Use tailscale provided by CheerpX directly, instead of vendoring it
This commit is contained in:
Yuri Iozzelli
Alessandro Pignotti
parent
09cf54e003
commit
73d3ab20a8
8 changed files with 74 additions and 2194 deletions
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@ -36,10 +36,7 @@
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<script src="serviceWorker.js"></script>
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<script src="./xterm/xterm.js"></script>
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<script src="./xterm/xterm-addon-fit.js"></script>
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<script>
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window.networkInterface = { ready: false };
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</script>
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<script type="module" src="network.js"></script>
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<script src="network.js"></script>
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</head>
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<body style="margin:0;height:100%;background:black;color:white;overflow:hidden; display:flex; flex-direction: column; justify-content: space-between; height: 100%;">
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@ -262,8 +259,12 @@ __ __ _ __ ____ __
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return;
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}
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let networkInterface = setupNetworkInterface();
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async function runTest(cx)
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{
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registerNetworkLogin(cx, networkInterface);
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term.scrollToBottom();
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async function cxLogAndRun(cheerpx, cmd, args, env)
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149
network.js
149
network.js
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@ -1,85 +1,74 @@
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import { State } from "./tun/tailscale_tun.js";
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import { autoConf } from "./tun/tailscale_tun_auto.js";
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function setupNetworkInterface()
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{
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let params = new URLSearchParams("?"+window.location.hash.substr(1));
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let authKey = params.get("authKey") || undefined;
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let controlUrl = params.get("controlUrl") || undefined;
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console.log(authKey, controlUrl);
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let loginElemUrl = controlUrl ? null : "https://login.tailscale.com/admin/machines";
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let params = new URLSearchParams("?"+window.location.hash.substr(1));
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let authKey = params.get("authKey") || undefined;
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let controlUrl = params.get("controlUrl") || undefined;
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console.log(authKey, controlUrl);
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let loginElemUrl = controlUrl ? null : "https://login.tailscale.com/admin/machines";
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let resolveLogin = null;
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let loginPromise = new Promise((f,r) => {
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resolveLogin = f;
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});
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const loginElem = document.getElementById("loginLink");
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const statusElem = document.getElementById("networkStatus");
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const loginUrlCb = (url) => {
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loginElem.href = url;
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loginElem.target = "_blank";
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statusElem.innerHTML = "Tailscale Login";
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resolveLogin(url);
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};
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const stateUpdateCb = (state) => {
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switch(state)
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{
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case State.NeedsLogin:
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{
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break;
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}
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case State.Running:
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{
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if (loginElemUrl) {
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loginElem.href = loginElemUrl;
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}
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break;
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}
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case State.Starting:
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{
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break;
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}
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case State.Stopped:
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{
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break;
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}
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case State.NoState:
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{
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break;
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}
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}
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};
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const netmapUpdateCb = (map) => {
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const ip = map.self.addresses[0];
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statusElem.innerHTML = "IP: "+ip;
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};
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const { tcpSocket, udpSocket, up } = await autoConf({
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loginUrlCb,
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stateUpdateCb,
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netmapUpdateCb,
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authKey,
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controlUrl,
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});
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window.networkInterface.tcpSocket = tcpSocket;
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window.networkInterface.udpSocket = udpSocket;
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window.networkInterface.ready = true;
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loginElem.style.cursor = "pointer";
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statusElem.style.color = "white";
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if (authKey) {
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if (loginElemUrl) {
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loginElem.href = loginElemUrl;
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let resolveLogin = null;
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let loginPromise = new Promise((f,r) => {
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resolveLogin = f;
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});
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const loginElem = document.getElementById("loginLink");
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const statusElem = document.getElementById("networkStatus");
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const loginUrlCb = (url) => {
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loginElem.href = url;
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loginElem.target = "_blank";
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}
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up();
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} else {
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loginElem.onclick = () => {
