275 lines
10 KiB
HTML
275 lines
10 KiB
HTML
<!doctype html>
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<html lang="ru">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Терминал · {{.Agent.Name}} - LPRA</title>
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<link rel="stylesheet" href="/static/app.css">
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<link rel="stylesheet" href="/static/xterm.css">
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<style>
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#status.st-ok { color:#37c871; }
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#status.st-err { color:#ff5c5c; }
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/* Touch screens: the page is as tall as what the on-screen keyboard leaves,
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with a row of extra keys at the bottom, the way Termux does it. */
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.keys { display:none; }
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body.touch { position:fixed; left:0; right:0; top:0; height:100%; display:flex; flex-direction:column; overflow:hidden; }
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body.touch .wrap { flex:1; min-height:0; display:flex; width:100%; margin:0; padding:6px; }
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body.touch #terminal { flex:1; min-width:0; height:auto; }
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body.touch .keys {
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display:grid; grid-template-columns:repeat(7, 1fr); gap:4px; flex:none;
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padding:4px 4px calc(4px + env(safe-area-inset-bottom)); background:var(--panel); border-top:1px solid var(--border);
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}
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.keys button {
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height:38px; padding:0; border:1px solid var(--border); border-radius:6px;
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background:#0c0f13; color:var(--text); font:500 13px ui-monospace, SFMono-Regular, Menlo, monospace;
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touch-action:manipulation; user-select:none; -webkit-user-select:none; -webkit-tap-highlight-color:transparent;
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}
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.keys button:active { background:var(--border); }
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.keys button.on { background:var(--accent); border-color:var(--accent); color:#fff; }
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.keys button.lock { background:var(--accent); border-color:#fff; color:#fff; }
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</style>
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</head>
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<body>
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<header class="topbar">
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<div class="brand">LPRA · Терминал - {{.Agent.Name}} <span class="muted">({{.Agent.TerminalUser}}@{{.Agent.Hostname}})</span></div>
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<nav>
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<a href="/">← Машины</a>
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<a href="/agents/{{.Agent.ID}}/files">Файлы</a>
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<a href="/agents/{{.Agent.ID}}/forwards">Порты</a>
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<a href="/agents/{{.Agent.ID}}/status">Статус</a>
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<a href="/agents/{{.Agent.ID}}/edit">Изменить</a>
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<span id="status" class="muted" style="margin-left:28px">подключение…</span>
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</nav>
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</header>
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<div class="wrap" style="max-width:none">
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<div id="terminal"></div>
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</div>
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<div class="keys" id="keys">
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<button type="button" data-k="esc">ESC</button>
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<button type="button" data-k="/">/</button>
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<button type="button" data-k="-">-</button>
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<button type="button" data-k="home">HOME</button>
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<button type="button" data-k="up">↑</button>
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<button type="button" data-k="end">END</button>
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<button type="button" data-k="pgup">PGUP</button>
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<button type="button" data-k="tab">TAB</button>
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<button type="button" data-k="ctrl" data-mod="ctrl">CTRL</button>
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<button type="button" data-k="alt" data-mod="alt">ALT</button>
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<button type="button" data-k="left">←</button>
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<button type="button" data-k="down">↓</button>
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<button type="button" data-k="right">→</button>
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<button type="button" data-k="pgdn">PGDN</button>
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</div>
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<script src="/static/xterm.js"></script>
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<script src="/static/addon-fit.js"></script>
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<script>
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(function () {
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const agentID = {{.Agent.ID}};
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const statusEl = document.getElementById('status');
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const touch = window.matchMedia('(pointer: coarse)').matches;
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if (touch) document.body.classList.add('touch');
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function setStatus(t, cls) { statusEl.textContent = t; statusEl.className = cls || ''; }
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const term = new Terminal({
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cursorBlink: true,
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fontSize: touch ? 13 : 14,
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fontFamily: 'ui-monospace, SFMono-Regular, Menlo, monospace',
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theme: { background: '#0c0f13' }
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});
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const fit = new FitAddon.FitAddon();
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term.loadAddon(fit);
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term.open(document.getElementById('terminal'));
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fit.fit();
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function bytesToB64(bytes) {
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let bin = '';
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for (let i = 0; i < bytes.length; i++) bin += String.fromCharCode(bytes[i]);
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return btoa(bin);
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}
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function b64ToBytes(b64) {
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const bin = atob(b64);
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const u = new Uint8Array(bin.length);
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for (let i = 0; i < bin.length; i++) u[i] = bin.charCodeAt(i);
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return u;
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}
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const base = '/api/panel/term/';
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let sid = null;
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let closed = false;
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let connected = false;
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function post(path, body) {
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return fetch(path, {
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method: 'POST',
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headers: body ? { 'Content-Type': 'application/json' } : {},
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body: body ? JSON.stringify(body) : undefined,
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keepalive: true
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});
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}
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async function open() {
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try {
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const r = await post(base + encodeURIComponent(agentID) + '/open');
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if (!r.ok) {
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const body = await r.text().catch(() => '');
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setStatus('ошибка открытия (' + r.status + ')', 'st-err');
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term.write('\r\n\x1b[31m[не удалось открыть сессию: HTTP ' + r.status + ']\x1b[0m\r\n');
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if (body) term.write(body.slice(0, 300).replace(/\n/g, '\r\n') + '\r\n');
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if (r.status === 404) term.write('\x1b[33mМашина не найдена на сервере - возможно, устаревший бинарник сервера без маршрута /open.\x1b[0m\r\n');
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return;
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}
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const j = await r.json();
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sid = j.session_id;
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setStatus('ожидание агента…');
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sendResize();
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pollLoop();
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} catch (e) {
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setStatus('ошибка сети', 'st-err');
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term.write('\r\n\x1b[31m[ошибка сети: ' + (e && e.message ? e.message : e) + ']\x1b[0m\r\n');
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}
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}
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async function pollLoop() {
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while (!closed && sid) {
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let r;
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try {
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r = await fetch(base + sid + '/out', { cache: 'no-store' });
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} catch (e) {
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// transient network hiccup; brief pause then retry
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await new Promise(res => setTimeout(res, 1000));
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continue;
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}
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if (!r.ok) { finish('[соединение закрыто]'); return; }
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const j = await r.json();
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if (j.closed) { finish('[сессия завершена]'); return; }
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if (j.frames) {
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for (const f of j.frames) {
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if (f.exit) { finish('[сессия завершена]'); return; }
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if (f.data) {
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if (!connected) { connected = true; setStatus('подключено', 'st-ok'); }
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term.write(b64ToBytes(f.data));
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}
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}
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}
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}
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}
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function finish(msg) {
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if (closed) return;
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closed = true;
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setStatus('соединение закрыто', 'muted');
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term.write('\r\n\x1b[33m' + msg + '\x1b[0m\r\n');
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}
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function send(data) {
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if (closed || !sid) return;
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const bytes = new TextEncoder().encode(data);
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post(base + sid + '/in', { t: 'i', d: bytesToB64(bytes) });
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}
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// What the keyboard types gets the CTRL / ALT of the extra keys, if armed.
