693 lines
20 KiB
TypeScript
693 lines
20 KiB
TypeScript
import Websock from "./websock";
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import * as message from "./message.js";
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import * as rendezvous from "./rendezvous.js";
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import { loadVp9, loadOpus } from "./codec";
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import * as sha256 from "fast-sha256";
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import * as globals from "./globals";
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import { decompress, mapKey, sleep } from "./common";
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const PORT = 21116;
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const HOST = "rs-sg.rustdesk.com";
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const SCHEMA = "ws://";
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type MsgboxCallback = (type: string, title: string, text: string) => void;
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type DrawCallback = (data: Uint8Array) => void;
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export default class Connection {
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_msgs: any[];
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_ws: Websock | undefined;
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_interval: any;
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_id: string;
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_hash: message.Hash | undefined;
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_msgbox: MsgboxCallback;
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_draw: DrawCallback;
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_peerInfo: message.PeerInfo | undefined;
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_firstFrame: Boolean | undefined;
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_videoDecoder: any;
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_audioDecoder: any;
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_password: Uint8Array | undefined;
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_options: any;
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_videoTestSpeed: number[];
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constructor() {
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this._msgbox = globals.msgbox;
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this._draw = globals.draw;
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this._msgs = [];
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this._id = "";
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this._videoTestSpeed = [0, 0];
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}
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async start(id: string) {
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if (!this._options) {
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this._options = globals.getPeers()[id] || {};
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}
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if (!this._password) {
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const p = this.getOption("password");
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if (p) {
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try {
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this._password = Uint8Array.from(JSON.parse("[" + p + "]"));
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} catch (e) {
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console.error(e);
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}
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}
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}
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this._interval = setInterval(() => {
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while (this._msgs.length) {
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this._ws?.sendMessage(this._msgs[0]);
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this._msgs.splice(0, 1);
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}
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}, 1);
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this.loadVideoDecoder();
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this.loadAudioDecoder();
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const uri = getDefaultUri();
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const ws = new Websock(uri, true);
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this._ws = ws;
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this._id = id;
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console.log(
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new Date() + ": Conntecting to rendezvoous server: " + uri + ", for " + id
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);
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await ws.open();
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console.log(new Date() + ": Connected to rendezvoous server");
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const conn_type = rendezvous.ConnType.DEFAULT_CONN;
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const nat_type = rendezvous.NatType.SYMMETRIC;
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const punch_hole_request = rendezvous.PunchHoleRequest.fromPartial({
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id,
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licence_key: localStorage.getItem("key") || undefined,
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conn_type,
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nat_type,
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});
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ws.sendRendezvous({ punch_hole_request });
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const msg = (await ws.next()) as rendezvous.RendezvousMessage;
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ws.close();
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console.log(new Date() + ": Got relay response");
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const phr = msg.punch_hole_response;
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const rr = msg.relay_response;
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if (phr) {
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if (phr.failure != rendezvous.PunchHoleResponse_Failure.UNRECOGNIZED) {
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switch (phr?.failure) {
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case rendezvous.PunchHoleResponse_Failure.ID_NOT_EXIST:
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this.msgbox("error", "Error", "ID does not exist");
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break;
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case rendezvous.PunchHoleResponse_Failure.OFFLINE:
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this.msgbox("error", "Error", "Remote desktop is offline");
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break;
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case rendezvous.PunchHoleResponse_Failure.LICENSE_MISMATCH:
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this.msgbox("error", "Error", "Key mismatch");
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break;
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default:
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if (phr?.other_failure) {
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this.msgbox("error", "Error", phr?.other_failure);
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}
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}
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}
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} else if (rr) {
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await this.connectRelay(rr);
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}
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}
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async connectRelay(rr: rendezvous.RelayResponse) {
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const pk = rr.pk;
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let uri = rr.relay_server;
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if (uri) {
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uri = getrUriFromRs(uri);
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} else {
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uri = getDefaultUri(true);
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}
