gamemoney-fix/utils.js

GameMoney API wrapper for Node.js

import { URL } from 'node:url';
import crypto from 'node:crypto';
import fs from 'node:fs';
const publicCert = fs
    .readFileSync(new URL('certs/gm.crt', import.meta.url))
    .toString();
export function parametersToString(body) {
    let parametersString = '';
    const keys = Object.keys(body).sort();
    if (Array.isArray(body)) {
        keys.sort((a, b) => Number(a) - Number(b));
    }
    for (const key of keys) {
        let value = body[key];
        if (key === 'signature') {
            continue;
        }
        if (value === null || value === undefined) {
            value = '';
        }
        if (typeof value === 'object' && value !== null) {
            value = parametersToString(value);
        }
        parametersString += `${key}:${value};`;
    }
    return parametersString;
}
export function verifyRsaSignature(body) {
    return crypto
        .createVerify('RSA-SHA256')
        .update(parametersToString(body), 'utf8')
        .verify(publicCert, body.signature, 'base64');
}
export function generateRsaSignature(body, key) {
    return crypto
        .createSign('RSA-SHA256')
        .update(parametersToString(body), 'utf8')
        .sign(key, 'base64');
}
export function generateHmacSignature(body, key) {
    return crypto
        .createHmac('sha256', key)
        .update(parametersToString(body), 'utf8')
        .digest('hex');
}
export function getRandomString(length) {
    return crypto
        .randomBytes(Math.ceil(length / 2))
        .toString('hex')
        .slice(0, length);
}