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Added Kerberos support (depending on Authen::Krb5) #19

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Added Kerberos support (depending on Authen::Krb5) #19

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11 changes: 10 additions & 1 deletion plugins-scripts/Nagios/DBD/MSSQL/Server.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@ sub new {
hostname => $params{hostname},
username => $params{username},
password => $params{password},
kerberos => $params{kerberos},
port => $params{port} || 1433,
server => $params{server},
timeout => $params{timeout},
Expand Down Expand Up @@ -1416,6 +1417,7 @@ sub init {
my $self = shift;
my %params = @_;
my $retval = undef;
my $driver = "Sybase:";
if ($self->{mode} =~ /^server::tnsping/) {
# erstmal reserviert fuer irgendeinen tcp-connect
if (! $self->{connect}) {
Expand All @@ -1432,13 +1434,20 @@ sub init {
return undef;
}
$self->{dbi_options} = { RaiseError => 1, AutoCommit => $self->{commit}, PrintError => 1 };
$self->{dsn} = "DBI:Sybase:";
if ($params{kerberos}) {
# Kerberos only supported by the SQL native client
$driver = "ODBC:driver=SQL Server Native Client 11.0";
}
$self->{dsn} = "DBI:$driver";
if ($self->{hostname}) {
$self->{dsn} .= sprintf ";host=%s", $self->{hostname};
$self->{dsn} .= sprintf ";port=%s", $self->{port};
} else {
$self->{dsn} .= sprintf ";server=%s", $self->{server};
}
if ($params{kerberos}) {
$self->{dsn} .= ";Trusted_Connection=yes";
}
if ($params{currentdb}) {
if (index($params{currentdb},"-") != -1) {
$self->{dsn} .= sprintf ";database=\"%s\"", $params{currentdb};
Expand Down
20 changes: 20 additions & 0 deletions plugins-scripts/check_mssql_health.pl
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Original file line number Diff line number Diff line change
Expand Up @@ -180,6 +180,9 @@ ()
the mssql user
--password
the mssql user's password
--kerberos
where applicable, the Kerberos realm for authentication
(this will switch to the ODBC driver!)
--warning
the warning range
--critical
Expand Down Expand Up @@ -294,6 +297,7 @@ ($$)
"hostname=s",
"username=s",
"password=s",
"kerberos=s",
"port=i",
"server=s",
"currentdb=s",
Expand Down Expand Up @@ -554,6 +558,21 @@ ($$)
exit 3;
}

# Kerberos environment initialization
if ($commandline{kerberos}) {
use Authen::Krb5;
my $krb_context=Authen::Krb5::init_context();
my $krb_userp=Authen::Krb5::parse_name($commandline{username});
my $krb_credcache=Authen::Krb5::cc_default();
my $krb_servicep=Authen::Krb5::build_principal_ext(Authen::Krb5::parse_name("krbtgt"));

my $kerberos_result = Authen::Krb5::get_in_tkt_with_password($krb_userp, $krb_servicep, $commandline{password}, $krb_credcache);
if (! $kerberos_result) {
printf "UNKNOWN - Kerberos authentication failed for user ".$commandline{username}.": ".Authen::Krb5::error()."\n";
exit 3;
}
}

my %params = (
timeout => $TIMEOUT,
mode => (
Expand All @@ -576,6 +595,7 @@ ($$)
password => $commandline{password} ||
$ENV{NAGIOS__SERVICEMSSQL_PASS} ||
$ENV{NAGIOS__HOSTMSSQL_PASS},
kerberos => $commandline{kerberos},
port => $commandline{port} ||
$ENV{NAGIOS__SERVICEMSSQL_PORT} ||
$ENV{NAGIOS__HOSTMSSQL_PORT},
Expand Down