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const uuid = rr.uuid;
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console.log(new Date() + ": Connecting to relay server: " + uri);
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const ws = new Websock(uri, false, this.handleVideoFrame.bind(this));
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await ws.open();
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console.log(new Date() + ": Connected to relay server");
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this._ws = ws;
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const request_relay = rendezvous.RequestRelay.fromPartial({
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licence_key: localStorage.getItem("key") || undefined,
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uuid,
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});
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ws.sendRendezvous({ request_relay });
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const secure = (await this.secure(pk)) || false;
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globals.pushEvent("connection_ready", { secure, direct: false });
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await this.msgLoop();
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}
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async secure(pk: Uint8Array | undefined) {
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if (pk) {
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const RS_PK = "OeVuKk5nlHiXp+APNn0Y3pC1Iwpwn44JGqrQCsWqmBw=";
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try {
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pk = await globals.verify(pk, RS_PK).catch();
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if (pk?.length != 32) {
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pk = undefined;
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}
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} catch (e) {
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console.error(e);
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pk = undefined;
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}
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if (!pk)
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console.error(
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"Handshake failed: invalid public key from rendezvous server"
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);
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}
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if (!pk) {
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// send an empty message out in case server is setting up secure and waiting for first message
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this._ws?.sendMessage({});
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return;
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}
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const msg = (await this._ws?.next()) as message.Message;
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let signedId: any = msg?.signed_id;
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if (!signedId) {
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console.error("Handshake failed: invalid message type");
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this._ws?.sendMessage({});
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return;
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}
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try {
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signedId = await globals.verify(signedId.id, Uint8Array.from(pk!));
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} catch (e) {
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console.error(e);
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// fall back to non-secure connection in case pk mismatch
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console.error("pk mismatch, fall back to non-secure");
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const public_key = message.PublicKey.fromPartial({});
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this._ws?.sendMessage({ public_key });
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return;
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}
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signedId = new TextDecoder().decode(signedId!);
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const tmp = signedId.split("\0");
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const id = tmp[0];
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let theirPk = tmp[1];
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if (id != this._id!) {
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console.error("Handshake failed: sign failure");
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this._ws?.sendMessage({});
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return;
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}
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theirPk = globals.decodeBase64(theirPk);
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if (theirPk.length != 32) {
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console.error(
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"Handshake failed: invalid public box key length from peer"
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);
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this._ws?.sendMessage({});
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return;
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}
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const [mySk, asymmetric_value] = globals.genBoxKeyPair();
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const secret_key = globals.genSecretKey();
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const symmetric_value = globals.seal(secret_key, theirPk, mySk);
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const public_key = message.PublicKey.fromPartial({
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asymmetric_value,
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symmetric_value,
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});
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this._ws?.sendMessage({ public_key });
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this._ws?.setSecretKey(secret_key);
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console.log("secured");
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return true;
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}
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async msgLoop() {
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while (true) {
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const msg = (await this._ws?.next()) as message.Message;
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if (msg?.hash) {
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this._hash = msg?.hash;
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if (!this._password)
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this.msgbox("input-password", "Password Required", "");
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this.login();
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} else if (msg?.test_delay) {
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const test_delay = msg?.test_delay;
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console.log(test_delay);
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if (!test_delay.from_client) {
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this._ws?.sendMessage({ test_delay });
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}
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} else if (msg?.login_response) {
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const r = msg?.login_response;
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if (r.error) {
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this.msgbox("error", "Error", r.error);
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} else if (r.peer_info) {
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this.handlePeerInfo(r.peer_info);
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}
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} else if (msg?.video_frame) {
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this.handleVideoFrame(msg?.video_frame!);
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} else if (msg?.clipboard) {
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const cb = msg?.clipboard;
