1 files changed, 77 insertions, 0 deletions
diff --git a/core/Controller/AsyncProcessController.php b/core/Controller/AsyncProcessController.php
new file mode 100644
index 00000000000..f644e3a7851
--- /dev/null
+++ b/core/Controller/AsyncProcessController.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Core\Controller;
+
+use OC\Async\Exceptions\BlockAlreadyRunningException;
+use OC\Async\ForkManager;
+use OC\Config\Lexicon\CoreConfigLexicon;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\Attribute\FrontpageRoute;
+use OCP\AppFramework\Http\Attribute\NoAdminRequired;
+use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
+use OCP\AppFramework\Http\Attribute\PublicPage;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\Async\Enum\ProcessExecutionTime;
+use OCP\IAppConfig;
+use OCP\IRequest;
+
+class AsyncProcessController extends Controller {
+	public function __construct(
+		string $appName,
+		IRequest $request,
+		private IAppConfig $appConfig,
+		private ForkManager $forkManager,
+	) {
+		parent::__construct($appName, $request);
+	}
+
+	#[NoAdminRequired]
+	#[NoCSRFRequired]
+	#[PublicPage]
+	#[FrontpageRoute(verb: 'POST', url: '/core/asyncProcessFork')]
+	public function processFork(string $token): DataResponse {
+		$metadata = ['executionTime' => ProcessExecutionTime::NOW];
+
+		// remote might only need a confirmation that this is a valid loopback endpoint
+		if ($token === '__ping__') {
+			return new DataResponse(['ping' => $this->appConfig->getValueString('core', CoreConfigLexicon::ASYNC_LOOPBACK_PING)]);
+		}
+
+		$this->async($token);
+
+		try {
+			$this->forkManager->runSession($token, $metadata);
+		} catch (BlockAlreadyRunningException) {
+			// TODO: debug() ?
+		}
+
+		exit();
+	}
+
+	private function async(string $result = ''): void {
+		if (ob_get_contents() !== false) {
+			ob_end_clean();
+		}
+
+		header('Connection: close');
+		header('Content-Encoding: none');
+		ignore_user_abort();
+		$timeLimit = 100;
+		set_time_limit(max($timeLimit, 0));
+		ob_start();
+
+		echo($result);
+
+		$size = ob_get_length();
+		header('Content-Length: ' . $size);
+		ob_end_flush();
+		flush();
+	}
+
+}