765 lines
25 KiB
Bash
Executable File
765 lines
25 KiB
Bash
Executable File
#!/bin/bash
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#
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# Program: SSL Certificate Check <ssl-cert-check>
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#
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# Source code home: http://prefetch.net/code/ssl-cert-check
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#
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# Documentation: http://prefetch.net/articles/checkcertificate.html
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#
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# Author: Matty < matty91 at gmail dot com >
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#
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# Current Version: 3.27
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#
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# Revision History:
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#
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# Version 3.27
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# - Allow white spaces to exist in the certificate file list
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# - Add an additional check to pick up bad / non-existent certificates
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# - Add a check to look for the existence of a mail program. Error out if it's not present.
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# - Enable the TLS -servername extension by default - Juergen Knaack & Johan Denoyer
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#
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# Version 3.26
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# - Allow the certificate type (PEM, DER, NET) to be passed on the command line
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#
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# Version 3.25
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# - Check for "no route to host" errors -- Dan Doyle
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# - Set RETCODE to 3 (unknown) if a connection error occurs -- Dan Doyle
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# - Documentation fixes
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#
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# Version 3.24
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# - Utilize the -clcerts option to limit the results to client certificates - Eitan Katznelson
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#
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# Version 3.23
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# - Fixed typo in date2julian routine -- Ken Cook
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#
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# Version 3.22
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# - Change the validation option to "-V"
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# - Add a "-v" option to specify a specific protocol version (ssl2, ssl3 or tls)
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#
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# Version 3.21
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# - Adjust e-mail checking to avoid exiting if notifications aren't enabled -- Nick Anderson
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# - Added the number of days until expiration to the Nagios output -- Nick Anderson
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#
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# Version 3.20
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# - Fixed a bug in certificate length checking -- Tim Nowaczyk
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#
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# Version 3.19
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# - Added check to verify the certificate retrieved is valid
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#
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# Version 3.18
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# - Add support for connecting to FTP servers -- Paul A Sand
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#
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# Version 3.17
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# - Add support for connecting to imap servers -- Joerg Pareigis
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#
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# Version 3.16
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# - Add support for connecting to the mail sbmission port -- Luis E. Munoz
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#
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# Version 3.15
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# - Adjusted the file checking logic to use the correct certificate -- Maciej Szudejko
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# - Add sbin to the default search paths for OpenBSD compatibility -- Alex Popov
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# - Use cut instead of substring processing to ensure compatibility -- Alex Popov
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#
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# Version 3.14
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# - Fixed the Common Name parser to handle DN's where the CN is not the last item
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# eg. EmailAddr -- Jason Brothers
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# - Added the ability to grab the serial number -- Jason Brothers
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# - Added the "-b" option to print results without a header -- Jason Brothers
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# - Added the "-v" option for certificate validation -- Jason Brothers
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#
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# Version 3.13
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# - Updated the subject line to include the hostname as well as
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# the common name embedded in the X509 certificate (if it's
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# available) -- idea proposed by Mike Burns
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#
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# Version 3.12
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# - Updated the license to allow redistribution and modification
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#
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# Version 3.11
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# - Added ability to comment out lines in files passed
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# to the "-f" option -- Brett Stauner
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# - Fixed comment next to file processing logic
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#
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# Version 3.10
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# - Fixed POP3 port -- Simon Matter
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#
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# Version 3.9
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# - Switched binary location logic to use which utility
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#
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# Version 3.8
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# - Fixed display on 80 column displays
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# - Cleaned up the formatting
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#
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# Version 3.7
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# - Fixed bug in NAGIOS tests -- Ben Allen
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#
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# Version 3.6
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# - Added support for certificates stored in PKCS#12 databases -- Ken Gallo
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# - Cleaned up comments
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# - Adjusted variables to be more consistent
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#
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# Version 3.5
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# - Added support for NAGIOS -- Quanah Gibson-Mount
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# - Added additional checks for mail -- Quanah Gibson-Mount
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# - Convert tabs to spaces -- Quanah Gibson-Mount
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# - Cleaned up usage() routine
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# - Added additional checks for openssl
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#
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# Version 3.4
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# - Added a missing "{" to line 364 -- Ken Gallo
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# - Move mktemp to the start of the main body to avoid errors
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# - Adjusted default binary paths to make sure the script just works
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# w/ Solaris, BSD and Linux hosts
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#
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# Version 3.3
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# - Added common name from X.509 certificate file to E-mail body / header -- Doug Curtis
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# - Fixed several documentation errors
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# - Use mktemp to create temporary files
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# - Convert printf, sed and awk to variables
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# - Check for printf, sed, awk and mktemp binaries
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# - Add additional logic to make sure mktemp returned a valid temporary file
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#
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# Version 3.2
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# - Added option to list certificates in the file passed to "-f".
