/home/techb158/immovalet.com/vendor/aws/aws-sdk-php/src
Edit: /home/techb158/immovalet.com/vendor/aws/aws-sdk-php/src/IdempotencyTokenMiddleware.php (3782B)
bytesGenerator = $bytesGenerator
?: $this->findCompatibleRandomSource();
$this->service = $service;
$this->nextHandler = $nextHandler;
}
public function __invoke(
CommandInterface $command,
RequestInterface $request = null
) {
$handler = $this->nextHandler;
if ($this->bytesGenerator) {
$operation = $this->service->getOperation($command->getName());
$members = $operation->getInput()->getMembers();
foreach ($members as $member => $value) {
if ($value['idempotencyToken']) {
$bytes = call_user_func($this->bytesGenerator, 16);
// populating UUIDv4 only when the parameter is not set
$command[$member] = $command[$member]
?: $this->getUuidV4($bytes);
// only one member could have the trait enabled
break;
}
}
}
return $handler($command, $request);
}
/**
* This function generates a random UUID v4 string,
* which is used as auto filled token value.
*
* @param string $bytes 16 bytes of pseudo-random bytes
* @return string
* More information about UUID v4, see:
* https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_.28random.29
* https://tools.ietf.org/html/rfc4122#page-14
*/
private static function getUuidV4($bytes)
{
// set version to 0100
$bytes[6] = chr(ord($bytes[6]) & 0x0f | 0x40);
// set bits 6-7 to 10
$bytes[8] = chr(ord($bytes[8]) & 0x3f | 0x80);
return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($bytes), 4));
}
/**
* This function decides the PHP function used in generating random bytes.
*
* @return callable|null
*/
private function findCompatibleRandomSource()
{
if (function_exists('random_bytes')) {
return 'random_bytes';
}
if (function_exists('openssl_random_pseudo_bytes')) {
return 'openssl_random_pseudo_bytes';
}
if (function_exists('mcrypt_create_iv')) {
return 'mcrypt_create_iv';
}
}
}