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<?php declare(strict_types=1); namespace League\Flysystem\AwsS3V3; use Aws\Api\DateTimeResult; use Aws\S3\S3ClientInterface; use DateTimeInterface; use Generator; use League\Flysystem\ChecksumAlgoIsNotSupported; use League\Flysystem\ChecksumProvider; use League\Flysystem\Config; use League\Flysystem\DirectoryAttributes; use League\Flysystem\FileAttributes; use League\Flysystem\FilesystemAdapter; use League\Flysystem\FilesystemOperationFailed; use League\Flysystem\PathPrefixer; use League\Flysystem\StorageAttributes; use League\Flysystem\UnableToCheckDirectoryExistence; use League\Flysystem\UnableToCheckFileExistence; use League\Flysystem\UnableToCopyFile; use League\Flysystem\UnableToDeleteDirectory; use League\Flysystem\UnableToDeleteFile; use League\Flysystem\UnableToGeneratePublicUrl; use League\Flysystem\UnableToGenerateTemporaryUrl; use League\Flysystem\UnableToMoveFile; use League\Flysystem\UnableToProvideChecksum; use League\Flysystem\UnableToReadFile; use League\Flysystem\UnableToRetrieveMetadata; use League\Flysystem\UnableToSetVisibility; use League\Flysystem\UnableToWriteFile; use League\Flysystem\UrlGeneration\PublicUrlGenerator; use League\Flysystem\UrlGeneration\TemporaryUrlGenerator; use League\Flysystem\Visibility; use League\MimeTypeDetection\FinfoMimeTypeDetector; use League\MimeTypeDetection\MimeTypeDetector; use Psr\Http\Message\StreamInterface; use Throwable; use function trim; class AwsS3V3Adapter implements FilesystemAdapter, PublicUrlGenerator, ChecksumProvider, TemporaryUrlGenerator { /** * @var string[] */ public const AVAILABLE_OPTIONS = [ 'ACL', 'CacheControl', 'ContentDisposition', 'ContentEncoding', 'ContentLength', 'ContentType', 'Expires', 'GrantFullControl', 'GrantRead', 'GrantReadACP', 'GrantWriteACP', 'Metadata', 'MetadataDirective', 'RequestPayer', 'SSECustomerAlgorithm', 'SSECustomerKey', 'SSECustomerKeyMD5', 'SSEKMSKeyId', 'ServerSideEncryption', 'StorageClass', 'Tagging', 'WebsiteRedirectLocation', 'ChecksumAlgorithm', 'CopySourceSSECustomerAlgorithm', 'CopySourceSSECustomerKey', 'CopySourceSSECustomerKeyMD5', ]; /** * @var string[] */ public const MUP_AVAILABLE_OPTIONS = [ 'add_content_md5', 'before_upload', 'concurrency', 'mup_threshold', 'params', 'part_size', ]; /** * @var string[] */ private const EXTRA_METADATA_FIELDS = [ 'Metadata', 'StorageClass', 'ETag', 'VersionId', ]; private PathPrefixer $prefixer; private VisibilityConverter $visibility; private MimeTypeDetector $mimeTypeDetector; public function __construct( private S3ClientInterface $client, private string $bucket, string $prefix = '', ?VisibilityConverter $visibility = null, ?MimeTypeDetector $mimeTypeDetector = null, private array $options = [], private bool $streamReads = true, private array $forwardedOptions = self::AVAILABLE_OPTIONS, private array $metadataFields = self::EXTRA_METADATA_FIELDS, private array $multipartUploadOptions = self::MUP_AVAILABLE_OPTIONS, ) { $this->prefixer = new PathPrefixer($prefix); $this->visibility = $visibility ?? new PortableVisibilityConverter(); $this->mimeTypeDetector = $mimeTypeDetector ?? new FinfoMimeTypeDetector(); } public function fileExists(string $path): bool { try { return $this->client->doesObjectExistV2($this->bucket, $this->prefixer->prefixPath($path), false, $this->options); } catch (Throwable $exception) { throw UnableToCheckFileExistence::forLocation($path, $exception); } } public function directoryExists(string $path): bool { try { $prefix = $this->prefixer->prefixDirectoryPath($path); $options = ['Bucket' => $this->bucket, 'Prefix' => $prefix, 'MaxKeys' => 1, 'Delimiter' => '/']; $command = $this->client->getCommand('ListObjectsV2', $options); $result = $this->client->execute($command); return $result->hasKey('Contents') || $result->hasKey('CommonPrefixes'); } catch (Throwable $exception) { throw UnableToCheckDirectoryExistence::forLocation($path, $exception); } } public function write(string $path, string $contents, Config $config): void { $this->upload($path, $contents, $config); } /** * @param string $path * @param string|resource $body * @param Config $config */ private function upload(string $path, $body, Config $config): void { $key = $this->prefixer->prefixPath($path); $options = $this->createOptionsFromConfig($config); $acl = $options['params']['ACL'] ?? $this->determineAcl($config); $shouldDetermineMimetype = ! array_key_exists('ContentType', $options['params']); if ($shouldDetermineMimetype && $mimeType = $this->mimeTypeDetector->detectMimeType($key, $body)) { $options['params']['ContentType'] = $mimeType; } try { $this->client->upload($this->bucket, $key, $body, $acl, $options); } catch (Throwable $exception) { throw UnableToWriteFile::atLocation($path, $exception->getMessage(), $exception); } } private function determineAcl(Config $config): string { $visibility = (string) $config->get(Config::OPTION_VISIBILITY, Visibility::PRIVATE); return $this->visibility->visibilityToAcl($visibility); } private function createOptionsFromConfig(Config $config): array { $config = $config->withDefaults($this->options); $options = ['params' => []]; if ($mimetype = $config->get('mimetype')) { $options['params']['ContentType'] = $mimetype; } foreach ($this->forwardedOptions as $option) { $value = $config->get($option, '__NOT_SET__'); if ($value !