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loginElem.onclick = null;
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statusElem.innerHTML = "Downloading network code...";
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const w = window.open("login.html", "_blank");
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async function waitLogin() {
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await up();
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statusElem.innerHTML = "Starting login...";
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const url = await loginPromise;
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w.location.href = url;
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statusElem.innerHTML = "Tailscale Login";
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resolveLogin(url);
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};
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const stateUpdateCb = (state) => {
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switch(state)
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{
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case 6 /*Running*/:
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{
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if (loginElemUrl) {
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loginElem.href = loginElemUrl;
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}
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break;
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}
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}
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waitLogin();
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};
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const netmapUpdateCb = (map) => {
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const ip = map.self.addresses[0];
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statusElem.innerHTML = "IP: "+ip;
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};
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loginElem.style.cursor = "pointer";
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statusElem.style.color = "white";
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return {
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loginUrlCb,
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stateUpdateCb,
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netmapUpdateCb,
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authKey,
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controlUrl,
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loginElem,
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statusElem,
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loginElemUrl,
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loginPromise,
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};
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}
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function registerNetworkLogin(cx, { authKey, statusElem, loginElem, loginElemUrl, loginPromise })
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{
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if (authKey) {
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if (loginElemUrl) {
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loginElem.href = loginElemUrl;
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loginElem.target = "_blank";
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}
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cx.networkLogin();
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} else {
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loginElem.onclick = () => {
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loginElem.onclick = null;
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statusElem.innerHTML = "Downloading network code...";
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const w = window.open("login.html", "_blank");
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async function waitLogin() {
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await cx.networkLogin();
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statusElem.innerHTML = "Starting login...";
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const url = await loginPromise;
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w.location.href = url;
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}
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waitLogin();
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};
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}
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}
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1372
tun/ipstack.js
1372
tun/ipstack.js
File diff suppressed because it is too large
Load diff
BIN
tun/ipstack.wasm
BIN
tun/ipstack.wasm
Binary file not shown.
Binary file not shown.
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@ -1,107 +0,0 @@
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import "./wasm_exec.js";
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import ipStackAwait from "./ipstack.js";
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export const State = {
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NoState: 0,
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InUseOtherUser: 1,
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NeedsLogin: 2,
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NeedsMachineAuth: 3,
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Stopped: 4,
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Starting: 5,
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Running: 6,
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};
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export async function init() {
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const {IpStack} = await ipStackAwait();
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IpStack.init();
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const listeners = {
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onstateupdate: () => {},
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onnetmap: () => {},
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onloginurl: () => {},
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}
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let ipn = null;
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let localIp = null;
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let dnsIp = null;
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const lazyRunIpn = async () => {
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const wasmUrl = new URL("tailscale.wasm", import.meta.url);
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const go = new window.Go();
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let {instance} = await fetch(wasmUrl).then(x => x.arrayBuffer()).then(x => WebAssembly.instantiate(x,go.importObject));
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go.run(instance);
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const sessionStateStorage = {
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setState(id, value) {
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window.sessionStorage[`ipn-state-${id}`] = value
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},
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getState(id) {
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return window.sessionStorage[`ipn-state-${id}`] || ""
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},
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}
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ipn = newIPN({
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// Persist IPN state in sessionStorage in development, so that we don't need
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// to re-authorize every time we reload the page.
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//stateStorage: sessionStateStorage,
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});
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const setupIpStack = () => {
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ipn.tun.onmessage = function(ev) {
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IpStack.input(ev.data)
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};
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IpStack.output(function(p){
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ipn.tun.postMessage(p, [p.buffer]);
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});
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};
