const { validateEvent, verifySignature } = require("nostr-tools"); module.exports = (authKey, authorized, authorized_keys, data, ws, req) => { if (!validateEvent(data)) { ws.send(JSON.stringify(["NOTICE", "error: invalid challenge response."])); return false; } if (!verifySignature(data)) { ws.send(JSON.stringify(["OK", data.id, false, "signature verification failed."])); return false; } if (!authorized_keys.includes(data.pubkey)) { ws.send(JSON.stringify(["OK", data.id, false, "unauthorized."])); return false; } if (data.kind != 22242) { ws.send(JSON.stringify(["OK", data.id, false, "not kind 22242."])); return false; } if (authorized) { ws.send(JSON.stringify(["OK", data.id, false, "already authorized."])); return false; } const tags = new Map(data.tags); if (!tags.get("relay").includes(req.headers.host)) { ws.send(JSON.stringify(["OK", data.id, false, "unmatched relay url."])); return false; }; if (tags.get("challenge") !== authKey) { ws.send(JSON.stringify(["OK", data.id, false, "unmatched challenge string."])); return false; } ws.send(JSON.stringify(["OK", data.id, true, `Welcome ${data.pubkey}`])); return true; }