feat: one-page panel - shell with Машины, Терминал and Настройки, pages as fragments, forms sent in place
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redtea committed
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// Scripts of the pages the shell shows as fragments, as modules: mount(root,
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// S) runs when the fragment is put in place, with S the module's scope -
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// timers, requests and listeners that end when it is replaced or closed.
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(function () {
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'use strict';
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const CHECK = '<svg width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6 9 17l-5-5"/></svg>';
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function copy(text) {
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if (navigator.clipboard && window.isSecureContext) return navigator.clipboard.writeText(text);
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const ta = document.createElement('textarea');
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ta.value = text; ta.style.cssText = 'position:fixed;top:0;left:0;opacity:0';
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document.body.appendChild(ta); ta.select();
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const ok = document.execCommand('copy'); ta.remove();
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return ok ? Promise.resolve() : Promise.reject(new Error('нет доступа к буферу'));
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}
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App.register('settings', {
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mount(root) {
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root.querySelectorAll('.copybox .copy').forEach(b => {
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const icon = b.innerHTML;
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b.onclick = () => copy(root.querySelector('#' + b.dataset.copy).textContent.trim()).then(() => {
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b.innerHTML = CHECK; b.classList.add('done'); b.title = 'Скопировано';
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setTimeout(() => { b.innerHTML = icon; b.classList.remove('done'); b.title = 'Скопировать'; }, 1500);
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}, e => alert('Не скопировалось: ' + e.message));
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});
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if (window.UsersTable) window.UsersTable.mount(root);
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}
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});
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// The machines list keeps its status column live; nothing is asked while
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// the tab is hidden.
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App.register('dashboard', {
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mount(root, S) {
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var setTimeout = S.timeout, clearTimeout = S.clear, fetch = S.fetch;
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var rows = {};
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root.querySelectorAll('tr[data-agent]').forEach(function (tr) { rows[tr.dataset.agent] = tr; });
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var timer = null, busy = false;
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function schedule() {
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clearTimeout(timer);
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if (!document.hidden) timer = setTimeout(load, 5000);
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}
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function load() {
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if (busy || document.hidden) return;
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busy = true;
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fetch('/api/panel/agents/presence', {credentials: 'same-origin'})
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.then(function (r) { return r.ok ? r.json() : []; })
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.then(function (list) {
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list.forEach(function (a) {
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var tr = rows[a.id];
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if (!tr) return;
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tr.querySelector('.dot').className = 'dot ' + (a.online ? 'on' : 'off');
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tr.querySelector('.state').textContent = a.online ? 'online' : 'offline';
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tr.querySelector('.seen').textContent = a.seen;
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});
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})
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.catch(function () {})
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.then(function () { busy = false; schedule(); });
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}
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S.on(document, 'visibilitychange', function () {
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if (document.hidden) clearTimeout(timer); else load();
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});
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if (Object.keys(rows).length) schedule();
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}
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});
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// Ports: the note under the mode follows the chosen mode.
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App.register('forwards', {
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mount(root) {
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var notes = {
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http: 'Трафик идёт через порт панели ' + root.dataset.panelPort + ' (long-poll). Порт ' + root.dataset.tunnelPort + ' не требуется.',
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tcp: 'Требуется открытый порт ' + root.dataset.tunnelPort + '/tcp на хосте. Самая низкая задержка.',
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udp: 'Требуется открытый порт ' + root.dataset.tunnelPort + '/udp на хосте.'
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};
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var sel = root.querySelector('#proto'), note = root.querySelector('#note');
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if (!sel || !note) return;
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function upd() { note.textContent = notes[sel.value] || ''; }
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sel.onchange = upd; upd();
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}
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});
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// Status: meters, live speed and the speed test of a machine.
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App.register('status', {
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mount(root, S) {
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// Timers, requests and listeners end with the page.
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var setTimeout = S.timeout, setInterval = S.interval, clearTimeout = S.clear, clearInterval = S.clear, fetch = S.fetch;
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var base = '/api/panel/agents/' + encodeURIComponent(root.dataset.agent);
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var $ = function (id) { return root.querySelector('#' + id); };
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var errBox = $('err');
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function size(n) {
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var u = ['Б', 'КБ', 'МБ', 'ГБ', 'ТБ'], i = 0;
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while (n >= 1024 && i < u.length - 1) { n /= 1024; i++; }
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return n.toFixed(n < 10 && i > 0 ? 1 : 0) + ' ' + u[i];
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}
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function rateParts(bps) {
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var u = ['бит/с', 'Кбит/с', 'Мбит/с', 'Гбит/с'], i = 0;
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while (bps >= 1000 && i < u.length - 1) { bps /= 1000; i++; }
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return [bps.toFixed(bps < 100 && i > 0 ? 1 : 0), u[i]];
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}
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function rate(bps) { return rateParts(bps).join(' '); }
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function meter(name, pct, sub) {
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pct = Math.max(0, Math.min(100, pct));
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$(name + '-val').textContent = Math.round(pct) + '%';
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var bar = $(name + '-bar');
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bar.style.transform = 'scaleX(' + pct / 100 + ')';
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bar.className = pct >= 90 ? 'crit' : pct >= 75 ? 'warn' : '';
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$(name + '-sub').textContent = sub;
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}
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function showErr(msg) {
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errBox.textContent = msg || '';
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errBox.hidden = !msg;
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}
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function cores(n) {
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var d = n % 10, h = n % 100;
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return n + (d === 1 && h !== 11 ? ' ядро' : d >= 2 && d <= 4 && (h < 12 || h > 14) ? ' ядра' : ' ядер');
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}
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// One request at a time, and none while the tab is hidden: the client is
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// sampled only for a page somebody is looking at.
