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<?php |
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namespace Dudlewebs\WPMCS\s3\Aws\Crypto; |
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|
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use Dudlewebs\WPMCS\s3\Aws\HasDataTrait; |
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use ArrayAccess; |
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use IteratorAggregate; |
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use InvalidArgumentException; |
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use JsonSerializable; |
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/** |
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* Stores encryption metadata for reading and writing. |
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* |
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* @internal |
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*/ |
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class MetadataEnvelope implements ArrayAccess, IteratorAggregate, JsonSerializable |
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{ |
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use HasDataTrait; |
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const CONTENT_KEY_V2_HEADER = 'x-amz-key-v2'; |
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const IV_HEADER = 'x-amz-iv'; |
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const MATERIALS_DESCRIPTION_HEADER = 'x-amz-matdesc'; |
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const KEY_WRAP_ALGORITHM_HEADER = 'x-amz-wrap-alg'; |
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const CONTENT_CRYPTO_SCHEME_HEADER = 'x-amz-cek-alg'; |
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const CRYPTO_TAG_LENGTH_HEADER = 'x-amz-tag-len'; |
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const UNENCRYPTED_CONTENT_LENGTH_HEADER = 'x-amz-unencrypted-content-length'; |
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private static $constants = []; |
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public static function getConstantValues() |
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{ |
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if (empty(self::$constants)) { |
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$reflection = new \ReflectionClass(static::class); |
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foreach (\array_values($reflection->getConstants()) as $constant) { |
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self::$constants[$constant] = \true; |
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} |
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} |
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return \array_keys(self::$constants); |
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} |
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/** |
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* @return void |
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*/ |
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#[\ReturnTypeWillChange] |
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public function offsetSet($name, $value) |
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{ |
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$constants = self::getConstantValues(); |
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if (\is_null($name) || !\in_array($name, $constants)) { |
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throw new InvalidArgumentException('MetadataEnvelope fields must' . ' must match a predefined offset; use the header constants.'); |
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} |
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$this->data[$name] = $value; |
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} |
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#[\ReturnTypeWillChange] |
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public function jsonSerialize() |
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{ |
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return $this->data; |
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} |
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} |
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