--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/check_cert.pl Mon Jan 07 12:43:56 2019 +0100
@@ -0,0 +1,243 @@
+#!/usr/bin/perl -w
+
+use strict;
+use warnings;
+use File::Basename;
+use Getopt::Long;
+use Date::Manip;
+use IPC::Open2;
+use lib "/usr/lib/nagios/plugins";
+use utils qw (%ERRORS &print_revision &support);
+
+sub print_help();
+sub print_usage();
+
+my $ME = basename $0;
+my ( $opt_w, $opt_c, $opt_V, $opt_h, $opt_b, $opt_s, @opt_certfiles );
+my ( $w_time, $c_time, $result, $message, %certs );
+my ( @critical, @warning, @ok );
+
+$opt_w = "1month";
+$opt_c = "1week";
+$opt_b = "/usr/bin/openssl";
+$opt_s = "md5WithRSAEncryption";
+
+Getopt::Long::Configure('bundling');
+GetOptions(
+ "V" => \$opt_V,
+ "version" => \$opt_V,
+ "h" => \$opt_h,
+ "help" => \$opt_h,
+ "b=s" => \$opt_b,
+ "binary" => \$opt_b,
+ "w=s" => \$opt_w,
+ "warning=s" => \$opt_w,
+ "c=s" => \$opt_c,
+ "critical=s" => \$opt_c,
+ "s=s" => \$opt_s,
+ "signature=s" => \$opt_s,
+ "f=s" => \@opt_certfiles,
+ "certfile=s" => \@opt_certfiles
+);
+
+if ($opt_V) {
+ print_revision( $ME, "1.2" );
+ exit $ERRORS{"OK"};
+}
+
+if ($opt_h) {
+ print_help();
+ exit $ERRORS{"OK"};
+}
+
+# check openssl binary
+unless ( -x $opt_b ) {
+ print "CERT CRITICAL: OpenSSL not found or not executable - $opt_b\n";
+ exit $ERRORS{"CRITICAL"};
+}
+
+unless (@opt_certfiles) {
+ print "CERT WARNING: Not defined any certificate files\n";
+ exit $ERRORS{"WARNING"};
+}
+
+@opt_certfiles = split( /,/, join( ',', @opt_certfiles ) );
+
+# extract certificate data
+foreach my $file (@opt_certfiles) {
+ unless ( -r $file ) {
+ print
+"CERT CRITICAL: $file - not exists or not read permission is granted\n";
+ exit $ERRORS{"CRITICAL"};
+ }
+ my $no_print =
+"no_header,no_version,no_serial,no_validity,no_subject,no_issuer,no_pubkey,no_sigdump,no_extensions";
+ my @cmd_x509 = (
+ $opt_b, "x509", "-in", $file,
+ "-noout", "-text", "-certopt", $no_print,
+ "-subject", "-enddate", "-purpose"
+ );
+ my @cmd_pkcs12 = (
+ $opt_b, "pkcs12", "-in", $file,
+ "-clcerts", "-nokeys", "-nomacver", "-passin",
+ "pass:"
+ );
+ my @cmd_pipe = (
+ $opt_b, "x509", "-noout", "-text",
+ "-certopt", $no_print, "-subject", "-enddate",
+ "-purpose"
+ );
+ my ( $temp, $sig, $cn, $enddate, $rc, $cert_type );
+ open( CERT, "-|" ) or do {
+ open( STDERR, ">&STDOUT" );
+ exec(@cmd_x509);
+ };
+
+ # check x509 certificates
+ while (<CERT>) {
+ /unable to load certificate/ and $rc = 1 and last;
+ /Signature\sAlgorithm:\s($opt_s)\s+$/ and $sig = $1;
+ /^subject=\s.*CN=(.*)\s+$/ and $cn = $1;
+ /^notAfter=(.*)\s+$/ and $enddate = $1;
+ /^(SSL\sclient)\s:\sYes$/ and $cert_type = $1;
+ /^(SSL\sserver)\s:\sYes$/ and $cert_type = $1;
+ }
+ close(CERT);
+
+ # check pkcs12 certificates
+ if ($rc) {
+ open( PKCS12, "@cmd_pkcs12 |" );
+
+ while (<PKCS12>) {
+ $temp .= $_;
+ }
+ close(PKCS12);
+
+ local ( *READ, *WRITE );
+ open2( \*READ, \*WRITE, @cmd_pipe ) or die "Can't fork: $!\n";
+ print WRITE $temp;
+ close(WRITE);
+
+ while (<READ>) {
+ /unable to load certificate/
+ and print "CERT CRITICAL: unable to load certificate\n"
+ and exit $ERRORS{"CRITICAL"};
+ /Signature\sAlgorithm:\s($opt_s)\s+$/ and $sig = $1;
+ /^subject=\s.*CN=(.*)\s+$/ and $cn = $1;
