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
09ffac5e6d

This is needed for compatibility with the Storj gateway.

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

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

@@ -732,8 +732,7 @@ class AmazonS3 extends \OC\Files\Storage\Common {
 		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 @@ class AmazonS3 extends \OC\Files\Storage\Common {
 		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)) {