diff options
Diffstat (limited to 'src/routes/activitypub.ts')
| -rw-r--r-- | src/routes/activitypub.ts | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/routes/activitypub.ts b/src/routes/activitypub.ts new file mode 100644 index 0000000..2c4231a --- /dev/null +++ b/src/routes/activitypub.ts @@ -0,0 +1,174 @@ +import { Router, Request, Response, NextFunction } from "express"; +import { createFeaturedPost, createWebfinger } from "../activitypub.js"; +import { acceptsActivityPub } from "../lib/activitypub.js"; +import getConfig from "../lib/config.js"; +import Event from "../models/Event.js"; +import { addToLog } from "../helpers.js"; + +const config = getConfig(); + +const router = Router(); + +const send404IfNotFederated = ( + req: Request, + res: Response, + next: NextFunction, +) => { + if (!config.general.is_federated) { + res.status(404).render("404", { url: req.url }); + return; + } + next(); +}; + +router.use(send404IfNotFederated); + +// return the JSON for the featured/pinned post for this event +router.get("/:eventID/featured", (req: Request, res: Response) => { + const { eventID } = req.params; + const featured = { + "@context": "https://www.w3.org/ns/activitystreams", + id: `https://${config.general.domain}/${eventID}/featured`, + type: "OrderedCollection", + orderedItems: [createFeaturedPost(eventID)], + }; + if (acceptsActivityPub(req)) { + res.header("Content-Type", "application/activity+json").send(featured); + } else { + res.header("Content-Type", "application/json").send(featured); + } +}); + +// return the JSON for a given activitypub message +router.get("/:eventID/m/:hash", async (req: Request, res: Response) => { + const { hash, eventID } = req.params; + const id = `https://${config.general.domain}/${eventID}/m/${hash}`; + + try { + const event = await Event.findOne({ + id: eventID, + }); + if (!event) { + return res.status(404).render("404", { url: req.url }); + } else { + if (!event.activityPubMessages) { + return res.status(404).render("404", { url: req.url }); + } + const message = event.activityPubMessages.find( + (el) => el.id === id, + ); + if (message) { + if (acceptsActivityPub(req)) { + res.header( + "Content-Type", + "application/activity+json", + ).send(JSON.parse(message.content || "{}")); + } else { + res.header("Content-Type", "application/json").send( + JSON.parse(message.content || "{}"), + ); + } + } else { + return res.status(404).render("404", { url: req.url }); + } + } + } catch (err) { + addToLog( + "getActivityPubMessage", + "error", + "Attempt to get Activity Pub Message for " + + id + + " failed with error: " + + err, + ); + return res.status(404).render("404", { url: req.url }); + } +}); + +router.get("/.well-known/webfinger", async (req, res) => { + let resource = req.query.resource as string; + if (!resource || !resource.includes("acct:")) { + return res + .status(400) + .send( + 'Bad request. Please make sure "acct:USER@DOMAIN" is what you are sending as the "resource" query parameter.', + ); + } else { + // "foo@domain" + let activityPubAccount = resource.replace("acct:", ""); + // "foo" + let eventID = activityPubAccount.replace(/@.*/, ""); + + try { + const event = await Event.findOne({ id: eventID }); + + if (!event) { + return res.status(404).render("404", { url: req.url }); + } else { + if (acceptsActivityPub(req)) { + res.header( + "Content-Type", + "application/activity+json", + ).send(createWebfinger(eventID, config.general.domain)); + } else { + res.header("Content-Type", "application/json").send( + createWebfinger(eventID, config.general.domain), + ); + } + } + } catch (err) { + addToLog( + "renderWebfinger", + "error", + `Attempt to render webfinger for ${resource} failed with error: ${err}`, + ); + return res.status(404).render("404", { url: req.url }); + } + } +}); + +router.get("/:eventID/followers", async (req, res) => { + const eventID = req.params.eventID; + + try { + const event = await Event.findOne({ id: eventID }); + + if (event && event.followers) { + const followers = event.followers.map((el) => el.actorId); + let followersCollection = { + type: "OrderedCollection", + totalItems: followers.length, + id: `https://${config.general.domain}/${eventID}/followers`, + first: { + type: "OrderedCollectionPage", + totalItems: followers.length, + partOf: `https://${config.general.domain}/${eventID}/followers`, + orderedItems: followers, + id: `https://${config.general.domain}/${eventID}/followers?page=1`, + }, + "@context": ["https://www.w3.org/ns/activitystreams"], + }; + + if (acceptsActivityPub(req)) { + return res + .header("Content-Type", "application/activity+json") + .send(followersCollection); + } else { + return res + .header("Content-Type", "application/json") + .send(followersCollection); + } + } else { + return res.status(400).send("Bad request."); + } + } catch (err) { + addToLog( + "renderFollowers", + "error", + `Attempt to render followers for ${eventID} failed with error: ${err}`, + ); + return res.status(404).render("404", { url: req.url }); + } +}); + +export default router; |