+ /^notAfter=(.*)\s+$/ and $enddate = $1;
+ /^(SSL\sclient)\s:\sYes$/ and $cert_type = $1;
+ /^(SSL\sserver)\s:\sYes$/ and $cert_type = $1;
+ }
+ close(READ);
+ }
+
+ # fill the hash
+ push( @{ $certs{$file} }, ( $cn, $enddate, $sig, $cert_type ) );
+}
+
+# calculate the time
+$w_time = DateCalc( "today", "+ $opt_w" );
+$c_time = DateCalc( "today", "+ $opt_c" );
+
+# check expire date
+foreach ( sort keys %certs ) {
+ my $enddate;
+ if ( @{ $certs{$_} }[1] =~ /(\w+\s+\d+\s+\d+:\d+:\d+\s+\d+)/ ) {
+ $enddate = $1;
+ }
+ $enddate = ParseDate($enddate);
+ unless ($enddate) {
+ print "CERT CRITICAL: Can't parse enddate\n";
+ exit $ERRORS{"CRITICAL"};
+ }
+
+ &Date_Cmp( $enddate, $w_time ) > 0 and push( @{ $certs{$_} }, "OK" ), next;
+ &Date_Cmp( $enddate, $c_time ) > 0
+ and push( @{ $certs{$_} }, "WARNING" ), next;
+ push( @{ $certs{$_} }, "CRITICAL" );
+}
+
+# looking for stats
+foreach ( sort keys %certs ) {
+ if ( @{ $certs{$_} }[2] ) {
+ if ( @{ $certs{$_} }[2] eq "$opt_s" ) {
+ push( @warning,
+"file: $_, CN=@{$certs{$_}}[0] Signature Algorithm: @{$certs{$_}}[2]"
+ );
+ }
+ }
+
+ if ( @{ $certs{$_} }[4] eq "WARNING" ) {
+ push( @warning,
+"file: $_, CN=@{$certs{$_}}[0] expires @{$certs{$_}}[1] type: @{$certs{$_}}[3]"
+ );
+ }
+ elsif ( @{ $certs{$_} }[4] eq "CRITICAL" ) {
+ push( @critical,
+"file: $_, CN=@{$certs{$_}}[0] expires @{$certs{$_}}[1] type: @{$certs{$_}}[3]"
+ );
+ }
+ else {
+ push( @ok,
+"file: $_, CN=@{$certs{$_}}[0] expires @{$certs{$_}}[1] type: @{$certs{$_}}[3]"
+ );
+ }
+}
+
+# return the state
+if (@critical) {
+ print "CERT CRITICAL: @critical\n";
+ exit $ERRORS{"CRITICAL"};
+}
+elsif (@warning) {
+ print "CERT WARNING: @warning\n";
+ exit $ERRORS{"WARNING"};
+}
+else {
+ print "CERT OK: @ok\n";
+ exit $ERRORS{"OK"};
+}
+
+sub print_usage() {
+ print "Usage:\n";
+ print
+" $ME [-b <binary>] [-w <time>] [-c <time>] [-s <signature algorithm>] [-f <file,file,file,...>]\n";
+ print " $ME [-h | --help]\n";
+ print " $ME [-V | --version]\n";
+}
+
+sub print_help() {
+ print_revision( $ME, "1.2" );
+ print "Copyright (c) 2010 Christian Arnold\n\n";
+ print "This plugin checks the expire date for openssl certificates.\n\n";
+ print_usage();
+ print "\n";
+ print " -b, --binary <binary>\n";
+ print " Path of openssl binary (default: /usr/bin/openssl)\n";
+ print " -w, --warning <time>\n";
+ print
+" Certificat should not be more than this time older (default: 1month)\n";
+ print
+" For time can be used year, month, day, hour, minute, second and weeks.\n";
+ print " -c, --critical <time>\n";
+ print
+" Certificat should not be more than this time older (default: 1week)\n";
+ print
+" For time can be used year, month, day, hour, minute, second and weeks.\n";
+ print " -s, --signature <signature algorithm>\n";
+ print
+" Return WARNING status if <signature algorithm> is used (default: md5WithRSAEncryption).\n";
+ print " -f, --certfile <file,file,file, ...>\n";
+ print
+" Absolute path of x509 or pkcs12 openssl certificate files, use comma-separated lists for multiple files.\n";
+ print " -h, --help\n";
+ print " Print detailed help screen\n";
+ print " -V, --version\n";
+ print " Print version information\n";
+ print "\n";
+ support();
+}
+
+exit;
+
+# vim:sts=4 sw=4 aw ai sm: