82 lines
2.3 KiB
JavaScript
82 lines
2.3 KiB
JavaScript
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/*jshint esversion: 6 */
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const path = require('path');
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const db = require(path.resolve(__dirname, '../_helpers/db.js'));
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const Camera = db.Camera;
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const net = require('net');
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module.exports = {
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sendCmd: _sendCmd
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};
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async function _sendCmd(id, cmd) {
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const camera = await Camera.findById(id);
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const buffer = Buffer.from(cmd, 'hex');
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return new Promise((resolve, reject) => {
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const socket = new net.Socket({allowHalfOpen: true});
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const conn = net.createConnection(Number(camera.port), camera.ip);
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conn.setNoDelay();
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conn.setEncoding('hex');
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conn.on('connect', () => {
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conn.write(buffer);
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});
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conn.on('error', (error) => {
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reject(error);
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});
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conn.on('data', (buf) => {
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if (conn.bytesRead >= 3) {
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conn.end();
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decode(buf.toString('hex'))
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.then((res) => {
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resolve(res);
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})
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.catch(err => {
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reject(err);
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});
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} else {
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reject("Unusual Camera Response: " + buf.toString('hex') + " connection bytes Read: " + conn.bytesRead);
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}
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});
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});
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}
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async function decode(hexStr) {
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let decoded = '';
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switch (hexStr) {
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case "9041ff":
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case "9042ff":
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decoded = "Command Accepted";
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break;
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case "9051ff":
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case "9041ff9051ff":
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decoded = "Socket1 Cmd Done";
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break;
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case "9052ff":
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case "9042ff9052ff":
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decoded = "Socket2 Cmd Done";
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break;
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case "906002ff":
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throw "Command Syntax Error";
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case "906003ff":
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throw "Command Buffer Full";
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case "906104ff":
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throw "Socket1 Cmd Cancelled";
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case "906204ff":
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throw "Socket2 Cmd Cancelled";
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case "906105ff":
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case "906205ff":
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throw "No Socket";
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case "906141ff":
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throw "Socket1 Cmd Not Executable";
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case "906241ff":
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throw "Socket2 Cmd Not Executable";
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default:
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throw "Unusual Camera Response: " + hexStr;
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}
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return decoded;
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}
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