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term.onData(function (data) { send(withMods(data)); });
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// --- Extra keys (touch screens) ---
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// CTRL and ALT: a tap arms the key for the next key press, a long press
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// keeps it on until tapped again.
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const mods = { ctrl: 0, alt: 0 }; // 0 off, 1 next key, 2 locked
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const modBtn = {};
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document.querySelectorAll('#keys [data-mod]').forEach(function (b) { modBtn[b.dataset.mod] = b; });
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function showMods() {
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for (const m in mods) {
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modBtn[m].classList.toggle('on', mods[m] === 1);
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modBtn[m].classList.toggle('lock', mods[m] === 2);
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}
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}
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function useMods() {
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const used = { ctrl: !!mods.ctrl, alt: !!mods.alt };
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for (const m in mods) if (mods[m] === 1) mods[m] = 0;
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showMods();
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return used;
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}
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function ctrlChar(c) {
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if (c === ' ' || c === '@') return '\x00';
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if (c === '?') return '\x7f';
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const code = c.toUpperCase().charCodeAt(0);
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return code >= 64 && code <= 95 ? String.fromCharCode(code & 31) : c;
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}
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function withMods(data) {
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if (!mods.ctrl && !mods.alt) return data;
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const m = useMods();
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if (m.ctrl && data.length === 1) data = ctrlChar(data);
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return m.alt ? '\x1b' + data : data;
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}
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// xterm's modifier parameter: 1 + shift(1) + alt(2) + ctrl(4).
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const CSI = { up: 'A', down: 'B', right: 'C', left: 'D', home: 'H', end: 'F' };
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const TILDE = { pgup: 5, pgdn: 6 };
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function keySeq(k) {
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const m = useMods(), p = 1 + (m.alt ? 2 : 0) + (m.ctrl ? 4 : 0);
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if (CSI[k]) {
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if (p > 1) return '\x1b[1;' + p + CSI[k];
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return (term.modes.applicationCursorKeysMode ? '\x1bO' : '\x1b[') + CSI[k];
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}
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if (TILDE[k]) return '\x1b[' + TILDE[k] + (p > 1 ? ';' + p : '') + '~';
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let s = k === 'esc' ? '\x1b' : k === 'tab' ? '\t' : k;
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if (m.ctrl && s.length === 1) s = ctrlChar(s);
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return m.alt ? '\x1b' + s : s;
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}
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let press = null;
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document.querySelectorAll('#keys button').forEach(function (b) {
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// Keep the focus (and the on-screen keyboard) on the terminal.
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b.addEventListener('pointerdown', function (e) {
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e.preventDefault();
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const mod = b.dataset.mod;
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if (mod) press = { mod: mod, timer: setTimeout(function () { mods[mod] = 2; press = null; showMods(); }, 450) };
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});
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b.addEventListener('pointerup', function (e) {
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e.preventDefault();
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const mod = b.dataset.mod;
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if (mod) {
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if (press && press.mod === mod) {
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clearTimeout(press.timer);
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press = null;
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mods[mod] = mods[mod] ? 0 : 1;
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showMods();
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}
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return;
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}
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send(keySeq(b.dataset.k));
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});
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b.addEventListener('pointercancel', function () { if (press) { clearTimeout(press.timer); press = null; } });
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b.addEventListener('contextmenu', function (e) { e.preventDefault(); });
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});
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function sendResize() {
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if (closed || !sid) return;
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post(base + sid + '/in', { t: 'r', cols: term.cols, rows: term.rows });
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}
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function refit() {
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if (touch && window.visualViewport) {
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// Follow the visible area, so the extra keys sit right above the
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// on-screen keyboard.
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const vv = window.visualViewport;
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document.body.style.top = vv.offsetTop + 'px';
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document.body.style.height = vv.height + 'px';
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}
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fit.fit();
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}
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window.addEventListener('resize', refit);
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if (touch && window.visualViewport) {
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window.visualViewport.addEventListener('resize', refit);
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window.visualViewport.addEventListener('scroll', refit);
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}
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refit();
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term.onResize(sendResize);
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window.addEventListener('pagehide', function () {
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if (sid) navigator.sendBeacon(base + sid + '/close');
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});
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term.focus();
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open();
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})();
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</script>
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</body>
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</html>
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