electron-root-ssl-pinning/lib/parsePemFile.js

Pinning root CA certificates into your Electron app

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const fs_1 = __importDefault(require("fs"));
const n_readlines_1 = __importDefault(require("n-readlines"));
function parsePemFile(pathname) {
    checkFileExistence(pathname);
    const rootCertificatesList = [];
    const lineReader = new n_readlines_1.default(pathname);
    let iteration;
    do {
        iteration = findAndReadCertificate(lineReader);
        if (typeof iteration.result === "string") {
            rootCertificatesList.push(iteration.result);
        }
    } while (iteration.isEnd === false);
    if (rootCertificatesList.length === 0) {
        throw new Error(`File ${pathname} does not contain any certificates`);
    }
    return rootCertificatesList;
}
exports.parsePemFile = parsePemFile;
function checkFileExistence(pathname) {
    const error = new Error(`File '${pathname}' does not exist. Please check correct pathname to your root CA '*.pem' file.`);
    if (!pathname) {
        throw error;
    }
    const result = fs_1.default.existsSync(pathname);
    if (result === false) {
        throw error;
    }
}
exports.checkFileExistence = checkFileExistence;
function findAndReadCertificate(lineReader) {
    let currentLine;
    let currentString;
    let certificate = "";
    do {
        currentLine = lineReader.next();
        if (currentLine === false) {
            return { result: undefined, isEnd: true };
        }
        currentString = currentLine.toString("ascii");
    } while (!currentString.startsWith("-----BEGIN CERTIFICATE-----"));
    updateCertificateString();
    do {
        currentLine = lineReader.next();
        if (currentLine === false) {
            return { result: undefined, isEnd: true };
        }
        currentString = currentLine.toString("ascii");
        updateCertificateString();
    } while (!currentString.startsWith("-----END CERTIFICATE-----"));
    return {
        result: certificate.trim(),
        isEnd: false,
    };
    function updateCertificateString() {
        certificate += currentString.trim() + "\n";
    }
}
exports.findAndReadCertificate = findAndReadCertificate;