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<?php |
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declare(strict_types=1); |
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/** |
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* Copyright (c) 2017-present Ganbaro Digital Ltd |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* * Neither the names of the copyright holders nor the names of his |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* @category Libraries |
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* @package MessagingPipeline/Operations |
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* @author Stuart Herbert <[email protected]> |
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* @copyright 2017-present Ganbaro Digital Ltd www.ganbarodigital.com |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://ganbarodigital.github.io/php-mv-messaging-pipeline |
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*/ |
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namespace GanbaroDigital\MessagingPipeline\V1\Operations; |
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use GanbaroDigital\MessagingPipeline\V1\Exceptions\HmacNotFound; |
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/** |
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* remove a hashed-message authentication code (HMAC) from a message |
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*/ |
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class RemoveHmac |
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{ |
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/** |
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* remove a hashed-message authentication code (HMAC) from a message |
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* |
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* @param string $message |
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* the message that contains the HMAC |
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* @return string[] |
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* 0 - the HMAC |
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* 1 - $message, with the HMAC removed |
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* |
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* @throws HmacNotFound |
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* if $message doesn't contain a HMAC where we expect to find it |
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*/ |
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public static function from(string $message) : array |
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{ |
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// the HMAC will be at the front of the string, if it exists at all |
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$markerPos = FindHmacMarker::in($message); |
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// all done |
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return [ |
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substr($message, 0, $markerPos), |
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substr($message, $markerPos + 2) |
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]; |
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} |
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} |
ganbarodigital /
php-mv-messaging-pipeline
