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  1. 348
      ruby/gitlabsos.rb
  2. 36
      shell/k8s/k8s-backup.sh
  3. 955
      shell/ssl/ssl-cert-check.sh

348
ruby/gitlabsos.rb

@ -0,0 +1,348 @@ @@ -0,0 +1,348 @@
#!/opt/gitlab/embedded/bin/ruby
# Authors: gitlab.com/cody
# This script provides a unified method of gathering system information and
# GitLab application information. Please consider this script to be in an Alpha
# state.
require 'json'
require 'tmpdir'
require 'fileutils'
require 'open3'
require 'logger'
require 'optparse'
require 'pathname'
# allows logging to stdout and a log file
# https://stackoverflow.com/a/6407200
class MultiIO
def initialize(*targets)
@targets = targets
end
def write(*args)
@targets.each { |t| t.write(*args) }
end
def close
@targets.each(&:close)
end
end
module GitLabSOS
# If you intend to add a large file to this list, you'll need to change the
# file.read call to something that streams rather than slurps
module Files
def list_files
[
{ source: '/opt/gitlab/version-manifest.json', destination: './opt/gitlab/version-manifest.json' },
{ source: '/opt/gitlab/version-manifest.txt', destination: './opt/gitlab/version-manifest.txt' },
{ source: '/var/log/messages', destination: './var/log/messages' },
{ source: '/var/log/syslog', destination: './var/log/syslog' },
{ source: '/proc/mounts', destination: 'mount' },
{ source: '/proc/meminfo', destination: 'meminfo' },
{ source: '/proc/cpuinfo', destination: 'cpuinfo' },
{ source: '/etc/selinux/config', destination: './etc/selinux/config' },
{ source: '/proc/sys/kernel/tainted', destination: 'tainted' },
{ source: '/etc/os-release', destination: './etc/os-release' },
{ source: '/etc/fstab', destination: './etc/fstab' },
{ source: '/etc/security/limits.conf', destination: './etc/security/limits.conf' },
{ source: '/proc/sys/vm/swappiness', destination: 'running_swappiness' },
{ source: '/proc/pressure/io', destination: 'pressure_io.txt' },
{ source: '/proc/pressure/memory', destination: 'pressure_mem.txt' },
{ source: '/proc/pressure/cpu', destination: 'pressure_cpu.txt' }
]
end
def run_files
list_files.each do |file_info|
dest = File.join(tmp_dir, file_info[:destination])
logger.debug "processing #{file_info[:source]}.."
result = begin
# this works better than FileUtils.cp for stuff like /proc/mounts
`tail -c #{options[:max_file_size]} #{file_info[:source]}`
rescue Errno::ENOENT => e
# file doesn't exist
e.message
end
FileUtils.mkdir_p(File.dirname(dest))
logger.debug "writing #{result.bytesize} bytes to #{dest}"
File.write(dest, result)
end
end
def run_gitlab_rb
return unless options[:grab_config]
# don't run if __dir__ can't be resolved (i.e. downloaded via curl)
return unless __dir__
sanitizer = File.join(__dir__, 'sanitizer/sanitizer')
if File.file?(sanitizer)
logger.info 'Sanitizer module found. `gitlab.rb` file will be collected.'
logger.info 'A copy will be printed on the screen for you to review.'
else
logger.info 'Sanitizer not found. `gitlab.rb` file will not be collected'
return
end
dest = File.join(tmp_dir, 'etc/gitlab/gitlab.rb')
FileUtils.mkdir_p(File.dirname(dest))
logger.info 'Sanitizing /etc/gitlab/gitlab.rb file'
`/opt/gitlab/embedded/bin/ruby #{sanitizer} --save #{dest}`
# We use 'puts' to show the sanitized gitlab.rb file without
# logging it in gitlabsos.log
puts ''
puts '======================== Sanitized gitlab.rb ========================'
puts 'PLEASE CAREFULLY REVIEW THIS FILE FOR ANY SENSITIVE INFO'
puts 'THE BELOW INFO WILL BE INCLUDED (SANITIZED) IN YOUR GITLABSOS ARCHIVE'
puts '====================================================================='
puts File.read(dest)
puts '====================================================================='
puts 'NOTICE: You can skip this with --skip-config'
puts '====================================================================='
puts ''
end
end
module Commands
# Add commands to this list that could help collect useful information
# cmd is the command that you want to run, including its options
# result_path is the filename for the output of the cmd that you want to run.
def list_commands
[
{ cmd: 'dmesg -T', result_path: 'dmesg' },
{ cmd: 'uname -a', result_path: 'uname' },
{ cmd: 'su - git -c "ulimit -a"', result_path: 'ulimit' },
{ cmd: 'hostname --fqdn', result_path: 'hostname' },
{ cmd: 'getenforce', result_path: 'getenforce' },
{ cmd: 'sestatus', result_path: 'sestatus' },
{ cmd: 'systemctl list-unit-files', result_path: 'systemctl_unit_files' },
{ cmd: 'uptime', result_path: 'uptime' },
{ cmd: 'df -hT', result_path: 'df_hT' },
{ cmd: 'df -iT', result_path: 'df_inodes' },
{ cmd: 'free -m', result_path: 'free_m' },
{ cmd: 'ps -eo user,pid,%cpu,%mem,vsz,rss,stat,start,time,wchan:24,command', result_path: 'ps' },
{ cmd: 'netstat -txnpl', result_path: 'netstat' },
{ cmd: 'netstat -i', result_path: 'netstat_i' },
{ cmd: 'vmstat -w 1 10', result_path: 'vmstat' },
{ cmd: 'mpstat -P ALL 1 10', result_path: 'mpstat' },
{ cmd: 'pidstat -l 1 15', result_path: 'pidstat' },
{ cmd: 'iostat -xz 1 10', result_path: 'iostat' },
{ cmd: 'nfsiostat 1 10', result_path: 'nfsiostat' },
{ cmd: 'nfsstat -v', result_path: 'nfsstat' },
{ cmd: 'iotop -aoPqt -b -d 1 -n 10', result_path: 'iotop' },
{ cmd: 'top -c -b -n 1 -o %CPU', result_path: 'top_cpu' },
{ cmd: 'top -c -b -n 1 -o RES', result_path: 'top_res' },
{ cmd: 'rpm -vV gitlab-ee', result_path: 'rpm_verify' },
{ cmd: 'sar -n DEV 1 10', result_path: 'sar_dev' },
{ cmd: 'sar -n TCP,ETCP 1 10', result_path: 'sar_tcp' },
{ cmd: 'lscpu', result_path: 'lscpu' },
{ cmd: 'ntpq -pn', result_path: 'ntpq' },
{ cmd: 'timedatectl', result_path: 'timedatectl' },
{ cmd: 'gitlab-ctl status', result_path: 'gitlab_status' },
{ cmd: 'gitlab-rake db:migrate:status', result_path: 'gitlab_migrations' },
{ cmd: 'ss -paxioe', result_path: 'sockstat' },
{ cmd: 'sysctl -a', result_path: 'sysctl_a' },
{ cmd: 'ifconfig', result_path: 'ifconfig' },
{ cmd: 'ip address', result_path: 'ip_address' }
]
end
def run_commands
logger.info 'Collecting diagnostics. This will probably take a few minutes..'