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if (cb.compress) {
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const c = await decompress(cb.content);
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if (!c) continue;
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cb.content = c;
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}
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globals.pushEvent("clipboard", cb);
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} else if (msg?.cursor_data) {
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const cd = msg?.cursor_data;
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const c = await decompress(cd.colors);
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if (!c) continue;
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cd.colors = c;
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globals.pushEvent("cursor_data", cd);
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} else if (msg?.cursor_id) {
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globals.pushEvent("cursor_id", { id: msg?.cursor_id });
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} else if (msg?.cursor_position) {
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globals.pushEvent("cursor_position", msg?.cursor_position);
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} else if (msg?.misc) {
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this.handleMisc(msg?.misc);
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} else if (msg?.audio_frame) {
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//
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}
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}
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}
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msgbox(type_: string, title: string, text: string) {
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this._msgbox?.(type_, title, text);
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}
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draw(frame: any) {
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this._draw?.(frame);
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globals.draw(frame);
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}
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close() {
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this._msgs = [];
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clearInterval(this._interval);
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this._ws?.close();
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this._videoDecoder?.close();
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this._audioDecoder?.close();
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}
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refresh() {
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const misc = message.Misc.fromPartial({ refresh_video: true });
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this._ws?.sendMessage({ misc });
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}
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setMsgbox(callback: MsgboxCallback) {
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this._msgbox = callback;
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}
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setDraw(callback: DrawCallback) {
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this._draw = callback;
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}
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login(password: string | undefined = undefined) {
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if (password) {
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const salt = this._hash?.salt;
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let p = hash([password, salt!]);
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this._password = p;
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const challenge = this._hash?.challenge;
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p = hash([p, challenge!]);
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this.msgbox("connecting", "Connecting...", "Logging in...");
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this._sendLoginMessage(p);
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} else {
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let p = this._password;
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if (p) {
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const challenge = this._hash?.challenge;
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p = hash([p, challenge!]);
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}
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this._sendLoginMessage(p);
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}
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}
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async reconnect() {
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this.close();
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await this.start(this._id);
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}
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_sendLoginMessage(password: Uint8Array | undefined = undefined) {
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const login_request = message.LoginRequest.fromPartial({
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username: this._id!,
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my_id: "web", // to-do
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my_name: "web", // to-do
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password,
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option: this.getOptionMessage(),
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video_ack_required: true,
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});
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this._ws?.sendMessage({ login_request });
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}
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getOptionMessage(): message.OptionMessage | undefined {
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let n = 0;
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const msg = message.OptionMessage.fromPartial({});
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const q = this.getImageQualityEnum(this.getImageQuality(), true);
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const yes = message.OptionMessage_BoolOption.Yes;
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if (q != undefined) {
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msg.image_quality = q;
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n += 1;
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}
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if (this._options["show-remote-cursor"]) {
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msg.show_remote_cursor = yes;
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n += 1;
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}
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if (this._options["lock-after-session-end"]) {
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msg.lock_after_session_end = yes;
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n += 1;
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}
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if (this._options["privacy-mode"]) {
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msg.privacy_mode = yes;
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n += 1;
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}
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if (this._options["disable-audio"]) {
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msg.disable_audio = yes;
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n += 1;
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}
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if (this._options["disable-clipboard"]) {
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msg.disable_clipboard = yes;
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n += 1;
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}
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return n > 0 ? msg : undefined;
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}
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sendVideoReceived() {
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const misc = message.Misc.fromPartial({ video_received: true });
