument"
fi ;;
--clientpass) if [ $# -gt 1 ]; then
CLIENT_PASS=$2; shift 2
else
unknown "--clientpass requires an argument"
fi ;;
-S|--ssl) if [ $# -gt 1 ]; then
if [ "$2" = "2" -o "$2" = "3" ] ; then
SSL_VERSION="-ssl$2" ; shift 2
else
unknown "invalid argument for --ssl"
fi
else
unknown "--ssl requires an argument"
fi ;;
-t|--timeout) if [ $# -gt 1 ]; then
TIMEOUT=$2; shift 2
else
unknown "-t,--timeout requires an argument"
fi ;;
--temp) if [ $# -gt 1 ] ; then
# override TMPDIR
TMPDIR=$2; shift 2
else
unknown "--temp requires an argument"
fi ;;
-w|--warning) if [ $# -gt 1 ]; then
WARNING=$2; shift 2
else
unknown "-w,--warning requires an argument"
fi ;;
########################################
# special
--) shift; break;;
-*) unknown "invalid option: $1" ;;
*) break;;
esac
done
################################################################################
# Set COMMON_NAME to hostname if -N was given as argument
if [ "$COMMON_NAME" = "__HOST__" ] ; then
COMMON_NAME=${HOST}
fi
################################################################################
# sanity checks
###############
# Check options
if [ -z "${HOST}" ] ; then
usage "No host specified"
fi
if [ -n "${ALTNAMES}" ] && [ -z "${COMMON_NAME}" ] ; then
unknown "--altnames requires a common name to match (--cn or --host-cn)"
fi
if [ -n "${ROOT_CA}" ] ; then
if [ ! -r "${ROOT_CA}" ] ; then
unknown "Cannot read root certificate ${ROOT_CA}"
fi
if [ -d "${ROOT_CA}" ] ; then
ROOT_CA="-CApath ${ROOT_CA}"
elif [ -f "${ROOT_CA}" ] ; then
ROOT_CA="-CAfile ${ROOT_CA}"
else
unknown "Root certificate of unknown type $(file "${ROOT_CA}" 2> /dev/null)"
fi
fi
if [ -n "${CLIENT_CERT}" ] ; then
if [ ! -r "${CLIENT_CERT}" ] ; then
unknown "Cannot read client certificate ${CLIENT_CERT}"
fi
fi
if [ -n "${CRITICAL}" ] ; then
if ! echo "${CRITICAL}" | grep -q '[0-9][0-9]*' ; then
unknown "invalid number of days ${CRITICAL}"
fi
fi
if [ -n "${WARNING}" ] ; then
if ! echo "${WARNING}" | grep -q '[0-9][0-9]*' ; then
unknown "invalid number of days ${WARNING}"
fi
fi
if [ -n "${CRITICAL}" ] && [ -n "${WARNING}" ] ; then
if [ "${WARNING}" -le "${CRITICAL}" ] ; then
unknown "--warning (${WARNING}) is less than or equal to --critical (${CRITICAL})"
fi
fi
if [ -n "${TMPDIR}" ] ; then
if [ ! -d "${TMPDIR}" ] ; then
unknown "${TMPDIR} is not a directory";
fi
if [ ! -w "${TMPDIR}" ] ; then
unknown "${TMPDIR} is not writable";
fi
fi
if [ -n "${OPENSSL}" ] ; then
if [ ! -x "${OPENSSL}" ] ; then
unknown "${OPENSSL} ist not an executable"
fi
if [ "${OPENSSL##*/}" != 'openssl' ] ; then
unknown "${OPENSSL} ist not an openssl executable"
fi
fi
#######################
# Check needed programs
# OpenSSL
if [ -z "${OPENSSL}" ] ; then
check_required_prog openssl
OPENSSL=$PROG
fi
# Expect (optional)
EXPECT=$(which expect 2> /dev/null)
test -x "${EXPECT}" || EXPECT=""
if [ -n "${VERBOSE}" ] ; then
if [ -z "${EXPECT}" ] ; then
echo "expect not available"
else
echo "expect available (${EXPECT})"
fi
fi
# Timeout (optional)
TIMEOUT_BIN=$(which timeout 2> /dev/null)
test -x "${TIMEOUT_BIN}" || TIMEOUT_BIN=""