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setupIpStack();
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ipn.run({
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notifyState: (s) => listeners.onstateupdate(s),
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notifyNetMap: (s) => {
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const netMap = JSON.parse(s);
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listeners.onnetmap(netMap);
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const newLocalIp = netMap.self.addresses[0];
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if (localIp != newLocalIp)
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{
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localIp = newLocalIp;
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try{
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IpStack.up({localIp, dnsIp, ipMap: {
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["127.0.0.53"]: dnsIp,
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[dnsIp]: "127.0.0.53",
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}});
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}catch(e){
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console.log(e);
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debugger;
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}
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}
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},
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notifyBrowseToURL: (l) => listeners.onloginurl(l),
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});
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};
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return {
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tcpSocket: IpStack.TCPSocket.create,
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udpSocket: IpStack.UDPSocket.create,
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parseIP: IpStack.parseIP,
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resolve: IpStack.resolve,
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up: async (conf) => {
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if (ipn == null) {
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await lazyRunIpn();
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}
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ipn.up(conf);
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localIp = null;
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dnsIp = conf.dnsIp || "127.0.0.53";
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},
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down: () => {
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ipn.down();
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IpStack.down();
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},
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login: () => ipn.login(),
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logout: () => ipn.logout(),
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listeners
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};
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}
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@ -1,77 +0,0 @@
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import {State, init} from "./tailscale_tun.js";
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export async function autoConf({loginUrlCb, stateUpdateCb, netmapUpdateCb, controlUrl, authKey}) {
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const { tcpSocket, udpSocket, parseIP, resolve, up, down, login, logout, listeners } = await init();
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const settings = {
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controlUrl: controlUrl,
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authKey: authKey,
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exitNodeIp: undefined,
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dnsIp: undefined,
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wantsRunning: true,
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};
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listeners.onstateupdate = (state) => {
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stateUpdateCb(state);
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switch(state)
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{
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case State.NeedsLogin:
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{
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login();
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break;
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}
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case State.Running:
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{
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break;
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}
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case State.Starting:
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{
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break;
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}
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case State.Stopped:
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{
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break;
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}
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case State.NoState:
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{
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up(settings);
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break;
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}
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default:
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{
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console.log(state);
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break;
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}
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}
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};
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listeners.onloginurl = (login) => {
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console.log("login url:",login);
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loginUrlCb(login);
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};
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listeners.onnetmap = (map) => {
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netmapUpdateCb(map);
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if (!settings.exitNodeIp) {
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for (let p of map.peers) {
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if (p.online && p.exitNode) {
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settings.exitNodeIp = p.addresses[0];
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settings.dnsIp = "8.8.8.8";
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up(settings);
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}
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}
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}
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};
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return {
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tcpSocket,
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udpSocket,
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parseIP,
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resolve,
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up: async () => {
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await up(settings);
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},
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}
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}
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554
tun/wasm_exec.js
554
tun/wasm_exec.js
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@ -1,554 +0,0 @@
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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"use strict";
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(() => {
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const enosys = () => {
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const err = new Error("not implemented");
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err.code = "ENOSYS";
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return err;
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};
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if (!globalThis.fs) {
