Refactor to mono-repo + upgrade packages

3 files changed, 205 insertions, 0 deletions

diff --git a/src/gateway/events/Close.ts b/src/gateway/events/Close.ts
new file mode 100644
index 00000000..40d9a6f7
--- /dev/null
+++ b/src/gateway/events/Close.ts
@@ -0,0 +1,47 @@
+import { WebSocket } from "@fosscord/gateway";
+import {
+	emitEvent,
+	PresenceUpdateEvent,
+	PrivateSessionProjection,
+	Session,
+	SessionsReplace,
+	User,
+} from "@fosscord/util";
+
+export async function Close(this: WebSocket, code: number, reason: string) {
+	console.log("[WebSocket] closed", code, reason);
+	if (this.heartbeatTimeout) clearTimeout(this.heartbeatTimeout);
+	if (this.readyTimeout) clearTimeout(this.readyTimeout);
+	this.deflate?.close();
+	this.inflate?.close();
+	this.removeAllListeners();
+
+	if (this.session_id) {
+		await Session.delete({ session_id: this.session_id });
+		const sessions = await Session.find({
+			where: { user_id: this.user_id },
+			select: PrivateSessionProjection,
+		});
+		await emitEvent({
+			event: "SESSIONS_REPLACE",
+			user_id: this.user_id,
+			data: sessions,
+		} as SessionsReplace);
+		const session = sessions.first() || {
+			activities: [],
+			client_info: {},
+			status: "offline",
+		};
+
+		await emitEvent({
+			event: "PRESENCE_UPDATE",
+			user_id: this.user_id,
+			data: {
+				user: await User.getPublicUser(this.user_id),
+				activities: session.activities,
+				client_status: session?.client_info,
+				status: session.status,
+			},
+		} as PresenceUpdateEvent);
+	}
+}
diff --git a/src/gateway/events/Connection.ts b/src/gateway/events/Connection.ts
new file mode 100644
index 00000000..bed3cf44
--- /dev/null
+++ b/src/gateway/events/Connection.ts
@@ -0,0 +1,84 @@
+import WS from "ws";
+import { WebSocket } from "@fosscord/gateway";
+import { Send } from "../util/Send";
+import { CLOSECODES, OPCODES } from "../util/Constants";
+import { setHeartbeat } from "../util/Heartbeat";
+import { IncomingMessage } from "http";
+import { Close } from "./Close";
+import { Message } from "./Message";
+import { Deflate, Inflate } from "fast-zlib";
+import { URL } from "url";
+import { Config } from "@fosscord/util";
+var erlpack: any;
+try {
+	erlpack = require("@yukikaze-bot/erlpack");
+} catch (error) {}
+
+// TODO: check rate limit
+// TODO: specify rate limit in config
+// TODO: check msg max size
+
+export async function Connection(
+	this: WS.Server,
+	socket: WebSocket,
+	request: IncomingMessage
+) {
+	const forwardedFor = Config.get().security.forwadedFor;
+	const ipAddress = forwardedFor ? request.headers[forwardedFor] as string : request.socket.remoteAddress;
+
+	socket.ipAddress = ipAddress;
+
+	try {
+		// @ts-ignore
+		socket.on("close", Close);
+		// @ts-ignore
+		socket.on("message", Message);
+		console.log(`[Gateway] New connection from ${socket.ipAddress}, total ${this.clients.size}`);
+
+		const { searchParams } = new URL(`http://localhost${request.url}`);
+		// @ts-ignore
+		socket.encoding = searchParams.get("encoding") || "json";
+		if (!["json", "etf"].includes(socket.encoding)) {
+			if (socket.encoding === "etf" && erlpack) {
+				throw new Error(
+					"Erlpack is not installed: 'npm i @yukikaze-bot/erlpack'"
+				);