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var timer = null, busy = false;
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function schedule(ms) {
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clearTimeout(timer);
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if (!document.hidden) timer = setTimeout(load, ms);
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}
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function load() {
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if (busy || document.hidden) return;
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busy = true;
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var next = 3000;
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fetch(base + '/stat', {credentials: 'same-origin'})
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.then(function (r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.json(); })
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.then(function (res) {
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if (!res.ok) { showErr(res.error || 'ошибка'); next = 10000; return; }
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showErr('');
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var d = res.data;
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meter('cpu', d.cpu, cores(d.ncpu));
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meter('mem', d.mem_total ? 100 * d.mem_used / d.mem_total : 0,
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'занято ' + size(d.mem_used) + ' из ' + size(d.mem_total) + ' · свободно ' + size(d.mem_total - d.mem_used));
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meter('disk', d.disk_total ? 100 * (d.disk_total - d.disk_free) / d.disk_total : 0,
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'свободно ' + size(d.disk_free) + ' из ' + size(d.disk_total));
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})
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.catch(function (e) { showErr('Нет связи с панелью: ' + e.message); next = 10000; })
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.then(function () { busy = false; schedule(next); });
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}
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S.on(document, 'visibilitychange', function () {
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if (document.hidden) clearTimeout(timer); else load();
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});
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load();
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var btn = $('speed-btn'), note = $('speed-note');
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function json(r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.json(); }
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function post(path) { return fetch(base + path, {method: 'POST', credentials: 'same-origin'}).then(json); }
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// The browser's round trip to the panel: the first request may pay for a
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// new connection, so keep the best.
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function panelPing() {
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var best = Infinity, left = 4;
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function one() {
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var t = performance.now();
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return fetch('/api/panel/ping', {credentials: 'same-origin', cache: 'no-store'})
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.then(function (r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.arrayBuffer(); })
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.then(function () {
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best = Math.min(best, performance.now() - t);
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return --left > 0 ? one() : best;
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});
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}
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return one();
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}
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// Keeps the client's download fed until stopped or the panel says the
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// client has read enough; the pieces grow while they go through quickly.
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function feed(stop) {
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var block = new Uint8Array(65536), n = 4;
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crypto.getRandomValues(block);
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function one() {
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var parts = [], t = performance.now();
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for (var i = 0; i < n; i++) parts.push(block);
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return fetch(base + '/speed/down', {method: 'POST', body: new Blob(parts), credentials: 'same-origin', signal: stop.signal})
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.then(function (r) {
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if (r.status !== 204) return;
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if (performance.now() - t < 500 && n < 256) n *= 2;
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return one();
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});
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}
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one().catch(function () {});
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}
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// Reads what the client sends and times it from the first byte. It stops by
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// itself a little after the client's window, so bytes still queued on a slow
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// link don't hold the result back. st.n is the count so far, for the live
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// reading.
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function drain(st, onFirst) {
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var ac = new AbortController(), last = 0;
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st.stop = function () { ac.abort(); };
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function done() { return st.start && last > st.start ? st.n * 8000 / (last - st.start) : 0; }
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return fetch(base + '/speed/up', {credentials: 'same-origin', cache: 'no-store', signal: ac.signal}).then(function (r) {
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if (!r.ok) throw new Error('HTTP ' + r.status);
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var rd = r.body.getReader();
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function pump() {
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return rd.read().then(function (c) {
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if (c.done) return done();
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last = performance.now();
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if (!st.start) { st.start = last; setTimeout(st.stop, Number(root.dataset.relayUpMs)); onFirst(); }
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else st.n += c.value.length;
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return pump();
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});
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}
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return pump();
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}).catch(function (e) { if (st.start) return done(); throw e; });
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}
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// The test through the browser: the client's download is what this page
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// uploads, and its upload is timed here, where it arrives.
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function relayTest(st) {
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return panelPing().then(function (ping) {
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return post('/speed/relay').then(function (res) {
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if (!res.ok) return res;
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var stop = new AbortController();
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var up = drain(st, function () { stop.abort(); });
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up.catch(function () {});
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feed(stop);
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return post('/speed?relay=1').then(function (res) {
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stop.abort();
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// No upload under way by now: none is coming.