== '__NOT_SET__') { $options['params'][$option] = $value; } } foreach ($this->multipartUploadOptions as $option) { $value = $config->get($option, '__NOT_SET__'); if ($value !== '__NOT_SET__') { $options[$option] = $value; } } return $options; } public function writeStream(string $path, $contents, Config $config): void { $this->upload($path, $contents, $config); } public function read(string $path): string { $body = $this->readObject($path, false); return (string) $body->getContents(); } public function readStream(string $path) { /** @var resource $resource */ $resource = $this->readObject($path, true)->detach(); return $resource; } public function delete(string $path): void { $arguments = ['Bucket' => $this->bucket, 'Key' => $this->prefixer->prefixPath($path)]; $command = $this->client->getCommand('DeleteObject', $arguments); try { $this->client->execute($command); } catch (Throwable $exception) { throw UnableToDeleteFile::atLocation($path, '', $exception); } } public function deleteDirectory(string $path): void { $prefix = $this->prefixer->prefixPath($path); $prefix = ltrim(rtrim($prefix, '/') . '/', '/'); try { $this->client->deleteMatchingObjects($this->bucket, $prefix); } catch (Throwable $exception) { throw UnableToDeleteDirectory::atLocation($path, '', $exception); } } public function createDirectory(string $path, Config $config): void { $defaultVisibility = $config->get(Config::OPTION_DIRECTORY_VISIBILITY, $this->visibility->defaultForDirectories()); $config = $config->withDefaults([Config::OPTION_VISIBILITY => $defaultVisibility]); $this->upload(rtrim($path, '/') . '/', '', $config); } public function setVisibility(string $path, string $visibility): void { $arguments = [ 'Bucket' => $this->bucket, 'Key' => $this->prefixer->prefixPath($path), 'ACL' => $this->visibility->visibilityToAcl($visibility), ]; $command = $this->client->getCommand('PutObjectAcl', $arguments); try { $this->client->execute($command); } catch (Throwable $exception) { throw UnableToSetVisibility::atLocation($path, '', $exception); } } public function visibility(string $path): FileAttributes { $arguments = ['Bucket' => $this->bucket, 'Key' => $this->prefixer->prefixPath($path)]; $command = $this->client->getCommand('GetObjectAcl', $arguments); try { $result = $this->client->execute($command); } catch (Throwable $exception) { throw UnableToRetrieveMetadata::visibility($path, '', $exception); } $visibility = $this->visibility->aclToVisibility((array) $result->get('Grants')); return new FileAttributes($path, null, $visibility); } private function fetchFileMetadata(string $path, string $type): FileAttributes { $arguments = ['Bucket' => $this->bucket, 'Key' => $this->prefixer->prefixPath($path)]; $command = $this->client->getCommand('HeadObject', $arguments); try { $result = $this->client->execute($command); } catch (Throwable $exception) { throw UnableToRetrieveMetadata::create($path, $type, '', $exception); } $attributes = $this->mapS3ObjectMetadata($result->toArray(), $path); if ( ! $attributes instanceof FileAttributes) { throw UnableToRetrieveMetadata::create($path, $type, ''); } return $attributes; } private function mapS3ObjectMetadata(array $metadata, string $path): StorageAttributes { if (substr($path, -1) === '/') { return new DirectoryAttributes(rtrim($path, '/')); } $mimetype = $metadata['ContentType'] ?? null; $fileSize = $metadata['ContentLength'] ?? $metadata['Size'] ?? null; $fileSize = $fileSize === null ? null : (int) $fileSize; $dateTime = $metadata['LastModified'] ?? null; $lastModified = $dateTime instanceof DateTimeResult ? $dateTime->getTimeStamp() : null; return new FileAttributes( $path, $fileSize, null, $lastModified, $mimetype, $this->extractExtraMetadata($metadata) ); } private function extractExtraMetadata(array $metadata): array { $extracted = []; foreach ($this->metadataFields as $field) { if (isset($metadata[$field]) && $metadata[$field] !