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#
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# Version 3.1
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# - Added handling for starttls for smtp -- Marco Amrein
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# - Added handling for starttls for pop3 (without s) -- Marco Amrein
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# - Removed extra spacing at end of script
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#
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# Version 3.0
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# - Added "-i" option to print certificate issuer
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# - Removed $0 from Subject line of outbound e-mails
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# - Fixed some typographical errors
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# - Removed redundant "-b" option
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#
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# Version 2.0
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# - Fixed an issue with e-mails formatting incorrectly
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# - Added additional space to host column -- Darren-Perot Spruell
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# - Replaced GNU date dependency with CHRIS F. A. JOHNSON's
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# date2julian shell function. This routine can be found on
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# page 170 of Chris's book "Shell Scripting Recipes: A
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# Problem-Solution Approach," ISBN #1590594711. Julian function
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# was created based on a post to comp.unix.shell by Tapani Tarvainen.
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# - Cleaned up function descriptions
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# - Removed several lines of redundant code
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# - Adjusted the help message
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#
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# Version 1.1
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# - Added "-c" flag to report expiration status of a PEM encoded
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# certificate -- Hampus Lundqvist
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# - Updated the prints messages to display the reason a connection
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# failed (connection refused, connection timeout, bad cert, etc)
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# - Updated the GNU date checking routines
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# - Added checks for each binary required
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# - Added checks for connection timeouts
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# - Added checks for GNU date
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# - Added a "-h" option
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# - Cleaned up the documentation
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#
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# Version 1.0
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# Initial Release
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#
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# Last Updated: 02-27-2013
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#
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# Purpose:
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# ssl-cert-check checks to see if a digital certificate in X.509 format
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# has expired. ssl-cert-check can be run in interactive and batch mode,
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# and provides facilities to alarm if a certificate is about to expire.
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#
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# License:
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# Requirements:
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# Requires openssl
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#
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# Installation:
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# Copy the shell script to a suitable location
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#
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# Tested platforms:
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# -- Solaris 9 using /bin/bash
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# -- Solaris 10 using /bin/bash
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# -- OS X 10.4.2 using /bin/bash
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# -- OpenBSD using /bin/sh
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# -- FreeBSD using /bin/sh
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# -- Centos Linux 3, 4, 5 & 6 using /bin/bash
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# -- Redhat Enterprise Linux 3, 4, 5 & 6 using /bin/bash
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#
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# Usage:
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# Refer to the usage() sub-routine, or invoke ssl-cert-check
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# with the "-h" option.