list_commands.each do |cmd_info|
dest = File.join(tmp_dir, cmd_info[:result_path])
full_cmd = "#{cmd_info[:cmd]} | tail -c #{options[:max_file_size]}"
logger.debug "exec: #{full_cmd}"
result = begin
out, err, _status = Open3.capture3(full_cmd)
out + err
end
File.write(dest, result)
end
end
end
module LogDirectories
def run_log_dirs
logger.info 'Getting GitLab logs..'
logger.debug 'determining log directories..'
# Ensure empty array if gitlab config file couldn't found or read
log_dirs = config.key?('normal') ? deep_fetch(config['normal'], 'log_directory') : []
log_dirs << '/var/log/gitlab'
logger.debug "using #{log_dirs}"
log_dirs.uniq.each do |log_dir|
unless Dir.exist?(log_dir)
logger.warn "log directory '#{log_dir}' does not exist or is not a directory"
next
end
logger.debug "searching #{log_dir} for log files.."
find_files(log_dir).each do |log|
process_log(log) if log.mtime > Time.now - (60 * 60 * 12) && log.basename.to_s !~ /.*.gz|^@|lock/
end
end
end
def process_log(log)
begin # rubocop:disable Style/RedundantBegin -- To maintain compatibility with Ruby < 2.5
logger.debug "processing log - #{log}.."
content = `tail -c #{options[:max_file_size]} #{log}`
content = content.lines.drop(1).join unless content.lines.count < 2
FileUtils.mkdir_p(File.dirname(File.join(tmp_dir, log)))
logger.debug "writing #{content.bytesize} bytes to #{File.join(tmp_dir, log)}"
File.write(File.join(tmp_dir, log), content)
rescue => e
logger.error "could not process log - #{log}"
logger.error e.message
end
end
def find_files(*paths)
paths.flatten.map do |path|
path = Pathname.new(path)
path.file? ? [path] : find_files(path.children)
end.flatten
end
end
# This is the first itteration designed to make
# https://gitlab.com/gitlab-com/support/toolbox/gitlabsos/issues/11 and
# https://gitlab.com/gitlab-com/support/toolbox/gitlabsos/issues/7 easier and
# any aditional options/filter we can think of in the futher.
class Client
attr_accessor :options, :logger, :log_file, :tmp_dir, :config
include Files
include Commands
include LogDirectories
HOSTNAME = `hostname`.strip
REPORT_NAME = "gitlabsos.#{HOSTNAME}_#{Time.now.strftime('%Y%m%d%H%M%S')}".freeze
TMP_DIR = File.join(ENV['TMP'] || ENV['TMPDIR'] || '/tmp', REPORT_NAME)
def initialize(args)
@args = args
parse_options!
setup_logger
root_check
setup_config
run
end
def setup_config
self.config = {}
config_file = Dir.glob('/opt/gitlab/embedded/nodes/*.json').max_by { |f| File.mtime(f) }
# Ignore if missing
return nil unless config_file
# Grab first file
self.config = JSON.parse File.read(config_file)
end
def default_options
{
output_file: File.expand_path("./#{REPORT_NAME}.tar.gz"),
logs_only: false,
log_level: Logger::INFO,
root_check: true,
max_file_size: 10 * 1_000_000, # 10MB
grab_config: true
}
end
def root_check
raise 'Script must be run as root' unless Process.uid.zero? || !options[:root_check]
end
def create_temp_directory
self.tmp_dir = FileUtils.mkdir_p(TMP_DIR).join
rescue Errno::ENOENT => e
# TODO: Handle error Permission denied.
e.message
end
def setup_logger
create_temp_directory
self.log_file ||= File.open(File.join(TMP_DIR, 'gitlabsos.log'), 'a')
self.logger = Logger.new MultiIO.new(STDOUT, log_file)
logger.level = options[:log_level]
logger.progname = 'gitlabsos'
logger.formatter = proc do |severity, datetime, progname, msg|
"[#{datetime.strftime('%Y-%m-%dT%H:%M:%S.%6N')}] #{severity} -- #{progname}: #{msg}\n"
end
end
# this method is used to fetch all values out of a hash for any given key
# I'm just using it to get custom log directories
def deep_fetch(hash, key)
hash.values.map do |obj|
next if obj.class != Hash
if obj.key? key
obj[key]
else
deep_fetch(obj, key)
end
end.flatten.compact
end
def parse_options!
self.options = default_options
OptionParser.new do |opts|
opts.banner = 'Usage: gitlabsos.rb [options]'
opts.on('-o FILE', '--output-file FILE', 'Write gitlabsos report to FILE') do |file|
options[:output_file] = File.expand_path(file)
end
opts.on('--debug', 'Set the log level to debug') do
options[:log_level] = Logger::DEBUG
end
opts.on('--skip-root-check', 'Run the script as non-root. Warning: script might fail') do
options[:root_check] = false
end
opts.on('--skip-config', 'Don\'t include a sanitized copy of the gitlab.rb configuration file.') do
options[:grab_config] = false
end
opts.on('--max-file-size MB', 'Set the max file size (in megabytes) for any file in the report') do |mb|
options[:max_file_size] = mb.to_i * 1_000_000
end
opts.on('-h', '--help', 'Prints this help') do
puts opts
exit
end
end.parse!(@args)
end
def run
logger.info 'Starting gitlabsos report'
logger.info 'Gathering configuration and system info..'
run_files
run_commands
run_log_dirs
run_gitlab_rb
logger.info 'Report finished.'
