| 1 | // Minimal DNSimple client for the connected-services prototype |
| 2 | // (docs/connected-services.md). Kept tiny and dependency-free so the only impure |
| 3 | // part is the fetch — point it at a fake with LCHAT_DNSIMPLE_BASE in tests. |
| 4 | // |
| 5 | // The token this receives is a *scoped* DNSimple access token, handed to the bot |
| 6 | // inside a time-boxed, sealed capability grant — never stored on this host. We |
| 7 | // hold it only for the duration of one call and drop it. |
| 8 | const BASE = (process.env.LCHAT_DNSIMPLE_BASE || "https://api.dnsimple.com").replace(/\/$/, ""); |
| 9 | |
| 10 | async function api(token, method, path) { |
| 11 | const r = await fetch(`${BASE}${path}`, { |
| 12 | method, |
| 13 | headers: { Authorization: `Bearer ${token}`, Accept: "application/json" }, |
| 14 | }); |
| 15 | const text = await r.text(); |
| 16 | let data = {}; |
| 17 | try { |
| 18 | data = text ? JSON.parse(text) : {}; |
| 19 | } catch {} |
| 20 | if (!r.ok) throw new Error(data && data.message ? data.message : `DNSimple ${r.status}`); |
| 21 | return data; |
| 22 | } |
| 23 | |
| 24 | // exchangeViaBroker swaps an authorization code for an access token via the |
| 25 | // connect broker (docs/connected-services.md). DNSimple only offers CONFIDENTIAL |
| 26 | // OAuth apps, so the exchange needs the client_secret — which lives ONLY on the |
| 27 | // broker (like the APNs .p8 on the push relay), never on this sidecar. We |
| 28 | // authenticate to the broker with a per-instance bearer token and get back only |
| 29 | // the user's access token, which the caller seals to the member and drops. |
| 30 | export async function exchangeViaBroker({ code, state, brokerUrl, brokerToken }) { |
| 31 | if (!brokerUrl || !brokerToken) |
| 32 | throw new Error("connect broker not configured on this sidecar (set LCHAT_CONNECT_BROKER_URL/_TOKEN)"); |
| 33 | const r = await fetch(`${brokerUrl.replace(/\/$/, "")}/api/exchange`, { |
| 34 | method: "POST", |
| 35 | headers: { "Content-Type": "application/json", Authorization: `Bearer ${brokerToken}` }, |
| 36 | body: JSON.stringify({ code, state }), |
| 37 | }); |
| 38 | const d = await r.json().catch(() => ({})); |
| 39 | if (!r.ok || !d.access_token) throw new Error(d && d.message ? d.message : `broker exchange ${r.status}`); |
| 40 | return d.access_token; |
| 41 | } |
| 42 | |
| 43 | // whoami resolves the single account the token acts for. An account-scoped token |
| 44 | // returns `{ data: { account: { id } } }`; a user token that spans several |
| 45 | // accounts returns a user instead — we refuse it, since registrar calls are |
| 46 | // account-scoped and we won't guess which account to spend from. |
| 47 | export async function whoami(token) { |
| 48 | const d = await api(token, "GET", "/v2/whoami"); |
| 49 | const id = d && d.data && d.data.account && d.data.account.id; |
| 50 | if (!id) throw new Error("that token isn't scoped to a single account — create an account access token"); |
| 51 | return id; |
| 52 | } |
| 53 | |
| 54 | // Run an async fn over items with a bounded number in flight — the domains list |
| 55 | // doesn't include pricing, so we fetch it per-domain and don't want N sockets at |
| 56 | // once (nor to trip DNSimple's rate limit). |
| 57 | async function mapLimit(items, limit, fn) { |
| 58 | const queue = items.map((item, i) => [item, i]); |
| 59 | const worker = async () => { |
| 60 | for (;;) { |
| 61 | const next = queue.shift(); |
| 62 | if (!next) return; |
| 63 | await fn(next[0], next[1]); |
| 64 | } |
| 65 | }; |
| 66 | await Promise.all(Array.from({ length: Math.min(limit, items.length) }, worker)); |
| 67 | } |
| 68 | |
| 69 | // listDomains returns structured rows for the DNSimple app's table. GET |
