From ff2858b6ea8f586daa95e51ae21315f86cc5ded5 Mon Sep 17 00:00:00 2001
From: Arno Richter <oelna@oelna.de>
Date: Fri, 13 Jan 2023 17:47:09 +0100
Subject: first draft of activitypub support

---
 lib/activitypub-webfinger.php | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 lib/activitypub-webfinger.php

(limited to 'lib/activitypub-webfinger.php')

diff --git a/lib/activitypub-webfinger.php b/lib/activitypub-webfinger.php
new file mode 100644
index 0000000..2ad44fb
--- /dev/null
+++ b/lib/activitypub-webfinger.php
@@ -0,0 +1,22 @@
+<?php
+
+	// todo: handle empty usernames
+
+	$actor = ltrim($config['microblog_account'], '@');
+	$url = parse_url($config['url']);
+	$domain = $url['host'];
+	if(!empty($url['path'])) $domain .= rtrim($url['path'], '/');
+
+	$data = [
+		'subject' => 'acct:'.$actor.'@'.$domain,
+		'links' => [
+			[
+				'rel' => 'self',
+				'type' => 'application/activity+json',
+				'href' => $config['url'].'/actor'
+			]
+		]
+	];
+
+	header('Content-Type: application/ld+json');
+	echo(json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
-- 
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