Files
gmgn-skills/src/config.ts
T
David LauandClaude Opus 4.8 fdc7a3fb16 fix(security): defend against prompt injection via token metadata
Address HackenProof report GMGNWM-143, where attacker-controlled token metadata
could hijack an AI agent driving gmgn-cli into executing an unauthorized trade.
Move guardrails from overridable SKILL.md text into code.

- Add src/sanitize.ts: neutralize prompt-injection framing and hidden/control
  characters in API output (via printResult) and validate create-token metadata
- Add src/confirm.ts: code-enforced human confirmation for financial writes
  (swap, multi-swap, order strategy create, cooking create) — reads a typed
  "yes" from /dev/tty; automation requires GMGN_ALLOW_AUTOMATED_TRADES=1 + --yes
- Harden config.ts: tighten ~/.config/gmgn/.env to 0600 and warn if world-readable
- Update SKILL.md files, Readme.md and Readme.zh.md to document the gate,
  the --yes flag, and untrusted-metadata handling

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-20 19:24:50 +08:00

76 lines
2.5 KiB
TypeScript

import { config as loadDotenv } from "dotenv";
import { chmodSync, existsSync, statSync } from "fs";
import { homedir } from "os";
import { join } from "path";
const GLOBAL_ENV_PATH = join(homedir(), ".config", "gmgn", ".env");
// The credential file holds a plaintext private key and API key. Before loading
// it, make sure it is not readable by other users on the machine. If the file is
// group/other-accessible we tighten it to 0600 and warn — this reduces the blast
// radius of the plaintext-credential storage called out in the security review.
function enforceCredentialFilePermissions(path: string): void {
if (process.platform === "win32" || !existsSync(path)) return;
try {
const mode = statSync(path).mode & 0o777;
if (mode & 0o077) {
chmodSync(path, 0o600);
console.error(
`[gmgn-cli] Warning: ${path} was accessible to other users (mode ${mode.toString(8)}). ` +
`Permissions tightened to 600. Your GMGN private key is stored here in plaintext — ` +
`keep this file private and consider a dedicated trading wallet with limited funds.`
);
}
} catch {
// Non-fatal: if we cannot stat/chmod, fall through to normal loading.
}
}
enforceCredentialFilePermissions(GLOBAL_ENV_PATH);
// Load global config first (~/.config/gmgn/.env, takes precedence), then project .env (supplements only)
loadDotenv({ path: GLOBAL_ENV_PATH, override: true });
loadDotenv();
export interface Config {
apiKey: string;
privateKeyPem?: string;
host: string;
}
let _config: Config | null = null;
const PRIVATE_KEY_REQUIRED_MSG =
"GMGN_PRIVATE_KEY is required for critical-auth commands (swap, order, and follow-wallet commands)";
export function getConfig(requirePrivateKey = false): Config {
if (_config) {
if (requirePrivateKey && !_config.privateKeyPem) {
die(PRIVATE_KEY_REQUIRED_MSG);
}
return _config;
}
const apiKey = process.env.GMGN_API_KEY;
if (!apiKey) {
die("GMGN_API_KEY is required. Set it in your .env file or environment.");
}
let privateKeyPem: string | undefined;
const privateKey = process.env.GMGN_PRIVATE_KEY;
if (privateKey) {
// Support escaped newlines (e.g. from single-line .env values)
privateKeyPem = privateKey.replace(/\\n/g, "\n");
} else if (requirePrivateKey) {
die(PRIVATE_KEY_REQUIRED_MSG);
}
const host = "https://openapi.gmgn.ai";
_config = { apiKey: apiKey!, privateKeyPem, host };
return _config;
}
function die(msg: string): never {
console.error(`[gmgn-cli] Error: ${msg}`);
process.exit(1);
}