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-rw-r--r--lib/private/legacy/user.php13
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/private/legacy/user.php b/lib/private/legacy/user.php
index 0a52be7565d..661242a659a 100644
--- a/lib/private/legacy/user.php
+++ b/lib/private/legacy/user.php
@@ -187,7 +187,18 @@ class OC_User {
if ($uid) {
if (self::getUser() !== $uid) {
self::setUserId($uid);
- self::setDisplayName($uid);
+ $setUidAsDisplayName = true;
+ if($backend instanceof \OCP\UserInterface
+ && $backend->implementsActions(OC_User_Backend::GET_DISPLAYNAME)) {
+
+ $backendDisplayName = $backend->getDisplayName($uid);
+ if(is_string($backendDisplayName) && trim($backendDisplayName) !== '') {
+ $setUidAsDisplayName = false;
+ }
+ }
+ if($setUidAsDisplayName) {
+ self::setDisplayName($uid);
+ }
self::getUserSession()->setLoginName($uid);
$request = OC::$server->getRequest();
self::getUserSession()->createSessionToken($request, $uid, $uid);