1 files changed, 17 insertions, 0 deletions
diff --git a/lib/helper.php b/lib/helper.php
index be4e4e52677..91b22e48f89 100644
--- a/lib/helper.php
+++ b/lib/helper.php
@@ -758,4 +758,21 @@ class OC_Helper {
 		}
 		return $str;
 	}
+
+    /**
+     * @brief calculates the maximum upload size respecting system settings, free space and user quota
+     *
+     * @param $dir the current folder where the user currently operates
+     * @return number of bytes representing
+     */
+    public static function maxUploadFilesize($dir) {
+        $upload_max_filesize = OCP\Util::computerFileSize(ini_get('upload_max_filesize'));
+        $post_max_size = OCP\Util::computerFileSize(ini_get('post_max_size'));
+        $maxUploadFilesize = min($upload_max_filesize, $post_max_size);
+
+        $freeSpace = OC_Filesystem::free_space($dir);
+        $freeSpace = max($freeSpace, 0);
+
+        return min($maxUploadFilesize, $freeSpace);
+    }
 }