log_file.close
puts "Saving to: '#{options[:output_file]}'"
system("tar -czf #{options[:output_file]} #{File.basename(TMP_DIR)}",
chdir: File.dirname(TMP_DIR))
FileUtils.remove_dir(TMP_DIR)
end
end
end
GitLabSOS::Client.new(ARGV)

36
shell/k8s/k8s-backup.sh

@ -19,8 +19,10 @@ set -o pipefail # Use last non-zero exit code in a pipeline @@ -19,8 +19,10 @@ set -o pipefail # Use last non-zero exit code in a pipeline
# environment configuration
######################################################################################################
KUBECONFIG="${HOME:-'~'}/.kube/config" # kubenetes config
NAMESPACE="${NAMESPACE:-all}"
RESOURCES="${RESOURCES:-all}"
WITH_CLUSTER="true"
RESOURCES_PATH="/opt/k8s-backup_$(date +%s)"
######################################################################################################
@ -29,33 +31,40 @@ RESOURCES_PATH="/opt/k8s-backup_$(date +%s)" @@ -29,33 +31,40 @@ RESOURCES_PATH="/opt/k8s-backup_$(date +%s)"
function get::resource() {
ns=$1
ns=${1:-cluster}
namespaced="true"
if [[ "$ns" == "cluster" ]]; then
namespaced="false"
[ -d "$RESOURCES_PATH/cluster" ] || mkdir -p "$RESOURCES_PATH/cluster"
fi
if [[ "${RESOURCES}" == "all" ]]; then
RESOURCES=$(kubectl api-resources --verbs=list --namespaced -o name | grep -v "events.events.k8s.io" | grep -v "events" | sort |uniq)
RESOURCES=$($kubectl api-resources --verbs=list --namespaced=${namespaced} -o name | grep -v "events.events.k8s.io" | grep -v "events" | sort | uniq)
fi
for r in ${RESOURCES}; do
echo "Resource:" $r
for l in $(kubectl -n ${ns} get --ignore-not-found ${r} -o jsonpath="{$.items[*].metadata.name}");do
kubectl -n ${ns} get --ignore-not-found ${r} ${l} -o yaml \
for l in $($kubectl -n ${ns} get --ignore-not-found ${r} -o jsonpath="{$.items[*].metadata.name}");do
$kubectl -n ${ns} get --ignore-not-found ${r} ${l} -o yaml \
| sed -n "/ managedFields:/{p; :a; N; / name: ${l}/!ba; s/.*\\n//}; p" \
| sed -e 's/ uid:.*//g' \
-e 's/ resourceVersion:.*//g' \
-e 's/ selfLink:.*//g' \
-e 's/ creationTimestamp:.*//g' \
-e 's/ managedFields:.*//g' \
-e '/^\s*$/d' > "$RESOURCES_PATH/${n}/${l}.${r}.yaml"
-e '/^\s*$/d' > "$RESOURCES_PATH/${ns}/${l}_${r}.yaml"
done
done
}
function get::namespace() {
if [[ "${RESOURCES}" == "all" ]]; then
NAMESPACE=$(kubectl get ns -o jsonpath="{$.items[*].metadata.name}")
NAMESPACE=$($kubectl get ns -o jsonpath="{$.items[*].metadata.name}")
fi
for n in ${NAMESPACE};do
echo "Namespace:" $n
[ -d "$RESOURCES_PATH/$n" ] || mkdir -p "$RESOURCES_PATH/$n"
kubectl get ns ${n} --ignore-not-found -o yaml \
$kubectl get ns ${n} --ignore-not-found -o yaml \
| sed -n "/ managedFields:/{p; :a; N; / name: ${n}/!ba; s/.*\\n//}; p" \
| sed -e 's/ uid:.*//g' \
-e 's/ resourceVersion:.*//g' \
@ -78,8 +87,10 @@ Usage: @@ -78,8 +87,10 @@ Usage:
$(basename $0) [flag]
Flag:
-c,--kubeconfig Specify kubeconfig, default is ${HOME:-~}/.kube/config
-ns,--namespace namespace, default: all
-r,--resource resource, default: all
--with-cluster cluster resource.
-h,--help help info.
EOF
@ -93,12 +104,18 @@ EOF @@ -93,12 +104,18 @@ EOF
while [ "${1:-}" != "" ]; do
case $1 in
-c | --kubeconfig ) shift
KUBECONFIG=${1:-$KUBECONFIG}
;;
-ns | --namespace ) shift
NAMESPACE=${1:-$NAMESPACE}
;;
-r | --resource ) shift
RESOURCES=${1:-$RESOURCES}
;;
--with-cluster ) shift
WITH_CLUSTER=${1:-$WITH_CLUSTER}
;;
-h | --help ) help::usage
;;
* ) help::usage
@ -106,6 +123,9 @@ while [ "${1:-}" != "" ]; do @@ -106,6 +123,9 @@ while [ "${1:-}" != "" ]; do
shift
done
get::namespace
kubectl="kubectl --kubeconfig $KUBECONFIG"
#get::namespace
[[ "$WITH_CLUSTER" == "true" ]] && get::resource cluster || echo
echo "File: ${RESOURCES_PATH}"

955
shell/ssl/ssl-cert-check.sh

