3 files changed, 56 insertions, 19 deletions

diff --git a/lib/private/Files/ObjectStore/ObjectStoreStorage.php b/lib/private/Files/ObjectStore/ObjectStoreStorage.php
index 16ef4e7de63..ebe87399ab4 100644
--- a/lib/private/Files/ObjectStore/ObjectStoreStorage.php
+++ b/lib/private/Files/ObjectStore/ObjectStoreStorage.php
@@ -22,6 +22,7 @@ use OCP\Files\FileInfo;
 use OCP\Files\GenericFileException;
 use OCP\Files\NotFoundException;
 use OCP\Files\ObjectStore\IObjectStore;
+use OCP\Files\ObjectStore\IObjectStoreMetaData;
 use OCP\Files\ObjectStore\IObjectStoreMultiPartUpload;
 use OCP\Files\Storage\IChunkedFileWrite;
 use OCP\Files\Storage\IStorage;
@@ -479,6 +480,11 @@ class ObjectStoreStorage extends \OC\Files\Storage\Common implements IChunkedFil
 
 		$mimetypeDetector = \OC::$server->getMimeTypeDetector();
 		$mimetype = $mimetypeDetector->detectPath($path);
+		$metadata = [
+			'mimetype' => $mimetype,
+			'original-storage' => $this->getId(),
+			'original-path' => $path,
+		];
 
 		$stat['mimetype'] = $mimetype;
 		$stat['etag'] = $this->getETag($path);
@@ -507,13 +513,21 @@ class ObjectStoreStorage extends \OC\Files\Storage\Common implements IChunkedFil
 					]);
 					$size = $writtenSize;
 				});
-				$this->objectStore->writeObject($urn, $countStream, $mimetype);
+				if ($this->objectStore instanceof IObjectStoreMetaData) {
+					$this->objectStore->writeObjectWithMetaData($urn, $countStream, $metadata);
+				} else {
+					$this->objectStore->writeObject($urn, $countStream, $metadata['mimetype']);
+				}
 				if (is_resource($countStream)) {
 					fclose($countStream);
 				}
 				$stat['size'] = $size;
 			} else {
-				$this->objectStore->writeObject($urn, $stream, $mimetype);
+				if ($this->objectStore instanceof IObjectStoreMetaData) {
+					$this->objectStore->writeObjectWithMetaData($urn, $stream, $metadata);
+				} else {
+					$this->objectStore->writeObject($urn, $stream, $metadata['mimetype']);
+				}
 				if (is_resource($stream)) {
 					fclose($stream);
 				}
diff --git a/lib/private/Files/ObjectStore/S3.php b/lib/private/Files/ObjectStore/S3.php
index e970fb6ac14..23c061db174 100644
--- a/lib/private/Files/ObjectStore/S3.php
+++ b/lib/private/Files/ObjectStore/S3.php
@@ -95,6 +95,16 @@ class S3 implements IObjectStore, IObjectStoreMultiPartUpload, IObjectStoreMetaD
 		]);
 	}
 
+	private function parseS3Metadata(array $metadata): array {
+		$result = [];
+		foreach ($metadata as $key => $value) {
+			if (str_starts_with($key, 'x-amz-meta-')) {
+				$result[substr($key, strlen('x-amz-meta-'))] = $value;
+			}
+		}
+		return $result;
+	}
+
 	public function getObjectMetaData(string $urn): array {
 		$object = $this->getConnection()->headObject([
 			'Bucket' => $this->bucket,
@@ -104,7 +114,7 @@ class S3 implements IObjectStore, IObjectStoreMultiPartUpload, IObjectStoreMetaD
 			'mtime' => $object['LastModified'],
 			'etag' => trim($object['ETag'], '"'),
 			'size' => (int)($object['Size'] ?? $object['ContentLength']),
-		];
+		] + $this->parseS3Metadata($object['Metadata'] ?? []);
 	}
 
 	public function listObjects(string $prefix = ''): \Iterator {
diff --git a/lib/private/Files/ObjectStore/S3ObjectTrait.php b/lib/private/Files/ObjectStore/S3ObjectTrait.php
index 9d7cfa644e6..61e8158b863 100644
--- a/lib/private/Files/ObjectStore/S3ObjectTrait.php
+++ b/lib/private/Files/ObjectStore/S3ObjectTrait.php
@@ -77,22 +77,32 @@ trait S3ObjectTrait {
 		return $fh;
 	}
 
