105 lines
4.6 KiB
JavaScript
105 lines
4.6 KiB
JavaScript
"use strict";
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/* ================= Star Raid 服务端入口 =================
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零依赖：node:http + node:sqlite。静态资源白名单 + /api 路由 + 安全头 */
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const http = require("node:http");
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const fs = require("node:fs");
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const path = require("node:path");
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const db = require("./db");
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const auth = require("./auth");
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const { ROUTES } = require("./api");
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const { readJson, parseCookies, clientIp } = require("./util");
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const PORT = Number(process.env.PORT || 8643);
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const HOST = process.env.HOST || "0.0.0.0";
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const SECURE = process.env.COOKIE_SECURE === "1"; // HTTPS 反代部署时置 1
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const ROOT = path.join(__dirname, ".."); // star-raid/
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/* 静态资源白名单：只允许入口页与 css/js（server/、data/、demo/ 一律不放行） */
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const STATIC_PREFIXES = ["/css/", "/js/"];
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const MIME = { ".html": "text/html; charset=utf-8", ".css": "text/css; charset=utf-8", ".js": "application/javascript; charset=utf-8", ".json": "application/json; charset=utf-8", ".png": "image/png", ".jpg": "image/jpeg", ".svg": "image/svg+xml", ".ico": "image/x-icon" };
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function secHeaders(res) {
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res.setHeader("X-Content-Type-Options", "nosniff");
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res.setHeader("X-Frame-Options", "DENY");
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res.setHeader("Referrer-Policy", "no-referrer");
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res.setHeader("Content-Security-Policy",
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"default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src https://fonts.gstatic.com; img-src 'self' data:; connect-src 'self'; base-uri 'none'; frame-ancestors 'none'");
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}
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function sendJson(res, status, obj, setCookie) {
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const body = JSON.stringify(obj);
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res.writeHead(status, {
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"Content-Type": "application/json; charset=utf-8",
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"Cache-Control": "no-store",
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...(setCookie ? { "Set-Cookie": setCookie } : {}),
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});
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res.end(body);
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}
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/* 请求上下文：统一成功/失败出口 */
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function makeCtx(req, res) {
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return {
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ip: clientIp(req),
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secure: SECURE,
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token: parseCookies(req)[auth.COOKIE_NAME],
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user: null,
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setCookie: null,
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ok(data) { sendJson(res, 200, data, this.setCookie); return true; },
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fail(status, error) { sendJson(res, status, { error }, this.setCookie); return false; },
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};
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}
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async function handleApi(req, res, pathname, query) {
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const ctx = makeCtx(req, res);
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const route = ROUTES[req.method + " " + pathname];
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if (!route) return ctx.fail(404, "not found");
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/* 有 session 就识别身份；route.auth 才强制要求登录 */
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if (ctx.token) ctx.user = auth.getSessionUser(db, ctx.token);
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if (route.auth && !ctx.user) return ctx.fail(401, "未登录或会话已过期");
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try {
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let body = null;
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/* logout 等无 body 的 POST 不强制 JSON；有 body 的必须 application/json */
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if (req.method === "POST" && Number(req.headers["content-length"] || 0) > 0) body = await readJson(req);
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return route.fn(req, res, ctx, body, query);
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} catch (e) {
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const status = e && e.status && Number.isInteger(e.status) ? e.status : 500;
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if (status === 500) console.error("[api]", pathname, e);
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return ctx.fail(status, status === 500 ? "服务器开小差了" : e.message);
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}
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}
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function handleStatic(req, res, pathname) {
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if (req.method !== "GET" && req.method !== "HEAD") { res.writeHead(405); return res.end(); }
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let p = pathname;
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if (p === "/") p = "/index.html";
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const allowed = p === "/index.html" || STATIC_PREFIXES.some((pre) => p.startsWith(pre));
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if (!allowed || p.includes("..")) { res.writeHead(404); return res.end("not found"); }
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const full = path.normalize(path.join(ROOT, p));
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if (!full.startsWith(ROOT + path.sep)) { res.writeHead(404); return res.end("not found"); }
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const ext = path.extname(full).toLowerCase();
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const mime = MIME[ext];
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if (!mime) { res.writeHead(404); return res.end("not found"); }
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fs.readFile(full, (err, data) => {
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if (err) { res.writeHead(404); return res.end("not found"); }
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res.writeHead(200, { "Content-Type": mime, "Cache-Control": "no-cache" });
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if (req.method === "HEAD") return res.end();
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res.end(data);
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});
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}
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const server = http.createServer((req, res) => {
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secHeaders(res);
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let url;
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try { url = new URL(req.url, "http://x"); } catch (e) { res.writeHead(400); return res.end(); }
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const pathname = url.pathname;
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if (pathname.startsWith("/api/")) {
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if (pathname === "/api/health" && req.method === "GET") return sendJson(res, 200, { ok: true, t: Date.now() });
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handleApi(req, res, pathname, url.searchParams);
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} else {
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handleStatic(req, res, pathname);
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}
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});
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server.listen(PORT, HOST, () => {
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console.log(`[star-raid] server listening on http://${HOST}:${PORT} (secure-cookie=${SECURE})`);
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});
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