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this._ws?.sendMessage({ misc });
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}
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handleVideoFrame(vf: message.VideoFrame) {
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if (!this._firstFrame) {
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this.msgbox("", "", "");
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this._firstFrame = true;
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}
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if (vf.vp9s) {
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const dec = this._videoDecoder;
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var tm = new Date().getTime();
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var i = 0;
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const n = vf.vp9s?.frames.length;
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vf.vp9s.frames.forEach((f) => {
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dec.processFrame(f.data.slice(0).buffer, (ok: any) => {
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i++;
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if (i == n) this.sendVideoReceived();
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if (ok && dec.frameBuffer && n == i) {
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this.draw(dec.frameBuffer);
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const now = new Date().getTime();
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var elapsed = now - tm;
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this._videoTestSpeed[1] += elapsed;
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this._videoTestSpeed[0] += 1;
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if (this._videoTestSpeed[0] >= 30) {
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console.log(
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"video decoder: " +
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parseInt(
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"" + this._videoTestSpeed[1] / this._videoTestSpeed[0]
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)
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);
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this._videoTestSpeed = [0, 0];
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}
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}
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});
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});
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}
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}
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handlePeerInfo(pi: message.PeerInfo) {
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this._peerInfo = pi;
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if (pi.displays.length == 0) {
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this.msgbox("error", "Remote Error", "No Display");
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return;
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}
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this.msgbox("success", "Successful", "Connected, waiting for image...");
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globals.pushEvent("peer_info", pi);
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const p = this.shouldAutoLogin();
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if (p) this.inputOsPassword(p);
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const username = this.getOption("info")?.username;
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if (username && !pi.username) pi.username = username;
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this.setOption("info", pi);
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if (this.getRemember()) {
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if (this._password?.length) {
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const p = this._password.toString();
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if (p != this.getOption("password")) {
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this.setOption("password", p);
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console.log("remember password of " + this._id);
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}
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}
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} else {
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this.setOption("password", undefined);
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}
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}
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shouldAutoLogin(): string {
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const l = this.getOption("lock-after-session-end");
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const a = !!this.getOption("auto-login");
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const p = this.getOption("os-password");
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if (p && l && a) {
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return p;
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}
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return "";
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}
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handleMisc(misc: message.Misc) {
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if (misc.audio_format) {
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//
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} else if (misc.chat_message) {
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globals.pushEvent("chat", misc.chat_message.text);
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} else if (misc.permission_info) {
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const p = misc.permission_info;
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console.info("Change permission " + p.permission + " -> " + p.enabled);
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let name;
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switch (p.permission) {
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case message.PermissionInfo_Permission.Keyboard:
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name = "keyboard";
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break;
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case message.PermissionInfo_Permission.Clipboard:
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name = "clipboard";
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break;
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case message.PermissionInfo_Permission.Audio:
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name = "audio";
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break;
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default:
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return;
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}
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globals.pushEvent("permission", { [name]: p.enabled });
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} else if (misc.switch_display) {
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this.loadVideoDecoder();
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globals.pushEvent("switch_display", misc.switch_display);
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} else if (misc.close_reason) {
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this.msgbox("error", "Connection Error", misc.close_reason);
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}
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}
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getRemember(): Boolean {
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return this._options["remember"] || false;
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}
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setRemember(v: Boolean) {
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this.setOption("remember", v);
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}
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getOption(name: string): any {
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return this._options[name];
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}
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setOption(name: string, value: any) {
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if (value == undefined) {
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delete this._options[name];
