54 lines
1.7 KiB
PHP
54 lines
1.7 KiB
PHP
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<?php
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namespace DeliciousBrains\WP_Offload_Media\Aws3\Aws\Crypto;
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use DeliciousBrains\WP_Offload_Media\Aws3\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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