multicoin-address-validator-ts/lib/tron_validator.js

Multicoin address validator for Bitcoin and other Altcoins. TS version

"use strict";
var cryptoUtils = require('./crypto/utils');
function decodeBase58Address(base58Sting) {
    if (typeof (base58Sting) !== 'string') {
        return false;
    }
    if (base58Sting.length <= 4) {
        return false;
    }
    try {
        var address = cryptoUtils.base58(base58Sting);
    }
    catch (e) {
        return false;
    }
    /*if (base58Sting.length <= 4) {
        return false;
    }*/
    var len = address.length;
    var offset = len - 4;
    var checkSum = address.slice(offset);
    address = address.slice(0, offset);
    var hash0 = cryptoUtils.sha256(cryptoUtils.byteArray2hexStr(address));
    var hash1 = cryptoUtils.hexStr2byteArray(cryptoUtils.sha256(hash0));
    var checkSum1 = hash1.slice(0, 4);
    if (checkSum[0] === checkSum1[0] && checkSum[1] === checkSum1[1] && checkSum[2]
        === checkSum1[2] && checkSum[3] === checkSum1[3]) {
        return address;
    }
    return false;
}
function getEnv(currency, networkType) {
    var evn = networkType || 'prod';
    if (evn !== 'prod' && evn !== 'testnet')
        evn = 'prod';
    return currency.addressTypes[evn][0];
}
module.exports = {
    /**
     * tron address validation
     */
    isValidAddress: function (mainAddress, currency, opts) {
        var networkType = opts ? opts.networkType : '';
        var address = decodeBase58Address(mainAddress);
        if (!address) {
            return false;
        }
        if (address.length !== 21) {
            return false;
        }
        return getEnv(currency, networkType) === address[0];
    }
};