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Source is provided under the CH-J Proprietary Software License 1.14. Its availability does not change the license terms or grant additional rights.

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1"use strict";

2const { spawn } = require("node:child_process");

3function biometricError(code, message = code) { return Object.assign(new Error(message), { code }); }

4class NativeRunner {

  constructor({ executable, args = [], timeoutMs = 65000, spawnImpl = spawn } = {}) { Object.assign(this, { executable, args, timeoutMs, spawnImpl }); }

6 run(request, { signal } = {}) {

7 if (signal?.aborted) return Promise.reject(biometricError("BIOMETRIC_CANCELLED"));

8 return new Promise((resolve, reject) => {

9 let child, output = Buffer.alloc(0), settled = false, timer;

10 const finish = (error, result) => {

11 if (settled) { if (result?.key) result.key = null; return; }

12 settled = true; clearTimeout(timer); signal?.removeEventListener("abort", abort);

13 output.fill(0); output = Buffer.alloc(0);

14 if (error) { try { child?.kill(); } catch {} reject(error); } else resolve(result);

15 };

16 const abort = () => finish(biometricError("BIOMETRIC_CANCELLED"));

      try { child = this.spawnImpl(this.executable, this.args, { shell: false, windowsHide: true, stdio: ["pipe", "pipe", "pipe"] }); }

18 catch { finish(biometricError("BIOMETRIC_UNAVAILABLE")); return; }

19 signal?.addEventListener("abort", abort, { once: true });

      timer = setTimeout(() => finish(biometricError("BIOMETRIC_TIMEOUT")), request.op === "status" ? Math.min(8000, this.timeoutMs) : this.timeoutMs);

21 child.on("error", () => finish(biometricError("BIOMETRIC_UNAVAILABLE")));

22 child.stdin.on("error", () => finish(biometricError("BIOMETRIC_UNAVAILABLE")));

23 // Never forward helper stderr, stdin or raw responses to logs or the renderer.

24 child.stderr.on("data", () => {});

25 child.stdout.on("data", chunk => {

26 if (settled) return;

27 if (output.length + chunk.length > 16384) { finish(biometricError("BIOMETRIC_FAILED")); return; }

28 const previous = output; output = Buffer.concat([output, chunk]); previous.fill(0);

29 });

30 child.once("close", code => {

31 if (settled) return;

32 try {

33 const value = JSON.parse(output.toString("utf8"));

          if (code !== 0 || value.ok !== true) throw biometricError(/^BIOMETRIC_[A-Z_]+$/.test(value.code) ? value.code : "BIOMETRIC_FAILED");

35 finish(null, value);

36 } catch (error) { finish(error.code?.startsWith("BIOMETRIC_") ? error : biometricError("BIOMETRIC_FAILED")); }

37 });

38 const input = Buffer.from(JSON.stringify(request) + "\n");

39 child.stdin.end(input, () => input.fill(0));

40 });

41 }

42}

43module.exports = { NativeRunner, biometricError };

SHA-256: 9be476532a518be0a6b27290ecf0a15ead61e35b3ffa4040731fd168f2ca325d

Archive SHA-256: 5ac91caf4fa32a6fdb114f2430deed486fbe7489d5eea343d1f034169fafb5e0