From f6436eceff7f477bbabea50c2d2a636abc44c72b Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Wed, 14 Feb 2018 13:56:30 +0100
Subject: [PATCH] Reset update servers when clearing global cache

Backport of 088a81d4c5f3208e85a0da594b932e4706ccbaf5
See #2538
---
 .../lib/acp/action/CacheClearAction.class.php |  6 +++-
 .../server/PackageUpdateServer.class.php      | 30 ++++++++++++++++++-
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/wcfsetup/install/files/lib/acp/action/CacheClearAction.class.php b/wcfsetup/install/files/lib/acp/action/CacheClearAction.class.php
index d734d51f1a..2061443d86 100644
--- a/wcfsetup/install/files/lib/acp/action/CacheClearAction.class.php
+++ b/wcfsetup/install/files/lib/acp/action/CacheClearAction.class.php
@@ -1,6 +1,7 @@
 <?php
 namespace wcf\acp\action;
 use wcf\action\AbstractAction;
+use wcf\data\package\update\server\PackageUpdateServer;
 use wcf\system\cache\CacheHandler;
 use wcf\system\language\LanguageFactory;
 use wcf\system\request\LinkHandler;
@@ -11,7 +12,7 @@ use wcf\util\HeaderUtil;
  * Clears the cache.
  * 
  * @author	Tim Duesterhus
- * @copyright	2001-2017 WoltLab GmbH
+ * @copyright	2001-2018 WoltLab GmbH
  * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  * @package	WoltLabSuite\Core\Acp\Action
  */
@@ -36,6 +37,9 @@ class CacheClearAction extends AbstractAction {
 		// get package dirs
 		CacheHandler::getInstance()->flushAll();
 		
+		// reset package update servers and the package cache
+		PackageUpdateServer::resetAll();
+		
 		$this->executed();
 		
 		if (!isset($_POST['noRedirect'])) {
diff --git a/wcfsetup/install/files/lib/data/package/update/server/PackageUpdateServer.class.php b/wcfsetup/install/files/lib/data/package/update/server/PackageUpdateServer.class.php
index a94d0c287f..916e366853 100644
--- a/wcfsetup/install/files/lib/data/package/update/server/PackageUpdateServer.class.php
+++ b/wcfsetup/install/files/lib/data/package/update/server/PackageUpdateServer.class.php
@@ -1,6 +1,7 @@
 <?php
 namespace wcf\data\package\update\server;
 use wcf\data\DatabaseObject;
+use wcf\system\cache\builder\PackageUpdateCacheBuilder;
 use wcf\system\io\RemoteFile;
 use wcf\system\Regex;
 use wcf\system\WCF;
@@ -10,7 +11,7 @@ use wcf\util\FileUtil;
  * Represents a package update server.
  * 
  * @author	Alexander Ebert
- * @copyright	2001-2017 WoltLab GmbH
+ * @copyright	2001-2018 WoltLab GmbH
  * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  * @package	WoltLabSuite\Core\Data\Package\Update\Server
  *
@@ -228,4 +229,31 @@ class PackageUpdateServer extends DatabaseObject {
 		
 		return false;
 	}
+	
+	/**
+	 * Resets all update servers into their original state and purges
+	 * the package cache.
+	 */
+	public static function resetAll() {
+		// purge package cache
+		WCF::getDB()->prepareStatement("DELETE FROM wcf".WCF_N."_package_update")->execute();
+		
+		PackageUpdateCacheBuilder::getInstance()->reset();
+		
+		// reset servers into their original state
+		$sql = "UPDATE  wcf".WCF_N."_package_update_server
+			SET     lastUpdateTime = ?,
+				status = ?,
+				errorMessage = ?,
+				apiVersion = ?,
+				metaData = ?";
+		$statement = WCF::getDB()->prepareStatement($sql);
+		$statement->execute([
+			0,
+			'online',
+			'',
+			'2.0',
+			null
+		]);
+	}
 }
-- 
2.20.1