routeros-api
Version:
Mikrotik Routerboard RouterOS API for NodeJS
110 lines • 7.29 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Transmitter = void 0;
const iconv = require("iconv-lite");
const debug = require("debug");
const info = debug('routeros-api:connector:transmitter:info');
const error = debug('routeros-api:connector:transmitter:error');
/**
* Class responsible for transmitting data over the
* socket to the routerboard
*/
class Transmitter {
/**
* Constructor
*
* @param socket
*/
constructor(socket) {
/**
* Pool of data to be sent after the socket connects
*/
this.pool = [];
this.socket = socket;
}
/**
* Write data over the socket, if it not writable yet,
* save over the pool to be ran after
*
* @param {string} data
*/
write(data) {
const encodedData = this.encodeString(data);
if (!this.socket.writable || this.pool.length > 0) {
info('Socket not writable, saving %o in the pool', data);
this.pool.push(encodedData);
}
else {
info('Writing command %s over the socket', data);
this.socket.write(encodedData);
}
}
/**
* Writes all data stored in the pool
*/
runPool() {
info('Running stacked command pool');
let data;
while (this.pool.length > 0) {
data = this.pool.shift();
this.socket.write(data);
}
}
/**
* Encode the string data that will
* be sent over to the routerboard.
*
* It's encoded in win1252 so any accentuation on foreign languages
* are displayed correctly when opened with winbox.
*
* Credits for George Joseph: https://github.com/gtjoseph
* and for Brandon Myers: https://github.com/Trakkasure
*
* @param {string} str
*/
encodeString(str) {
if (str === null)
return String.fromCharCode(0);
const encoded = iconv.encode(str, 'win1252');
let data;
let len = encoded.length;
let offset = 0;
if (len < 0x80) {
data = Buffer.alloc(len + 1);
data[offset++] = len;
}
else if (len < 0x4000) {
data = Buffer.alloc(len + 2);
len |= 0x8000;
data[offset++] = (len >> 8) & 0xff;
data[offset++] = len & 0xff;
}
else if (len < 0x200000) {
data = Buffer.alloc(len + 3);
len |= 0xc00000;
data[offset++] = (len >> 16) & 0xff;
data[offset++] = (len >> 8) & 0xff;
data[offset++] = len & 0xff;
}
else if (len < 0x10000000) {
data = Buffer.alloc(len + 4);
len |= 0xe0000000;
data[offset++] = (len >> 24) & 0xff;
data[offset++] = (len >> 16) & 0xff;
data[offset++] = (len >> 8) & 0xff;
data[offset++] = len & 0xff;
}
else {
data = Buffer.alloc(len + 5);
data[offset++] = 0xf0;
data[offset++] = (len >> 24) & 0xff;
data[offset++] = (len >> 16) & 0xff;
data[offset++] = (len >> 8) & 0xff;
data[offset++] = len & 0xff;
}
data.fill(encoded, offset);
return data;
}
}
exports.Transmitter = Transmitter;
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