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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\Module\authYubiKey\Auth\Process; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\Auth; |
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use SimpleSAML\Logger; |
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use function array_keys; |
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use function implode; |
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use function sprintf; |
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use function strlen; |
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use function substr; |
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/* |
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* Copyright (C) 2009 Simon Josefsson <[email protected]>. |
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* |
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* This file is part of SimpleSAMLphp |
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* |
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* SimpleSAMLphp is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public License |
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* as published by the Free Software Foundation; either version 3 of |
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* the License, or (at your option) any later version. |
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* |
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* SimpleSAMLphp is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License License along with GNU SASL Library; if not, write to the |
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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* Boston, MA 02110-1301, USA. |
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* |
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*/ |
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/** |
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* A processing filter to replace the 'otp' attribute with an attribute |
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* 'yubiPrefix' that contains the static YubiKey prefix. |
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* |
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* Before: |
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* otp=ekhgjhbctrgnubeeklijcibbgjnbtjlffdnjbhjluvur |
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* |
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* After: |
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* otp undefined |
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* yubiPrefix=ekhgjhbctrgn |
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* |
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* You use it by adding it as an authentication filter in config.php: |
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* |
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* 'authproc.idp' => array( |
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* ... |
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* 90 => 'authYubiKey:OTP2YubiPrefix', |
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* ... |
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* ); |
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* |
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*/ |
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class OTP2YubiPrefix extends Auth\ProcessingFilter |
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{ |
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/** |
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* Filter out YubiKey 'otp' attribute and replace it with |
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* a 'yubiPrefix' attribute that leaves out the dynamic part. |
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* |
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* @param array &$state The state we should update. |
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*/ |
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public function process(array &$state): void |
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{ |
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Assert::keyExists($state, 'Attributes'); |
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$attributes = $state['Attributes']; |
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Logger::debug('OTP2YubiPrefix: enter with attributes: ' . implode(',', array_keys($attributes))); |
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$otps = $attributes['otp']; |
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$otp = $otps['0']; |
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$token_size = 32; |
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$identity = substr($otp, 0, strlen($otp) - $token_size); |
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$attributes['yubiPrefix'] = [$identity]; |
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Logger::info(sprintf( |
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'OTP2YubiPrefix: otp: %s identity: %s (otp keys: %s)', |
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$otp, |
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$identity, |
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implode(',', array_keys($otps)), |
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)); |
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unset($attributes['otp']); |
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Logger::debug(sprintf( |
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'OTP2YubiPrefix: leaving with attributes: %s', |
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implode(',', array_keys($attributes)), |
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)); |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-authyubikey