@ -0,0 +1,955 @@ @@ -0,0 +1,955 @@
#!/usr/bin/env bash
PROGRAMVERSION=4.14
#
# Program: SSL Certificate Check <ssl-cert-check>
#
# Source code home: https://github.com/Matty9191/ssl-cert-check
#
# Documentation: http://prefetch.net/articles/checkcertificate.html
#
# Author: Matty < matty at prefetch dot net >
#
# Last Updated: 11-12-2020
#
# Revision History:
#
# Version 4.14
# - Fixed HOST / PORT discovery @mhow2
#
# Version 4.13
# - Reverted the file checking logic which breaks $RETCODE
#
# Version 4.12
# - Fixed various logic errors and typos -- Daniel Lewart
#
# Version 4.10
# - Replace tabs with spaces
# - More shllcheck cleanup work
# - Remove unused DEBUG variable
# - Fixed an innocuous whitespace bug in TLSFLAG variable creation
# - Set the default TLS version to 1.1 (can be overridden with -v)
# - Switched openssl CLI options to use an array. The reasons why
# are documented here: http://mywiki.wooledge.org/BashFAQ/050
#
# Version 4.9
# - Add a signal handler to call the cleanup funtion
# if the script doesn't exit() cleanly -- Timothe Litt
#
# Version 4.8
# - More mail client fixes
#
# Version 4.7
# - Revert SENDER to ""
# - More shellcheck cleanup
#
# Version 4.6
# - Fixed programming logic error
#
# Version 4.5
# - Re-work mailx support for FreeBSD
# - More shellcheck fixes
#
# Version 4.4
# - Use command -v instead of which utility to satisfy shellcheck.
# - Fix unquoted MAIL and MAILMODE variables in help output
# - More shellcheck fixes
#
# Version 4.3
# - Fixed a typo in the program version
#
# Version 4.2
# - Change CERTDAYS to CERTDIFF in the e-mail subject.
#
# Version 4.1
# - Fix usage output
#
# Version 4.0
# - Updated the script syntax to align with UNIX shell programming
# - Check for DNS resolution failures
# - First round of updates to make shellcheck happy
# - Rework the logic to call mailx.
# - Print the version with the "-V" option.
# - Define the version in the PROGRAMVERSION variable
#
# Version 3.31
# - Fixed the test for the -servername flag -- Kitson Consulting.
#
# Version 3.30
# - Use highest returncode for Nagios output -- Marcel Pennewiss
# - Set RETCODE to 3 (unknown) if a certificate file does not exist -- Marcel Pennewiss
# - Add a "-d" option to specify a directory or file mask pattern -- Marcel Pennewiss
# - Add a "-N" option to create summarized Nagios output -- Marcel Pennewiss
# - Cleaned up many formatting -- Marcel Pennewiss
#
# Versione 3.29a
# - Added option to specify email sender address
#
# Version 3.29
# - Add the openssl -servername flag if it shows up in help.
#
# Version 3.28
# - Added a DEBUG option to assist with debugging folks who use the script
#
# Version 3.27
# - Allow white spaces to exist in the certificate file list
# - Add an additional check to pick up bad / non-existent certificates
# - Add a check to look for the existence of a mail program. Error out if it's not present.
# - Enable the TLS -servername extension by default - Juergen Knaack & Johan Denoyer
#
# Version 3.26
# - Allow the certificate type (PEM, DER, NET) to be passed on the command line
#
# Version 3.25
# - Check for "no route to host" errors -- Dan Doyle
# - Set RETCODE to 3 (unknown) if a connection error occurs -- Dan Doyle
# - Documentation fixes
#
# Version 3.24
# - Utilize the -clcerts option to limit the results to client certificates - Eitan Katznelson
#
# Version 3.23
# - Fixed typo in date2julian routine -- Ken Cook
#
# Version 3.22
# - Change the validation option to "-V"
# - Add a "-v" option to specify a specific protocol version (ssl2, ssl3 or tls)
#
# Version 3.21
# - Adjust e-mail checking to avoid exiting if notifications aren't enabled -- Nick Anderson
# - Added the number of days until expiration to the Nagios output -- Nick Anderson
#
# Version 3.20
# - Fixed a bug in certificate length checking -- Tim Nowaczyk
#
# Version 3.19
# - Added check to verify the certificate retrieved is valid
#
# Version 3.18
# - Add support for connecting to FTP servers -- Paul A Sand
#
# Version 3.17
# - Add support for connecting to imap servers -- Joerg Pareigis
#
# Version 3.16
# - Add support for connecting to the mail sbmission port -- Luis E. Munoz
#
# Version 3.15
# - Adjusted the file checking logic to use the correct certificate -- Maciej Szudejko
# - Add sbin to the default search paths for OpenBSD compatibility -- Alex Popov
# - Use cut instead of substring processing to ensure compatibility -- Alex Popov
#
# Version 3.14
# - Fixed the Common Name parser to handle DN's where the CN is not the last item
# eg. EmailAddr -- Jason Brothers
# - Added the ability to grab the serial number -- Jason Brothers
# - Added the "-b" option to print results without a header -- Jason Brothers
# - Added the "-v" option for certificate validation -- Jason Brothers
#
# Version 3.13
# - Updated the subject line to include the hostname as well as
# the common name embedded in the X509 certificate (if it's
# available) -- idea proposed by Mike Burns
#
# Version 3.12
# - Updated the license to allow redistribution and modification
#
# Version 3.11
# - Added ability to comment out lines in files passed
# to the "-f" option -- Brett Stauner
# - Fixed comment next to file processing logic
#
# Version 3.10
# - Fixed POP3 port -- Simon Matter
#
# Version 3.9
# - Switched binary location logic to use which utility
#
# Version 3.8
# - Fixed display on 80 column displays
# - Cleaned up the formatting
#
# Version 3.7
# - Fixed bug in NAGIOS tests -- Ben Allen
#
# Version 3.6
# - Added support for certificates stored in PKCS#12 databases -- Ken Gallo
# - Cleaned up comments
# - Adjusted variables to be more consistent
#
# Version 3.5
# - Added support for NAGIOS -- Quanah Gibson-Mount
# - Added additional checks for mail -- Quanah Gibson-Mount
# - Convert tabs to spaces -- Quanah Gibson-Mount
# - Cleaned up usage() routine
# - Added additional checks for openssl
#
# Version 3.4
# - Added a missing "{" to line 364 -- Ken Gallo
# - Move mktemp to the start of the main body to avoid errors
# - Adjusted default binary paths to make sure the script just works
# w/ Solaris, BSD and Linux hosts
#
# Version 3.3
# - Added common name from X.509 certificate file to E-mail body / header -- Doug Curtis
# - Fixed several documentation errors
# - Use mktemp to create temporary files
# - Convert printf, sed and awk to variables
# - Check for printf, sed, awk and mktemp binaries
# - Add additional logic to make sure mktemp returned a valid temporary file
#
# Version 3.2
# - Added option to list certificates in the file passed to "-f".
