Fix preview generation on object storage (#506)v3.3.4

Fix preview generation on object storage

1 files changed, 12 insertions, 1 deletions

diff --git a/lib/Preview/Office.php b/lib/Preview/Office.php
index a8cf83dd..8e8ff2ea 100644
--- a/lib/Preview/Office.php
+++ b/lib/Preview/Office.php
@@ -63,7 +63,18 @@ abstract class Office extends Provider {
 	 * {@inheritDoc}
 	 */
 	public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
-		$stream = $fileview->fopen($path, 'r');
+		$fileInfo = $fileview->getFileInfo($path);
+		if (!$fileInfo || $fileInfo->getSize() === 0) {
+			return false;
+		}
+
+		$useTempFile = $fileInfo->isEncrypted() || !$fileInfo->getStorage()->isLocal();
+		if ($useTempFile) {
+			$fileName = $fileview->toTmpFile($path);
+			$stream = fopen($fileName, 'r');
+		} else {
+			$stream = $fileview->fopen($path, 'r');
+		}
 
 		$client = $this->clientService->newClient();
 		$options = ['timeout' => 10];