fix: #138 Missing worker policy when launching assistant

Signed-off-by: Sebastien Marinier <seb@smarinier.net>

Author: smarinier

lib/AppInfo/Application.php

@@ -4,6 +4,7 @@
 
 use OCA\Assistant\Capabilities;
 use OCA\Assistant\Listener\BeforeTemplateRenderedListener;
+use OCA\Assistant\Listener\CSPListener;
 use OCA\Assistant\Listener\FreePrompt\FreePromptReferenceListener;
 use OCA\Assistant\Listener\SpeechToText\SpeechToTextReferenceListener;
 use OCA\Assistant\Listener\TaskFailedListener;
@@ -20,6 +21,7 @@
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\AppFramework\Http\Events\BeforeTemplateRenderedEvent;
 use OCP\Collaboration\Reference\RenderReferenceEvent;
+use OCP\Security\CSP\AddContentSecurityPolicyEvent;
 use OCP\TaskProcessing\Events\TaskFailedEvent;
 use OCP\TaskProcessing\Events\TaskSuccessfulEvent;
 
@@ -55,6 +57,8 @@ public function register(IRegistrationContext $context): void {
 		$context->registerEventListener(TaskFailedEvent::class, TaskFailedListener::class);
 
 		$context->registerNotifierService(Notifier::class);
+
+		$context->registerEventListener(AddContentSecurityPolicyEvent::class, CSPListener::class);
 	}
 
 	public function boot(IBootContext $context): void {

lib/Listener/CSPListener.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Assistant\Listener;
+
+use OCP\AppFramework\Http\ContentSecurityPolicy;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Security\CSP\AddContentSecurityPolicyEvent;
+
+/**
+ * @template-implements IEventListener<AddContentSecurityPolicyEvent>
+ */
+class CSPListener implements IEventListener {
+
+	public function __construct(
+	) {
+	}
+
+	public function handle(Event $event): void {
+		if (!($event instanceof AddContentSecurityPolicyEvent)) {
+			return;
+		}
+
+		$csp = new ContentSecurityPolicy();
+		$csp->addAllowedWorkerSrcDomain('blob:');
+		$event->addPolicy($csp);
+	}
+}