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if (!res.ok || !st.start) { st.stop(); }
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if (!res.ok) return res;
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return up.catch(function () { return 0; }).then(function (bps) {
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res.data.ping_ms += ping;
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if (bps) res.data.up_bps = bps;
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return res;
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});
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}, function (e) { stop.abort(); st.stop(); throw e; });
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});
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});
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}
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// The live reading: the rate over the last second, from the byte counts the
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// panel keeps for the running test - or, for the client's upload in a test
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// through the browser, from what has arrived here.
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var ARC = 251.4, lv = null;
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function liveStart(relay, st) {
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lv = {relay: relay, st: st, phase: '', pts: [], hist: [], busy: false};
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$('live').hidden = false;
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liveShow('ping', 0);
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lv.timer = setInterval(liveTick, 200);
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}
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function liveStop() {
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if (!lv) return;
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clearInterval(lv.timer);
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lv = null;
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$('live').hidden = true;
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}
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function liveTick() {
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var cur = lv;
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if (cur.relay && cur.st.start) { livePoint(cur, 'up', cur.st.n, performance.now()); return; }
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if (cur.busy) return;
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cur.busy = true;
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fetch(base + '/speed/progress', {credentials: 'same-origin', cache: 'no-store'})
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.then(json)
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.then(function (d) {
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if (cur !== lv || !d.phase || (cur.relay && cur.st.start)) return;
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livePoint(cur, d.phase, d.phase === 'up' ? d.up : d.down, d.ms);
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})
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.catch(function () {})
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.then(function () { cur.busy = false; });
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}
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function livePoint(cur, phase, bytes, ms) {
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if (phase !== cur.phase) { cur.phase = phase; cur.pts = []; cur.hist = []; }
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if (phase === 'ping') { liveShow(phase, 0); return; }
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var pts = cur.pts;
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pts.push([ms, bytes]);
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while (pts.length > 2 && ms - pts[0][0] > 1000) pts.shift();
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if (pts.length < 2 || ms <= pts[0][0]) return;
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var bps = (bytes - pts[0][1]) * 8000 / (ms - pts[0][0]);
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cur.hist.push(bps);
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liveShow(phase, bps, cur);
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}
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function liveShow(phase, bps, cur) {
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var relay = lv && lv.relay, p = rateParts(bps);
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$('live').className = 'live' + (phase === 'up' ? ' up' : '');
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$('lv-ico').textContent = phase === 'up' ? '↑' : phase === 'down' ? '↓' : '';
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$('lv-phase').textContent = phase === 'ping' ? 'Задержка…'
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: phase === 'up' ? (relay ? 'клиент → браузер' : 'клиент → хост')
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: (relay ? 'браузер → клиент' : 'хост → клиент');
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$('lv-num').textContent = phase === 'ping' ? '…' : p[0];
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$('lv-unit').textContent = phase === 'ping' ? '' : p[1];
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// A log scale up to 1 Гбит/с, so a slow link moves the needle too.
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var f = Math.min(1, Math.log(1 + bps / 1e6) / Math.log(1001));
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$('lv-arc').style.strokeDashoffset = ARC * (1 - f);
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var h = cur ? cur.hist : [], max = 1.25 * Math.max.apply(null, h.concat(1)), line = '';
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for (var i = 0; i < h.length; i++) {
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line += (h.length > 1 ? 100 * i / (h.length - 1) : 0).toFixed(1) + ',' + (98 - 94 * h[i] / max).toFixed(1) + ' ';
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}
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$('lv-line').setAttribute('points', line);
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$('lv-area').setAttribute('points', h.length > 1 ? '0,100 ' + line + '100,100' : '');
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}
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btn.onclick = function () {
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var relay = $('speed-relay').checked, st = {n: 0, start: 0, stop: function () {}};
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btn.disabled = true;
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note.textContent = 'Идёт замер…';
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$('speed').hidden = true;
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liveStart(relay, st);
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(relay ? relayTest(st) : post('/speed'))
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.then(function (res) {
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if (!res.ok) { note.textContent = res.error || 'ошибка'; return; }
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var d = res.data;
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$('sp-ping').textContent = d.ping_ms ? d.ping_ms.toFixed(d.ping_ms < 10 ? 1 : 0) + ' мс' : '-';
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$('sp-down').textContent = rate(d.down_bps);
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$('sp-up').textContent = d.up_bps ? rate(d.up_bps) : '-';
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$('sp-down-lbl').textContent = relay ? 'браузер → клиент' : 'хост → клиент';
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$('sp-up-lbl').textContent = relay ? 'клиент → браузер' : 'клиент → хост';
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$('speed').hidden = false;
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note.textContent = d.partial ? 'Замер остановлен по времени - показано то, что успело набраться' : '';
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})
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.catch(function (e) { note.textContent = 'Не удалось: ' + e.message; })
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.then(function () { liveStop(); btn.disabled = false; });
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};
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}
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});
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})();
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Block a user