if [ -n "${VERBOSE}" ] ; then
if [ -z "${TIMEOUT_BIN}" ] ; then
echo "timeout not available"
else
echo "timeout available (${TIMEOUT_BIN})"
fi
fi
if [ -z "${TIMEOUT_BIN}" ] && [ -z "${EXPECT}" ] && [ -n "${VERBOSE}" ] ; then
echo "disabling timeouts"
fi
# Perl with Date::Parse (optional)
PERL=$(which perl 2> /dev/null)
test -x "${PERL}" || PERL=""
if [ -z "${PERL}" ] && [ -n "${VERBOSE}" ] ; then
echo "Perl not found: disabling date computations"
fi
if ! ${PERL} -e "use Date::Parse;" > /dev/null 2>&1 ; then
if [ -n "${VERBOSE}" ] ; then
echo "Perl module Date::Parse not installed: disabling date computations"
fi
PERL=""
fi
################################################################################
# check if openssl s_client supports the -servername option
#
# openssl s_client does not have a -help option
# => we supply an invalid command line option to get the help
# on standard error
#
SERVERNAME=
if ${OPENSSL} s_client not_a_real_option 2>&1 | grep -q -- -servername ; then
if [ -n "${COMMON_NAME}" ] ; then
SERVERNAME="-servername ${COMMON_NAME}"
else
SERVERNAME="-servername ${HOST}"
fi
else
if [ -n "${VERBOSE}" ] ; then
echo "'${OPENSSL} s_client' does not support '-servername': disabling virtual server support"
fi
fi
################################################################################
# fetch the X.509 certificate
# temporary storage for the certificate and the errors
CERT=$( mktemp -t "${0##*/}XXXXXX" 2> /dev/null )
if [ -z "${CERT}" ] || [ ! -w "${CERT}" ] ; then
unknown 'temporary file creation failure.'
fi
ERROR=$( mktemp -t "${0##*/}XXXXXX" 2> /dev/null )
if [ -z "${ERROR}" ] || [ ! -w "${ERROR}" ] ; then
unknown 'temporary file creation failure.'
fi
if [ -n "${VERBOSE}" ] ; then
echo "downloading certificate to ${TMPDIR}"
fi
CLIENT=""
if [ -n "${CLIENT_CERT}" ] ; then
CLIENT="-cert ${CLIENT_CERT}"
fi
CLIENTPASS=""
if [ -n "${CLIENT_PASS}" ] ; then
CLIENTPASS="-pass pass:${CLIENT_PASS}"
fi
# cleanup before program termination
# using named signals to be POSIX compliant
trap 'rm -f $CERT $ERROR' EXIT HUP INT QUIT TERM
fetch_certificate
if grep -q 'sslv3\ alert\ unexpected\ message' "${ERROR}" ; then
if [ -n "${SERVERNAME}" ] ; then
# some OpenSSL versions have problems with the -servername option
# we try without
if [ -n "${VERBOSE}" ] ; then
echo "'${OPENSSL} s_client' returned an error: trying without '-servername'"
fi
SERVERNAME=
fetch_certificate
fi
if grep -q 'sslv3\ alert\ unexpected\ message' "${ERROR}" ; then
critical "cannot fetch certificate: OpenSSL got an unexpected message"
fi
fi
if ! grep -q "CERTIFICATE" "${CERT}" ; then
if [ -n "${FILE}" ] ; then
critical "'${FILE}' is not a valid certificate file"
else
# See
# http://stackoverflow.com/questions/1251999/sed-how-can-i-replace-a-newline-n
#
# - create a branch label via :a
# - the N command appends a newline and and the next line of the input
# file to the pattern space
# - if we are before the last line, branch to the created label $!ba
# ($! means not to do it on the last line (as there should be one final newline))
# - finally the substitution replaces every newline with a space on
# the pattern space
ERROR_MESSAGE=$(sed -e ':a' -e 'N' -e '$!ba' -e 's/\n/; /g' "${ERROR}")
