From: Tim Düsterhus <duesterhus@woltlab.com>
Date: Tue, 2 Feb 2021 10:31:21 +0000 (+0100)
Subject: Make 5.4_session_3_migrate_session.php idempotent
X-Git-Tag: 5.4.0_Alpha_1~327
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ea52aa0856fab23d08b4620b68631bc154639eab;p=GitHub%2FWoltLab%2FWCF.git

Make 5.4_session_3_migrate_session.php idempotent

Fixes #3923
---

diff --git a/wcfsetup/install/files/acp/update_com.woltlab.wcf_5.4_session_3_migrate_session.php b/wcfsetup/install/files/acp/update_com.woltlab.wcf_5.4_session_3_migrate_session.php
index a50a88ce15..a828489a90 100644
--- a/wcfsetup/install/files/acp/update_com.woltlab.wcf_5.4_session_3_migrate_session.php
+++ b/wcfsetup/install/files/acp/update_com.woltlab.wcf_5.4_session_3_migrate_session.php
@@ -12,6 +12,19 @@
 use wcf\system\session\SessionHandler;
 use wcf\system\WCF;
 
+$sql = "SELECT  userID
+        FROM    wcf" . WCF_N . "_user_session
+        WHERE   sessionID = ?";
+$statement = WCF::getDB()->prepareStatement($sql);
+$statement->execute([
+    SessionHandler::getInstance()->sessionID,
+]);
+
+// Check if a matching session already exists.
+if ($statement->fetchSingleColumn() == SessionHandler::getInstance()->userID) {
+    return;
+}
+
 $sql = "INSERT INTO wcf" . WCF_N . "_user_session
                     (sessionID, userID, userAgent, ipAddress, lastActivityTime, sessionVariables)
         VALUES      (?, ?, ?, ?, ?, ?)";