worm-sign
Version:
A prescient scanner to detect and banish Shai Hulud malware from your dependencies.
133 lines (132 loc) • 5.17 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
// @ts-expect-error: No types available for @yarnpkg/lockfile
const lockfile = __importStar(require("@yarnpkg/lockfile"));
function detectFromPackageManagerField(fieldValue) {
if (!fieldValue)
return false;
return fieldValue.startsWith('yarn');
}
function parseYarnLock(content) {
const packages = new Map();
const integrity = new Map();
let parsed;
try {
const result = lockfile.parse(content);
if (result.type === 'success' || result.type === 'merge') {
parsed = result.object;
}
else {
parsed = result.object;
}
}
catch (e) {
const msg = e instanceof Error ? e.message : String(e);
throw new Error(`Yarn lockfile parse error: ${msg}`);
}
if (!parsed) {
return { packages, integrity };
}
for (const [key, info] of Object.entries(parsed)) {
const lastAt = key.lastIndexOf('@');
if (lastAt === -1)
continue;
const name = key.slice(0, lastAt);
const version = info.version;
if (name && version) {
const descriptors = key.split(',').map((k) => k.trim());
for (const descriptor of descriptors) {
const lastAtDesc = descriptor.lastIndexOf('@');
if (lastAtDesc !== -1) {
const pkgName = descriptor.slice(0, lastAtDesc);
const set = packages.get(pkgName) ?? new Set();
set.add(version);
packages.set(pkgName, set);
if (info.integrity || info.resolved) {
// Yarn 1 often puts hash in 'resolved' if 'integrity' is missing, or 'integrity' itself.
// We prioritize integrity, then try to extract hash from resolved url if possible (e.g. #sha1-...)
let hash = info.integrity;
if (!hash && info.resolved && info.resolved.includes('#')) {
hash = info.resolved.split('#')[1];
}
if (hash) {
const pkgIntegrity = integrity.get(pkgName) ?? new Map();
pkgIntegrity.set(version, hash);
integrity.set(pkgName, pkgIntegrity);
}
}
}
}
}
}
return { packages, integrity };
}
function loadLockPackages(lockPath) {
const warnings = [];
let packages = new Map();
if (!fs.existsSync(lockPath)) {
warnings.push(`Lockfile not found at ${lockPath}`);
return { packages, warnings, success: false };
}
try {
const content = fs.readFileSync(lockPath, 'utf8');
const result = parseYarnLock(content);
packages = result.packages;
if (packages.size === 0) {
warnings.push(`No packages parsed from ${path.basename(lockPath)}; check format.`);
}
return { packages, packageIntegrity: result.integrity, warnings, success: true };
}
catch (err) {
const msg = err instanceof Error ? err.message : String(err);
warnings.push(`Unable to read ${path.basename(lockPath)}: ${msg}`);
return { packages, warnings, success: false };
}
}
const yarnHandler = {
id: 'yarn',
label: 'Yarn',
lockFiles: ['yarn.lock'],
detectFromPackageManagerField,
findLockFile: (repoRoot) => {
const candidate = path.join(repoRoot, 'yarn.lock');
return fs.existsSync(candidate) ? candidate : null;
},
loadLockPackages,
};
exports.default = yarnHandler;