diff options
| -rw-r--r-- | lib/private/Files/Type/Detection.php | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/private/Files/Type/Detection.php b/lib/private/Files/Type/Detection.php index cebbccd6ad6..530020fe4b9 100644 --- a/lib/private/Files/Type/Detection.php +++ b/lib/private/Files/Type/Detection.php @@ -203,9 +203,12 @@ class Detection implements IMimeTypeDetector { $fileName = preg_replace('!((\.v\d+)|((\.ocTransferId\d+)?\.part))$!', '', $fileName); //try to guess the type by the file extension - $extension = strtolower(strrchr($fileName, '.')); - $extension = substr($extension, 1); //remove leading . - return $this->mimetypes[$extension][0] ?? 'application/octet-stream'; + $extension = strrchr($fileName, '.'); + if ($extension !== false) { + $extension = strtolower($extension); + $extension = substr($extension, 1); //remove leading . + return $this->mimetypes[$extension][0] ?? 'application/octet-stream'; + } } return 'application/octet-stream'; |