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chore: add CSP header; route unwatch-file through path-guard #3

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Merged
ivandobskygithub merged 1 commit into from
May 6, 2026
Merged

chore: add CSP header; route unwatch-file through path-guard #3

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32 changes: 29 additions & 3 deletions main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -451,11 +451,12 @@ ipcMain.handle('watch-file', (_event, filePath) => {
});

ipcMain.handle('unwatch-file', (_event, filePath) => {
const resolved = path.resolve(filePath);
const watcher = fileWatchers.get(resolved);
const check = assertPathAllowed(filePath, 'read');
if (!check.ok) return { ok: false, error: check.error };
const watcher = fileWatchers.get(check.resolved);
if (watcher) {
watcher.close();
fileWatchers.delete(resolved);
fileWatchers.delete(check.resolved);
}
return { ok: true };
});
Expand Down Expand Up @@ -1417,6 +1418,31 @@ ipcMain.handle('updater-install', () => {});

// --- App lifecycle ---
app.whenReady().then(() => {
// Content-Security-Policy: lock the renderer to same-origin script/style
// execution. xterm/codemirror are bundled locally; markdown is rendered
// through DOMPurify before reaching the DOM, so 'unsafe-inline' is not
// required for scripts. Inline styles are still allowed (xterm injects
// colour styles at runtime via setAttribute('style', …)).
const { session } = require('electron');
session.defaultSession.webRequest.onHeadersReceived((details, callback) => {
callback({
responseHeaders: {
...details.responseHeaders,
'Content-Security-Policy': [
"default-src 'self'; " +
"script-src 'self'; " +
"style-src 'self' 'unsafe-inline'; " +
"img-src 'self' data: blob:; " +
"font-src 'self' data:; " +
"connect-src 'self'; " +
"object-src 'none'; " +
"base-uri 'self'; " +
"frame-ancestors 'none'"
],
},
});
});

// Seed path-guard allowed roots from every known Claude projects folder
// so the file panel can read project files immediately at startup.
try {
Expand Down