--- a/check_tlsa Mon May 02 23:12:13 2016 +0200
+++ b/check_tlsa Wed May 11 23:34:19 2016 +0200
@@ -1,20 +1,4 @@
#! /usr/bin/perl
-#dig TLSA _25._tcp.ssl.schlittermann.de +dnssec +m
-#dig TLSA _25._tcp.hh.schlittermann.de
-# http://search.cpan.org/~nierlein/Monitoring-Plugin-0.39/lib/Monitoring/Plugin.pm
-# http://perldoc.perl.org/File/Basename.html
-# needs debian packet: libmonitoring-plugin-perl
-#TLSA Record generieren
-# openssl x509 -in <servername>.crt -outform DER | openssl sha256
-# neben sha256 gibt's noch sha1 sha224 sha256 sha384 sha512
-# sowie md2 md5 rmd160 (wobei ich diese nicht in betracht ziehe)
-# ssl certifikat von einem remote server anfordern
-# openssl s_client -showcerts -connect ssl.schlittermann.de:443 < /dev/null
-# https://github.com/monitoring-plugins
-# https://github.com/monitoring-plugins/monitoring-plugin-perl/blob/master/t/check_stuff.pl
-
-#openssl s_client -starttls smtp -connect ssl.schlittermann.de:25 | openssl x509 -pubkey | openssl rsa -pubin -inform PEM -outform DER | openssl sha256
-#openssl s_client -starttls smtp -connect ssl.schlittermann.de:25 | openssl x509 -outform DER | openssl sha256
use strict;
use warnings;
@@ -24,76 +8,85 @@
use Monitoring::Plugin;
use File::Basename;
-#devel
-use Data::Dumper;
+my $ME = basename $0;
my $VERSION = '0.1';
-my $blurb = 'This Plugin is intendet to check TLSA Record';
-my $url = 'https://schlittermann.de';
+my $blurb = 'This Plugin is intendet to check validity of TLSA Record';
+my $url = 'http://www.schlittermann.de';
my $author = 'Heike Yvonne Pesch';
my $email = '<pesch@schlittermann.de>';
+my $usage = 'Usage: %s [ -v|--verbose ] [-H <host>] [-t <timeout>] '
+ . '[ -c|--critical=<critical threshold> ] '
+ . '[ -w|--warning=<warning threshold> ] '
+ . '[ -p|--port=<portnumber> ] '
+ . '[ -q|--queryserver=<DNS-Server-IP> ] ';
my $extra = <<_;
+
+NOTICE
+If you want to use a Hostlist, you have to put entrys like this:
+
+host
+host:port
+
+
+EXAMPLES
+$ME -H ssl.schlittermann.de
+$ME -H hh.schlittermann.de -p25
+$ME -H hh.schlittermann.de:25
+$ME -f hostlist.txt
+
Author: $author $email
For more information visit $url
_
-my $license = 'GPLv3';
-my $usage =
- 'Usage: %s [ -v|--verbose ] [-H <host>] [-t <timeout>] '
- . '[ -c|--critical=<critical threshold> ] '
- . '[ -w|--warning=<warning threshold> ] '
- . '[ -p|--port=<portnumber> ] '
- . '[ -q|--queryserver=<DNS-Server-IP> ] ';
my $check_tlsa = Monitoring::Plugin->new(
- usage => $usage,
- version => $VERSION,
- blurb => $blurb,
- extra => $extra,
- url => $url,
- license => $license,
- plugin => basename $0,
- timeout => 60,
+ usage => $usage,
+ version => $VERSION,
+ blurb => $blurb,
+ extra => $extra,
+ url => $url,
+ plugin => $ME,
+ timeout => 120,
);
$check_tlsa->add_arg(
- spec => 'host|H=s',
- help => q|Host/Domain to check|,
- required => 0,
+ spec => 'host|H=s',
+ help => q|Host/Domain to check|,
+ required => 0,
);
$check_tlsa->add_arg(
- spec => 'hostlist|f=s',
- help => q|Host/Domainlist in file to check|,
- required => 0,
+ spec => 'hostlist|f=s',
+ help => q|Host/Domainlist in file to check|,
+ required => 0,
);
$check_tlsa->add_arg(
- spec => 'expiry|e',
- help => q|check expiry of Certificate|,
- required => 0,
+ spec => 'expiry|e',
+ help => q|check expiry of Certificate|,
+ required => 0,
);
$check_tlsa->add_arg(
- spec => 'port|p=i',
- help => q|Port of Domain to check the TLSA (default: 443)|,
- required => 0,
- default => 443,
+ spec => 'port|p=i',
+ help => q|Port of Domain to check the TLSA (default: 443)|,
+ required => 0,
+ default => 443,
);
$check_tlsa->add_arg(
- spec => 'queryserver|q=s',
- help =>
- q|DNS Server to ask to check the TLSA (default: defined in resolve.conf)|,
- required => 0,
+ spec => 'queryserver|q=s',
+ required => 0,
+ help =>
+ q|DNS Server to ask to check the TLSA (default: defined in resolve.conf)|,
- #default => '8.8.8.8',
);
$check_tlsa->add_arg(
- spec => 'protocol|P=s',
- help => q|DNS Server to ask to check the TLSA (default: tcp)|,
- required => 0,
- default => 'tcp',
+ spec => 'protocol|P=s',
+ help => q|Protocol to ask to check the TLSA record of domain (default: tcp)|,