if [ -n "${VERBOSE}" ] ; then
echo "Error: ${ERROR_MESSAGE}"
fi
critical "No certificate returned (${ERROR_MESSAGE})"
fi
fi
################################################################################
# parse the X.509 certificate
DATE=$($OPENSSL x509 -in "${CERT}" -enddate -noout | sed -e "s/^notAfter=//")
CN=$($OPENSSL x509 -in "${CERT}" -subject -noout | sed -e "s/^.*\/CN=//" -e "s/\/[A-Za-z][A-Za-z]*=.*\$//")
CA_O=$($OPENSSL x509 -in "${CERT}" -issuer -noout | sed -e "s/^.*\/O=//" -e "s/\/[A-Z][A-Z]*=.*\$//")
CA_CN=$($OPENSSL x509 -in "${CERT}" -issuer -noout | sed -e "s/^.*\/CN=//" -e "s/\/[A-Za-z][A-Za-z]*=.*\$//")
################################################################################
# Generate the long output
if [ -n "${LONG_OUTPUT_ATTR}" ] ; then
check_attr() {
ATTR=$1
if ! echo "${VALID_ATTRIBUTES}" | grep -q ",${ATTR}," ; then
unknown "Invalid certificate attribute: ${ATTR}"
else
value=$(${OPENSSL} x509 -in "${CERT}" -noout -"${ATTR}" | sed -e "s/.*=//")
LONG_OUTPUT="${LONG_OUTPUT}\n${ATTR}: ${value}"
fi
}
# split on comma
if [ "${LONG_OUTPUT_ATTR}" = "all" ] ; then
LONG_OUTPUT_ATTR=${VALID_ATTRIBUTES}
fi
attributes=$( echo ${LONG_OUTPUT_ATTR} | tr ',' "\n" )
for attribute in $attributes ; do
check_attr "${attribute}"
done
fi
################################################################################
# compute for how many days the certificate will be valid
if [ -n "${PERL}" ] ; then
CERT_END_DATE=$($OPENSSL x509 -in "${CERT}" -noout -enddate | sed -e "s/.*=//")
DAYS_VALID=$( perl - "${CERT_END_DATE}" <<-"EOF"
use strict;
use warnings;
use Date::Parse;
my $cert_date = str2time( $ARGV[0] );
my $days = int (( $cert_date - time ) / 86400 + 0.5);
print "$days\n";
EOF
)
if [ -n "${VERBOSE}" ] ; then
if [ "${DAYS_VALID}" -ge 0 ] ; then
echo "The certificate will expire in ${DAYS_VALID} day(s)"
else
echo "The certificate expired "$((- DAYS_VALID))" day(s) ago"
fi
fi
PERFORMANCE_DATA="|days=$DAYS_VALID;${WARNING};${CRITICAL};;"
fi
################################################################################
# check the CN (this will not work as expected with wildcard certificates)
if [ -n "$COMMON_NAME" ] ; then
ok=''
case $COMMON_NAME in
$CN) ok='true' ;;
esac
# check alterante names
if [ -n "${ALTNAMES}" ] ; then
for alt_name in $( $OPENSSL x509 -in "${CERT}" -text | \
grep --after-context=1 '509v3 Subject Alternative Name:' | \
tail -n 1 | sed -e "s/DNS://g" | sed -e "s/,//g" ) ; do
case $COMMON_NAME in
$alt_name) ok='true' ;;
esac
done
fi
if [ -z "$ok" ] ; then
critical "invalid CN ('$CN' does not match '$COMMON_NAME')"
fi
fi
################################################################################
# check the issuer
if [ -n "$ISSUER" ] ; then
ok=''
CA_ISSUER_MATCHED=''
if echo "$CA_CN" | grep -q "^${ISSUER}\$" ; then
ok='true'
CA_ISSUER_MATCHED="${CA_CN}"
fi
if echo "$CA_O" | grep -q "^${ISSUER}\$" ; then
ok='true'
CA_ISSUER_MATCHED="${CA_O}"
fi
if [ -z "$ok" ] ; then
