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