#
# Version 3.1
# - Added handling for starttls for smtp -- Marco Amrein
# - Added handling for starttls for pop3 (without s) -- Marco Amrein
# - Removed extra spacing at end of script
#
# Version 3.0
# - Added "-i" option to print certificate issuer
# - Removed $0 from Subject line of outbound e-mails
# - Fixed some typographical errors
# - Removed redundant "-b" option
#
# Version 2.0
# - Fixed an issue with e-mails formatting incorrectly
# - Added additional space to host column -- Darren-Perot Spruell
# - Replaced GNU date dependency with CHRIS F. A. JOHNSON's
# date2julian shell function. This routine can be found on
# page 170 of Chris's book "Shell Scripting Recipes: A
# Problem-Solution Approach," ISBN #1590594711. Julian function
# was created based on a post to comp.unix.shell by Tapani Tarvainen.
# - Cleaned up function descriptions
# - Removed several lines of redundant code
# - Adjusted the help message
#
# Version 1.1
# - Added "-c" flag to report expiration status of a PEM encoded
# certificate -- Hampus Lundqvist
# - Updated the prints messages to display the reason a connection
# failed (connection refused, connection timeout, bad cert, etc)
# - Updated the GNU date checking routines
# - Added checks for each binary required
# - Added checks for connection timeouts
# - Added checks for GNU date
# - Added a "-h" option
# - Cleaned up the documentation
#
# Version 1.0
# Initial Release
#
# Purpose:
# ssl-cert-check checks to see if a digital certificate in X.509 format
# has expired. ssl-cert-check can be run in interactive and batch mode,
# and provides facilities to alarm if a certificate is about to expire.
#
# License:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# Requirements:
# Requires openssl
#
# Installation:
# Copy the shell script to a suitable location
#
# Tested platforms:
# -- Solaris 9 using /bin/bash
# -- Solaris 10 using /bin/bash
# -- OS X 10.4.2 using /bin/bash
# -- OpenBSD using /bin/sh
# -- FreeBSD using /bin/sh
# -- Centos Linux 3, 4, 5 & 6 using /bin/bash
# -- Redhat Enterprise Linux 3, 4, 5 & 6 using /bin/bash
# -- Gentoo using /bin/bash
#
# Usage:
# Refer to the usage() sub-routine, or invoke ssl-cert-check
# with the "-h" option.
#
# Examples:
# Please refer to the following site for documentation and examples:
# http://prefetch.net/articles/checkcertificate.html
# Cleanup temp files if they exist
trap cleanup EXIT INT TERM QUIT
PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/ssl/bin:/usr/sfw/bin
export PATH
# Who to page when an expired certificate is detected (cmdline: -e)
ADMIN="root"
# Email sender address for alarm notifications
SENDER=""
# Number of days in the warning threshhold (cmdline: -x)
WARNDAYS=30
# If QUIET is set to TRUE, don't print anything on the console (cmdline: -q)
QUIET="FALSE"
# Don't send E-mail by default (cmdline: -a)
ALARM="FALSE"
# Don't run as a Nagios plugin by default (cmdline: -n)
NAGIOS="FALSE"
# Don't summarize Nagios output by default (cmdline: -N)
NAGIOSSUMMARY="FALSE"
# NULL out the PKCSDBPASSWD variable for later use (cmdline: -k)
PKCSDBPASSWD=""
# Type of certificate (PEM, DER, NET) (cmdline: -t)
CERTTYPE="pem"
# Location of system binaries
AWK=$(command -v awk)
DATE=$(command -v date)
GREP=$(command -v grep)
OPENSSL=$(command -v openssl)
PRINTF=$(command -v printf)
SED=$(command -v sed)
MKTEMP=$(command -v mktemp)
FIND=$(command -v find)
# Try to find a mail client
if [ -f /usr/bin/mailx ]; then
MAIL="/usr/bin/mailx"
MAILMODE="mailx"
elif [ -f /bin/mail ]; then
MAIL="/bin/mail"
MAILMODE="mail"
elif [ -f /usr/bin/mail ]; then
MAIL="/usr/bin/mail"
MAILMODE="mail"
elif [ -f /sbin/mail ]; then
MAIL="/sbin/mail"
MAILMODE="mail"
elif [ -f /usr/sbin/mail ]; then
MAIL="/usr/sbin/mail"
MAILMODE="mail"
elif [ -f /usr/sbin/sendmail ]; then
MAIL="/usr/sbin/sendmail"
MAILMODE="sendmail"
else
MAIL="cantfindit"
MAILMODE="cantfindit"
fi
# Return code used by nagios. Initialize to 0.
RETCODE=0
# Certificate counters and minimum difference. Initialize to 0.
SUMMARY_VALID=0
SUMMARY_WILL_EXPIRE=0
SUMMARY_EXPIRED=0
SUMMARY_MIN_DIFF=0
SUMMARY_MIN_DATE=
SUMMARY_MIN_HOST=
SUMMARY_MIN_PORT=
# Set the default umask to be somewhat restrictive
umask 077
#####################################################
# Purpose: Remove temporary files if the script doesn't
# exit() cleanly
#####################################################
cleanup() {
if [ -f "${CERT_TMP}" ]; then
rm -f "${CERT_TMP}"
fi
if [ -f "${ERROR_TMP}" ]; then
rm -f "${ERROR_TMP}"
fi
}
#####################################################
### Send email
### Accepts three parameters:
### $1 -> sender email address
### $2 -> email to send mail
### $3 -> Subject
### $4 -> Message
#####################################################
send_mail() {
FROM="${1}"
TO="${2}"
SUBJECT="${3}"
MSG="${4}"
case "${MAILMODE}" in
"mail")
echo "$MSG" | "${MAIL}" -r "$FROM" -s "$SUBJECT" "$TO"
;;
"mailx")
echo "$MSG" | "${MAIL}" -s "$SUBJECT" "$TO"
;;
"sendmail")
(echo "Subject:$SUBJECT" && echo "TO:$TO" && echo "FROM:$FROM" && echo "$MSG") | "${MAIL}" "$TO"
;;
"*")
echo "ERROR: You enabled automated alerts, but the mail binary could not be found."
echo "FIX: Please modify the \${MAIL} and \${MAILMODE} variable in the program header."
exit 1
;;
esac
}
#############################################################################
# Purpose: Convert a date from MONTH-DAY-YEAR to Julian format
# Acknowledgements: Code was adapted from examples in the book
# "Shell Scripting Recipes: A Problem-Solution Approach"
# ( ISBN 1590594711 )
# Arguments:
# $1 -> Month (e.g., 06)
# $2 -> Day (e.g., 08)
# $3 -> Year (e.g., 2006)
#############################################################################
date2julian() {
if [ "${1}" != "" ] && [ "${2}" != "" ] && [ "${3}" != "" ]; then
## Since leap years add aday at the end of February,
## calculations are done from 1 March 0000 (a fictional year)
d2j_tmpmonth=$((12 * $3 + $1 - 3))
