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'use strict';
// @ts-check
// ==================================================================================
// dockerSockets.js
// ----------------------------------------------------------------------------------
// Description: System Information - library
// for Node.js
// Copyright: (c) 2014 - 2025
// Author: Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License: MIT
// ==================================================================================
// 13. DockerSockets
// ----------------------------------------------------------------------------------
const net = require('net');
const isWin = require('os').type() === 'Windows_NT';
const socketPath = isWin ? '//./pipe/docker_engine' : '/var/run/docker.sock';
class DockerSocket {
getInfo(callback) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/info HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
}
listImages(all, callback) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/images/json' + (all ? '?all=1' : '') + ' HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
}
inspectImage(id, callback) {
id = id || '';
if (id) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/images/' + id + '/json?stream=0 HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
} else {
callback({});
}
}
listContainers(all, callback) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/containers/json' + (all ? '?all=1' : '') + ' HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
}
getStats(id, callback) {
id = id || '';
if (id) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/containers/' + id + '/stats?stream=0 HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
} else {
callback({});
}
}
getInspect(id, callback) {
id = id || '';
if (id) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/containers/' + id + '/json?stream=0 HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
} else {
callback({});
}
}
getProcesses(id, callback) {
id = id || '';
if (id) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/containers/' + id + '/top?ps_args=-opid,ppid,pgid,vsz,time,etime,nice,ruser,user,rgroup,group,stat,rss,args HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
} else {
callback({});
}
}
listVolumes(callback) {
try {
let socket = net.createConnection({ path: socketPath });
let alldata = '';
let data;
socket.on('connect', () => {
socket.write('GET http:/volumes HTTP/1.0\r\n\r\n');
});
socket.on('data', data => {
alldata = alldata + data.toString();
});
socket.on('error', () => {
socket = false;
callback({});
});
socket.on('end', () => {
let startbody = alldata.indexOf('\r\n\r\n');
alldata = alldata.substring(startbody + 4);
socket = false;
try {
data = JSON.parse(alldata);
callback(data);
} catch (err) {
callback({});
}
});
} catch (err) {
callback({});
}
}
}
module.exports = DockerSocket;