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let outputBuf = "";
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globalThis.fs = {
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constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
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writeSync(fd, buf) {
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outputBuf += decoder.decode(buf);
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const nl = outputBuf.lastIndexOf("\n");
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if (nl != -1) {
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console.log(outputBuf.substr(0, nl));
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outputBuf = outputBuf.substr(nl + 1);
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}
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return buf.length;
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},
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write(fd, buf, offset, length, position, callback) {
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if (offset !== 0 || length !== buf.length || position !== null) {
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callback(enosys());
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return;
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}
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const n = this.writeSync(fd, buf);
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callback(null, n);
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},
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chmod(path, mode, callback) { callback(enosys()); },
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chown(path, uid, gid, callback) { callback(enosys()); },
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close(fd, callback) { callback(enosys()); },
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fchmod(fd, mode, callback) { callback(enosys()); },
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fchown(fd, uid, gid, callback) { callback(enosys()); },
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fstat(fd, callback) { callback(enosys()); },
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fsync(fd, callback) { callback(null); },
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ftruncate(fd, length, callback) { callback(enosys()); },
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lchown(path, uid, gid, callback) { callback(enosys()); },
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link(path, link, callback) { callback(enosys()); },
|
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lstat(path, callback) { callback(enosys()); },
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mkdir(path, perm, callback) { callback(enosys()); },
|
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open(path, flags, mode, callback) { callback(enosys()); },
|
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read(fd, buffer, offset, length, position, callback) { callback(enosys()); },
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readdir(path, callback) { callback(enosys()); },
|
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readlink(path, callback) { callback(enosys()); },
|
||||
rename(from, to, callback) { callback(enosys()); },
|
||||
rmdir(path, callback) { callback(enosys()); },
|
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stat(path, callback) { callback(enosys()); },
|
||||
symlink(path, link, callback) { callback(enosys()); },
|
||||
truncate(path, length, callback) { callback(enosys()); },
|
||||
unlink(path, callback) { callback(enosys()); },
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||||
utimes(path, atime, mtime, callback) { callback(enosys()); },
|
||||
};
|
||||
}
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||||
|
||||
if (!globalThis.process) {
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||||
globalThis.process = {
|
||||
getuid() { return -1; },
|
||||
getgid() { return -1; },
|
||||
geteuid() { return -1; },
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||||
getegid() { return -1; },
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getgroups() { throw enosys(); },
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pid: -1,
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||||
ppid: -1,
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||||
umask() { throw enosys(); },
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||||
cwd() { throw enosys(); },
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||||
chdir() { throw enosys(); },
|
||||
}
|
||||
}
|
||||
|
||||
if (!globalThis.crypto) {
|
||||
throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)");
|
||||
}
|
||||
|
||||
if (!globalThis.performance) {
|
||||
throw new Error("globalThis.performance is not available, polyfill required (performance.now only)");
|
||||
}
|
||||
|
||||
if (!globalThis.TextEncoder) {
|
||||
throw new Error("globalThis.TextEncoder is not available, polyfill required");
|
||||
}
|
||||
|
||||
if (!globalThis.TextDecoder) {
|
||||
throw new Error("globalThis.TextDecoder is not available, polyfill required");
|
||||
}
|
||||
|
||||
const encoder = new TextEncoder("utf-8");
|
||||
const decoder = new TextDecoder("utf-8");
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||||
|
||||
globalThis.Go = class {
|
||||
constructor() {
|
||||
this.argv = ["js"];
|
||||
this.env = {};
|
||||
this.exit = (code) => {
|
||||
if (code !== 0) {
|
||||
console.warn("exit code:", code);
|
||||
}
|
||||
};
|
||||
this._exitPromise = new Promise((resolve) => {
|
||||
this._resolveExitPromise = resolve;
|
||||
});
|
||||
this._pendingEvent = null;
|
||||
this._scheduledTimeouts = new Map();
|
||||
this._nextCallbackTimeoutID = 1;
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||||
|
||||
const setInt64 = (addr, v) => {
|
||||
this.mem.setUint32(addr + 0, v, true);
|
||||
this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
|
||||
}
|
||||
|
||||
const getInt64 = (addr) => {
|
||||
const low = this.mem.getUint32(addr + 0, true);
|
||||
const high = this.mem.getInt32(addr + 4, true);
|
||||
return low + high * 4294967296;
|
||||
}
|
||||
|
||||
const loadValue = (addr) => {
|
||||
const f = this.mem.getFloat64(addr, true);
|
||||
if (f === 0) {
|
||||
return undefined;
|
||||
}
|
||||
if (!isNaN(f)) {
|
||||
return f;
|
||||
}
|
||||
|
||||
const id = this.mem.getUint32(addr, true);
|
||||
return this._values[id];
|
||||
}
|
||||
|
||||
const storeValue = (addr, v) => {
|
||||
const nanHead = 0x7FF80000;
|
||||
|
||||
if (typeof v === "number" && v !== 0) {
|
||||
if (isNaN(v)) {
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 0, true);
|
||||
return;
|
||||
}
|
||||
this.mem.setFloat64(addr, v, true);
|
||||
return;
|
||||
}
|
||||
|
||||
if (v === undefined) {
|
||||
this.mem.setFloat64(addr, 0, true);
|
||||
return;
|
||||
}
|
||||
|
||||
let id = this._ids.get(v);
|
||||
if (id === undefined) {
|
||||
id = this._idPool.pop();
|
||||
if (id === undefined) {
|
||||
id = this._values.length;
|
||||
}
|
||||
this._values[id] = v;
|
||||
this._goRefCounts[id] = 0;
|
||||
this._ids.set(v, id);
|
||||
}
|
||||
this._goRefCounts[id]++;
|
||||
let typeFlag = 0;
|
||||
switch (typeof v) {
|
||||
case "object":
|
||||
if (v !== null) {
|
||||
typeFlag = 1;
|
||||
}
|
||||
break;
|
||||
case "string":
|
||||
typeFlag = 2;
|
||||
break;
|
||||
case "symbol":
|
||||
typeFlag = 3;
|
||||
break;
|
||||
case "function":
|
||||
typeFlag = 4;
|
||||
break;
|
||||
}
|
||||
this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
|
||||
this.mem.setUint32(addr, id, true);
|
||||
}
|
||||
|
||||
const loadSlice = (addr) => {
|
||||
const array = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
||||
return new Uint8Array(this._inst.exports.mem.buffer, array, len);
|
||||
}
|
||||
|
||||
const loadSliceOfValues = (addr) => {
|
||||
const array = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
||||
const a = new Array(len);
|
||||
for (let i = 0; i < len; i++) {
|
||||
a[i] = loadValue(array + i * 8);
|
||||
}
|
||||
return a;
|
||||
}
|
||||
|
||||
const loadString = (addr) => {
|
||||
const saddr = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
||||
return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
|
||||
}
|
||||
|
||||
const timeOrigin = Date.now() - performance.now();
|
||||
this.importObject = {
|
||||
go: {
|
||||
// Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters)
|
||||
// may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported
|
||||
// function. A goroutine can switch to a new stack if the current stack is too small (see morestack function).
|
||||
// This changes the SP, thus we have to update the SP used by the imported function.