## If it is not yet March, the year is changed to the previous year
d2j_tmpyear=$(( d2j_tmpmonth / 12))
## The number of days from 1 March 0000 is calculated
## and the number of days from 1 Jan. 4713BC is added
echo $(( (734 * d2j_tmpmonth + 15) / 24
- 2 * d2j_tmpyear + d2j_tmpyear/4
- d2j_tmpyear/100 + d2j_tmpyear/400 + $2 + 1721119 ))
else
echo 0
fi
}
#############################################################################
# Purpose: Convert a string month into an integer representation
# Arguments:
# $1 -> Month name (e.g., Sep)
#############################################################################
getmonth()
{
case ${1} in
Jan) echo 1 ;;
Feb) echo 2 ;;
Mar) echo 3 ;;
Apr) echo 4 ;;
May) echo 5 ;;
Jun) echo 6 ;;
Jul) echo 7 ;;
Aug) echo 8 ;;
Sep) echo 9 ;;
Oct) echo 10 ;;
Nov) echo 11 ;;
Dec) echo 12 ;;
*) echo 0 ;;
esac
}
#############################################################################
# Purpose: Calculate the number of seconds between two dates
# Arguments:
# $1 -> Date #1
# $2 -> Date #2
#############################################################################
date_diff()
{
if [ "${1}" != "" ] && [ "${2}" != "" ]; then
echo $((${2} - ${1}))
else
echo 0
fi
}
#####################################################################
# Purpose: Print a line with the expiraton interval
# Arguments:
# $1 -> Hostname
# $2 -> TCP Port
# $3 -> Status of certification (e.g., expired or valid)
# $4 -> Date when certificate will expire
# $5 -> Days left until the certificate will expire
# $6 -> Issuer of the certificate
# $7 -> Common Name
# $8 -> Serial Number
#####################################################################
prints()
{
if [ "${NAGIOSSUMMARY}" = "TRUE" ]; then
return
fi
if [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then
MIN_DATE=$(echo "$4" | "${AWK}" '{ printf "%3s %2d %4d", $1, $2, $4 }')
if [ "${NAGIOS}" = "TRUE" ]; then
${PRINTF} "%-35s %-17s %-8s %-11s %s\n" "$1:$2" "$6" "$3" "$MIN_DATE" "|days=$5"
else
${PRINTF} "%-35s %-17s %-8s %-11s %4d\n" "$1:$2" "$6" "$3" "$MIN_DATE" "$5"
fi
elif [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then
${PRINTF} "%-35s %-35s %-32s %-17s\n" "$1:$2" "$7" "$8" "$6"
elif [ "${QUIET}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then
MIN_DATE=$(echo "$4" | "${AWK}" '{ printf "%3s %2d, %4d", $1, $2, $4 }')
if [ "${NAGIOS}" = "TRUE" ]; then
${PRINTF} "%-47s %-12s %-12s %s\n" "$1:$2" "$3" "$MIN_DATE" "|days=$5"
else
${PRINTF} "%-47s %-12s %-12s %4d\n" "$1:$2" "$3" "$MIN_DATE" "$5"
fi
elif [ "${QUIET}" != "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then
${PRINTF} "%-35s %-35s %-32s\n" "$1:$2" "$7" "$8"
fi
}
####################################################
# Purpose: Print a heading with the relevant columns
# Arguments:
# None
####################################################
print_heading()
{
if [ "${NOHEADER}" != "TRUE" ]; then
if [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then
${PRINTF} "\n%-35s %-17s %-8s %-11s %-4s\n" "Host" "Issuer" "Status" "Expires" "Days"
echo "----------------------------------- ----------------- -------- ----------- ----"
elif [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then
${PRINTF} "\n%-35s %-35s %-32s %-17s\n" "Host" "Common Name" "Serial #" "Issuer"
echo "----------------------------------- ----------------------------------- -------------------------------- -----------------"
elif [ "${QUIET}" != "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then
${PRINTF} "\n%-47s %-12s %-12s %-4s\n" "Host" "Status" "Expires" "Days"
echo "----------------------------------------------- ------------ ------------ ----"
elif [ "${QUIET}" != "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then
${PRINTF} "\n%-35s %-35s %-32s\n" "Host" "Common Name" "Serial #"
echo "----------------------------------- ----------------------------------- --------------------------------"
fi
fi
}
####################################################
# Purpose: Print a summary for nagios
# Arguments:
# None
####################################################
print_summary()
{
if [ "${NAGIOSSUMMARY}" != "TRUE" ]; then
return
fi
if [ ${SUMMARY_WILL_EXPIRE} -eq 0 ] && [ ${SUMMARY_EXPIRED} -eq 0 ]; then
${PRINTF} "%s valid certificate(s)|days=%s\n" "${SUMMARY_VALID}" "${SUMMARY_MIN_DIFF}"
elif [ ${SUMMARY_EXPIRED} -ne 0 ]; then
${PRINTF} "%s certificate(s) expired (%s:%s on %s)|days=%s\n" "${SUMMARY_EXPIRED}" "${SUMMARY_MIN_HOST}" "${SUMMARY_MIN_PORT}" "${SUMMARY_MIN_DATE}" "${SUMMARY_MIN_DIFF}"
elif [ ${SUMMARY_WILL_EXPIRE} -ne 0 ]; then
${PRINTF} "%s certificate(s) will expire (%s:%s on %s)|days=%s\n" "${SUMMARY_WILL_EXPIRE}" "${SUMMARY_MIN_HOST}" "${SUMMARY_MIN_PORT}" "${SUMMARY_MIN_DATE}" "${SUMMARY_MIN_DIFF}"
fi
}
#############################################################
# Purpose: Set returncode to value if current value is lower
# Arguments:
# $1 -> New returncorde
#############################################################
set_returncode()
{
if [ "${RETCODE}" -lt "${1}" ]; then
RETCODE="${1}"
fi
}
########################################################################
# Purpose: Set certificate counters and informations for nagios summary
# Arguments:
# $1 -> Status of certificate (0: valid, 1: will expire, 2: expired)
# $2 -> Hostname
# $3 -> TCP Port
# $4 -> Date when certificate will expire
# $5 -> Days left until the certificate will expire
########################################################################
set_summary()
{
if [ "${1}" -eq 0 ]; then
SUMMARY_VALID=$((SUMMARY_VALID+1))
elif [ "${1}" -eq 1 ]; then
SUMMARY_WILL_EXPIRE=$((SUMMARY_WILL_EXPIRE+1))
else
SUMMARY_EXPIRED=$((SUMMARY_EXPIRED+1))
fi
if [ "${5}" -lt "${SUMMARY_MIN_DIFF}" ] || [ "${SUMMARY_MIN_DIFF}" -eq 0 ]; then
SUMMARY_MIN_DATE="${4}"
SUMMARY_MIN_DIFF="${5}"
SUMMARY_MIN_HOST="${2}"
SUMMARY_MIN_PORT="${3}"
fi
}
##########################################
# Purpose: Describe how the script works
# Arguments:
# None
##########################################
usage()
{
echo "Usage: $0 [ -e email address ] [-E sender email address] [ -x days ] [-q] [-a] [-b] [-h] [-i] [-n] [-N] [-v]"
echo " { [ -s common_name ] && [ -p port] } || { [ -f cert_file ] } || { [ -c cert file ] } || { [ -d cert dir ] }"
