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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/Requirements |
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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\Requirements; |
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use GanbaroDigital\Defensive\V1\Interfaces\ListRequirement; |
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use GanbaroDigital\Defensive\V1\Interfaces\Requirement; |
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use GanbaroDigital\Defensive\V1\Requirements\InvokeableRequirement; |
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use GanbaroDigital\Defensive\V1\Requirements\ListableRequirement; |
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use GanbaroDigital\MessagingPipeline\V1\Checks\IsValidEncryptionCipher; |
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use GanbaroDigital\MessagingPipeline\V1\Checks\IsValidEncryptionIV; |
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use GanbaroDigital\MessagingPipeline\V1\Exceptions\InvalidEncryptionIV; |
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use GanbaroDigital\MessagingPipeline\V1\Exceptions\UnsupportedEncryptionCipher; |
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/** |
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* make sure that we have a valid encryption initialisation vector |
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*/ |
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class RequireValidEncryptionIV implements Requirement, ListRequirement |
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{ |
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// saves us having to declare ::__invoke() ourselves |
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use InvokeableRequirement; |
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// saves us having to declare ::toList() ourselves |
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use ListableRequirement; |
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/** |
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* the encryption cipher that we're checking against |
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* @var string |
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*/ |
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private $encryptionCipher; |
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/** |
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* create a Requirement that is ready to use |
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* |
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* @param string $encryptionCipher |
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* the encryption cipher that we're checking against |
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*/ |
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public function __construct(string $encryptionCipher) |
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{ |
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// robustness!! |
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if (!IsValidEncryptionCipher::check($encryptionCipher)) { |
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throw UnsupportedEncryptionCipher::newFromInputParameter($encryptionCipher, '$encryptionCipher'); |
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} |
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// all is well |
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$this->encryptionCipher = $encryptionCipher; |
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} |
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/** |
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* create a Requirement that is ready to use |
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* |
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* @param string $encryptionCipher |
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* the encryption cipher that we're checking against |
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* @return Requirement |
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*/ |
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public static function apply(string $encryptionCipher) : Requirement |
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{ |
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return new static($encryptionCipher); |
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} |
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/** |
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* make sure that we have a valid encryption cipher |
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* |
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* @param string $item |
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* the item to examine |
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* @param string $fieldOrVarName |
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* what do you call $item in your own code? |
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* @return void |
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* |
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* @throws UnsupportedEncryptionIV |
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* if $item isn't a valid initialisation vector for the given |
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* encryption type |
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*/ |
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public function to($item, $fieldOrVarName='$item') |
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{ |
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// are we happy? |
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if (IsValidEncryptionIV::check($this->encryptionCipher, $item)) { |
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// yes we are |
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return; |
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} |
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// if we get here, then no, we are not happy |
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throw InvalidEncryptionIV::newFromInputParameter($item, $fieldOrVarName, [ |
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'cipher' => $this->encryptionCipher |
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]); |
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} |
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} |
ganbarodigital /
php-mv-messaging-pipeline
