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7aa9bbd3be
The cost-bearing endpoints (/api/realtime/token, /api/openai/hud-summary, /api/google/nearby-places) and the voice debug log refuse cross-site browser requests: a foreign or opaque Origin, a Sec-Fetch-Site other than same-origin/none, or proxy forwarding headers. Loopback tools without an Origin and the LAN opt-in keep working. The dev and preview servers send one shared Content-Security-Policy, and embed-mode framing rewrites only the frame-ancestors directive of it. Salvaged from #242 onto current main. Co-authored-by: Sameh Khamis <[email protected]> Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
44 lines
1.9 KiB
JavaScript
44 lines
1.9 KiB
JavaScript
import { admitSameSiteRequest } from '../../../src/localRequestGate.mjs';
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/**
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* Cross-site request gate for cost-bearing and log endpoints. Feeds the
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* request to the pure, unit-tested `admitSameSiteRequest` and answers 403
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* itself when the request is refused. Returns true when it has already
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* responded (the caller returns); false when the handler should continue.
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* Refuses cross-site browser requests (foreign or opaque Origin, a
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* Sec-Fetch-Site other than same-origin/none, or reverse-proxy headers) while
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* keeping loopback non-browser tools and the HOST=0.0.0.0 LAN opt-in working.
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* @param {import('node:http').IncomingMessage} req
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* @param {import('node:http').ServerResponse} res
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* @returns {boolean} True when a 403 was sent.
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*/
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export function admitSameSite(req, res) {
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const verdict = admitSameSiteRequest({
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hostHeader: req.headers?.host,
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protocol: req.socket?.encrypted ? 'https:' : 'http:',
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origin: req.headers?.origin,
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secFetchSite: req.headers?.['sec-fetch-site'],
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proxyHeaders: req.headers || {},
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});
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if (verdict.ok) return false;
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res.statusCode = verdict.status;
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res.setHeader('Content-Type', 'application/json');
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res.setHeader('Cache-Control', 'no-store');
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res.end(JSON.stringify({ error: verdict.error }));
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return true;
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}
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/**
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* Wrap a middleware handler so cross-site requests are refused with 403
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* before the handler runs. Loopback tools and same-origin browser requests
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* pass straight through.
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* @param {(req: import('node:http').IncomingMessage, res: import('node:http').ServerResponse, next?: Function) => unknown} handler
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* @returns {(req: import('node:http').IncomingMessage, res: import('node:http').ServerResponse, next?: Function) => unknown}
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*/
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export function sameSiteGated(handler) {
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return (req, res, next) => {
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if (admitSameSite(req, res)) return undefined;
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return handler(req, res, next);
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};
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}
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