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Yubikey.php
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Yubikey.php
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<?php
/**
* Kolab 2-Factor-Authentication Yubikey driver implementation
*
* @author Thomas Bruederli <bruederli@kolabsys.com>
*
* Copyright (C) 2015, Kolab Systems AG <contact@kolabsys.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace Kolab2FA\Driver;
class Yubikey extends Base
{
public $method = 'yubikey';
protected $config = array(
'clientid' => '42',
'apikey' => 'FOOBAR=',
'hosts' => null,
);
public $user_settings = array(
'yubikeyid' => array(
'type' => 'text',
'editable' => true,
'label' => 'secret',
),
'created' => array(
'type' => 'datetime',
'editable' => false,
'hidden' => false,
'label' => 'created',
'generator' => 'time',
),
'active' => array(
'type' => 'boolean',
'editable' => false,
'hidden' => true,
),
);
protected $backend;
/**
*
*/
public function init(array $config)
{
parent::init($config);
// initialize validator
$this->backend = new \Yubikey\Validate($this->config['apikey'], $this->config['clientid']);
// set configured validation hosts
if (!empty($this->config['hosts'])) {
$this->backend->setHosts((array)$this->config['hosts']);
}
}
/**
*
*/
public function verify($code, $timestamp = null)
{
// get my secret from the user storage
$keyid = $this->get('yubikeyid');
$pass = false;
if (!strlen($keyid)) {
// LOG: "no key registered for user $this->username"
return false;
}
// check key prefix with associated Yubikey ID
if (strpos($code, $keyid) === 0) {
try {
$response = $this->backend->check($code);
$pass = $response->success() === true;
}
catch (\Exception $e) {
// TODO: log exception
}
}
console('VERIFY TOTP', $this->username, $keyid, $code, $pass);
return $pass;
}
/**
* @override
*/
public function set($key, $value)
{
if ($key == 'yubikeyid' && strlen($value) > 12) {
// verify the submitted code
try {
$response = $this->backend->check($value);
if ($response->success() !== true) {
// TODO: report error
return false;
}
}
catch (\Exception $e) {
return false;
}
// truncate the submitted yubikey code to 12 characters
$value = substr($value, 0, 12);
}
return parent::set($key, $value);
}
/**
* @override
*/
protected function set_user_prop($key, $value)
{
// set created timestamp
if ($key !== 'created' && !isset($this->created)) {
parent::set_user_prop('created', $this->get('created', true));
}
return parent::set_user_prop($key, $value);
}
}

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Yubikey.php (3 KB)

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