From 93f0399a92962470be6a8d29ee1bebe5de594ee4 Mon Sep 17 00:00:00 2001
From: Joas Schilling <coding@schilljs.com>
Date: Wed, 16 Aug 2023 16:01:00 +0200
Subject: [PATCH] fix(memcache): Fix comparison of Memcache configs to classes

Signed-off-by: Joas Schilling <coding@schilljs.com>
---
 .../lib/Controller/CheckSetupController.php      |  3 ++-
 lib/private/Memcache/Factory.php                 | 16 +++++++++-------
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/apps/settings/lib/Controller/CheckSetupController.php b/apps/settings/lib/Controller/CheckSetupController.php
index 4a1913cedfe23..0353862bab0ba 100644
--- a/apps/settings/lib/Controller/CheckSetupController.php
+++ b/apps/settings/lib/Controller/CheckSetupController.php
@@ -370,7 +370,8 @@ private function forwardedForHeadersWorking(): bool {
 	 * @return bool
 	 */
 	private function isCorrectMemcachedPHPModuleInstalled() {
-		if ($this->config->getSystemValue('memcache.distributed', null) !== '\OC\Memcache\Memcached') {
+		$memcacheDistributedClass = $this->config->getSystemValue('memcache.distributed', null);
+		if ($memcacheDistributedClass === null || ltrim($memcacheDistributedClass, '\\') !== \OC\Memcache\Memcached::class) {
 			return true;
 		}
 
diff --git a/lib/private/Memcache/Factory.php b/lib/private/Memcache/Factory.php
index 604f764c03c11..788a7c2e8c91a 100644
--- a/lib/private/Memcache/Factory.php
+++ b/lib/private/Memcache/Factory.php
@@ -73,16 +73,17 @@ class Factory implements ICacheFactory {
 	 */
 	public function __construct(string $globalPrefix, LoggerInterface $logger, IProfiler $profiler,
 		?string $localCacheClass = null, ?string $distributedCacheClass = null, ?string $lockingCacheClass = null, string $logFile = '') {
-		$this->logger = $logger;
 		$this->logFile = $logFile;
 		$this->globalPrefix = $globalPrefix;
 
 		if (!$localCacheClass) {
 			$localCacheClass = self::NULL_CACHE;
 		}
+		$localCacheClass = ltrim($localCacheClass, '\\');
 		if (!$distributedCacheClass) {
 			$distributedCacheClass = $localCacheClass;
 		}
+		$distributedCacheClass = ltrim($distributedCacheClass, '\\');
 
 		$missingCacheMessage = 'Memcache {class} not available for {use} cache';
 		$missingCacheHint = 'Is the matching PHP module installed and enabled?';
@@ -97,9 +98,10 @@ public function __construct(string $globalPrefix, LoggerInterface $logger, IProf
 			]), $missingCacheHint);
 		}
 		if (!($lockingCacheClass && class_exists($lockingCacheClass) && $lockingCacheClass::isAvailable())) {
-			// don't fallback since the fallback might not be suitable for storing lock
+			// don't fall back since the fallback might not be suitable for storing lock
 			$lockingCacheClass = self::NULL_CACHE;
 		}
+		$lockingCacheClass = ltrim($lockingCacheClass, '\\');
 
 		$this->localCacheClass = $localCacheClass;
 		$this->distributedCacheClass = $distributedCacheClass;
@@ -116,7 +118,7 @@ public function __construct(string $globalPrefix, LoggerInterface $logger, IProf
 	public function createLocking(string $prefix = ''): IMemcache {
 		assert($this->lockingCacheClass !== null);
 		$cache = new $this->lockingCacheClass($this->globalPrefix . '/' . $prefix);
-		if ($this->profiler->isEnabled() && $this->lockingCacheClass === '\OC\Memcache\Redis') {
+		if ($this->lockingCacheClass === Redis::class && $this->profiler->isEnabled()) {
 			// We only support the profiler with Redis
 			$cache = new ProfilerWrapperCache($cache, 'Locking');
 			$this->profiler->add($cache);
@@ -138,7 +140,7 @@ public function createLocking(string $prefix = ''): IMemcache {
 	public function createDistributed(string $prefix = ''): ICache {
 		assert($this->distributedCacheClass !== null);
 		$cache = new $this->distributedCacheClass($this->globalPrefix . '/' . $prefix);
-		if ($this->profiler->isEnabled() && $this->distributedCacheClass === '\OC\Memcache\Redis') {
+		if ($this->distributedCacheClass === Redis::class && $this->profiler->isEnabled()) {
 			// We only support the profiler with Redis
 			$cache = new ProfilerWrapperCache($cache, 'Distributed');
 			$this->profiler->add($cache);
@@ -160,7 +162,7 @@ public function createDistributed(string $prefix = ''): ICache {
 	public function createLocal(string $prefix = ''): ICache {
 		assert($this->localCacheClass !== null);
 		$cache = new $this->localCacheClass($this->globalPrefix . '/' . $prefix);
-		if ($this->profiler->isEnabled() && $this->localCacheClass === '\OC\Memcache\Redis') {
+		if ($this->localCacheClass === Redis::class && $this->profiler->isEnabled()) {
 			// We only support the profiler with Redis
 			$cache = new ProfilerWrapperCache($cache, 'Local');
 			$this->profiler->add($cache);
@@ -179,7 +181,7 @@ public function createLocal(string $prefix = ''): ICache {
 	 * @return bool
 	 */
 	public function isAvailable(): bool {
-		return ($this->distributedCacheClass !== self::NULL_CACHE);
+		return $this->distributedCacheClass !== self::NULL_CACHE;
 	}
 
 	/**
@@ -197,6 +199,6 @@ public function createLowLatency(string $prefix = ''): ICache {
 	 * @return bool
 	 */
 	public function isLocalCacheAvailable(): bool {
-		return ($this->localCacheClass !== self::NULL_CACHE);
+		return $this->localCacheClass !== self::NULL_CACHE;
 	}
 }