+ required => 0,
+ default => 'tcp',
);
$check_tlsa->getopts;
@@ -102,10 +95,11 @@
my $domainlist = $check_tlsa->opts->hostlist;
my $expiry = $check_tlsa->opts->expiry;
+
if (!$domain && !$domainlist) {
my $script = basename $0;
my $excuse = "Please set -H <domain> or -f <domainlist>\n"
- . "For all options try $script --help";
+ . "For all options try $script --help";
say $excuse;
exit 1;
@@ -114,11 +108,19 @@
my $port;
my $cert;
my $check_date;
+my $pattern = '^(?<domain>\S*\.[a-z]{2,4}?):{0,1}(?<port>[0-9]*$)';
-if (defined $domainlist && -e $domainlist) {
- print get_domains();
+# @TODO find better way
+# nearly the same check is defined in get_domains
+if ( defined $domain && $domain =~ /$pattern/) {
+ $domain = $+{domain};
+ $port = $+{port};
}
-else { print check_tlsa(); }
+
+if ( defined $domainlist && $domainlist ne '' && -e $domainlist) {
+ say get_domains();
+}
+else { say check_tlsa(); }
sub check_tlsa {
my $protocol = $check_tlsa->opts->protocol;
@@ -127,23 +129,24 @@
if ("$port" eq '25') {
$cert = "openssl s_client -starttls smtp -connect $domain:$port "
- . '< /dev/null 2>/dev/null';
+ . '< /dev/null 2>/dev/null';
}
else {
- #$port = $check_tlsa->opts->port;
$cert = "openssl s_client -connect $domain:$port "
- . '< /dev/null 2>/dev/null';
+ . '< /dev/null 2>/dev/null';
}
- my $digquery = "dig TLSA _$port._$protocol.$domain +short";
- my $diganswer = qx($digquery);
- my $dig = substr($diganswer, 6,);
- $dig =~ s/(\S*)\s+(\S*)$/$1$2/;
+ my $digquery = "dig TLSA _$port._$protocol.$domain +short";
+ my $diganswer = qx($digquery);
my $tlsa_usage = substr($diganswer, 0, 1);
my $tlsa_selector = substr($diganswer, 2, 1);
my $tlsa_match_type = substr($diganswer, 4, 1);
+ my $dig_tlsa = substr($diganswer, 6,);
+ my $valid_date = '';
my $hashit;
+ $dig_tlsa =~ s/(\S*)\s+(\S*)$/$1$2/;
+
for ($tlsa_match_type) {
when ('0') { die 'certs will be compared directly' }
when ('1') { $hashit = 'sha256' }
@@ -151,10 +154,9 @@
default { $hashit = 'sha256' }
}
- my $gentlsa =
- 'openssl x509 -pubkey | '
- . 'openssl rsa -pubin -inform PEM -outform DER 2>/dev/null| '
- . "openssl $hashit";
+ my $gentlsa = 'openssl x509 -pubkey | '
+ . 'openssl rsa -pubin -inform PEM -outform DER 2>/dev/null| '
+ . "openssl $hashit";
my $certtlsa = "$cert | $gentlsa";
$check_date = 'openssl x509 -noout -startdate -enddate';
@@ -167,22 +169,27 @@
$tlsa_record = uc($tlsa_record);
if (defined $expiry) {
- print check_cert_expiry();
+ $valid_date = check_cert_expiry();
+ }
+
+ if ($valid_date ne '') {
+ $valid_date = "\n$valid_date";
}
- if ("$tlsa_record" eq "$dig") {
+ if ("$tlsa_record" eq "$dig_tlsa") {
- #$return = "TLSA record is $tlsa_record and valid";
- #funktioniert nich nicht optimal mit hostliste
- $return = $check_tlsa->plugin_exit(OK, "$domain: TLSA record is valid")
- . "$domain: TLSA record is valid\n";
+ #this way the script exit when file is given :(
+ #$return = $check_tlsa->plugin_exit(OK, "$domain: TLSA record is valid")
+ # . "$domain: TLSA record is valid";
+
+ #this way it's behaves like I want it to
+ $return = "OK, $domain: TLSA record is valid $valid_date";
}
else {
- $check_tlsa->plugin_exit(CRITICAL, "$domain: TLSA record NOT valid");
+ #$check_tlsa->plugin_exit(CRITICAL, "$domain: TLSA record NOT valid");
+ $return = "CRITICAL, $domain: TLSA record is NOT valid";
}
- return $return;
-
- #return $cert;
+ say $return;
}
sub get_domains {
@@ -193,26 +200,15 @@
while (<$filehandle>) {
if (/$pattern/ig) {
$domain = $+{domain};
- $port = $+{port};
- #print "nunu,file ok",LF,"port: $+{port}",LF,"domain: $+{domain}",LF;
+ if ("$+{port}" =~ /^\s*$/) { $port = '443'; }
+ else { $port = $+{port}; }
$domain2check{$domain} = $port;
- #print check_tlsa();
+ check_tlsa($domain, $port);
}
else {
- die "wrong content";
- }
-
- foreach my $key (%domain2check) {
- $domain = $key;
- $port = $domain2check{$key};
- print $domain, ' ', $port, "\n";
-
- if ("$port" =~ /^\s*$/) { $port = '443'; }
- print $domain, ' ', $port, "\n";
-
- check_tlsa($domain, $port);
+ die "$domainlist has wrong or malformed content\n";
}
}
@@ -222,4 +218,3 @@
my $return = qx($check_date);
return $return;
}
-