== '') { $extracted[$field] = $metadata[$field]; } } return $extracted; } public function mimeType(string $path): FileAttributes { $attributes = $this->fetchFileMetadata($path, FileAttributes::ATTRIBUTE_MIME_TYPE); if ($attributes->mimeType() === null) { throw UnableToRetrieveMetadata::mimeType($path); } return $attributes; } public function lastModified(string $path): FileAttributes { $attributes = $this->fetchFileMetadata($path, FileAttributes::ATTRIBUTE_LAST_MODIFIED); if ($attributes->lastModified() === null) { throw UnableToRetrieveMetadata::lastModified($path); } return $attributes; } public function fileSize(string $path): FileAttributes { $attributes = $this->fetchFileMetadata($path, FileAttributes::ATTRIBUTE_FILE_SIZE); if ($attributes->fileSize() === null) { throw UnableToRetrieveMetadata::fileSize($path); } return $attributes; } public function listContents(string $path, bool $deep): iterable { $prefix = trim($this->prefixer->prefixPath($path), '/'); $prefix = empty($prefix) ? '' : $prefix . '/'; $options = ['Bucket' => $this->bucket, 'Prefix' => $prefix]; if ($deep === false) { $options['Delimiter'] = '/'; } $listing = $this->retrievePaginatedListing($options); foreach ($listing as $item) { $key = $item['Key'] ?? $item['Prefix']; if ($key === $prefix) { continue; } yield $this->mapS3ObjectMetadata($item, $this->prefixer->stripPrefix($key)); } } private function retrievePaginatedListing(array $options): Generator { $resultPaginator = $this->client->getPaginator('ListObjectsV2', $options + $this->options); foreach ($resultPaginator as $result) { yield from ($result->get('CommonPrefixes') ?? []); yield from ($result->get('Contents') ?? []); } } public function move(string $source, string $destination, Config $config): void { if ($source === $destination) { return; } try { $this->copy($source, $destination, $config); $this->delete($source); } catch (FilesystemOperationFailed $exception) { throw UnableToMoveFile::fromLocationTo($source, $destination, $exception); } } public function copy(string $source, string $destination, Config $config): void { if ($source === $destination) { return; } try { $visibility = $config->get(Config::OPTION_VISIBILITY); if ($visibility === null && $config->get(Config::OPTION_RETAIN_VISIBILITY, true)) { $visibility = $this->visibility($source)->visibility(); } } catch (Throwable $exception) { throw UnableToCopyFile::fromLocationTo( $source, $destination, $exception ); } $options = $this->createOptionsFromConfig($config); $options['MetadataDirective'] = $config->get('MetadataDirective', 'COPY'); try { $this->client->copy( $this->bucket, $this->prefixer->prefixPath($source), $this->bucket, $this->prefixer->prefixPath($destination), $this->visibility->visibilityToAcl($visibility ?: 'private'), $options, ); } catch (Throwable $exception) { throw UnableToCopyFile::fromLocationTo($source, $destination, $exception); } } private function readObject(string $path, bool $wantsStream): StreamInterface { $options = ['Bucket' => $this->bucket, 'Key' => $this->prefixer->prefixPath($path)]; if ($wantsStream && $this->streamReads && ! isset($this->options['@http']['stream'])) { $options['@http']['stream'] = true; } $command = $this->client->getCommand('GetObject', $options + $this->options); try { return $this->client->execute($command)->get('Body'); } catch (Throwable $exception) { throw UnableToReadFile::fromLocation($path, '', $exception); } } public function publicUrl(string $path, Config $config): string { $location = $this->prefixer->prefixPath($path); try { return $this->client->getObjectUrl($this->bucket, $location); } catch (Throwable $exception) { throw UnableToGeneratePublicUrl::dueToError($path, $exception); } } public function checksum(string $path, Config $config): string { $algo = $config->get('checksum_algo', 'etag'); if ($algo !== 'etag') { throw new ChecksumAlgoIsNotSupported(); } try { $metadata = $this->fetchFileMetadata($path, 'checksum')->extraMetadata(); } catch (UnableToRetrieveMetadata $exception) { throw new UnableToProvideChecksum($exception->reason(), $path, $exception); } if ( ! isset($metadata['ETag'])) { throw new UnableToProvideChecksum('ETag header not available.', $path); } return trim($metadata['ETag'], '"'); } public function temporaryUrl(string $path, DateTimeInterface $expiresAt, Config $config): string { try { $options = $config->get('get_object_options', []); $command = $this->client->getCommand('GetObject', [ 'Bucket' => $this->bucket, 'Key' => $this->prefixer->prefixPath($path), ] + $options); $presignedRequestOptions = $config->get('presigned_request_options', []); $request = $this->client->createPresignedRequest($command, $expiresAt, $presignedRequestOptions); return (string) $request->getUri(); } catch (Throwable $exception) { throw UnableToGenerateTemporaryUrl::dueToError($path, $exception); } } }
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