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/**
* @project iii-client
* @author Valentin Popov <info@valentineus.link>
* @license See LICENSE.md file included in this distribution.
*/
var http = require('http');
exports.connect = connect;
/**
* Connects to the server and returns the connection data.
* @param {String} uuid - The bot UUID.
* @param {requestCallback} callback - The callback that handles the response.
*/
function connect(uuid, callback) {
uuid = uuid || '';
if (!isVerification(uuid)) {
throw new Error('The UUID is not a valid value!');
}
const query = {
port: 80,
hostname: 'iii.ru',
path: '/api/2.0/json/Chat.init/' + uuid + '/',
method: 'GET',
};
const request = http.request(query, function(response) {
var json = '';
response.on('data', (raw) => json = decryptJSON(raw));
response.on('end', () => callback(json.result));
});
request.on('error', (error) => Error(error.message));
request.end();
}
exports.send = send;
/**
* Send a message to the server and return a response.
* @param {Object} raw - The data to send.
* @param {String} raw.cuid - Session identifier.
* @param {String} raw.text - Message text.
* @param {requestCallback} callback - The callback that handles the response.
*/
function send(raw, callback) {
raw = raw || {};
const query = {
port: 80,
hostname: 'iii.ru',
path: '/api/2.0/json/Chat.request',
method: 'POST',
};
const data = createPackage(raw);
const request = http.request(query, function(response) {
var json = '';
response.on('data', (raw) => json = decryptJSON(raw));
response.on('end', () => callback(json.result));
});
request.on('error', (error) => Error(error));
request.write(data);
request.end();
}
exports.encrypt = encrypt;
/**
* Encrypts the incoming data.
* @param {String} raw - Decrypted data.
* @returns {String} - Encrypted string.
*/
function encrypt(raw) {
raw = raw || '';
var base64 = Buffer.from(raw).toString('base64');
var string = Buffer.from(base64);
return mergerString(string).toString('base64');
}
exports.decrypt = decrypt;
/**
* Decrypts the incoming data.
* @param {String} raw - Encrypted data.
* @returns {String} - Decrypted string.
*/
function decrypt(raw) {
raw = raw || '';
var string = Buffer.from(raw, 'base64');
var decrypted = mergerString(string).toString();
return Buffer.from(decrypted, 'base64');
}
exports.decryptJSON = decryptJSON;
/**
* Decrypts an encrypted JSON object.
* @param {String} raw - Encrypted data.
* @returns {Object} - Decrypted JSON.
*/
function decryptJSON(raw) {
raw = raw || '';
var string = raw.toString('ascii');
var data = decrypt(string);
return JSON.parse(data);
}
exports.mergerString = mergerString;
/**
* Merge and convert a string.
* @param {String} raw - The string to convert.
* @returns {String} - The converted string.
*/
function mergerString(data) {
data = data || '';
const salt = Buffer.from('some very-very long string without any non-latin characters due to different string representations inside of variable programming languages');
for (var i = 0; i < data.length; i++) {
data[i] = data[i] ^ salt[i % salt.length];
}
return data;
}
exports.createPackage = createPackage;
/**
* Creates an encrypted package to send.
* @param {Object} raw - The data to send.
* @param {String} raw.cuid - Session identifier.
* @param {String} raw.text - Message text.
* @returns {String} - Encrypted string.
*/
function createPackage(raw) {
raw = raw || {};
if (!raw.text) {
throw new Error('There is no data to send!');
}
if (!isVerification(raw.cuid)) {
throw new Error('Parameter \'CUID\' is not a valid UUID value!');
}
var data = [];
data.push(raw.cuid);
data.push(raw.text.toString());
var json = JSON.stringify(data);
return encrypt(json);
}
exports.isVerification = isVerification;
/**
* Validation UUID format string.
* @param {String} data - The string to check.
* @returns {Boolean}
*/
function isVerification(data) {
data = data || '';
const regexp = new RegExp('^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$', 'i');
return regexp.test(data);
}
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