critical "invalid CA ('$ISSUER' does not match '$CA_O' or '$CA_CN')"
fi
else
CA_ISSUER_MATCHED="${CA_CN}"
fi
################################################################################
# check the validity
# we always check expired certificates
if ! $OPENSSL x509 -in "${CERT}" -noout -checkend 0 ; then
critical "certificate is expired (was valid until $DATE)"
fi
if [ -n "${CRITICAL}" ] ; then
if ! $OPENSSL x509 -in "${CERT}" -noout -checkend $(( CRITICAL * 86400 )) ; then
critical "certificate will expire on $DATE"
fi
fi
if [ -n "${WARNING}" ] ; then
if ! $OPENSSL x509 -in "${CERT}" -noout -checkend $(( WARNING * 86400 )) ; then
warning "certificate will expire on $DATE"
fi
fi
################################################################################
# check the organization
if [ -n "$ORGANIZATION" ] ; then
ORG=$($OPENSSL x509 -in "${CERT}" -subject -noout | sed -e "s/.*\/O=//" -e "s/\/.*//")
if ! echo "$ORG" | grep -q "^$ORGANIZATION" ; then
critical "invalid organization ('$ORGANIZATION' does not match '$ORG')"
fi
fi
################################################################################
# check the organization
if [ -n "$ADDR" ] ; then
EMAIL=$($OPENSSL x509 -in "${CERT}" -email -noout)
if [ -n "${VERBOSE}" ] ; then
echo "checking email (${ADDR}): ${EMAIL}"
fi
if [ -z "${EMAIL}" ] ; then
critical "the certficate does not contain an email address"
fi
if ! echo "$EMAIL" | grep -q "^$ADDR" ; then
critical "invalid email ($ADDR does not match $EMAIL)"
fi
fi
################################################################################
# Check if the certificate was verified
if [ -z "${NOAUTH}" ] && grep -q '^verify\ error:' "${ERROR}" ; then
if grep -q '^verify\ error:num=[0-9][0-9]*:self\ signed\ certificate' "${ERROR}" ; then
if [ -z "${SELFSIGNED}" ] ; then
critical "Cannot verify certificate\nself signed certificate"
else
SELFSIGNEDCERT="self signed "
fi
else
# process errors
details=$(grep '^verify\ error:' "${ERROR}" | sed -e "s/verify\ error:num=[0-9]*:/verification error: /" )
critical "Cannot verify certificate\n${details}"
fi
fi
################################################################################
# If we get this far, assume all is well. :)
# if --altnames was specified we show the specified CN instead of
# the certificate CN
if [ -n "${ALTNAMES}" ] && [ -n "${COMMON_NAME}" ] ; then
CN=${COMMON_NAME}
fi
if [ -n "${DAYS_VALID}" ] ; then
# nicer formatting
if [ "${DAYS_VALID}" -gt 1 ] ; then
DAYS_VALID=" (expires in ${DAYS_VALID} days)"
elif [ "${DAYS_VALID}" -eq 1 ] ; then
DAYS_VALID=" (expires tomorrow)"
elif [ "${DAYS_VALID}" -eq 0 ] ; then
DAYS_VALID=" (expires today)"
elif [ "${DAYS_VALID}" -eq -1 ] ; then
DAYS_VALID=" (expired yesterday)"
else
DAYS_VALID=" (expired ${DAYS_VALID} days ago)"
fi
fi
echo "${SHORTNAME} OK - X.509 ${SELFSIGNEDCERT}certificate for '${CN}' from '${CA_ISSUER_MATCHED}' valid until ${DATE}${DAYS_VALID}${PERFORMANCE_DATA}${LONG_OUTPUT}"
exit 0
}
if [ "${1}" != "--source-only" ]; then
main "${@}"
fi
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