@nodesecure/js-x-ray/dist/probes/isSyncIO.js

JavaScript AST XRay analysis

// Import Third-party Dependencies
import { getCallExpressionIdentifier } from "@nodesecure/estree-ast-utils";
import { generateWarning } from "../warnings.js";
// CONSTANTS
const kTracedNodeCoreModules = ["fs", "crypto", "child_process", "zlib"];
const kSyncIOIdentifierOrMemberExps = [
    "crypto.pbkdf2Sync",
    "crypto.scryptSync",
    "crypto.generateKeyPairSync",
    "fs.readFileSync",
    "fs.writeFileSync",
    "fs.appendFileSync",
    "fs.readSync",
    "fs.writeSync",
    "fs.readdirSync",
    "fs.statSync",
    "fs.mkdirSync",
    "fs.renameSync",
    "fs.unlinkSync",
    "fs.symlinkSync",
    "fs.openSync",
    "fs.fstatSync",
    "fs.linkSync",
    "fs.realpathSync",
    "child_process.execSync",
    "child_process.spawnSync",
    "child_process.execFileSync",
    "zlib.deflateSync",
    "zlib.inflateSync",
    "zlib.gzipSync",
    "zlib.gunzipSync",
    "zlib.brotliCompressSync",
    "zlib.brotliDecompressSync"
];
function validateNode(node, ctx) {
    const { tracer } = ctx.sourceFile;
    const id = getCallExpressionIdentifier(node, {
        externalIdentifierLookup: (name) => tracer.literalIdentifiers.get(name) ?? null
    });
    if (id === null ||
        !kTracedNodeCoreModules.some((moduleName) => tracer.importedModules.has(moduleName))) {
        return [false];
    }
    const data = tracer.getDataFromIdentifier(id);
    return [
        data !== null &&
            data.identifierOrMemberExpr.endsWith("Sync")
    ];
}
function initialize(ctx) {
    kSyncIOIdentifierOrMemberExps.forEach((identifierOrMemberExp) => {
        const moduleName = identifierOrMemberExp.split(".")[0];
        ctx.sourceFile.tracer.trace(identifierOrMemberExp, {
            followConsecutiveAssignment: true,
            moduleName
        });
    });
}
function main(node, ctx) {
    const warning = generateWarning("synchronous-io", {
        value: node.callee.name,
        location: node.loc
    });
    ctx.sourceFile.warnings.push(warning);
}
export default {
    name: "isSyncIO",
    validateNode,
    main,
    initialize,
    breakOnMatch: false
};
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