solutaut/src/base58_validator.js

Multicoin address validator for Bitcoin and other Altcoins.

const base58 = require('./crypto/base58');

// simple base58 validator.  Just checks if it can be decoded.
module.exports = {
    isValidAddress: function (address, currency, opts = {}) {
        try {
            if (!address || address.length == 0) {
                return false;
            }

            if (currency.minLength && (address.length < currency.minLength)) {
                return false;
            }

            if (currency.maxLength && (address.length > currency.maxLength)) {
                return false;
            }
            try {
                const decoded = base58.decode(address);
                if (!decoded || !decoded.length) {
                    return false;
                }
            } catch (e) {
                // if decoding fails, assume invalid address
                return false;
            }
            return true;
        } catch (e) {
            return false;
        }
    }
};