throwing correct error message whenever a user tries to insert a file from ocis into moodle that is bigger than the configured max size.

Author: nirajacharya2

lang/en/repository_ocis.php

@@ -62,3 +62,4 @@
 $string['webfinger_error'] = 'Could not get user-information from webfinger service.';
 $string['personal_drive'] = 'Personal';
 $string['shares_drive'] = 'Shares';
+$string['exceed_maxbytes_error'] = 'File exceeds maximum uploaded file size limit';

lib.php

@@ -379,10 +379,21 @@ public static function get_instance_option_names() {
      * @throws moodle_exception
      */
     public function get_file($fileid, $filename = ''): array {
+        global $CFG;
+
         $localpath = $this->prepare_file($fileid);
         try {
             $file = $this->getocismanager()->get_ocis_client()->getResourceById($fileid);
-            file_put_contents($localpath, $file->getContentStream());
+            if ($file->getSize() > (int)$CFG->maxbytes && (int)$CFG->maxbytes !== 0) {
+                throw new moodle_exception(
+                    'exceed_maxbytes_error',
+                    'repository_ocis',
+                    '',
+                    null,
+                );
+            } else {
+                file_put_contents($localpath, $file->getContentStream());
+            }
         } catch (HttpException $e) {
             throw new moodle_exception(
                 'could_not_connect_error',