/usr/lib/mon-contrib/mon.d/krb5.monitor is in mon-contrib 1.0+dfsg-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | #!/usr/bin/perl
#
# This script will attempt to get Kerberos 5 tickets from one or more kerberos
# KDCs. Requires Authen::Krb5.
#
# The user name, password, and realm can all be specified on the
# commandline, or they can be read from the monitor-auth.cf file in the mon
# config base directory. Matching entries in monitor-auth.cf will look like:
#
# *:*:user=username
# *:*:password=password-string
# *:*:realm=EXAMPLE.COM
#
# (Where *:* can be replaced with group:service, group:* or *:service, which
# allows you to define different settings for different hostgroups/services.
#
# A temporary kerberos config file will need to be written to disk in order
# to test the servers independently. The mon state dir will be used, or you
# can specify a directory on the command line.
#
# Arguments:
# [--directory dir] [--user user] [--password password]
# [--realm realm] hostname [...]
#
#
# Script Author: Carnegie Mellon University, Computing Services
# Technical Contact: net-dev@andrew.cmu.edu
# Copyright (c) 2002 Carnegie Mellon University. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. The name "Carnegie Mellon University" must not be used to endorse or
# promote products derived from this software without prior written
# permission. For permission or any legal details, please contact:
# Office of Technology Transfer
# Carnegie Mellon University
# 5000 Forbes Avenue
# Pittsburgh, PA 15213-3890
# (412) 268-4387, fax: (412) 268-7395
# tech-transfer@andrew.cmu.edu
#
# 4. Redistributions of any form whatsoever must retain the following
# acknowledgment: "This product includes software developed by Computing
# Services at Carnegie Mellon University (http://www.cmu.edu/computing/)."
#
# CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
# SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
# IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL,
# INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
use IO::File;
use Authen::Krb5;
use Getopt::Long;
use strict 'refs';
use strict 'subs';
$result = GetOptions(\%opt, 'debug', 'dir=s', 'user=s', 'password=s', 'realm=s');
die "Usage: $0 [--directory dir] [--user user] [--password password]\n [--realm realm] hostname [...]\n" if (!$result);
@failures = ();
@report = ();
$user = $opt{user};
$password = $opt{password};
$realm = $opt{realm};
&parse_cf;
print STDERR "Using user:$user password:$password realm:$realm\n" if ($opt{debug});
if (!$user || !$password || !$realm) {
print "krb5.monitor: user/password/realm were not specified.\n";
exit -1;
}
foreach $kdc ( @ARGV ) {
&krb5_poll( $kdc );
}
if (@failures == 0) {
exit 0;
}
print "@failures\n";
print "@report";
exit 1 if ($someok);
exit 255;
sub parse_cf {
my (%users, %passwords, %realms);
my $g=$ENV{MON_GROUP} || 'kerberos-servers';
my $s=$ENV{MON_SERVICE} || 'krb5';
my $file = $ENV{MON_CFBASEDIR}."/monitor-auth.cf";
print STDERR "Parsing $file\n" if ($opt{debug});
if ($cf=new IO::File "<$file") {
while (<$cf>) {
if (/^(\S+):user\s*=\s*(\S+)$/) {
$users{$1}=$2;
}
if (/^(\S+):password\s*=\s*(\S+)$/) {
$passwords{$1}=$2;
}
if (/^(\S+):realm\s*=\s*(\S+)$/) {
$realms{$1}=$2;
}
}
$user ||= $users{"$g:$s"};
$user ||= $users{"$g:*"};
$user ||= $users{"*:$s"};
$user ||= $users{"*:*"};
$password ||= $passwords{"$g:$s"};
$password ||= $passwords{"$g:*"};
$password ||= $passwords{"*:$s"};
$password ||= $passwords{"*:*"};
$realm ||= $realms{"$g:$s"};
$realm ||= $realms{"$g:*"};
$realm ||= $realms{"*:$s"};
$realm ||= $realms{"*:*"};
}
}
sub krb5_poll {
my ($kdc)=@_;
my $dir= $opt{'dir'} || $ENV{"MON_STATEDIR"} || "/usr/lib/mon/state.d";
my $confdir="$dir/krb5";
my $conffile="$confdir/$kdc/krb5.conf";
my ($cli,$serv,$cc,$ret, $error, $k5c, $constant);
mkdir($confdir) unless (-d $confdir);
unless (-f $conffile) {
$error=1;
if ($realm) {
mkdir "$confdir/$kdc";
$k5c=new IO::File "> $conffile";
if ($k5c) {
print $k5c <<"_EOC_";
[libdefaults]
default_realm=$realm
default_tgs_enctypes = des-cbc-crc
default_tkt_enctypes = des-cbc-crc
default_etypes = des-cbc-crc
default_etypes_des = des-cbc-crc
clockskew = 300
checksum_type = 1
[realms]
$realm = {
kdc=$kdc
}
_EOC_
$error=0;
close($k5c);
} else {
print STDERR "Couldn't create $conffile: $!\n" if ($opt{debug});
}
}
if ($error) {
push @failures, $kdc;
if ($realm) {
push @report, "\n$kdc: MONCONFIGURATION: could not initalize new config file\n";
} else {
push @report, "\n$kdc: MONCONFIGURATION: No config file\n";
}
return;
}
}
$ENV{KRB5_CONFIG}="$confdir/$kdc/krb5.conf";
Authen::Krb5::init_context();
Authen::Krb5::init_ets();
$cli=Authen::Krb5::parse_name("$user\@$realm");
unless ($cli) {
push @failures, $kdc;
push @report, "\n$kdc: MONCONFIGURATION: ".Authen::Krb5::error()."\n...while parsing $user\n";
Authen::Krb5::free_context();
return;
}
$serv=Authen::Krb5::build_principal_ext($cli);
unless ($serv) {
push @failures, $kdc;
push @report, "\n$kdc: MONCONFIGURATION: ".Authen::Krb5::error()."\n...while generating server name\n";
Authen::Krb5::free_context();
return;
}
$cc=Authen::Krb5::cc_resolve("MEMORY:");
unless ($cc) {
push @failures, $kdc;
push @report, "\n$kdc: MONCONFIGURATION: ".Authen::Krb5::error()."\n...while getting local credentials cache\n";
Authen::Krb5::free_context();
return;
}
unless ($cc->initialize($cli)) {
push @failures, $kdc;
push @report, "\n$kdc: MONCONFIGURATION: " .Authen::Krb5::error() ."\n...while preparing local credentials cache\n";
Authen::Krb5::free_context();
return;
}
$ret=Authen::Krb5::get_in_tkt_with_password($cli,$serv,$password,$cc);
if ($ret) {
$someok=1;
} else {
push @failures, $kdc;
$err= Authen::Krb5::error();
if ($err + 0 == Authen::Krb5::KRB5_KDC_UNREACH()) {
push @report, "\n$kdc: Timed Out\n";
} elsif ($err + 0 == Authen::Krb5::KRB5_REALM_CANT_RESOLVE()) {
push @report, "\n$kdc: Cannot resolve hostname\n";
} else {
push @report, "\n$kdc: $err\n";
}
}
Authen::Krb5::free_context();
}
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