rustdesk/src/globals.js

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import Connection from "./connection";
import _sodium from "libsodium-wrappers";
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import * as zstd from 'zstddec';
import { CursorData } from "./message";
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import { loadOpus, loadVp9 } from "./codec";
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var decompressor;
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var currentFrame = undefined;
var events = [];
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window.curConn = undefined;
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window.getRgba = () => {
const tmp = currentFrame;
currentFrame = undefined;
return tmp || null;
}
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window.getLanguage = () => navigator.language;
export function msgbox(type, title, text) {
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if (!events) return;
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if (!type || (type == 'error' && !text)) return;
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const text2 = text.toLowerCase();
var hasRetry = type == "error"
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&& title == "Connection Error"
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&& text2.indexOf("offline") < 0
&& text2.indexOf("exist") < 0
&& text2.indexOf("handshake") < 0
&& text2.indexOf("failed") < 0
&& text2.indexOf("resolve") < 0
&& text2.indexOf("mismatch") < 0
&& text2.indexOf("manually") < 0;
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events.push({ name: 'msgbox', type, title, text, hasRetry });
}
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function jsonfyForDart(payload) {
var tmp = {};
for (const [key, value] of Object.entries(payload)) {
if (!key) continue;
var newName = '';
for (var i = 0; i < key.length; ++i) {
var ch = key[i];
if (ch.toUpperCase() == ch) {
newName += '_' + ch.toLowerCase();
} else {
newName += ch;
}
}
tmp[newName] = value instanceof Uint8Array ? '[' + value.toString() + ']' : JSON.stringify(value);
}
return tmp;
}
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export function pushEvent(name, payload) {
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if (!events) return;
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payload = jsonfyForDart(payload);
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payload.name = name;
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events.push(payload);
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}
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const yuvWorker = new Worker("./yuv.js");
yuvWorker.onmessage = (e) => {
currentFrame = e.data;
}
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export function draw(frame) {
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yuvWorker.postMessage(frame);
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}
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export function setConn(conn) {
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window.curConn = conn;
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}
export function getConn() {
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return window.curConn;
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}
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export async function startConn(id) {
try {
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currentFrame = undefined;
events = [];
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await curConn.start(id);
} catch (e) {
console.log(e);
msgbox('error', 'Error', String(e));
}
}
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export function close() {
getConn()?.close();
setConn(undefined);
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currentFrame = undefined;
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events = undefined;
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}
export function newConn() {
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window.curConn?.close();
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const conn = new Connection();
setConn(conn);
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return conn;
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}
let sodium;
export async function verify(signed, pk) {
if (!sodium) {
await _sodium.ready;
sodium = _sodium;
}
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if (typeof pk == 'string') {
pk = decodeBase64(pk);
}
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return sodium.crypto_sign_open(signed, pk);
}
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export function decodeBase64(pk) {
return sodium.from_base64(pk, sodium.base64_variants.ORIGINAL);
}
export function genBoxKeyPair() {
const pair = sodium.crypto_box_keypair();
const sk = pair.privateKey;
const pk = pair.publicKey;
return [sk, pk];
}
export function genSecretKey() {
return sodium.crypto_secretbox_keygen();
}
export function seal(unsigned, theirPk, ourSk) {
const nonce = Uint8Array.from(Array(24).fill(0));
return sodium.crypto_box_easy(unsigned, nonce, theirPk, ourSk);
}
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function makeOnce(value) {
var byteArray = Array(24).fill(0);
for (var index = 0; index < byteArray.length && value > 0; index++) {
var byte = value & 0xff;
byteArray[index] = byte;
value = (value - byte) / 256;
}
return Uint8Array.from(byteArray);
};
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export function encrypt(unsigned, nonce, key) {
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return sodium.crypto_secretbox_easy(unsigned, makeOnce(nonce), key);
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}
export function decrypt(signed, nonce, key) {
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return sodium.crypto_secretbox_open_easy(signed, makeOnce(nonce), key);
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}
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export async function decompress(compressedArray) {
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const MAX = 1024 * 1024 * 64;
const MIN = 1024 * 1024;
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let n = 30 * compressedArray.length;
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if (n > MAX) {
n = MAX;
}
if (n < MIN) {
n = MIN;
}
try {
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if (!decompressor) {
await initZstd();
}
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return decompressor.decode(compressedArray, n);
} catch (e) {
console.error('decompress failed: ' + e);
}
}
window.setByName = (name, value) => {
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try {
value = JSON.parse(value);
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} catch (e) { }
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switch (name) {
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case 'connect':
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newConn();
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startConn(String(value));
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break;
case 'login':
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curConn.login(value.password, value.remember || false);
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break;
case 'close':
close();
break;
case 'refresh':
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curConn.refresh();
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break;
case 'reconnect':
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curConn.reconnect();
break;
case 'toggle_option':
curConn.toggleOption(value);
break;
case 'image_quality':
curConn.setImageQuality(value);
break;
case 'lock_screen':
curConn.lockScreen();
break;
case 'ctrl_alt_del':
curConn.ctrlAltDe();
break;
case 'switch_display':
curConn.switchDisplay(value);
break;
case 'remove':
const peers = JSON.parse(localStorage.getItem('peers') || '{}');
delete peers[value];
localStorage.setItem('peers', JSON.stringify(peers));
break;
case 'input_key':
curConn.inputKey(value.name, value.alt || false, value.ctrl || false, value.shift || false, value.command || false);
break;
case 'input_string':
curConn.inputString(value);
break;
case 'send_mouse':
let mask = 0;
switch (value.type) {
case 'down':
mask = 1;
break;
case 'up':
mask = 2;
break;
case 'wheel':
mask = 3;
break;
}
switch (value.buttons) {
case 'left':
mask |= 1 << 3;
break;
case 'right':
mask |= 2 << 3;
break;
case 'wheel':
mask |= 4 << 3;
}
curConn.inputMouse(mask, value.x || 0, value.y || 0, value.alt || false, value.ctrl || false, value.shift || false, value.command || false);
break;
case 'option':
localStorage.setItem(value.name, value.value);
break;
case 'peer_option':
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curConn.setOption(value.name, value.value);
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break;
case 'input_os_password':
curConn.inputOsPassword(value, true);
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break;
default:
break;
}
}
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window.getByName = (name, arg) => {
try {
arg = JSON.parse(arg);
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} catch (e) { }
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switch (name) {
case 'peers':
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return localStorage.getItem('peers') || '[]';
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break;
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case 'remote_id':
return localStorage.getItem('remote-id') || '';
break;
case 'remember':
return curConn.getRemember();
break;
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case 'event':
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if (events && events.length) {
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const e = events[0];
events.splice(0, 1);
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return JSON.stringify(e);
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}
break;
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case 'toggle_option':
return curConn.getOption(arg);
break;
case 'option':
return localStorage.getItem(arg);
break;
case 'image_quality':
return curConn.getImageQuality();
break;
case 'translate':
return arg.text;
break;
case 'peer_option':
return curConn.getOption(arg);
break;
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case 'test_if_valid_server':
break;
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}
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return '';
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}
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window.init = async () => {
await initZstd();
}
async function initZstd() {
loadOpus(() => { });
loadVp9(() => { });
const tmp = new zstd.ZSTDDecoder();
await tmp.init();
console.log('zstd ready');
decompressor = tmp;
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}