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File Name : BucketEndpointArnMiddleware.php

<?php
namespace Aws\S3;

use Aws\Api\Service;
use Aws\Arn\AccessPointArnInterface;
use Aws\Arn\ArnParser;
use Aws\Arn\ObjectLambdaAccessPointArn;
use Aws\Arn\Exception\InvalidArnException;
use Aws\Arn\AccessPointArn as BaseAccessPointArn;
use Aws\Arn\S3\OutpostsAccessPointArn;
use Aws\Arn\S3\MultiRegionAccessPointArn;
use Aws\Arn\S3\OutpostsArnInterface;
use Aws\CommandInterface;
use Aws\Endpoint\PartitionEndpointProvider;
use Aws\Exception\InvalidRegionException;
use Aws\Exception\UnresolvedEndpointException;
use Aws\S3\Exception\S3Exception;
use InvalidArgumentException;
use Psr\Http\Message\RequestInterface;

/**
 * Checks for access point ARN in members targeting BucketName, modifying
 * endpoint as appropriate
 *
 * @internal
 */
class BucketEndpointArnMiddleware
{
    use EndpointRegionHelperTrait;

/** @var callable */
    private $nextHandler;

/** @var array */
    private $nonArnableCommands = ['CreateBucket'];

/** @var boolean */
    private $isUseEndpointV2;

/**
     * Create a middleware wrapper function.
     *
     * @param Service $service
     * @param $region
     * @param array $config
     * @return callable
     */
    public static function wrap(
        Service $service,
        $region,
        array $config,
        $isUseEndpointV2
    ) {
        return function (callable $handler) use ($service, $region, $config, $isUseEndpointV2) {
            return new self($handler, $service, $region, $config, $isUseEndpointV2);
        };
    }

public function __construct(
        callable $nextHandler,
        Service $service,
        $region,
        array $config = [],
        $isUseEndpointV2 = false
    ) {
        $this->partitionProvider = PartitionEndpointProvider::defaultProvider();
        $this->region = $region;
        $this->service = $service;
        $this->config = $config;
        $this->nextHandler = $nextHandler;
        $this->isUseEndpointV2 = $isUseEndpointV2;
    }

public function __invoke(CommandInterface $cmd, RequestInterface $req)
    {
        $nextHandler = $this->nextHandler;

$op = $this->service->getOperation($cmd->getName())->toArray();
        if (!empty($op['input']['shape'])) {
            $service = $this->service->toArray();
            if (!empty($input = $service['shapes'][$op['input']['shape']])) {
                foreach ($input['members'] as $key => $member) {
                    if ($member['shape'] === 'BucketName') {
                        $arnableKey = $key;
                        break;
                    }
                }

if (!empty($arnableKey) && ArnParser::isArn($cmd[$arnableKey])) {

try {
                        // Throw for commands that do not support ARN inputs
                        if (in_array($cmd->getName(), $this->nonArnableCommands)) {
                            throw new S3Exception(
                                'ARN values cannot be used in the bucket field for'
                                . ' the ' . $cmd->getName() . ' operation.',
                                $cmd
                            );
                        }

if (!$this->isUseEndpointV2) {
                            $arn = ArnParser::parse($cmd[$arnableKey]);
                            $partition = $this->validateArn($arn);
                            $host = $this->generateAccessPointHost($arn, $req);
                        }
                        // Remove encoded bucket string from path
                        $path = $req->getUri()->getPath();
                        $encoded = rawurlencode($cmd[$arnableKey]);
                        $len = strlen($encoded) + 1;
                        if (trim(substr($path, 0, $len), '/') === "{$encoded}") {
                            $path = substr($path, $len);
                            if (substr($path, 0, 1) !== "/") {
                                $path = '/' . $path;
                            }
                        }
                        if (empty($path)) {
                            $path = '';
                        }

// Set modified request
                        if ($this->isUseEndpointV2) {
                            $req = $req->withUri(
                                $req->getUri()->withPath($path)

);
                            goto next;
                        }

$req = $req->withUri(
                            $req->getUri()->withPath($path)->withHost($host)
                        );

// Update signing region based on ARN data if configured to do so
                        if ($this->config['use_arn_region']->isUseArnRegion()
                            && !$this->config['use_fips_endpoint']->isUseFipsEndpoint()
                        ) {
                            $region = $arn->getRegion();
                        } else {
                            $region = $this->region;
                        }
                        $endpointData = $partition([
                            'region' => $region,
                            'service' => $arn->getService()
                        ]);
                        $cmd['@context']['signing_region'] = $endpointData['signingRegion'];

