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<?php
namespace Aws\S3;
use Aws\Api\Service;
use Aws\Arn\ArnInterface;
use Aws\Arn\S3\OutpostsArnInterface;
use Aws\Endpoint\PartitionEndpointProvider;
use Aws\Exception\InvalidRegionException;
/**
* @internal
*/
trait EndpointRegionHelperTrait
{
/** @var array */
private $config;
/** @var PartitionEndpointProvider */
private $partitionProvider;
/** @var string */
private $region;
/** @var Service */
private $service;
private function getPartitionSuffix(
ArnInterface $arn,
PartitionEndpointProvider $provider
) {
$partition = $provider->getPartition(
$arn->getRegion(),
$arn->getService()
);
return $partition->getDnsSuffix();
}
private function getSigningRegion(
$region,
$service,
PartitionEndpointProvider $provider
) {
$partition = $provider->getPartition($region, $service);
$data = $partition->toArray();
if (isset($data['services'][$service]['endpoints'][$region]['credentialScope']['region'])) {
return $data['services'][$service]['endpoints'][$region]['credentialScope']['region'];
}
return $region;
}
private function isFipsPseudoRegion($region)
{
return strpos($region, 'fips-') !== false || strpos($region, '-fips') !== false;
}
private function isMatchingSigningRegion(
$arnRegion,
$clientRegion,
$service,
PartitionEndpointProvider $provider
) {
$arnRegion = $this->stripPseudoRegions(strtolower($arnRegion));
$clientRegion = $this->stripPseudoRegions(strtolower($clientRegion));
if ($arnRegion === $clientRegion) {
return true;
}
if ($this->getSigningRegion($clientRegion, $service, $provider) === $arnRegion) {
return true;
}
return false;
}
private function stripPseudoRegions($region)
{
return str_replace(['fips-', '-fips'], ['', ''], $region);
}
private function validateFipsConfigurations(ArnInterface $arn)
{
if ($arn instanceof OutpostsArnInterface) {
if (empty($this->config['use_arn_region'])
|| !($this->config['use_arn_region']->isUseArnRegion())
) {
$region = $this->region;
} else {
$region = $arn->getRegion();
}
if ($this->isFipsPseudoRegion($region)) {
throw new InvalidRegionException(
'Fips is currently not supported with S3 Outposts access'
. ' points. Please provide a non-fips region or do not supply an'
. ' access point ARN.');
}
}
if ($this->isFipsPseudoRegion($this->region)
&& $this->stripPseudoRegions($this->region) != $arn->getRegion()
) {
throw new InvalidRegionException(
'Fips is currently not supported with cross region'
. ' requests. Please provide a non-fips region or supply a matching'
. ' access point ARN region and client region.');
}
}
private function validateMatchingRegion(ArnInterface $arn)
{
if (!($this->isMatchingSigningRegion(
$arn->getRegion(),
$this->region,
$this->service->getEndpointPrefix(),
$this->partitionProvider)
)) {
if (empty($this->config['use_arn_region'])
|| !($this->config['use_arn_region']->isUseArnRegion())
) {
throw new InvalidRegionException('The region'
. " specified in the ARN (" . $arn->getRegion()
. ") does not match the client region ("
. "{$this->region}).");
}
}
}
}