From d1501ab1d329f0693ebe615efaf87e65277d3fc6 Mon Sep 17 00:00:00 2001
From: Julius Knorr <jus@bitgrid.net>
Date: Fri, 27 Dec 2024 15:48:46 +0100
Subject: [PATCH] feat: Check remove server connectivity

Signed-off-by: Julius Knorr <jus@bitgrid.net>
---
 lib/Command/ActivateConfig.php        |  9 +++++++
 lib/Controller/SettingsController.php |  2 ++
 lib/Service/ConnectivityService.php   | 36 +++++++++++++++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/lib/Command/ActivateConfig.php b/lib/Command/ActivateConfig.php
index de25ecd19a..35e4bd0a93 100644
--- a/lib/Command/ActivateConfig.php
+++ b/lib/Command/ActivateConfig.php
@@ -81,6 +81,15 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 				return 1;
 			}
 
+			try {
+				$this->connectivityService->testCallback($output);
+			} catch (\Throwable $e) {
+				// FIXME: Optional when allowing generic WOPI servers
+				$output->writeln('<error>Failed to fetch wopi');
+				$output->writeln($e->getMessage());
+				return 1;
+			}
+
 			// Summarize URLs for easier debugging
 
 			$output->writeln('');
diff --git a/lib/Controller/SettingsController.php b/lib/Controller/SettingsController.php
index 6dee13062f..6087d43375 100644
--- a/lib/Controller/SettingsController.php
+++ b/lib/Controller/SettingsController.php
@@ -65,6 +65,7 @@ public function checkSettings(): DataResponse {
 			$output = new NullOutput();
 			$this->connectivityService->testDiscovery($output);
 			$this->connectivityService->testCapabilities($output);
+			$this->connectivityService->testCallback($output);
 		} catch (\Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
 			return new DataResponse([
@@ -181,6 +182,7 @@ public function setSettings(
 			$this->connectivityService->testDiscovery($output);
 			$this->connectivityService->testCapabilities($output);
 			$this->connectivityService->autoConfigurePublicUrl();
+			$this->connectivityService->testCallback($output);
 		} catch (\Throwable $e) {
 			return new JSONResponse([
 				'status' => 'error',
diff --git a/lib/Service/ConnectivityService.php b/lib/Service/ConnectivityService.php
index fd19fb16f1..cb2c4c0ad3 100644
--- a/lib/Service/ConnectivityService.php
+++ b/lib/Service/ConnectivityService.php
@@ -9,6 +9,8 @@
 use Exception;
 use OCA\Richdocuments\AppConfig;
 use OCA\Richdocuments\WOPI\Parser;
+use OCP\Http\Client\IClientService;
+use OCP\IURLGenerator;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class ConnectivityService {
@@ -17,6 +19,8 @@ public function __construct(
 		private DiscoveryService $discoveryService,
 		private CapabilitiesService $capabilitiesService,
 		private Parser $parser,
+		private IClientService $clientService,
+		private IURLGenerator $urlGenerator,
 	) {
 	}
 
@@ -47,6 +51,38 @@ public function testCapabilities(OutputInterface $output): void {
 		$output->writeln('<info>✓ Detected WOPI server: ' . $this->capabilitiesService->getServerProductName() . ' ' . $this->capabilitiesService->getProductVersion() . '</info>');
 	}
 
+	public function testCallback(OutputInterface $output): void {
+		$url = $this->parser->getUrlSrcValue('Capabilities');
+		if ($url === '') {
+			// Fixme can we skip early if the collabora version does not have the wopiAccessCheck endpoint, maybe it can be exposed in discovery
+			return;
+		}
+
+		$url = str_replace('/hosting/capabilities', '/hosting/wopiAccessCheck', $url);
+
+		$callbackUrl = $this->urlGenerator->getAbsoluteURL('/status.php');
+
+		$client = $this->clientService->newClient();
+		try {
+			$response = $client->post($url, [
+				...RemoteOptionsService::getDefaultOptions(),
+				'body' => json_encode([
+					'callbackUrl' => $callbackUrl,
+				]),
+				'headers' => [
+					'Content-Type' => 'application/json',
+				],
+			]);
+			$result = json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR);
+			if ($result['status'] === 'CheckStatus::WopiHostNotAllowed') {
+				throw new \Exception('WOPI host not allowed by Collabora');
+			}
+		} catch (Exception $e) {
+			throw $e;
+		}
+		$output->writeln('<info>✓ URL Callback ok</info>');
+	}
+
 	/**
 	 * Detect public URL of the WOPI server for setting CSP on Nextcloud
 	 *