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Direktori : /home2/selectio/www/innerstore/vendor/aws/aws-sdk-php/src/S3/ |
Current File : /home2/selectio/www/innerstore/vendor/aws/aws-sdk-php/src/S3/ValidateResponseChecksumParser.php |
<?php namespace Aws\S3; use Aws\Api\Parser\AbstractParser; use Aws\Api\Service; use Aws\Api\StructureShape; use Aws\CommandInterface; use Aws\S3\Exception\S3Exception; use Psr\Http\Message\ResponseInterface; use Psr\Http\Message\StreamInterface; /** * @internal Decorates a parser for the S3 service to validate the response checksum. */ class ValidateResponseChecksumParser extends AbstractParser { use CalculatesChecksumTrait; /** * @param callable $parser Parser to wrap. */ public function __construct(callable $parser, Service $api) { $this->api = $api; $this->parser = $parser; } public function __invoke( CommandInterface $command, ResponseInterface $response ) { $fn = $this->parser; $result = $fn($command, $response); //Skip this middleware if the operation doesn't have an httpChecksum $op = $this->api->getOperation($command->getName()); $checksumInfo = isset($op['httpChecksum']) ? $op['httpChecksum'] : []; if (empty($checksumInfo)) { return $result; } //Skip this middleware if the operation doesn't send back a checksum, or the user doesn't opt in $checksumModeEnabledMember = isset($checksumInfo['requestValidationModeMember']) ? $checksumInfo['requestValidationModeMember'] : ""; $checksumModeEnabled = isset($command[$checksumModeEnabledMember]) ? $command[$checksumModeEnabledMember] : ""; $responseAlgorithms = isset($checksumInfo['responseAlgorithms']) ? $checksumInfo['responseAlgorithms'] : []; if (empty($responseAlgorithms) || strtolower($checksumModeEnabled) !== "enabled" ) { return $result; } if (extension_loaded('awscrt')) { $checksumPriority = ['CRC32C', 'CRC32', 'SHA1', 'SHA256']; } else { $checksumPriority = ['CRC32', 'SHA1', 'SHA256']; } $checksumsToCheck = array_intersect($responseAlgorithms, $checksumPriority); $checksumValidationInfo = $this->validateChecksum($checksumsToCheck, $response); if ($checksumValidationInfo['status'] == "SUCCEEDED") { $result['ChecksumValidated'] = $checksumValidationInfo['checksum']; } else if ($checksumValidationInfo['status'] == "FAILED"){ //Ignore failed validations on GetObject if it's a multipart get which returned a full multipart object if ($command->getName() == "GetObject" && !empty($checksumValidationInfo['checksumHeaderValue']) ) { $headerValue = $checksumValidationInfo['checksumHeaderValue']; $lastDashPos = strrpos($headerValue, '-'); $endOfChecksum = substr($headerValue, $lastDashPos + 1); if (is_numeric($endOfChecksum) && intval($endOfChecksum) > 1 && intval($endOfChecksum) < 10000) { return $result; } } throw new S3Exception( "Calculated response checksum did not match the expected value", $command ); } return $result; } public function parseMemberFromStream( StreamInterface $stream, StructureShape $member, $response ) { return $this->parser->parseMemberFromStream($stream, $member, $response); } /** * @param $checksumPriority * @param ResponseInterface $response */ public function validateChecksum($checksumPriority, ResponseInterface $response) { $checksumToValidate = $this->chooseChecksumHeaderToValidate( $checksumPriority, $response ); $validationStatus = "SKIPPED"; $checksumHeaderValue = null; if (!empty($checksumToValidate)) { $checksumHeaderValue = $response->getHeader( 'x-amz-checksum-' . $checksumToValidate ); if (isset($checksumHeaderValue)) { $checksumHeaderValue = $checksumHeaderValue[0]; $calculatedChecksumValue = $this->getEncodedValue( $checksumToValidate, $response->getBody() ); $validationStatus = $checksumHeaderValue == $calculatedChecksumValue ? "SUCCEEDED" : "FAILED"; } } return [ "status" => $validationStatus, "checksum" => $checksumToValidate, "checksumHeaderValue" => $checksumHeaderValue, ]; } /** * @param $checksumPriority * @param ResponseInterface $response */ public function chooseChecksumHeaderToValidate( $checksumPriority, ResponseInterface $response ) { foreach ($checksumPriority as $checksum) { $checksumHeader = 'x-amz-checksum-' . $checksum; if ($response->hasHeader($checksumHeader)) { return $checksum; } } return null; } }