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} else {
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this._options[name] = value;
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}
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this._options["tm"] = new Date().getTime();
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const peers = globals.getPeers();
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peers[this._id] = this._options;
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localStorage.setItem("peers", JSON.stringify(peers));
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}
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inputKey(
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name: string,
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down: boolean,
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press: boolean,
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alt: Boolean,
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ctrl: Boolean,
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shift: Boolean,
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command: Boolean
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) {
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const key_event = mapKey(name, globals.isDesktop());
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if (!key_event) return;
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if (alt && (name == "Alt" || name == 'RAlt')) {
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alt = false;
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}
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if (ctrl && (name == "Control" || name == 'RControl')) {
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ctrl = false;
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}
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if (shift && (name == "Shift" || name == 'RShift')) {
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shift = false;
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}
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if (command && (name == "Meta" || name == 'RWin')) {
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command = false;
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}
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key_event.down = down;
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key_event.press = press;
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key_event.modifiers = this.getMod(alt, ctrl, shift, command);
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this._ws?.sendMessage({ key_event });
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}
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ctrlAltDel() {
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const key_event = message.KeyEvent.fromPartial({ down: true });
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if (this._peerInfo?.platform == "Windows") {
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key_event.control_key = message.ControlKey.CtrlAltDel;
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} else {
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key_event.control_key = message.ControlKey.Delete;
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key_event.modifiers = this.getMod(true, true, false, false);
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}
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this._ws?.sendMessage({ key_event });
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}
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inputString(seq: string) {
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const key_event = message.KeyEvent.fromPartial({ seq });
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this._ws?.sendMessage({ key_event });
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}
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switchDisplay(display: number) {
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const switch_display = message.SwitchDisplay.fromPartial({ display });
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|
const misc = message.Misc.fromPartial({ switch_display });
|
|
this._ws?.sendMessage({ misc });
|
|
}
|
|
|
|
async inputOsPassword(seq: string) {
|
|
this.inputMouse();
|
|
await sleep(50);
|
|
this.inputMouse(0, 3, 3);
|
|
await sleep(50);
|
|
this.inputMouse(1 | (1 << 3));
|
|
this.inputMouse(2 | (1 << 3));
|
|
await sleep(1200);
|
|
const key_event = message.KeyEvent.fromPartial({ press: true, seq });
|
|
this._ws?.sendMessage({ key_event });
|
|
}
|
|
|
|
lockScreen() {
|
|
const key_event = message.KeyEvent.fromPartial({
|
|
down: true,
|
|
control_key: message.ControlKey.LockScreen,
|
|
});
|
|
this._ws?.sendMessage({ key_event });
|
|
}
|
|
|
|
getMod(alt: Boolean, ctrl: Boolean, shift: Boolean, command: Boolean) {
|
|
const mod: message.ControlKey[] = [];
|
|
if (alt) mod.push(message.ControlKey.Alt);
|
|
if (ctrl) mod.push(message.ControlKey.Control);
|
|
if (shift) mod.push(message.ControlKey.Shift);
|
|
if (command) mod.push(message.ControlKey.Meta);
|
|
return mod;
|
|
}
|
|
|
|
inputMouse(
|
|
mask: number = 0,
|
|
x: number = 0,
|
|
y: number = 0,
|
|
alt: Boolean = false,
|
|
ctrl: Boolean = false,
|
|
shift: Boolean = false,
|
|
command: Boolean = false
|
|
) {
|
|
const mouse_event = message.MouseEvent.fromPartial({
|
|
mask,
|
|
x,
|
|
y,
|
|
modifiers: this.getMod(alt, ctrl, shift, command),
|
|
});
|
|
this._ws?.sendMessage({ mouse_event });
|
|
}
|
|
|
|
toggleOption(name: string) {
|
|
const v = !this._options[name];
|
|
const option = message.OptionMessage.fromPartial({});
|
|
const v2 = v
|
|
? message.OptionMessage_BoolOption.Yes
|
|
: message.OptionMessage_BoolOption.No;
|
|
switch (name) {
|
|
case "show-remote-cursor":
|
|
option.show_remote_cursor = v2;
|
|
break;
|
|
case "disable-audio":
|
|
option.disable_audio = v2;
|
|
break;
|
|
case "disable-clipboard":
|
|
option.disable_clipboard = v2;
|
|
break;
|
|
case "lock-after-session-end":
|
|
option.lock_after_session_end = v2;
|
|
break;
|
|
case "privacy-mode":
|
|
option.privacy_mode = v2;
|
|
break;
|
|
case "block-input":
|
|
option.block_input = message.OptionMessage_BoolOption.Yes;
|
|
break;
|
|
case "unblock-input":
|
|
option.block_input = message.OptionMessage_BoolOption.No;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
if (name.indexOf("block-input") < 0) this.setOption(name, v);
|
|
const misc = message.Misc.fromPartial({ option });
|
|
this._ws?.sendMessage({ misc });
|
|
}
|
|
|
|
getImageQuality() {
|
|
return this.getOption("image-quality");
|
|
}
|
|
|
|
getImageQualityEnum(
|
|
value: string,
|
|
ignoreDefault: Boolean
|
|
): message.ImageQuality | undefined {
|
|
switch (value) {
|
|
case "low":
|
|
return message.ImageQuality.Low;
|
|
case "best":
|
|
return message.ImageQuality.Best;
|
|
case "balanced":
|
|
return ignoreDefault ? undefined : message.ImageQuality.Balanced;
|
|
default:
|
|
return undefined;
|
|
}
|
|
}
|
|
|
|
setImageQuality(value: string) {
|
|
this.setOption("image-quality", value);
|
|
const image_quality = this.getImageQualityEnum(value, false);
|
|
if (image_quality == undefined) return;
|
|
const option = message.OptionMessage.fromPartial({ image_quality });
|
|
const misc = message.Misc.fromPartial({ option });
|
|
this._ws?.sendMessage({ misc });
|
|
}
|
|
|
|
loadVideoDecoder() {
|
|
this._videoDecoder?.close();
|
|
loadVp9((decoder: any) => {
|
|
this._videoDecoder = decoder;
|
|
console.log("vp9 loaded");
|
|
console.log(decoder);
|
|
});
|
|
}
|
|
|
|
loadAudioDecoder() {
|
|
this._audioDecoder?.close();
|
|
loadOpus((decoder: any) => {
|
|
this._audioDecoder = decoder;
|
|
console.log("opus loaded");
|
|
});
|
|
}
|
|
}
|
|
|
|
// @ts-ignore
|
|
async function testDelay() {
|
|
const ws = new Websock(getDefaultUri(false), true);
|
|
await ws.open();
|
|
console.log(ws.latency());
|
|
}
|
|
|
|
function getDefaultUri(isRelay: Boolean = false): string {
|
|
const host = localStorage.getItem("custom-rendezvous-server");
|
|
return SCHEMA + (host || HOST) + ":" + (PORT + (isRelay ? 3 : 2));
|
|
}
|
|
|
|
function getrUriFromRs(uri: string): string {
|
|
if (uri.indexOf(":") > 0) {
|
|
const tmp = uri.split(":");
|
|
const port = parseInt(tmp[1]);
|
|
uri = tmp[0] + ":" + (port + 2);
|
|
} else {
|
|
uri += ":" + (PORT + 3);
|
|
}
|
|
return SCHEMA + uri;
|
|
}
|
|
|
|
function hash(datas: (string | Uint8Array)[]): Uint8Array {
|
|
const hasher = new sha256.Hash();
|
|
datas.forEach((data) => {
|
|
if (typeof data == "string") {
|
|
data = new TextEncoder().encode(data);
|
|
}
|
|
return hasher.update(data);
|
|
});
|
|
return hasher.digest();
|
|
}
|