Fix frankenphp shutdown functions

Caddyfile

@@ -8,6 +8,7 @@
 	frankenphp {
 		max_threads auto
 		max_requests 100
+		php_ini memory_limit 512M
 
 		worker {
 			num 2
@@ -19,7 +20,7 @@
 			watch core/**/*.php
 			watch 3rdparty/**/*.php
 			watch *.php
-			
+
 			match /index.php/*
 			max_consecutive_failures -1
 		}
@@ -55,7 +56,6 @@
 
 {$SERVER_NAME:localhost} {
 	php_server {
-
 	}
 
 	log {

lib/OC.php

@@ -779,7 +779,14 @@ public static function initForRequest(): void {
 		self::handleAuthHeaders();
 
 		// setup the basic server
-		self::$server = new \OC\Server(\OC::$WEBROOT, self::$config);
+		/** @psalm-suppress RedundantPropertyInitializationCheck The server is first initialized here */
+		if (!isset(self::$server)) {
+			self::$server = new \OC\Server(\OC::$WEBROOT, self::$config);
+		} else {
+			set_exception_handler(null);
+			set_error_handler(null);
+			self::$server->reset();
+		}
 		self::$server->boot();
 
 		self::oneTimeChecks();
@@ -825,7 +832,7 @@ public static function initForRequest(): void {
 			} else {
 				set_error_handler([$errorHandler, 'onError']);
 			}
-			register_shutdown_function([$errorHandler, 'onShutdown']);
+			self::$server->registerShutdownFunction($errorHandler->onShutdown(...));
 			set_exception_handler($exceptionHandler);
 		}
 
@@ -924,11 +931,8 @@ public static function initForRequest(): void {
 			$appManager->loadApp('settings');
 		}
 
-		//make sure temporary files are cleaned up
-		$tmpManager = Server::get(\OCP\ITempManager::class);
-		register_shutdown_function([$tmpManager, 'clean']);
 		$lockProvider = Server::get(\OCP\Lock\ILockingProvider::class);
-		register_shutdown_function([$lockProvider, 'releaseAll']);
+		self::$server->registerShutdownFunction($lockProvider->releaseAll(...));
 
 		$host = $request->getInsecureServerHost();
 		/**
@@ -974,11 +978,11 @@ public static function initForRequest(): void {
 		$eventLogger->log('init', 'OC::init', $loaderStart, microtime(true));
 		$eventLogger->start('runtime', 'Runtime');
 		$eventLogger->start('request', 'Full request after boot');
-		register_shutdown_function(function () use ($eventLogger) {
+		self::$server->registerShutdownFunction(static function () use ($eventLogger) {
 			$eventLogger->end('request');
 		});
 
-		register_shutdown_function(function () use ($config) {
+		self::$server->registerShutdownFunction(static function () use ($config) {
 			$memoryPeak = memory_get_peak_usage();
 			$debugModeEnabled = $config->getSystemValueBool('debug', false);
 			$memoryLimit = null;

lib/private/Server.php

@@ -306,12 +306,28 @@
  * TODO: hookup all manager classes
  */
 class Server extends ServerContainer {
+	private array $shutdownFunctions = [];
+
 	public function __construct(
 		private string $webRoot,
-		Config $config,
+		private Config $config,
 	) {
 		parent::__construct();
+		$this->runInitialRegistrations();
+
+		register_shutdown_function($this->shutdown(...));
+	}
+
+	/**
+	 * Empty container and re-run initial registration
+	 */
+	public function reset(): void {
+		$this->shutdown();
+		parent::__construct();
+		$this->runInitialRegistrations();
+	}
 
+	public function runInitialRegistrations(): void {
 		// To find out if we are running from CLI or not
 		$this->registerParameter('isCLI', \OC::$CLI);
 		$this->registerParameter('serverRoot', \OC::$SERVERROOT);
@@ -472,7 +488,7 @@ public function __construct(
 
 		$this->registerAlias(IConfig::class, AllConfig::class);
 
-		$this->registerService(SystemConfig::class, static fn ($c) => new SystemConfig($config));
+		$this->registerService(SystemConfig::class, fn ($c) => new SystemConfig($this->config));
 
 		$this->registerAlias(IAppConfig::class, \OC\AppConfig::class);
 		$this->registerAlias(IUserConfig::class, UserConfig::class);
@@ -1145,4 +1161,15 @@ public function setSession(ISession $session): void {
 	public function getWebRoot(): string {
 		return $this->webRoot;
 	}
+
+	public function registerShutdownFunction(callable $function): void {
+		$this->shutdownFunctions[] = $function;
+	}
+
+	public function shutdown(): void {
+		foreach ($this->shutdownFunctions as $shutdownFunction) {
+			$shutdownFunction();
+		}
+		$this->shutdownFunctions = [];
+	}
 }

lib/private/TempManager.php

@@ -33,6 +33,10 @@ public function __construct(
 		$this->tmpBaseDir = $this->getTempBaseDir();
 	}
 
+	public function __destruct() {
+		$this->clean();
+	}
+
 	private function generateTemporaryPath(string $postFix): string {
 		$secureRandom = Server::get(ISecureRandom::class);
 		$absolutePath = $this->tmpBaseDir . '/' . self::TMP_PREFIX . $secureRandom->generate(32, ISecureRandom::CHAR_ALPHANUMERIC);
@@ -93,6 +97,7 @@ public function getTemporaryFolder($postFix = ''): string|false {
 	#[\Override]
 	public function clean() {
 		$this->cleanFiles($this->current);
+		$this->current = [];
 	}
 
 	/**

tests/lib/TempManagerTest.php

@@ -173,7 +173,8 @@ public function testGenerateTemporaryPathTraversal(): void {
 	}
 
 	public function testGetTempBaseDirFromConfig(): void {
-		$dir = $this->getManager()->getTemporaryFolder();
+		$manager1 = $this->getManager();
+		$dir = $manager1->getTemporaryFolder();
 
 		$config = $this->createMock(IConfig::class);
 		$config->expects($this->once())