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fix: harden sandbox writes and centralize atomic file writes

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This commit is contained in:
Peter Steinberger
2026-03-02 16:44:46 +00:00
parent 14e4575af5
commit 18f8393b6c
12 changed files with 203 additions and 139 deletions
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10
src/node-host/config.ts
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@@ -2,6 +2,7 @@ import crypto from "node:crypto";
import fs from "node:fs/promises";
import path from "node:path";
import { resolveStateDir } from "../config/paths.js";
import { writeJsonAtomic } from "../infra/json-files.js";
export type NodeHostGatewayConfig = {
host?: string;
@@ -54,14 +55,7 @@ export async function loadNodeHostConfig(): Promise<NodeHostConfig | null> {
export async function saveNodeHostConfig(config: NodeHostConfig): Promise<void> {
const filePath = resolveNodeHostConfigPath();
await fs.mkdir(path.dirname(filePath), { recursive: true });
const payload = JSON.stringify(config, null, 2);
await fs.writeFile(filePath, `${payload}\n`, { mode: 0o600 });
try {
await fs.chmod(filePath, 0o600);
} catch {
// best-effort on platforms without chmod
}
await writeJsonAtomic(filePath, config, { mode: 0o600 });
}
export async function ensureNodeHostConfig(): Promise<NodeHostConfig> {