chore: v0.6.0 baseline — 主题美化前存档
已实现：HTTP/TCP/Banner 探测、90 天可用率、表格/卡片视图、 数据源过滤、UptimeRobot 双向兼容、服务端驱动的刷新节奏、 刷新接口滥用防护与信息泄露控制。
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tamakyi
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import net from 'node:net';
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// 协议族识别只用于生成「SSH 响应正常」这类摘要；版本号等细节默认不回显，避免写入公开的 status.json
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const FAMILIES = [
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{ re: /^SSH-\d/i, name: 'SSH' },
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{ re: /^220[\s\S]*ESMTP/i, name: 'SMTP' },
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{ re: /^220[\s\S]*FTP/i, name: 'FTP' },
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{ re: /^\+OK/i, name: 'POP3' },
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{ re: /^\* OK/i, name: 'IMAP' },
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{ re: /^HTTP\/\d/i, name: 'HTTP' },
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{ re: /^220\b/i, name: 'SMTP/TCP' },
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];
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/**
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* 被动 banner 探测：连接后仅读取服务端主动发送的标识串（RFC 4253 的 SSH banner 即此类），
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* 不做认证、不发送任何数据、不执行任何命令——因此不会触发目标侧的登录失败计数或封禁。
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* 需要客户端先发字节的协议（Redis/MySQL）不适用，属于路线图内容。
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*/
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export function probeBanner(monitor) {
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const started = Date.now();
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const timeoutMs = (monitor.timeout ?? 10) * 1000;
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const maxBytes = Math.max(32, Number(monitor.maxBannerBytes) || 512);
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return new Promise((resolve) => {
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const socket = net.createConnection({ host: monitor.host, port: monitor.port });
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let raw = '';
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let settled = false;
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const done = (status, detail) => {
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if (settled) return;
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settled = true;
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socket.destroy();
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resolve({ status, latency: Date.now() - started, code: null, detail });
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};
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const evaluate = () => {
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const line = (raw.split(/\r?\n/)[0] ?? '').trim();
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const family = FAMILIES.find((f) => f.re.test(line))?.name ?? null;
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if (monitor.expectBanner) {
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let ok = false;
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try {
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ok = new RegExp(monitor.expectBanner, monitor.bannerFlags || 'i').test(line);
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} catch {
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return done('down', 'banner 规则无法编译（expectBanner 不是合法正则）');
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}
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// 不匹配时只报告策略结果，不回显实际收到的标识串
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if (!ok) return done('down', '标识串与期望规则不符');
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}
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const label = family ? `${family} 响应正常` : '收到服务标识串';
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return done('up', monitor.revealBanner ? `${label}：${line.slice(0, 80)}` : label);
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};
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socket.setTimeout(timeoutMs, () => done('down', '等待标识串超时'));
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socket.once('error', (err) =>
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done('down', err.code === 'ECONNREFUSED' ? '连接被拒绝（端口关闭）' : (err.code || err.message))
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);
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// 对端发完就断开（无换行结尾）也算有效响应
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socket.once('end', () => (raw ? evaluate() : done('down', '连接被对端关闭且未发送标识串')));
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// 只在收到换行或达到字节上限时判定，避免把分包到达的标识串截断
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socket.on('data', (chunk) => {
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raw += chunk.toString('latin1');
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if (/[\r\n]/.test(raw) || raw.length >= maxBytes) evaluate();
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});
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});
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}
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const USER_AGENT = 'shiroko-monitor/0.2 (lightweight uptime panel)';
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export async function probeHttp(monitor) {
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const started = Date.now();
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const timeoutMs = (monitor.timeout ?? 10) * 1000;
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try {
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// redirect: manual —— 保留 3xx 原始状态码交给 expectStatus 判定，避免跟随重定向掩盖异常
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const res = await fetch(monitor.url, {
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method: monitor.method || 'GET',
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redirect: 'manual',
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signal: AbortSignal.timeout(timeoutMs),
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headers: { 'user-agent': USER_AGENT, accept: '*/*' },
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});
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const latency = Date.now() - started;
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const expect = monitor.expectStatus ?? [200];
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const ok = expect.includes(res.status);
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return {
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status: ok ? 'up' : 'down',
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latency,
