Files
AgentHub/server/lib/same-origin.js
T
nntrivi2001 85187dfc78 feat(config): create a new project's memory file from Settings
The Memory tab could only show this machine's user memory and the
dashboard's own project file. Setting up a project you had not run
through the dashboard meant opening a terminal — `PUT /file`'s
"project" scope always resolves against the server's cwd, on purpose.

Add one narrow route per tool that writes into the directory you name:
CLAUDE.md for Claude Code, AGENTS.md for Codex, both through the same
`project-memory.js`. Being the only write path that honours a
caller-supplied directory, it pays for that:

  - the directory must be absolute and already exist — nothing is
    created for you;
  - the filename comes from the route, never from the body;
  - an existing file, symlink included, is a 409 — this can only
    create, never overwrite;
  - it sits behind the loopback-Origin guard /api/run uses, so a page
    in the user's browser cannot plant agent instructions in a project
    directory. That guard moves to lib/same-origin.js to be shared.

The modal takes the dashboard's known project dirs as suggestions on a
free-text input rather than a closed list: a project it has never seen
is exactly the case this exists for.

Mutation-checked: dropping the origin guard, and swapping lstat for
stat, each fail a test.
2026-09-09 01:45:00 +07:00

51 lines
1.6 KiB
JavaScript

/**
* @file same-origin.js
* @description Loopback-Origin guard for the routes that act on the machine
* rather than on the dashboard's own database — spawning a process, or
* writing a file into a directory the request names.
*
* The dashboard binds to localhost, so any page in the user's browser can
* reach it. Without this, a malicious site could POST to it and, say, drop a
* CLAUDE.md full of instructions into a project the user later opens.
*
* Browser requests carry `Origin`; it must be a loopback host. Requests with
* no `Origin` (curl, the CLI) pass — they are not the drive-by case. `Referer`
* is the fallback for older browsers.
*
* Extracted from routes/run.js so the config routes enforce the identical
* rule instead of a second, drifting copy.
*
* @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
*/
const ALLOWED_ORIGIN_HOSTS = new Set(["localhost", "127.0.0.1", "::1", "0.0.0.0"]);
function isLoopback(raw) {
try {
return ALLOWED_ORIGIN_HOSTS.has(new URL(raw).hostname);
} catch {
return false;
}
}
function sameOriginGuard(req, res, next) {
const origin = req.headers.origin;
if (origin) {
if (!isLoopback(origin)) {
return res.status(403).json({
error: { code: "EBADORIGIN", message: "cross-origin requests are not allowed" },
});
}
return next();
}
const referer = req.headers.referer;
if (referer && !isLoopback(referer)) {
return res.status(403).json({
error: { code: "EBADORIGIN", message: "cross-origin requests are not allowed" },
});
}
return next();
}
module.exports = { sameOriginGuard, ALLOWED_ORIGIN_HOSTS };