echo ""
echo " -a : Send a warning message through E-mail"
echo " -b : Will not print header"
echo " -c cert file : Print the expiration date for the PEM or PKCS12 formatted certificate in cert file"
echo " -d cert directory : Print the expiration date for the PEM or PKCS12 formatted certificates in cert directory"
echo " -e E-mail address : E-mail address to send expiration notices"
echo " -E E-mail sender : E-mail address of the sender"
echo " -f cert file : File with a list of FQDNs and ports"
echo " -h : Print this screen"
echo " -i : Print the issuer of the certificate"
echo " -k password : PKCS12 file password"
echo " -n : Run as a Nagios plugin"
echo " -N : Run as a Nagios plugin and output one line summary (implies -n, requires -f or -d)"
echo " -p port : Port to connect to (interactive mode)"
echo " -q : Don't print anything on the console"
echo " -s commmon name : Server to connect to (interactive mode)"
echo " -S : Print validation information"
echo " -t type : Specify the certificate type"
echo " -V : Print version information"
echo " -x days : Certificate expiration interval (eg. if cert_date < days)"
echo ""
}
##########################################################################
# Purpose: Connect to a server ($1) and port ($2) to see if a certificate
# has expired
# Arguments:
# $1 -> Server name
# $2 -> TCP port to connect to
##########################################################################
check_server_status() {
PORT="$2"
case "$PORT" in
smtp|25|submission|587) TLSFLAG="-starttls smtp";;
pop3|110) TLSFLAG="-starttls pop3";;
imap|143) TLSFLAG="-starttls imap";;
ftp|21) TLSFLAG="-starttls ftp";;
xmpp|5222) TLSFLAG="-starttls xmpp";;
xmpp-server|5269) TLSFLAG="-starttls xmpp-server";;
irc|194) TLSFLAG="-starttls irc";;
postgres|5432) TLSFLAG="-starttls postgres";;
mysql|3306) TLSFLAG="-starttls mysql";;
lmtp|24) TLSFLAG="-starttls lmtp";;
nntp|119) TLSFLAG="-starttls nntp";;
sieve|4190) TLSFLAG="-starttls sieve";;
ldap|389) TLSFLAG="-starttls ldap";;
*) TLSFLAG="";;
esac
if [ "${TLSSERVERNAME}" = "FALSE" ]; then
OPTIONS="-connect ${1}:${2} $TLSFLAG"
else
OPTIONS="-connect ${1}:${2} -servername ${1} $TLSFLAG"
fi
echo "" | "${OPENSSL}" s_client $OPTIONS 2> "${ERROR_TMP}" 1> "${CERT_TMP}"
if "${GREP}" -i "Connection refused" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "Connection refused" "Unknown"
set_returncode 3
elif "${GREP}" -i "No route to host" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "No route to host" "Unknown"
set_returncode 3
elif "${GREP}" -i "gethostbyname failure" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "Cannot resolve domain" "Unknown"
set_returncode 3
elif "${GREP}" -i "Operation timed out" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "Operation timed out" "Unknown"
set_returncode 3
elif "${GREP}" -i "ssl handshake failure" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "SSL handshake failed" "Unknown"
set_returncode 3
elif "${GREP}" -i "connect: Connection timed out" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "Connection timed out" "Unknown"
set_returncode 3
elif "${GREP}" -i "Name or service not known" "${ERROR_TMP}" > /dev/null; then
prints "${1}" "${2}" "Unable to resolve the DNS name ${1}" "Unknown"
set_returncode 3
else
check_file_status "${CERT_TMP}" "${1}" "${2}"
fi
}
#####################################################
### Check the expiration status of a certificate file
### Accepts three parameters:
### $1 -> certificate file to process
### $2 -> Server name
### $3 -> Port number of certificate
#####################################################
check_file_status() {
CERTFILE="${1}"
HOST="${2}"
PORT="${3}"
### Check to make sure the certificate file exists
if [ ! -r "${CERTFILE}" ] || [ ! -s "${CERTFILE}" ]; then
echo "ERROR: The file named ${CERTFILE} is unreadable or doesn't exist"
echo "ERROR: Please check to make sure the certificate for ${HOST}:${PORT} is valid"
set_returncode 3
return
fi
### Grab the expiration date from the X.509 certificate
if [ "${PKCSDBPASSWD}" != "" ]; then
# Extract the certificate from the PKCS#12 database, and
# send the informational message to /dev/null
"${OPENSSL}" pkcs12 -nokeys -in "${CERTFILE}" \
-out "${CERT_TMP}" -clcerts -password pass:"${PKCSDBPASSWD}" 2> /dev/null
# Extract the expiration date from the certificate
CERTDATE=$("${OPENSSL}" x509 -in "${CERT_TMP}" -enddate -noout | \
"${SED}" 's/notAfter\=//')
# Extract the issuer from the certificate
CERTISSUER=$("${OPENSSL}" x509 -in "${CERT_TMP}" -issuer -noout | \
"${AWK}" 'BEGIN {RS=", " } $0 ~ /^O =/
{ print substr($0,5,17)}')
### Grab the common name (CN) from the X.509 certificate
COMMONNAME=$("${OPENSSL}" x509 -in "${CERT_TMP}" -subject -noout | \
"${SED}" -e 's/.*CN = //' | \
"${SED}" -e 's/, .*//')
### Grab the serial number from the X.509 certificate
SERIAL=$("${OPENSSL}" x509 -in "${CERT_TMP}" -serial -noout | \
"${SED}" -e 's/serial=//')
else
# Extract the expiration date from the ceriticate
CERTDATE=$("${OPENSSL}" x509 -in "${CERTFILE}" -enddate -noout -inform "${CERTTYPE}" | \
"${SED}" 's/notAfter\=//')
# Extract the issuer from the certificate
CERTISSUER=$("${OPENSSL}" x509 -in "${CERTFILE}" -issuer -noout -inform "${CERTTYPE}" | \
"${AWK}" 'BEGIN {RS=", " } $0 ~ /^O =/ { print substr($0,5,17)}')
### Grab the common name (CN) from the X.509 certificate
COMMONNAME=$("${OPENSSL}" x509 -in "${CERTFILE}" -subject -noout -inform "${CERTTYPE}" | \
"${SED}" -e 's/.*CN = //' | \
"${SED}" -e 's/, .*//')
### Grab the serial number from the X.509 certificate
SERIAL=$("${OPENSSL}" x509 -in "${CERTFILE}" -serial -noout -inform "${CERTTYPE}" | \
"${SED}" -e 's/serial=//')
fi
### Split the result into parameters, and pass the relevant pieces to date2julian
set -- ${CERTDATE}
MONTH=$(getmonth "${1}")
# Convert the date to seconds, and get the diff between NOW and the expiration date
CERTJULIAN=$(date2julian "${MONTH#0}" "${2#0}" "${4}")
CERTDIFF=$(date_diff "${NOWJULIAN}" "${CERTJULIAN}")
if [ "${CERTDIFF}" -lt 0 ]; then
if [ "${ALARM}" = "TRUE" ]; then
send_mail "${SENDER}" "${ADMIN}" "Certificate for ${HOST} \"(CN: ${COMMONNAME})\" has expired!" \
"The SSL certificate for ${HOST} \"(CN: ${COMMONNAME})\" has expired!"
