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Code Issues Releases Wiki Activity

check_cifs.pl finally workable

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This commit is contained in:
Tómas Edwardsson 2010-03-31 14:25:39 +00:00
parent b924da85d6
commit c2caf76cff
1 changed files with 114 additions and 24 deletions
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138
check_cifs.pl/trunk/check_cifs.pl
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@ -7,7 +7,7 @@ use Data::Dumper;
# Create the Nagios plugin object
my $np = Nagios::Plugin->new(
usage => "Usage: %s -H <hostname> -c <snmp_community>",
usage => "Usage: %s -H <hostname> -u <username> -p <password> -s <share>",
version => "0.01",
);
@ -48,8 +48,43 @@ $np->add_arg(
required => 0,
);
$np->add_arg(
spec => 'writesize|W=i',
help => '-W, --writesize=<megabytes>',
required => 0,
default => 10
);
my @tmpfiles = ();
sub createtmpfile($) {
my $size = shift;
$size = 10 if (!defined $size);
$np->nagios_exit(UNKNOWN, "Size for param writesize not numeric") if ($size !~ /^\d+$/);
my $tmpfile = `mktemp check-cifs-XXXXXX -p /tmp`;
my $rc = $? >> 8;
chomp($tmpfile);
push @tmpfiles, $tmpfile;
if ($rc) {
$np->nagios_exit(UNKNOWN, "Unable to run mktemp for temporary file");
}
open TMP, ">$tmpfile" or
$np->nagios_exit(UNKNOWN, "Cannot open tempfile for writing: $!");
for (1..$size) {
print TMP "0"x(1024*1024);
}
close TMP;
return $tmpfile;
}
sub testbin($) {
my $program = shift;
eval {
@ -59,61 +94,116 @@ sub testbin($) {
if ($exit_value != 127) {
return 0;
} else {
print "Could not execute $program\n";
exit 2;
$np->nagios_exit(UNKNOWN, "Could not execute $program");
}
}
sub usage() {
print <<EOUSAGE;
Usage $0 -H <hostname> -s <share> -u <username> -p <password>
EOUSAGE
}
# Check needed binaries
testbin("smbclient");
testbin("kinit");
testbin("kdestroy");
# Parse command line operations
$np->getopts;
# Initialize global for kerberos credentials cache
my $krb5cc = "";
# Login with kerberos
if ($np->opts->kerberos) {
my $tmp = `mktemp check-cifs-XXXXXX --tmpdir=/tmp`;
my $rc = $? >> 8;
chomp($tmp);
# Cache saved to temporary file too avoid clashed with
# other plugins
$krb5cc = createtmpfile(0);
if ($rc) {
nagios_exit(UNKNOWN, "Unable to run mktemp for kerberos cache");
}
my $kcmd = sprintf("echo '%s' | kinit -c %s '%s' 2>&1", $np->opts->password, $tmp, $np->opts->username);
# Execute kinit kerberised login
my $kcmd = sprintf("echo '%s' | kinit -c %s '%s' 2>&1", $np->opts->password, $krb5cc, $np->opts->username);
my $kinit = `$kcmd`;
my $exit_value = $? >> 8;
# Check return code for failures
if ($exit_value != 0) {
chomp $kinit;
nagios_exit(CRITICAL, "Critical: Unable to log in with kerberos - $kinit\n";
$np->nagios_exit(CRITICAL, "Unable to log in with kerberos - $kinit");
}
}
# Array of arguments for smbclient based on various circumstances
my @smbclient_opts;
my @smbclient_commands;
# Set servicename
push @smbclient_opts, sprintf("//%s/%s", $np->opts->hostname, $np->opts->share);
# Kerberised or NTLM ?
if ($np->opts->kerberos) {
push @smbclient_opts, '-k'
} else {
push @smbclient_opts, sprintf("'%s'", $np->opts->username), '-U', "'$np->opts->username'",
push @smbclient_opts, "'" . $np->opts->password . "'", '-U', "'" . $np->opts->username . "'",
}
print "smbclient " . join(" ", @smbclient_opts) . "\n";
# We want to test writing a file to the remote share
if ($np->opts->writefile) {
my $tmpfile = createtmpfile($np->opts->writesize);
my $cmd = ($krb5cc ? "KRB5CCNAME=$krb5cc " : "") . "smbclient " . join(" ", @smbclient_opts) . " -c 'put $tmpfile " . $np->opts->writefile . "' 2>&1 |";
open SMBCLIENT, $cmd or
$np->nagios_exit(CRITICAL, "Unable to run CIFS connection: $!");
# Toss header
<SMBCLIENT>;
my $return = <SMBCLIENT>;
chomp($return);
if ($return =~ /^putting file \S+? as \S+? \((\d+\.\d*) /) {
close SMBCLIENT;
$np->add_perfdata(
label => "file_transfer",
value => $1,
uom => "KBps" );
$np->nagios_exit(OK, "Connected and uploaded file at rate of $1" . ($np->opts->kerberos ? " (kerberised)" : ""));
} else {
close SMBCLIENT;
$np->nagios_exit(CRITICAL, "Unable to upload file" . ($np->opts->kerberos ? " (kerberised)" : "") . ": $return");
}
# Just a regular connection test
} else {
my $cmd = ($krb5cc ? "KRB5CCNAME=$krb5cc " : "") . "smbclient " . join(" ", @smbclient_opts) . " -c '' 2>&1 |";
open SMBCLIENT, $cmd or
$np->nagios_exit(CRITICAL, "Unable to run CIFS connection: $!");
# Toss header
<SMBCLIENT>;
my $nterror = <SMBCLIENT>;
close SMBCLIENT;
chomp($nterror) if ($nterror);
if ($nterror) {
$np->nagios_exit(CRITICAL, "Unable to connect to share" . ($np->opts->kerberos ? " (kerberised)" : "") . ": $nterror");
}
$np->nagios_exit(OK, "Connected successfully" . ($np->opts->kerberos ? " (kerberised)" : ""));
}
# Hack to remove the krb5 credentials file if we have exited
END {
if (@tmpfiles) {
foreach my $f (@tmpfiles) {
if (-f $f) {
unlink $f;
}
}
}
};
__END__
my $kdestroy = `echo $parms{pass} | kdestroy -c $tmp`;
$exit_value = $? >> 8;
#print "kdestroy: $kdestroy\nrc: $exit_value\n";