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#
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# Examples:
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# Please refer to the following site for documentation and examples:
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# http://prefetch.net/articles/checkcertificate.html
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PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/ssl/bin:/usr/sfw/bin
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export PATH
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# Who to page when an expired certificate is detected (cmdline: -e)
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ADMIN="joerg@higgsboson.tk"
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# Number of days in the warning threshhold (cmdline: -x)
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WARNDAYS=30
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# If QUIET is set to TRUE, don't print anything on the console (cmdline: -q)
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QUIET="FALSE"
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# Don't send E-mail by default (cmdline: -a)
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ALARM="FALSE"
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# Don't run as a Nagios plugin by default (cmdline: -n)
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NAGIOS="FALSE"
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# NULL out the PKCSDBPASSWD variable for later use (cmdline: -k)
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PKCSDBPASSWD=""
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# Type of certificate (PEM, DER, NET) (cmdline: -t)
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CERTTYPE="pem"
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# Protocol version to use (cmdline: -v)
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VERSION=""
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# Send along the servername when TLS is used
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TLSSERVERNAME="TRUE"
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# Location of system binaries
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AWK=$(which awk)
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DATE=$(which date)
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GREP=$(which grep)
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OPENSSL=$(which openssl)
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PRINTF=$(which printf)
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SED=$(which sed)
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MKTEMP=$(which mktemp)
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# Try to find a mail client
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if [ -f /usr/bin/mailx ]
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then
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MAIL="/usr/bin/mailx"
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elif [ -f /bin/mail ]
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then
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MAIL="/bin/mail"
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elif [ -f /usr/bin/mail ]
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then
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MAIL="/usr/bin/mail"
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elif [ -f /sbin/mail ]
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then
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MAIL="/sbin/mail"
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elif [ -f /usr/sbin/mail ]
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then
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MAIL="/usr/sbin/mail"
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else
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MAIL="cantfindit"
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fi
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# Return code used by nagios. Initialize to 0.
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RETCODE=0
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# Set the default umask to be somewhat restrictive
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umask 077
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#############################################################################
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# Purpose: Convert a date from MONTH-DAY-YEAR to Julian format
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# Acknowledgements: Code was adapted from examples in the book
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# "Shell Scripting Recipes: A Problem-Solution Approach"
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# ( ISBN 1590594711 )
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# Arguments:
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# $1 -> Month (e.g., 06)
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# $2 -> Day (e.g., 08)
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# $3 -> Year (e.g., 2006)
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#############################################################################
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date2julian() {
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if [ "${1}" != "" ] && [ "${2}" != "" ] && [ "${3}" != "" ]
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then
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## Since leap years add aday at the end of February,
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## calculations are done from 1 March 0000 (a fictional year)
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d2j_tmpmonth=$((12 * ${3} + ${1} - 3))
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## If it is not yet March, the year is changed to the previous year
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d2j_tmpyear=$(( ${d2j_tmpmonth} / 12))
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## The number of days from 1 March 0000 is calculated
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## and the number of days from 1 Jan. 4713BC is added
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echo $(( (734 * ${d2j_tmpmonth} + 15) / 24
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- 2 * ${d2j_tmpyear} + ${d2j_tmpyear}/4
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- ${d2j_tmpyear}/100 + ${d2j_tmpyear}/400 + $2 + 1721119 ))
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else
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echo 0
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fi
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}
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#############################################################################
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# Purpose: Convert a string month into an integer representation
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# Arguments:
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# $1 -> Month name (e.g., Sep)
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#############################################################################
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getmonth()
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{
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case ${1} in
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Jan) echo 1 ;;
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Feb) echo 2 ;;
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Mar) echo 3 ;;
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Apr) echo 4 ;;
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May) echo 5 ;;
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Jun) echo 6 ;;
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Jul) echo 7 ;;
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Aug) echo 8 ;;
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Sep) echo 9 ;;
