From b1b31d7992934f29fa3eaf3f1f84090390d72577 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim=20D=C3=BCsterhus?= <duesterhus@woltlab.com>
Date: Wed, 30 Jun 2021 12:57:11 +0200
Subject: [PATCH] Handle Facebook not providing an email address

Fixes #4241
---
 .../install/files/lib/action/FacebookAuthAction.class.php     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/action/FacebookAuthAction.class.php b/wcfsetup/install/files/lib/action/FacebookAuthAction.class.php
index 901a855584..c5276b3846 100644
--- a/wcfsetup/install/files/lib/action/FacebookAuthAction.class.php
+++ b/wcfsetup/install/files/lib/action/FacebookAuthAction.class.php
@@ -106,7 +106,9 @@ final class FacebookAuthAction extends AbstractOauth2Action
 
         $parsed['__id'] = $parsed['id'];
         $parsed['__username'] = $parsed['name'];
-        $parsed['__email'] = $parsed['email'];
+        if (!empty($parsed['email'])) {
+            $parsed['__email'] = $parsed['email'];
+        }
         $parsed['accessToken'] = $accessToken;
 
         return new OauthUser($parsed);
-- 
2.20.1