AmazonS3: allow not implemented versioning

In case the S3 implementation does not implement versioning, set it to
false. Versioning was introduced in Nexcloud in commit
09ffac5

This is needed for compatibility with the Storj gateway.

Signed-off-by: Erik van Velzen <erik@evanv.nl>

Author: Erikvv

apps/files_external/lib/Lib/Storage/AmazonS3.php

@@ -732,8 +732,7 @@ public function versioningEnabled(): bool {
 		if ($this->versioningEnabled === null) {
 			$cached = $this->memCache->get('versioning-enabled::' . $this->getBucket());
 			if ($cached === null) {
-				$result = $this->getConnection()->getBucketVersioning(['Bucket' => $this->getBucket()]);
-				$this->versioningEnabled = $result->get('Status') === 'Enabled';
+				$this->versioningEnabled = $this->getVersioningStatusFromBucket();
 				$this->memCache->set('versioning-enabled::' . $this->getBucket(), $this->versioningEnabled, 60);
 			} else {
 				$this->versioningEnabled = $cached;
@@ -742,6 +741,19 @@ public function versioningEnabled(): bool {
 		return $this->versioningEnabled;
 	}
 
+	protected function getVersioningStatusFromBucket(): bool {
+		try {
+			$result = $this->getConnection()->getBucketVersioning(['Bucket' => $this->getBucket()]);
+			return $result->get('Status') === 'Enabled';
+		} catch (S3Exception $s3Exception) {
+			// This is needed for compatibility with Storj gateway which does not support versioning yet
+			if ($s3Exception->getAwsErrorCode() === 'NotImplemented') {
+				return false;
+			}
+			throw $s3Exception;
+		}
+	}
+
 	public function hasUpdated($path, $time) {
 		// for files we can get the proper mtime
 		if ($path !== '' && $object = $this->headObject($path)) {