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Oct) echo 10 ;;
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Nov) echo 11 ;;
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Dec) echo 12 ;;
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*) echo 0 ;;
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esac
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}
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#############################################################################
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# Purpose: Calculate the number of seconds between two dates
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# Arguments:
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# $1 -> Date #1
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# $2 -> Date #2
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#############################################################################
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date_diff()
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{
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if [ "${1}" != "" ] && [ "${2}" != "" ]
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then
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echo $((${2} - ${1}))
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else
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echo 0
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fi
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}
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#####################################################################
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# Purpose: Print a line with the expiraton interval
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# Arguments:
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# $1 -> Hostname
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# $2 -> TCP Port
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# $3 -> Status of certification (e.g., expired or valid)
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# $4 -> Date when certificate will expire
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# $5 -> Days left until the certificate will expire
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# $6 -> Issuer of the certificate
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#####################################################################
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prints()
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{
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if [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]
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then
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MIN_DATE=$(echo $4 | ${AWK} '{ print $1, $2, $4 }')
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if [ "${NAGIOS}" == "TRUE" ]
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then
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${PRINTF} "%-35s %-17s %-8s %-11s %-4s %-30s\n" "$1:$2" "$6" "$3" "$MIN_DATE" \|days="$5"
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else
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${PRINTF} "%-35s %-17s %-8s %-11s %-4s %-30s\n" "$1:$2" "$6" "$3" "$MIN_DATE" "$5"
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fi
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elif [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${VALIDATION}" == "TRUE" ]
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then
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${PRINTF} "%-35s %-35s %-32s %-17s\n" "$1:$2" "$7" "$8" "$6"
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elif [ "${QUIET}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]
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then
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MIN_DATE=$(echo $4 | ${AWK} '{ print $1, $2, $4 }')
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if [ "${NAGIOS}" == "TRUE" ]
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then
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${PRINTF} "%-47s %-12s %-12s %-4s %-30s\n" "$1:$2" "$3" "$MIN_DATE" \|days="$5"
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else
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${PRINTF} "%-47s %-12s %-12s %-4s %-30s\n" "$1:$2" "$3" "$MIN_DATE" "$5"
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fi
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elif [ "${QUIET}" != "TRUE" ] && [ "${VALIDATION}" == "TRUE" ]
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then
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${PRINTF} "%-35s %-35s %-32s\n" "$1:$2" "$7" "$8"
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fi
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}
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####################################################
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# Purpose: Print a heading with the relevant columns
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# Arguments:
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# None
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####################################################
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print_heading()
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{
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if [ "${NOHEADER}" != "TRUE" ]
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then
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if [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]
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then
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${PRINTF} "\n%-35s %-17s %-8s %-11s %-4s\n" "Host" "Issuer" "Status" "Expires" "Days"
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echo "----------------------------------- ----------------- -------- ----------- ----"
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elif [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" == "TRUE" ]
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then
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${PRINTF} "\n%-35s %-35s %-32s %-17s\n" "Host" "Common Name" "Serial #" "Issuer"
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echo "----------------------------------- ----------------------------------- -------------------------------- -----------------"
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elif [ "${QUIET}" != "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]
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then
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${PRINTF} "\n%-47s %-12s %-12s %-4s\n" "Host" "Status" "Expires" "Days"
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echo "----------------------------------------------- ------------ ------------ ----"
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elif [ "${QUIET}" != "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" == "TRUE" ]
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then
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${PRINTF} "\n%-35s %-35s %-32s\n" "Host" "Common Name" "Serial #"
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echo "----------------------------------- ----------------------------------- --------------------------------"
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fi
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fi
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}
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##########################################
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# Purpose: Describe how the script works
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# Arguments:
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# None
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##########################################
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usage()
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{
