48 lines
1.7 KiB
JavaScript
48 lines
1.7 KiB
JavaScript
import { createServer } from "node:http";
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import { readFile, stat } from "node:fs/promises";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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const root = path.resolve(
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path.dirname(fileURLToPath(import.meta.url)),
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"..",
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"dist",
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),
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prefix = "/deep/nested/diagram/",
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types = new Map([
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[".css", "text/css"],
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[".html", "text/html"],
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[".js", "text/javascript"],
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[".json", "application/json"],
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[".webmanifest", "application/manifest+json"],
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[".svg", "image/svg+xml"],
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[".md", "text/markdown"],
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[".txt", "text/plain"],
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]),
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headers = {
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"Content-Security-Policy":
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"default-src 'self';base-uri 'self';object-src 'none';script-src 'self';style-src 'self' 'unsafe-inline';img-src 'self' data: blob:;connect-src 'self';worker-src 'self' blob:;manifest-src 'self'",
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"Permissions-Policy": "camera=(),microphone=(),geolocation=()",
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"Referrer-Policy": "no-referrer",
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"X-Content-Type-Options": "nosniff",
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};
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createServer(async (q, s) => {
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try {
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const u = new URL(q.url ?? "/", "http://x"),
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d = decodeURIComponent(u.pathname),
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r = d.startsWith(prefix) ? d.slice(prefix.length) : d.replace(/^\/+/, ""),
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n = path.posix.normalize(r || "index.html");
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if (n.startsWith("../") || path.isAbsolute(n))
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return void s.writeHead(400).end();
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let f = path.join(root, n);
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if ((await stat(f).catch(() => null))?.isDirectory())
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f = path.join(f, "index.html");
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s.writeHead(200, {
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"Content-Type": types.get(path.extname(f)) ?? "application/octet-stream",
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...headers,
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});
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s.end(await readFile(f));
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} catch {
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s.writeHead(404).end();
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}
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}).listen(4222, "127.0.0.1", () => console.log("ready"));
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