|
||||
|
||||
// func wasmExit(code int32)
|
||||
"runtime.wasmExit": (sp) => {
|
||||
sp >>>= 0;
|
||||
const code = this.mem.getInt32(sp + 8, true);
|
||||
this.exited = true;
|
||||
delete this._inst;
|
||||
delete this._values;
|
||||
delete this._goRefCounts;
|
||||
delete this._ids;
|
||||
delete this._idPool;
|
||||
this.exit(code);
|
||||
},
|
||||
|
||||
// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
|
||||
"runtime.wasmWrite": (sp) => {
|
||||
sp >>>= 0;
|
||||
const fd = getInt64(sp + 8);
|
||||
const p = getInt64(sp + 16);
|
||||
const n = this.mem.getInt32(sp + 24, true);
|
||||
fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
|
||||
},
|
||||
|
||||
// func resetMemoryDataView()
|
||||
"runtime.resetMemoryDataView": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
},
|
||||
|
||||
// func nanotime1() int64
|
||||
"runtime.nanotime1": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
|
||||
},
|
||||
|
||||
// func walltime() (sec int64, nsec int32)
|
||||
"runtime.walltime": (sp) => {
|
||||
sp >>>= 0;
|
||||
const msec = (new Date).getTime();
|
||||
setInt64(sp + 8, msec / 1000);
|
||||
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
|
||||
},
|
||||
|
||||
// func scheduleTimeoutEvent(delay int64) int32
|
||||
"runtime.scheduleTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this._nextCallbackTimeoutID;
|
||||
this._nextCallbackTimeoutID++;
|
||||
this._scheduledTimeouts.set(id, setTimeout(
|
||||
() => {
|
||||
this._resume();
|
||||
while (this._scheduledTimeouts.has(id)) {
|
||||
// for some reason Go failed to register the timeout event, log and try again
|
||||
// (temporary workaround for https://github.com/golang/go/issues/28975)
|
||||
console.warn("scheduleTimeoutEvent: missed timeout event");
|
||||
this._resume();
|
||||
}
|
||||
},
|
||||
getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early
|
||||
));
|
||||
this.mem.setInt32(sp + 16, id, true);
|
||||
},
|
||||
|
||||
// func clearTimeoutEvent(id int32)
|
||||
"runtime.clearTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getInt32(sp + 8, true);
|
||||
clearTimeout(this._scheduledTimeouts.get(id));
|
||||
this._scheduledTimeouts.delete(id);
|
||||
},
|
||||
|
||||
// func getRandomData(r []byte)
|
||||
"runtime.getRandomData": (sp) => {
|
||||
sp >>>= 0;
|
||||
crypto.getRandomValues(loadSlice(sp + 8));
|
||||
},
|
||||
|
||||
// func finalizeRef(v ref)
|
||||
"syscall/js.finalizeRef": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getUint32(sp + 8, true);
|
||||
this._goRefCounts[id]--;
|
||||
if (this._goRefCounts[id] === 0) {
|
||||
const v = this._values[id];
|
||||
this._values[id] = null;
|
||||
this._ids.delete(v);
|
||||
this._idPool.push(id);
|
||||
}
|
||||
},
|
||||
|
||||
// func stringVal(value string) ref
|
||||
"syscall/js.stringVal": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, loadString(sp + 8));
|
||||
},
|
||||
|
||||
// func valueGet(v ref, p string) ref
|
||||
"syscall/js.valueGet": (sp) => {
|
||||
sp >>>= 0;
|
||||
const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16));
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 32, result);
|
||||
},
|
||||
|
||||
// func valueSet(v ref, p string, x ref)
|
||||
"syscall/js.valueSet": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
|
||||
},
|
||||
|
||||
// func valueDelete(v ref, p string)
|
||||
"syscall/js.valueDelete": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16));
|
||||
},
|
||||
|
||||
// func valueIndex(v ref, i int) ref
|
||||
"syscall/js.valueIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
|
||||
},
|
||||
|
||||
// valueSetIndex(v ref, i int, x ref)
|
||||
"syscall/js.valueSetIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
|
||||
},
|
||||
|
||||
// func valueCall(v ref, m string, args []ref) (ref, bool)
|
||||
"syscall/js.valueCall": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const m = Reflect.get(v, loadString(sp + 16));
|
||||
const args = loadSliceOfValues(sp + 32);
|
||||
const result = Reflect.apply(m, v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, result);
|
||||
this.mem.setUint8(sp + 64, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, err);
|
||||
