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rename check_cifs.pl to check_cifs

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Tómas Edwardsson 2010-11-21 19:35:04 +00:00
parent c5b576e053
commit c617a9a61d
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check_cifs.pl/trunk/check_cifs
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#!/usr/bin/perl -w
# Copyright 2010, Tomas Edwardsson <tommi@opensource.is>
# check_cifs is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# check_cifs is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use Nagios::Plugin;
use Data::Dumper;
# Create the Nagios plugin object
my $np = Nagios::Plugin->new(
usage => "Usage: %s -H <hostname> -u <username> -p <password> -s <share>",
version => "0.01",
);
# Add valid arguments
$np->add_arg(
spec => 'hostname|H=s',
help => '-H, --hostname=<hostname>',
required => 1,
);
$np->add_arg(
spec => 'username|u=s',
help => '-u, --username=<username>',
required => 1,
);
$np->add_arg(
spec => 'password|p=s',
help => '-p, --password=<password>',
required => 1,
);
$np->add_arg(
spec => 'share|s=s',
help => '-s, --share=<password>',
required => 1,
);
$np->add_arg(
spec => 'kerberos|k',
help => '-k, --kerberos',
required => 0,
);
$np->add_arg(
spec => 'writefile|w=s',
help => '-w, --writefile=<filepath>',
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 $program = shift;
eval {
system("$program &> /dev/null");
};
my $exit_value = $? >> 8;
if ($exit_value != 127) {
return 0;
} else {
$np->nagios_exit(UNKNOWN, "Could not execute $program");
}
}
# 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) {
# Cache saved to temporary file too avoid clashed with
# other plugins
$krb5cc = createtmpfile(0);
# 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;
$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, "'" . $np->opts->password . "'", '-U', "'" . $np->opts->username . "'",
}
# We want to test writing a file to the remote share
if ($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;
}
}
}
};