fi
prints "${HOST}" "${PORT}" "Expired" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}"
RETCODE_LOCAL=2
elif [ "${CERTDIFF}" -lt "${WARNDAYS}" ]; then
if [ "${ALARM}" = "TRUE" ]; then
send_mail "${SENDER}" "${ADMIN}" "Certificate for ${HOST} \"(CN: ${COMMONNAME})\" will expire in ${CERTDIFF} days or less" \
"The SSL certificate for ${HOST} \"(CN: ${COMMONNAME})\" will expire on ${CERTDATE}"
fi
prints "${HOST}" "${PORT}" "Expiring" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}"
RETCODE_LOCAL=1
else
prints "${HOST}" "${PORT}" "Valid" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}"
RETCODE_LOCAL=0
fi
set_returncode "${RETCODE_LOCAL}"
MIN_DATE=$(echo "${CERTDATE}" | "${AWK}" '{ print $1, $2, $4 }')
set_summary "${RETCODE_LOCAL}" "${HOST}" "${PORT}" "${MIN_DATE}" "${CERTDIFF}"
}
#################################
### Start of main program
#################################
while getopts abc:d:e:E:f:hik:nNp:qs:St:Vx: option
do
case "${option}" in
a) ALARM="TRUE";;
b) NOHEADER="TRUE";;
c) CERTFILE=${OPTARG};;
d) CERTDIRECTORY=${OPTARG};;
e) ADMIN=${OPTARG};;
E) SENDER=${OPTARG};;
f) SERVERFILE=$OPTARG;;
h) usage
exit 1;;
i) ISSUER="TRUE";;
k) PKCSDBPASSWD=${OPTARG};;
n) NAGIOS="TRUE";;
N) NAGIOS="TRUE"
NAGIOSSUMMARY="TRUE";;
p) PORT=$OPTARG;;
q) QUIET="TRUE";;
s) HOST=$OPTARG;;
S) VALIDATION="TRUE";;
t) CERTTYPE=$OPTARG;;
V) echo "${PROGRAMVERSION}"
exit 0
;;
x) WARNDAYS=$OPTARG;;
\?) usage
exit 1;;
esac
done
### Check to make sure a openssl utility is available
if [ ! -f "${OPENSSL}" ]; then
echo "ERROR: The openssl binary does not exist in ${OPENSSL}."
echo "FIX: Please modify the \${OPENSSL} variable in the program header."
exit 1
fi
### Check to make sure a date utility is available
if [ ! -f "${DATE}" ]; then
echo "ERROR: The date binary does not exist in ${DATE} ."
echo "FIX: Please modify the \${DATE} variable in the program header."
exit 1
fi
### Check to make sure a grep and find utility is available
if [ ! -f "${GREP}" ] || [ ! -f "${FIND}" ]; then
echo "ERROR: Unable to locate the grep and find binary."
echo "FIX: Please modify the \${GREP} and \${FIND} variables in the program header."
exit 1
fi
### Check to make sure the mktemp and printf utilities are available
if [ ! -f "${MKTEMP}" ] || [ -z "${PRINTF}" ]; then
echo "ERROR: Unable to locate the mktemp or printf binary."
echo "FIX: Please modify the \${MKTEMP} and \${PRINTF} variables in the program header."
exit 1
fi
### Check to make sure the sed and awk binaries are available
if [ ! -f "${SED}" ] || [ ! -f "${AWK}" ]; then
echo "ERROR: Unable to locate the sed or awk binary."
echo "FIX: Please modify the \${SED} and \${AWK} variables in the program header."
exit 1
fi
### Check to make sure a mail client is available it automated notifications are requested
if [ "${ALARM}" = "TRUE" ] && [ ! -f "${MAIL}" ]; then
echo "ERROR: You enabled automated alerts, but the mail binary could not be found."
echo "FIX: Please modify the ${MAIL} variable in the program header."
exit 1
fi
# Send along the servername when TLS is used
if ${OPENSSL} s_client -help 2>&1 | grep '-servername' > /dev/null; then
TLSSERVERNAME="TRUE"
else
TLSSERVERNAME="FALSE"
fi
# Place to stash temporary files
CERT_TMP=$($MKTEMP /var/tmp/cert.XXXXXX)
ERROR_TMP=$($MKTEMP /var/tmp/error.XXXXXX)
### Baseline the dates so we have something to compare to
MONTH=$(${DATE} "+%m")
DAY=$(${DATE} "+%d")
YEAR=$(${DATE} "+%Y")
NOWJULIAN=$(date2julian "${MONTH#0}" "${DAY#0}" "${YEAR}")
### Touch the files prior to using them
if [ -n "${CERT_TMP}" ] && [ -n "${ERROR_TMP}" ]; then
touch "${CERT_TMP}" "${ERROR_TMP}"
else
echo "ERROR: Problem creating temporary files"
echo "FIX: Check that mktemp works on your system"
exit 1
fi
### If a HOST was passed on the cmdline, use that value
if [ "${HOST}" != "" ]; then
print_heading
check_server_status "${HOST}" "${PORT:=443}"
print_summary
### If a file is passed to the "-f" option on the command line, check
### each certificate or server / port combination in the file to see if
### they are about to expire
elif [ -f "${SERVERFILE}" ]; then
print_heading
IFS=$'\n'
for LINE in $(grep -E -v '(^#|^$)' "${SERVERFILE}")
do
HOST=${LINE%% *}
PORT=${LINE##* }
IFS=" "
if [ "$PORT" = "FILE" ]; then
check_file_status "${HOST}" "FILE" "${HOST}"
else
check_server_status "${HOST}" "${PORT}"
fi
done
IFS="${OLDIFS}"
print_summary
### Check to see if the certificate in CERTFILE is about to expire
elif [ "${CERTFILE}" != "" ]; then
print_heading
check_file_status "${CERTFILE}" "FILE" "${CERTFILE}"
print_summary
### Check to see if the certificates in CERTDIRECTORY are about to expire
elif [ "${CERTDIRECTORY}" != "" ] && ("${FIND}" -L "${CERTDIRECTORY}" -type f > /dev/null 2>&1); then
print_heading
for FILE in $("${FIND}" -L "${CERTDIRECTORY}" -type f); do
check_file_status "${FILE}" "FILE" "${FILE}"
done
print_summary
### There was an error, so print a detailed usage message and exit
else
usage
exit 1
fi
### Exit with a success indicator
if [ "${NAGIOS}" = "TRUE" ]; then
exit "${RETCODE}"
else
exit 0
fi
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