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echo "Usage: $0 [ -e email address ] [ -x days ] [-q] [-a] [-b] [-h] [-i] [-n] [-v]"
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echo " { [ -s common_name ] && [ -p port] } || { [ -f cert_file ] } || { [ -c certificate file ] }"
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echo ""
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echo " -a : Send a warning message through E-mail"
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echo " -b : Will not print header"
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echo " -c cert file : Print the expiration date for the PEM or PKCS12 formatted certificate in cert file"
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echo " -e E-mail address : E-mail address to send expiration notices"
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echo " -f cert file : File with a list of FQDNs and ports"
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echo " -h : Print this screen"
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echo " -i : Print the issuer of the certificate"
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echo " -k password : PKCS12 file password"
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echo " -n : Run as a Nagios plugin"
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echo " -p port : Port to connect to (interactive mode)"
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echo " -s commmon name : Server to connect to (interactive mode)"
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echo " -t type : Specify the certificate type"
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echo " -q : Don't print anything on the console"
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echo " -v : Specify a specific protocol version to use (tls, ssl2, ssl3)"
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echo " -V : Only print validation data"
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echo " -x days : Certificate expiration interval (eg. if cert_date < days)"
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echo ""
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}
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##########################################################################
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# Purpose: Connect to a server ($1) and port ($2) to see if a certificate
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# has expired
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# Arguments:
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# $1 -> Server name
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# $2 -> TCP port to connect to
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##########################################################################
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check_server_status() {
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if [ "_${2}" = "_smtp" -o "_${2}" = "_25" ]
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then
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TLSFLAG="-starttls smtp"
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elif [ "_${2}" = "_ftp" -o "_${2}" = "_21" ]
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then
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TLSFLAG="-starttls ftp"
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elif [ "_${2}" = "_pop3" -o "_${2}" = "_110" ]
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then
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TLSFLAG="-starttls pop3"
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elif [ "_${2}" = "_imap" -o "_${2}" = "_143" ]
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then
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TLSFLAG="-starttls imap"
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elif [ "_${2}" = "_submission" -o "_${2}" = "_587" ]
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then
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TLSFLAG="-starttls smtp -port ${2}"
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elif [ "_${2}" = "_xmpp-client" -o "_${2}" = "_xmpp-server" -o \
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"_${2}" = "_5269" -o "_${2}" = "_5222" ]
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then
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TLSFLAG="-starttls xmpp"
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else
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TLSFLAG=""
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fi
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if [ "${VERSION}" != "" ]
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then
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VER="-${VERSION}"
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fi
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if [ "${TLSSERVERNAME}" = "TRUE" ]
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then
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TLSFLAG="${TLSFLAG} -servername $1"
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fi
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echo "" | ${OPENSSL} s_client ${VER} -connect ${1}:${2} ${TLSFLAG} 2> ${ERROR_TMP} 1> ${CERT_TMP}
|
|
|
|
if ${GREP} -i "Connection refused" ${ERROR_TMP} > /dev/null
|
|
then
|
|
prints ${1} ${2} "Connection refused" "Unknown"
|
|
RETCODE=3
|
|
|
|
elif ${GREP} -i "No route to host" ${ERROR_TMP} > /dev/null
|
|
then
|
|
prints ${1} ${2} "No route to host" "Unknown"
|
|
RETCODE=3
|
|
|
|
elif ${GREP} -i "gethostbyname failure" ${ERROR_TMP} > /dev/null
|
|
then
|
|
prints ${1} ${2} "Cannot resolve domain" "Unknown"
|
|
RETCODE=3
|
|
|
|
elif ${GREP} -i "Operation timed out" ${ERROR_TMP} > /dev/null
|
|
then
|
|
prints ${1} ${2} "Operation timed out" "Unknown"
|
|
RETCODE=3
|
|
|
|
elif ${GREP} -i "ssl handshake failure" ${ERROR_TMP} > /dev/null
|
|
then
|
|
prints ${1} ${2} "SSL handshake failed" "Unknown"
|
|
RETCODE=3
|
|
|
|
elif ${GREP} -i "connect: Connection timed out" ${ERROR_TMP} > /dev/null
|
|
then
|
|
prints ${1} ${2} "Connection timed out" "Unknown"
|
|
RETCODE=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"
|
|
RETCODE=1
|
|
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($0,3,17)}')
|
|
|
|
### Grab the common name (CN) from the X.509 certificate
|
|
COMMONNAME=$(${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($0,3,17)}')
|
|
|
|
### Grab the common name (CN) from the X.509 certificate
|
|
COMMONNAME=$(${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
|
|
echo "The SSL certificate for ${HOST} \"(CN: ${COMMONNAME})\" has expired!" \
|
|
| ${MAIL} -s "Certificate for ${HOST} \"(CN: ${COMMONNAME})\" has expired!" ${ADMIN}
|
|
fi
|
|
|
|
prints ${HOST} ${PORT} "Expired" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}"
|
|
RETCODE=2
|
|
|
|
elif [ ${CERTDIFF} -lt ${WARNDAYS} ]
|
|
then
|
|
if [ "${ALARM}" = "TRUE" ]
|
|
then
|
|
echo "The SSL certificate for ${HOST} \"(CN: ${COMMONNAME})\" will expire on ${CERTDATE}" \
|
|
| ${MAIL} -s "Certificate for ${HOST} \"(CN: ${COMMONNAME})\" will expire in ${WARNDAYS}-days or less" ${ADMIN}
|
|
fi
|
|
prints ${HOST} ${PORT} "Expiring" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}"
|
|
RETCODE=1
|
|
|
|
else
|
|
prints ${HOST} ${PORT} "Valid" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}"
|
|
RETCODE=0
|
|
fi
|
|
}
|
|
|
|
#################################
|
|
### Start of main program
|
|
#################################
|
|
while getopts abinv:e:f:c:hk:p:s:t:qx:V option
|
|
do
|
|
case "${option}"
|
|
in
|
|
a) ALARM="TRUE";;
|
|
b) NOHEADER="TRUE";;
|
|
c) CERTFILE=${OPTARG};;
|
|
e) ADMIN=${OPTARG};;
|
|
f) SERVERFILE=$OPTARG;;
|
|
h) usage
|
|
exit 1;;
|
|
i) ISSUER="TRUE";;
|
|
k) PKCSDBPASSWD=${OPTARG};;
|
|
n) NAGIOS="TRUE";;
|
|
p) PORT=$OPTARG;;
|
|
s) HOST=$OPTARG;;
|
|
t) CERTTYPE=$OPTARG;;
|
|
q) QUIET="TRUE";;
|
|
v) VERSION=$OPTARG;;
|
|
V) VALIDATION="TRUE";;
|
|
x) WARNDAYS=$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 utility is available
|
|
if [ ! -f ${GREP} ]
|
|
then
|
|
echo "ERROR: The grep binary does not exist in ${GREP} ."