+			}
+			return socket.close(CLOSECODES.Decode_error);
+		}
+
+		socket.version = Number(searchParams.get("version")) || 8;
+		if (socket.version != 8)
+			return socket.close(CLOSECODES.Invalid_API_version);
+
+		// @ts-ignore
+		socket.compress = searchParams.get("compress") || "";
+		if (socket.compress) {
+			if (socket.compress !== "zlib-stream")
+				return socket.close(CLOSECODES.Decode_error);
+			socket.deflate = new Deflate();
+			socket.inflate = new Inflate();
+		}
+
+		socket.events = {};
+		socket.member_events = {};
+		socket.permissions = {};
+		socket.sequence = 0;
+
+		setHeartbeat(socket);
+
+		await Send(socket, {
+			op: OPCODES.Hello,
+			d: {
+				heartbeat_interval: 1000 * 30,
+			},
+		});
+
+		socket.readyTimeout = setTimeout(() => {
+			return socket.close(CLOSECODES.Session_timed_out);
+		}, 1000 * 30);
+	} catch (error) {
+		console.error(error);
+		return socket.close(CLOSECODES.Unknown_error);
+	}
+}
diff --git a/src/gateway/events/Message.ts b/src/gateway/events/Message.ts
new file mode 100644
index 00000000..db7dbad2
--- /dev/null
+++ b/src/gateway/events/Message.ts
@@ -0,0 +1,74 @@
+import { CLOSECODES, OPCODES } from "../util/Constants";
+import { WebSocket, Payload } from "@fosscord/gateway";
+var erlpack: any;
+try {
+	erlpack = require("@yukikaze-bot/erlpack");
+} catch (error) { }
+import OPCodeHandlers from "../opcodes";
+import { Tuple } from "lambert-server";
+import { check } from "../opcodes/instanceOf";
+import WS from "ws";
+import BigIntJson from "json-bigint";
+import * as Sentry from "@sentry/node";
+const bigIntJson = BigIntJson({ storeAsString: true });
+
+const PayloadSchema = {
+	op: Number,
+	$d: new Tuple(Object, Number), // or number for heartbeat sequence
+	$s: Number,
+	$t: String,
+};
+
+export async function Message(this: WebSocket, buffer: WS.Data) {
+	// TODO: compression
+	var data: Payload;
+
+	if (this.encoding === "etf" && buffer instanceof Buffer)
+		data = erlpack.unpack(buffer);
+	else if (this.encoding === "json" && buffer instanceof Buffer) {
+		if (this.inflate) {
+			try {
+				buffer = this.inflate.process(buffer) as any;
+			} catch {
+				buffer = buffer.toString() as any;
+			}
+		}
+		data = bigIntJson.parse(buffer as string);
+	}
+	else if (typeof buffer == "string") {
+		data = bigIntJson.parse(buffer as string)
+	}
+	else return;
+
+	check.call(this, PayloadSchema, data);
+
+	// @ts-ignore
+	const OPCodeHandler = OPCodeHandlers[data.op];
+	if (!OPCodeHandler) {
+		console.error("[Gateway] Unkown opcode " + data.op);
+		// TODO: if all opcodes are implemented comment this out:
+		// this.close(CLOSECODES.Unknown_opcode);
+		return;
+	}
+
+	// const transaction = Sentry.startTransaction({
+	// 	op: OPCODES[data.op],
+	// 	name: `GATEWAY ${OPCODES[data.op]}`,
+	// 	data: {
+	// 		...data.d,
+	// 		token: data?.d?.token ? "[Redacted]" : undefined,
+	// 	},
+	// });
+
+	try {
+		var ret = await OPCodeHandler.call(this, data);
+		// transaction.finish();
+		return ret;
+	} catch (error) {
+		Sentry.captureException(error);
+		// transaction.finish();
+		console.error(`Error: Op ${data.op}`, error);
+		// if (!this.CLOSED && this.CLOSING)
+		return this.close(CLOSECODES.Unknown_error);
+	}
+}