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<?php |
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namespace Dudlewebs\WPMCS\s3\Aws\S3; |
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|
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use Dudlewebs\WPMCS\s3\AWS\CRT\CRT; |
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use Dudlewebs\WPMCS\s3\Aws\Exception\CommonRuntimeException; |
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use Dudlewebs\WPMCS\s3\GuzzleHttp\Psr7; |
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use InvalidArgumentException; |
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trait CalculatesChecksumTrait |
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{ |
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private static $supportedAlgorithms = ['crc32c' => \true, 'crc32' => \true, 'sha256' => \true, 'sha1' => \true]; |
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/** |
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* @param string $requestedAlgorithm the algorithm to encode with |
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* @param string $value the value to be encoded |
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* @return string |
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*/ |
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public static function getEncodedValue($requestedAlgorithm, $value) |
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{ |
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$requestedAlgorithm = \strtolower($requestedAlgorithm); |
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$useCrt = \extension_loaded('awscrt'); |
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if (isset(self::$supportedAlgorithms[$requestedAlgorithm])) { |
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if ($useCrt) { |
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$crt = new Crt(); |
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switch ($requestedAlgorithm) { |
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case 'crc32c': |
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return \base64_encode(\pack('N*', $crt::crc32c($value))); |
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case 'crc32': |
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return \base64_encode(\pack('N*', $crt::crc32($value))); |
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default: |
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break; |
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} |
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} |
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if ($requestedAlgorithm === 'crc32c') { |
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throw new CommonRuntimeException("crc32c is not supported for checksums " . "without use of the common runtime for php. Please enable the CRT or choose " . "a different algorithm."); |
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} |
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if ($requestedAlgorithm === "crc32") { |
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$requestedAlgorithm = "crc32b"; |
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} |
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return \base64_encode(Psr7\Utils::hash($value, $requestedAlgorithm, \true)); |
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} |
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$validAlgorithms = \implode(', ', \array_keys(self::$supportedAlgorithms)); |
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throw new InvalidArgumentException("Invalid checksum requested: {$requestedAlgorithm}." . " Valid algorithms supported by the runtime are {$validAlgorithms}."); |
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} |
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} |
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