OTP2YubiPrefix.php

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<?php

/*
 * Copyright (C) 2009  Simon Josefsson <simon@yubico.com>.
 *
 * This file is part of SimpleSAMLphp
 *
 * SimpleSAMLphp is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3 of
 * the License, or (at your option) any later version.
 *
 * SimpleSAMLphp 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License License along with GNU SASL Library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

class sspmod_authYubiKey_Auth_Process_OTP2YubiPrefix extends SimpleSAML_Auth_ProcessingFilter {


        public function process(&$state) {
                assert(is_array($state));
                assert(array_key_exists('Attributes', $state));
                $attributes = $state['Attributes'];

                SimpleSAML\Logger::debug('OTP2YubiPrefix: enter with attributes: ' . implode(',', array_keys($attributes)));

                $otps = $attributes['otp'];
                $otp = $otps['0'];

                $token_size = 32;
                $identity = substr ($otp, 0, strlen ($otp) - $token_size);

                $attributes['yubiPrefix'] = array($identity);

                SimpleSAML\Logger::info('OTP2YubiPrefix: otp: ' . $otp . ' identity: ' . $identity . ' (otp keys: ' . implode(',', array_keys($otps)) . ')');

                unset($attributes['otp']);

                SimpleSAML\Logger::debug('OTP2YubiPrefix: leaving with attributes: ' . implode(',', array_keys($attributes)));
        }

}