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<?php |
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namespace League\Glide\Signatures; |
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class Signature implements SignatureInterface |
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{ |
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/** |
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* Secret key used to generate signature. |
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* @var string |
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*/ |
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protected $signKey; |
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/** |
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* Create Signature instance. |
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* @param string $signKey Secret key used to generate signature. |
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*/ |
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public function __construct($signKey) |
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{ |
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$this->signKey = $signKey; |
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} |
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/** |
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* Add an HTTP signature to manipulation parameters. |
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* @param string $path The resource path. |
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* @param array $params The manipulation parameters. |
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* @return array The updated manipulation parameters. |
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*/ |
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public function addSignature($path, array $params) |
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{ |
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return array_merge($params, ['s' => $this->generateSignature($path, $params)]); |
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} |
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/** |
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* Validate a request signature. |
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* @param string $path The resource path. |
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* @param array $params The manipulation params. |
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* @throws SignatureException |
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*/ |
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public function validateRequest($path, array $params) |
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{ |
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if (!isset($params['s'])) { |
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throw new SignatureException('Signature is missing.'); |
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} |
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if ($params['s'] !== $this->generateSignature($path, $params)) { |
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throw new SignatureException('Signature is not valid.'); |
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} |
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} |
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/** |
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* Generate an HTTP signature. |
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* @param string $path The resource path. |
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* @param array $params The manipulation parameters. |
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* @return string The generated HTTP signature. |
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*/ |
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public function generateSignature($path, array $params) |
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{ |
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unset($params['s']); |
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ksort($params); |
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return md5($this->signKey.':'.ltrim($path, '/').'?'.http_build_query($params)); |
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} |
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} |
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thephpleague /
glide