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code: res.status,
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detail: ok ? `HTTP ${res.status}` : `HTTP ${res.status}（期望 ${expect.join('/')}）`,
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};
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} catch (err) {
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const latency = Date.now() - started;
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let detail;
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if (err.name === 'TimeoutError') detail = `请求超时（>${timeoutMs / 1000}s）`;
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else if (err.cause?.code) detail = err.cause.code;
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else detail = err.message;
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return { status: 'down', latency, code: 0, detail };
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}
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}
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import net from 'node:net';
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export function probeTcp(monitor) {
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const started = Date.now();
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const timeoutMs = (monitor.timeout ?? 10) * 1000;
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return new Promise((resolve) => {
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const socket = net.createConnection({ host: monitor.host, port: monitor.port });
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const finish = (status, detail) => {
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socket.destroy();
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resolve({ status, latency: Date.now() - started, code: null, detail });
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};
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socket.setTimeout(timeoutMs, () => finish('down', 'TCP 连接超时'));
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socket.once('error', (err) =>
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finish('down', err.code === 'ECONNREFUSED' ? '连接被拒绝（端口关闭）' : (err.code || err.message))
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);
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socket.once('connect', () => finish('up', '端口可连接'));
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});
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}
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/**
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* UptimeRobot 只读数据源（API v2）
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*
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* 作用：把 UptimeRobot 已有的监控结果接入本面板，作为「异地探测视角」与自建探针并列展示。
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* 只读：仅调用 getMonitors，不做任何写操作（暂停/编辑/删除），因此用 ur* 开头的只读 Key 即可。
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*
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* 术语对齐（UptimeRobot v2）：
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* monitor.type 1=HTTP(s) 2=Keyword 3=Ping 4=Port
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* monitor.status 0=暂停 1=未检测 2=正常 8/9=异常
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* logs[].type 1=故障 2=恢复 98=开始监控 99=暂停
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* logs[].reason { code: "403", detail: "Forbidden" }
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* custom_uptime_ratio / custom_down_durations 按请求顺序以 '-' 分隔
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*/
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const API_URL = 'https://api.uptimerobot.com/v2/getMonitors';
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const HISTORY_LIMIT = 48;
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const TYPE_LABEL = { 1: 'HTTP', 2: 'KEYWORD', 3: 'PING', 4: 'PORT' };
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// 暂停/未检测都归入 pending：否则会被误报成「离线」
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const STATUS_MAP = { 0: 'pending', 1: 'pending', 2: 'up', 8: 'down', 9: 'down' };
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function splitNums(value) {
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return String(value ?? '')
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.split('-')
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.map((v) => Number(v))
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.filter((v) => Number.isFinite(v));
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}
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function ratiosToObject(value, ratios) {
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const nums = splitNums(value);
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const out = {};
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ratios.forEach((r, i) => {
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if (Number.isFinite(nums[i])) out[r] = nums[i];
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});
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return out;
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}
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function targetOf(m) {
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if (m.type === 4 && m.port) return `${m.url ? `${m.url}:` : ''}${m.port}`;
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return m.url || '';
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}
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function latestDownReason(logs) {
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const down = (logs ?? []).find((l) => l.type === 1);
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const reason = down?.reason;
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if (!reason) return null;
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const code = String(reason.code ?? '').trim();
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const detail = String(reason.detail ?? '').trim();
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return { code: code || null, text: [code, detail].filter(Boolean).join(' ') || null };
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}
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/**
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* 纯函数：把 UptimeRobot 的 getMonitors 响应映射成本探针的内部结构（可离线单测）
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* @param {object} payload getMonitors 原始响应
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* @param {{group?: string, ratios?: number[], now?: number}} [options]
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*/
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export function mapUptimeRobotMonitors(payload, options = {}) {
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const group = options.group || 'UptimeRobot';