this.mem.setUint8(sp + 64, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueInvoke(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueInvoke": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.apply(v, undefined, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueNew(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueNew": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.construct(v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueLength(v ref) int
|
||||
"syscall/js.valueLength": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
|
||||
},
|
||||
|
||||
// valuePrepareString(v ref) (ref, int)
|
||||
"syscall/js.valuePrepareString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = encoder.encode(String(loadValue(sp + 8)));
|
||||
storeValue(sp + 16, str);
|
||||
setInt64(sp + 24, str.length);
|
||||
},
|
||||
|
||||
// valueLoadString(v ref, b []byte)
|
||||
"syscall/js.valueLoadString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = loadValue(sp + 8);
|
||||
loadSlice(sp + 16).set(str);
|
||||
},
|
||||
|
||||
// func valueInstanceOf(v ref, t ref) bool
|
||||
"syscall/js.valueInstanceOf": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0);
|
||||
},
|
||||
|
||||
// func copyBytesToGo(dst []byte, src ref) (int, bool)
|
||||
"syscall/js.copyBytesToGo": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadSlice(sp + 8);
|
||||
const src = loadValue(sp + 32);
|
||||
if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
// func copyBytesToJS(dst ref, src []byte) (int, bool)
|
||||
"syscall/js.copyBytesToJS": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadValue(sp + 8);
|
||||
const src = loadSlice(sp + 16);
|
||||
if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
"debug": (value) => {
|
||||
console.log(value);
|
||||
},
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
async run(instance) {
|
||||
if (!(instance instanceof WebAssembly.Instance)) {
|
||||
throw new Error("Go.run: WebAssembly.Instance expected");
|
||||
}
|
||||
this._inst = instance;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
this._values = [ // JS values that Go currently has references to, indexed by reference id
|
||||
NaN,
|
||||
0,
|
||||
null,
|
||||
true,
|
||||
false,
|
||||
globalThis,
|
||||
this,
|
||||
];
|
||||
this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id
|
||||
this._ids = new Map([ // mapping from JS values to reference ids
|
||||
[0, 1],
|
||||
[null, 2],
|
||||
[true, 3],
|
||||
[false, 4],
|
||||
[globalThis, 5],
|
||||
[this, 6],
|
||||
]);
|
||||
this._idPool = []; // unused ids that have been garbage collected
|
||||
this.exited = false; // whether the Go program has exited
|
||||
|
||||
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
|
||||
let offset = 4096;
|
||||
|
||||
const strPtr = (str) => {
|
||||
const ptr = offset;
|
||||
const bytes = encoder.encode(str + "\0");
|
||||
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
|
||||
offset += bytes.length;
|
||||
if (offset % 8 !== 0) {
|
||||
offset += 8 - (offset % 8);
|
||||
}
|
||||
return ptr;
|
||||
};
|
||||
|
||||
const argc = this.argv.length;
|
||||
|
||||
const argvPtrs = [];
|
||||
this.argv.forEach((arg) => {
|
||||
argvPtrs.push(strPtr(arg));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const keys = Object.keys(this.env).sort();
|
||||
keys.forEach((key) => {
|
||||
argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const argv = offset;
|
||||
argvPtrs.forEach((ptr) => {
|
||||
this.mem.setUint32(offset, ptr, true);
|
||||
this.mem.setUint32(offset + 4, 0, true);
|
||||
offset += 8;
|
||||
});
|
||||
|
||||
// The linker guarantees global data starts from at least wasmMinDataAddr.
|
||||
// Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr.
|
||||
const wasmMinDataAddr = 4096 + 8192;
|
||||
if (offset >= wasmMinDataAddr) {
|
||||
throw new Error("total length of command line and environment variables exceeds limit");
|
||||
}
|
||||
|
||||
this._inst.exports.run(argc, argv);
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
await this._exitPromise;
|
||||
}
|
||||
|
||||
_resume() {
|
||||
if (this.exited) {
|
||||
throw new Error("Go program has already exited");
|
||||
}
|
||||
this._inst.exports.resume();
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
}
|
||||
|
||||
_makeFuncWrapper(id) {
|
||||
const go = this;
|
||||
return function () {
|
||||
const event = { id: id, this: this, args: arguments };
|
||||
go._pendingEvent = event;
|
||||
go._resume();
|
||||
return event.result;
|
||||
};
|
||||
}
|
||||
}
|
||||
})();
|
||||
Loading…
Reference in a new issue