| 70 | // /v2/{account}/domains gives name/state/expiry/auto_renew; the renewal price |
| 71 | // isn't in that payload, so we look it up per-domain (best-effort, bounded |
| 72 | // concurrency) — a failure just leaves that row's price undefined ("—"). |
| 73 | export async function listDomains(token) { |
| 74 | const account = await whoami(token); |
| 75 | const d = await api(token, "GET", `/v2/${account}/domains?per_page=100`); |
| 76 | const rows = ((d && d.data) || []) |
| 77 | .filter((r) => r && r.name) |
| 78 | .map((r) => ({ |
| 79 | name: r.name, |
| 80 | state: r.state || "", |
| 81 | auto_renew: !!r.auto_renew, |
| 82 | expires_on: r.expires_on || (r.expires_at ? String(r.expires_at).slice(0, 10) : ""), |
| 83 | // account id → the app can deep-link to the domain's page on dnsimple.com. |
| 84 | account_id: r.account_id || account, |
| 85 | })); |
| 86 | await mapLimit(rows, 8, async (row) => { |
| 87 | try { |
| 88 | const p = await api(token, "GET", `/v2/${account}/registrar/domains/${encodeURIComponent(row.name)}/prices`); |
| 89 | const price = p && p.data && (p.data.renewal_price ?? p.data.registration_price); |
| 90 | if (price != null) row.price = Number(price); |
| 91 | } catch { |
| 92 | /* pricing is best-effort — leave undefined */ |
| 93 | } |
| 94 | }); |
| 95 | return rows; |
| 96 | } |
| 97 | |
| 98 | const DOMAIN_RE = /^(?=.{1,253}$)([a-z0-9](-?[a-z0-9])*\.)+[a-z]{2,}$/i; |
| 99 | |
| 100 | // checkAvailability is the read-only call `/register` makes first: is the domain |
| 101 | // free to register, and is it premium-priced? No money moves. |
| 102 | // GET /v2/{account}/registrar/domains/{domain}/check |
| 103 | export async function checkAvailability(domain, token) { |
| 104 | if (!DOMAIN_RE.test(domain || "")) throw new Error(`"${domain}" doesn't look like a domain name`); |
| 105 | const account = await whoami(token); |
| 106 | const d = await api(token, "GET", `/v2/${account}/registrar/domains/${encodeURIComponent(domain.toLowerCase())}/check`); |
| 107 | const info = (d && d.data) || {}; |
| 108 | return { domain: info.domain || domain, available: !!info.available, premium: !!info.premium }; |
| 109 | } |
| 110 | |
| 111 | // registerDomain is the money-spending, irreversible step. It is deliberately |
| 112 | // NOT called by the availability check — a real registration is confirmed by the |
| 113 | // member tapping the "Register" chip (see docs/connected-services.md: irreversible |
| 114 | // actions confirm in place, never as a command side effect). Wired here so the |
| 115 | // shape is visible; the runtime does not auto-invoke it. |
| 116 | // POST /v2/{account}/registrar/domains/{domain}/registrations { registrant_id } |
| 117 | export async function registerDomain(domain, token, { registrantId } = {}) { |
| 118 | if (!DOMAIN_RE.test(domain || "")) throw new Error(`"${domain}" doesn't look like a domain name`); |
| 119 | if (!registrantId) throw new Error("registration needs a registrant contact id (registrantId)"); |
| 120 | const account = await whoami(token); |
| 121 | const r = await fetch( |
| 122 | `${BASE}/v2/${account}/registrar/domains/${encodeURIComponent(domain.toLowerCase())}/registrations`, |
| 123 | { |
| 124 | method: "POST", |
| 125 | headers: { Authorization: `Bearer ${token}`, Accept: "application/json", "Content-Type": "application/json" }, |
| 126 | body: JSON.stringify({ registrant_id: registrantId }), |
| 127 | }, |
| 128 | ); |
| 129 | const d = await r.json().catch(() => ({})); |
| 130 | if (!r.ok) throw new Error(d && d.message ? d.message : `DNSimple ${r.status}`); |
| 131 | return { id: d && d.data && d.data.id, state: (d && d.data && d.data.state) || "requested" }; |
| 132 | } |
| 133 | |
amadan