73 lines
1.7 KiB
TypeScript
73 lines
1.7 KiB
TypeScript
import type { Peer } from "@lumeweb/peer-discovery";
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import { IrcClient } from "@ctrl/irc";
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import jsonStringify from "json-stringify-deterministic";
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import b4a from "b4a";
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import * as ed from "@noble/ed25519";
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import { ripemd160 } from "@noble/hashes/ripemd160";
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import { sha256 } from "@noble/hashes/sha256";
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import { bytesToHex } from "@noble/hashes/utils";
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const hash160 = (data: Uint8Array) => ripemd160(sha256(data));
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interface SignedPeerResponse extends Peer {
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timestamp: number;
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signature?: string;
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}
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export default async (
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pubkey: Buffer,
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options = {}
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): Promise<boolean | Peer> => {
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let ircPubKey = await ed.getPublicKey(ed.utils.randomPrivateKey());
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let client = new IrcClient(
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undefined,
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bytesToHex(hash160(ircPubKey)).substring(0, 15),
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{
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host: "irc.liberta.casa",
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port: 6697,
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secure: true,
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channels: ["#lumeweb"],
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}
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);
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client.connect();
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await new Promise((resolve) => {
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client.once("join", resolve);
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});
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client.say("#lumeweb", b4a.toBuffer(pubkey).toString("hex"));
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return new Promise<Peer>((resolve, reject) => {
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client.on("pm", async (from: string, text: string) => {
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let json: SignedPeerResponse;
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try {
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json = JSON.parse(text);
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} catch {
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return;
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}
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const verifyData = {
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host: json.host,
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port: json.port,
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timestamp: json.timestamp,
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};
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const verifyPayload = jsonStringify(verifyData);
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if (
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!(await ed.verify(
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b4a.from(json.signature, "hex"),
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b4a.from(verifyPayload),
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pubkey
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))
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) {
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return;
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}
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client.end();
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resolve({ host: json.host, port: json.port });
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});
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});
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};
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