// Update signing service for Outposts and Lambda ARNs
                        if ($arn instanceof OutpostsArnInterface
                            || $arn instanceof ObjectLambdaAccessPointArn
                        ) {
                            $cmd['@context']['signing_service'] = $arn->getService();
                        }
                    } catch (InvalidArnException $e) {
                        // Add context to ARN exception
                        throw new S3Exception(
                            'Bucket parameter parsed as ARN and failed with: '
                            . $e->getMessage(),
                            $cmd,
                            [],
                            $e
                        );
                    }
                }
            }
        }
        next:
            return $nextHandler($cmd, $req);
    }

private function generateAccessPointHost(
        BaseAccessPointArn $arn,
        RequestInterface $req
    ) {
        if ($arn instanceof OutpostsAccessPointArn) {
            $accesspointName = $arn->getAccesspointName();
        } else {
            $accesspointName = $arn->getResourceId();
        }

if ($arn instanceof MultiRegionAccessPointArn) {
            $partition = $this->partitionProvider->getPartitionByName(
                $arn->getPartition(),
                's3'
            );
            $dnsSuffix = $partition->getDnsSuffix();
            return "{$accesspointName}.accesspoint.s3-global.{$dnsSuffix}";
        }

$host = "{$accesspointName}-" . $arn->getAccountId();

$useFips = $this->config['use_fips_endpoint']->isUseFipsEndpoint();
        $fipsString = $useFips ? "-fips" : "";

if ($arn instanceof OutpostsAccessPointArn) {
            $host .= '.' . $arn->getOutpostId() . '.s3-outposts';
        } else if ($arn instanceof ObjectLambdaAccessPointArn) {
            if (!empty($this->config['endpoint'])) {
                return $host . '.' . $this->config['endpoint'];
            } else {
                $host .= ".s3-object-lambda{$fipsString}";
            }
        } else {
            $host .= ".s3-accesspoint{$fipsString}";
            if (!empty($this->config['dual_stack'])) {
                $host .= '.dualstack';
            }
        }

if (!empty($this->config['use_arn_region']->isUseArnRegion())) {
            $region = $arn->getRegion();
        } else {
            $region = $this->region;
        }
        $region = \Aws\strip_fips_pseudo_regions($region);
        $host .= '.' . $region . '.' . $this->getPartitionSuffix($arn, $this->partitionProvider);
        return $host;
    }

/**
     * Validates an ARN, returning a partition object corresponding to the ARN
     * if successful
     *
     * @param $arn
     * @return \Aws\Endpoint\Partition
     */
    private function validateArn($arn)
    {
        if ($arn instanceof AccessPointArnInterface) {

// Dualstack is not supported with Outposts access points
            if ($arn instanceof OutpostsAccessPointArn
                && !empty($this->config['dual_stack'])
            ) {
                throw new UnresolvedEndpointException(
                    'Dualstack is currently not supported with S3 Outposts access'
                    . ' points. Please disable dualstack or do not supply an'
                    . ' access point ARN.');
            }
            if ($arn instanceof MultiRegionAccessPointArn) {
                if (!empty($this->config['disable_multiregion_access_points'])) {
                    throw new UnresolvedEndpointException(
                        'Multi-Region Access Point ARNs are disabled, but one was provided.  Please'
                        . ' enable them or provide a different ARN.'
                    );
                }
                if (!empty($this->config['dual_stack'])) {
                    throw new UnresolvedEndpointException(
                        'Multi-Region Access Point ARNs do not currently support dual stack. Please'
                        . ' disable dual stack or provide a different ARN.'
                    );
                }
            }
            // Accelerate is not supported with access points
            if (!empty($this->config['accelerate'])) {
                throw new UnresolvedEndpointException(
                    'Accelerate is currently not supported with access points.'
                    . ' Please disable accelerate or do not supply an access'
                    . ' point ARN.');
            }

// Path-style is not supported with access points
            if (!empty($this->config['path_style'])) {
                throw new UnresolvedEndpointException(
                    'Path-style addressing is currently not supported with'
                    . ' access points. Please disable path-style or do not'
                    . ' supply an access point ARN.');
            }

// Custom endpoint is not supported with access points
            if (!is_null($this->config['endpoint'])
                && !$arn instanceof  ObjectLambdaAccessPointArn
            ) {
                throw new UnresolvedEndpointException(
                    'A custom endpoint has been supplied along with an access'
                    . ' point ARN, and these are not compatible with each other.'
                    . ' Please only use one or the other.');
            }

// Dualstack is not supported with object lambda access points
            if ($arn instanceof ObjectLambdaAccessPointArn
                && !empty($this->config['dual_stack'])
            ) {
                throw new UnresolvedEndpointException(
                    'Dualstack is currently not supported with Object Lambda access'
                    . ' points. Please disable dualstack or do not supply an'
                    . ' access point ARN.');
            }
            // Global endpoints do not support cross-region requests
            if ($this->isGlobal($this->region)
                && $this->config['use_arn_region']->isUseArnRegion() == false
                && $arn->getRegion() != $this->region
                && !$arn instanceof MultiRegionAccessPointArn
            ) {
                throw new UnresolvedEndpointException(
                    'Global endpoints do not support cross region requests.'
                    . ' Please enable use_arn_region or do not supply a global region'
                    . ' with a different region in the ARN.');
            }

// Get partitions for ARN and client region
            $arnPart = $this->partitionProvider->getPartition(
                $arn->getRegion(),
                's3'
            );
            $clientPart = $this->partitionProvider->getPartition(
                $this->region,
                's3'
            );