+	private function buildS3Metadata(array $metadata): array {
+		$result = [];
+		foreach ($metadata as $key => $value) {
+			$result['x-amz-meta-' . $key] = $value;
+		}
+		return $result;
+	}
 
 	/**
 	 * Single object put helper
 	 *
 	 * @param string $urn the unified resource name used to identify the object
 	 * @param StreamInterface $stream stream with the data to write
-	 * @param string|null $mimetype the mimetype to set for the remove object @since 22.0.0
+	 * @param array $metaData the metadata to set for the object
 	 * @throws \Exception when something goes wrong, message will be logged
 	 */
-	protected function writeSingle(string $urn, StreamInterface $stream, ?string $mimetype = null): void {
+	protected function writeSingle(string $urn, StreamInterface $stream, array $metaData): void {
+		$mimetype = $metaData['mimetype'] ?? null;
+		unset($metaData['mimetype']);
 		$this->getConnection()->putObject([
 			'Bucket' => $this->bucket,
 			'Key' => $urn,
 			'Body' => $stream,
 			'ACL' => 'private',
 			'ContentType' => $mimetype,
+			'Metadata' => $this->buildS3Metadata($metaData),
 			'StorageClass' => $this->storageClass,
 		] + $this->getSSECParameters());
 	}
@@ -103,10 +113,12 @@ trait S3ObjectTrait {
 	 *
 	 * @param string $urn the unified resource name used to identify the object
 	 * @param StreamInterface $stream stream with the data to write
-	 * @param string|null $mimetype the mimetype to set for the remove object
+	 * @param array $metaData the metadata to set for the object
 	 * @throws \Exception when something goes wrong, message will be logged
 	 */
-	protected function writeMultiPart(string $urn, StreamInterface $stream, ?string $mimetype = null): void {
+	protected function writeMultiPart(string $urn, StreamInterface $stream, array $metaData): void {
+		$mimetype = $metaData['mimetype'] ?? null;
+		unset($metaData['mimetype']);
 		$uploader = new MultipartUploader($this->getConnection(), $stream, [
 			'bucket' => $this->bucket,
 			'concurrency' => $this->concurrency,
@@ -114,6 +126,7 @@ trait S3ObjectTrait {
 			'part_size' => $this->uploadPartSize,
 			'params' => [
 				'ContentType' => $mimetype,
+				'Metadata' => $this->buildS3Metadata($metaData),
 				'StorageClass' => $this->storageClass,
 			] + $this->getSSECParameters(),
 		]);
@@ -131,15 +144,15 @@ trait S3ObjectTrait {
 		}
 	}
 
-
-	/**
-	 * @param string $urn the unified resource name used to identify the object
-	 * @param resource $stream stream with the data to write
-	 * @param string|null $mimetype the mimetype to set for the remove object @since 22.0.0
-	 * @throws \Exception when something goes wrong, message will be logged
-	 * @since 7.0.0
-	 */
 	public function writeObject($urn, $stream, ?string $mimetype = null) {
+		$metaData = [];
+		if ($mimetype) {
+			$metaData['mimetype'] = $mimetype;
+		}
+		$this->writeObjectWithMetaData($urn, $stream, $metaData);
+	}
+
+	public function writeObjectWithMetaData(string $urn, $stream, array $metaData): void {
 		$canSeek = fseek($stream, 0, SEEK_CUR) === 0;
 		$psrStream = Utils::streamFor($stream);
 
@@ -154,16 +167,16 @@ trait S3ObjectTrait {
 			$buffer->seek(0);
 			if ($buffer->getSize() < $this->putSizeLimit) {
 				// buffer is fully seekable, so use it directly for the small upload
-				$this->writeSingle($urn, $buffer, $mimetype);
+				$this->writeSingle($urn, $buffer, $metaData);
 			} else {
 				$loadStream = new Psr7\AppendStream([$buffer, $psrStream]);
-				$this->writeMultiPart($urn, $loadStream, $mimetype);
+				$this->writeMultiPart($urn, $loadStream, $metaData);
 			}
 		} else {
 			if ($size < $this->putSizeLimit) {
-				$this->writeSingle($urn, $psrStream, $mimetype);
+				$this->writeSingle($urn, $psrStream, $metaData);
 			} else {
-				$this->writeMultiPart($urn, $psrStream, $mimetype);
+				$this->writeMultiPart($urn, $psrStream, $metaData);
 			}
 		}
 		$psrStream->close();