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const ratios = options.ratios ?? [1, 7, 30, 90];
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const now = options.now ?? Date.now();
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const monitors = [];
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for (const m of payload?.monitors ?? []) {
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const status = STATUS_MAP[m.status] ?? 'pending';
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const samples = Array.isArray(m.response_times) ? m.response_times : [];
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const logs = Array.isArray(m.logs) ? m.logs : [];
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// UR 侧的真实检测时刻：正常取最新响应样本，故障取最近一次故障日志
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const lastCheckSec = status === 'down' ? logs.find((l) => l.type === 1)?.datetime : samples[0]?.datetime;
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const lastCheckIso = new Date((Number(lastCheckSec) || Math.floor(now / 1000)) * 1000).toISOString();
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const history = samples
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.slice(0, HISTORY_LIMIT)
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.map((s) => ({ t: new Date(s.datetime * 1000).toISOString(), ok: Number(s.value) > 0, ms: Math.max(0, Number(s.value) || 0) }))
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.reverse();
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if (status === 'down') history.push({ t: lastCheckIso, ok: false, ms: 0 });
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const last = samples[0]?.value;
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const avg = m.average_response_time;
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const latency = Number.isFinite(Number(last)) && Number(last) > 0
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? Math.round(Number(last))
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: Number.isFinite(Number(avg)) ? Math.round(Number(avg)) : null;
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const reason = latestDownReason(logs);
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let detail;
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if (status === 'up') detail = 'UptimeRobot：运行正常';
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else if (status === 'down') detail = `UptimeRobot：${reason?.text ?? '连接失败'}`;
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else detail = m.status === 0 ? 'UptimeRobot：监控已暂停' : 'UptimeRobot：尚未检测';
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monitors.push({
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id: `ur-${m.id}`,
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name: m.friendly_name || `UptimeRobot #${m.id}`,
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group,
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type: 'ur',
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url: targetOf(m),
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// 与 UR 侧一致：编号、协议、检测间隔
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source: 'uptimerobot',
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sourceId: m.id,
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sourceType: m.type,
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sourceLabel: TYPE_LABEL[m.type] ?? `TYPE${m.type}`,
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interval: Number(m.interval) || 300,
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status,
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latency,
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// UR 不直接给「当前 HTTP 状态码」，故障时取最近一次故障日志里的 code
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code: status === 'down' && reason?.code ? Number(reason.code) || null : null,
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detail,
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lastCheckIso,
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history,
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uptimeRatios: ratiosToObject(m.custom_uptime_ratio, ratios),
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downSeconds: ratiosToObject(m.custom_down_durations, ratios),
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createDatetime: Number(m.create_datetime) || null,
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});
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}
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return monitors;
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}
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export async function fetchUptimeRobotMonitors({ apiKey, timeoutMs = 15000, ratios = [1, 7, 30, 90] }) {
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if (!apiKey) throw new Error('缺少 UptimeRobot API Key');
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const body = new URLSearchParams({
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api_key: apiKey,
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format: 'json',
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response_times: '1',
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response_times_average: '30',
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custom_uptime_ratios: ratios.join('-'),
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logs: '1',
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log_types: '1-2',
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// 注意：custom_down_durations 不能作为请求参数传入（v2 会返回 invalid_parameter），
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// 但响应中默认会带该字段，故 downSeconds 仍可解析
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});
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const res = await fetch(API_URL, {
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method: 'POST',
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headers: { 'content-type': 'application/x-www-form-urlencoded', accept: 'application/json' },
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body,
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signal: AbortSignal.timeout(timeoutMs),
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});
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if (!res.ok) throw new Error(`UptimeRobot HTTP ${res.status}`);
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const payload = await res.json();
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if (payload.stat !== 'ok') throw new Error(`UptimeRobot 返回错误：${payload.error?.message || payload.error?.type || 'unknown'}`);
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return mapUptimeRobotMonitors(payload, { ratios });
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}
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