// If client partition not found, try removing pseudo-region qualifiers
            if (!($clientPart->isRegionMatch($this->region, 's3'))) {
                $clientPart = $this->partitionProvider->getPartition(
                    \Aws\strip_fips_pseudo_regions($this->region),
                    's3'
                );
            }
            if (!$arn instanceof MultiRegionAccessPointArn) {
                // Verify that the partition matches for supplied partition and region
                if ($arn->getPartition() !== $clientPart->getName()) {
                    throw new InvalidRegionException('The supplied ARN partition'
                        . " does not match the client's partition.");
                }
                if ($clientPart->getName() !== $arnPart->getName()) {
                    throw new InvalidRegionException('The corresponding partition'
                        . ' for the supplied ARN region does not match the'
                        . " client's partition.");
                }

// Ensure ARN region matches client region unless
                // configured for using ARN region over client region
                $this->validateMatchingRegion($arn);

// Ensure it is not resolved to fips pseudo-region for S3 Outposts
                $this->validateFipsConfigurations($arn);
            }

return $arnPart;
        }

throw new InvalidArnException('Provided ARN was not a valid S3 access'
            . ' point ARN or S3 Outposts access point ARN.');
    }

/**
     * Checks if a region is global
     *
     * @param $region
     * @return bool
     */
    private function isGlobal($region)
    {
        return $region == 's3-external-1' || $region == 'aws-global';
    }
}

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.	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
..	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
Crypto	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
Exception	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
Parser	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
RegionalEndpoint	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
UseArnRegion	dir	-	matisecojj/users	0755	2026-01-15 06:53:56
AmbiguousSuccessParser.php	text/x-php	2.23 KB	matisecojj/users	0644	2026-01-15 06:53:56
ApplyChecksumMiddleware.php	text/x-php	6.77 KB	matisecojj/users	0644	2026-01-15 06:53:56
BatchDelete.php	text/x-php	7.49 KB	matisecojj/users	0644	2026-01-15 06:53:56
BucketEndpointArnMiddleware.php	text/x-php	13.69 KB	matisecojj/users	0644	2026-01-15 06:53:56
BucketEndpointMiddleware.php	text/x-php	3.32 KB	matisecojj/users	0644	2026-01-15 06:53:56
CalculatesChecksumTrait.php	text/x-php	1.96 KB	matisecojj/users	0644	2026-01-15 06:53:56
EndpointRegionHelperTrait.php	text/x-php	3.15 KB	matisecojj/users	0644	2026-01-15 06:53:56
ExpiresParsingMiddleware.php	text/x-php	1.43 KB	matisecojj/users	0644	2026-01-15 06:53:56
GetBucketLocationParser.php	text/x-php	1.29 KB	matisecojj/users	0644	2026-01-15 06:53:56
MultipartCopy.php	text/x-php	8.83 KB	matisecojj/users	0644	2026-01-15 06:53:56
MultipartUploader.php	text/x-php	6.13 KB	matisecojj/users	0644	2026-01-15 06:53:56
MultipartUploadingTrait.php	text/x-php	4.29 KB	matisecojj/users	0644	2026-01-15 06:53:56
ObjectCopier.php	text/x-php	5.82 KB	matisecojj/users	0644	2026-01-15 06:53:56
ObjectUploader.php	text/x-php	5.37 KB	matisecojj/users	0644	2026-01-15 06:53:56
PermanentRedirectMiddleware.php	text/x-php	1.7 KB	matisecojj/users	0644	2026-01-15 06:53:56
PostObject.php	text/x-php	3.83 KB	matisecojj/users	0644	2026-01-15 06:53:56
PostObjectV4.php	text/x-php	5.3 KB	matisecojj/users	0644	2026-01-15 06:53:56
PutObjectUrlMiddleware.php	text/x-php	1.55 KB	matisecojj/users	0644	2026-01-15 06:53:56
RetryableMalformedResponseParser.php	text/x-php	1.42 KB	matisecojj/users	0644	2026-01-15 06:53:56
S3Client.php	text/x-php	59.47 KB	matisecojj/users	0644	2026-01-15 06:53:56
S3ClientInterface.php	text/x-php	14.11 KB	matisecojj/users	0644	2026-01-15 06:53:56
S3ClientTrait.php	text/x-php	10.17 KB	matisecojj/users	0644	2026-01-15 06:53:56
S3EndpointMiddleware.php	text/x-php	11.05 KB	matisecojj/users	0644	2026-01-15 06:53:56
S3MultiRegionClient.php	text/x-php	20.15 KB	matisecojj/users	0644	2026-01-15 06:53:56
S3UriParser.php	text/x-php	4.91 KB	matisecojj/users	0644	2026-01-15 06:53:56
SSECMiddleware.php	text/x-php	2.24 KB	matisecojj/users	0644	2026-01-15 06:53:56
StreamWrapper.php	text/x-php	30.7 KB	matisecojj/users	0644	2026-01-15 06:53:56
Transfer.php	text/x-php	15.32 KB	matisecojj/users	0644	2026-01-15 06:53:56
ValidateResponseChecksumParser.php	text/x-php	5.09 KB	matisecojj/users	0644	2026-01-15 06:53:56