|
|
echo "FIX: Please modify the \${GREP} variable in the program header."
|
|
exit 1
|
|
fi
|
|
|
|
### Check to make sure the mktemp and printf utilities are available
|
|
if [ ! -f ${MKTEMP} ] || [ ! -f ${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 ${MAIL} variable in the program header."
|
|
exit 1
|
|
fi
|
|
|
|
# Place to stash temporary files
|
|
CERT_TMP=$($MKTEMP /var/tmp/cert.XXXXXX)
|
|
ERROR_TMP=$($MKTEMP /var/tmp/error.XXXXXX)
|
|
|
|
### Baseline the dates so we have something to compare to
|
|
MONTH=$(${DATE} "+%m")
|
|
DAY=$(${DATE} "+%d")
|
|
YEAR=$(${DATE} "+%Y")
|
|
NOWJULIAN=$(date2julian ${MONTH#0} ${DAY#0} ${YEAR})
|
|
|
|
### Touch the files prior to using them
|
|
if [ ! -z "${CERT_TMP}" ] && [ ! -z "${ERROR_TMP}" ]
|
|
then
|
|
touch ${CERT_TMP} ${ERROR_TMP}
|
|
else
|
|
echo "ERROR: Problem creating temporary files"
|
|
echo "FIX: Check that mktemp works on your system"
|
|
exit 1
|
|
fi
|
|
|
|
### If a HOST and PORT were passed on the cmdline, use those values
|
|
if [ "${HOST}" != "" ] && [ "${PORT}" != "" ]
|
|
then
|
|
print_heading
|
|
check_server_status "${HOST}" "${PORT}"
|
|
|
|
### If a file is passed to the "-f" option on the command line, check
|
|
### each certificate or server / port combination in the file to see if
|
|
### they are about to expire
|
|
elif [ -f "${SERVERFILE}" ]
|
|
then
|
|
print_heading
|
|
egrep -v '(^#|^$)' ${SERVERFILE} | while read HOST PORT
|
|
do
|
|
if [ "$PORT" = "FILE" ]
|
|
then
|
|
check_file_status ${HOST} "FILE" "${HOST}"
|
|
else
|
|
check_server_status "${HOST}" "${PORT}"
|
|
fi
|
|
done
|
|
|
|
### Check to see if the certificate in CERTFILE is about to expire
|
|
elif [ "${CERTFILE}" != "" ]
|
|
then
|
|
print_heading
|
|
check_file_status ${CERTFILE} "FILE" "${CERTFILE}"
|
|
|
|
### There was an error, so print a detailed usage message and exit
|
|
else
|
|
usage
|
|
exit 1
|
|
fi
|
|
|
|
### Remove the temporary files
|
|
rm -f ${CERT_TMP} ${ERROR_TMP}
|
|
|
|
### Exit with a success indicator
|
|
if [ "${NAGIOS}" = "TRUE" ]; then
|
|
exit $RETCODE
|
|
else
|
|
exit 0
|
|
fi
|