diff --git a/src/activitypub/webfinger/index.ts b/src/activitypub/webfinger/index.ts
new file mode 100644
index 00000000..0b82e103
--- /dev/null
+++ b/src/activitypub/webfinger/index.ts
@@ -0,0 +1,63 @@
+import { route } from "@spacebar/api";
+import { Channel, Config, User, WebfingerResponse } from "@spacebar/util";
+import { Request, Response, Router } from "express";
+import { HTTPError } from "lambert-server";
+
+const router = Router();
+export default router;
+
+router.get(
+ "/",
+ route({
+ query: {
+ resource: {
+ type: "string",
+ description: "Resource to locate",
+ },
+ },
+ responses: {
+ 200: {
+ body: "WebfingerResponse",
+ },
+ },
+ }),
+ async (req: Request, res: Response<WebfingerResponse>) => {
+ let resource = req.query.resource as string | undefined;
+ if (!resource) throw new HTTPError("Must specify resource");
+
+ // we know what you mean, bro
+ resource = resource.replace("acct:", "");
+
+ const [resourceId, resourceDomain] = resource.split("@");
+
+ const { webDomain } = Config.get().federation;
+ if (resourceDomain != webDomain)
+ throw new HTTPError("Resource could not be found", 404);
+
+ const found =
+ (await User.findOne({
+ where: { id: resourceId },
+ select: ["id"],
+ })) ||
+ (await Channel.findOne({
+ where: { id: resourceId },
+ select: ["id"],
+ }));
+
+ if (!found) throw new HTTPError("Resource could not be found", 404);
+
+ const type = found instanceof Channel ? "channel" : "user";
+
+ return res.json({
+ subject: `acct:${resourceId}@${webDomain}`, // mastodon always returns acct so might as well
+ aliases: [`https://${webDomain}/fed/${type}/${resourceId}`],
+ links: [
+ {
+ rel: "self",
+ type: "application/activity+json",
+ href: `https://${webDomain}/fed/${type}/${resourceId}`,
+ },
+ ],
+ });
+ },
+);
|
