mirror of
https://github.com/Ylianst/MeshCentral.git
synced 2024-09-11 08:55:32 +03:00
102 lines
4.5 KiB
JavaScript
102 lines
4.5 KiB
JavaScript
/**
|
|
* @description MQTT broker reference implementation based on AEDES
|
|
* @author Joko Banu Sastriawan, Ylian Saint-Hilaire
|
|
* @copyright Intel Corporation 2018-2019
|
|
* @license Apache-2.0
|
|
* @version v0.0.1
|
|
*/
|
|
|
|
module.exports.CreateMQTTBroker = function (parent, db, args) {
|
|
|
|
var obj = {}
|
|
obj.parent = parent;
|
|
obj.db = db;
|
|
obj.args = args;
|
|
obj.aedes = require("aedes")();
|
|
obj.handle = obj.aedes.handle;
|
|
obj.connections = {}; // NodesID --> client array
|
|
|
|
// Connection Authentication
|
|
obj.aedes.authenticate = function (client, username, password, callback) {
|
|
// TODO: add authentication handler
|
|
obj.parent.debug("mqtt", "Authentication with " + username + ":" + password + ":" + client.id + ", " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
|
|
|
|
var usersplit = username.split(':');
|
|
if (usersplit.length != 5) { callback(null, false); return; }
|
|
|
|
// Setup the identifiers
|
|
var xnodeid = usersplit[1];
|
|
var xmeshid = usersplit[2];
|
|
var xdomainid = usersplit[3];
|
|
|
|
// Convert meshid from HEX to Base64 if needed
|
|
if (xmeshid.length == 96) { xmeshid = Buffer.from(xmeshid, 'hex').toString('base64'); }
|
|
if ((xmeshid.length != 64) || (xnodeid.length != 64)) { callback(null, false); return; }
|
|
|
|
client.xdbNodeKey = 'node/' + xdomainid + '/' + xnodeid;
|
|
client.xdbMeshKey = 'mesh/' + xdomainid + '/' + xmeshid;
|
|
|
|
// Check if this node exists in the database
|
|
db.Get(client.xdbNodeKey, function (err, nodes) {
|
|
if ((nodes == null) || (nodes.length != 1)) { callback(null, false); return; } // Node does not exist
|
|
|
|
// If this device now has a different meshid, fix it here.
|
|
client.xdbMeshKey = nodes[0].meshid;
|
|
|
|
if (obj.connections[client.xdbNodeKey] == null) {
|
|
obj.connections[client.xdbNodeKey] = [client];
|
|
parent.SetConnectivityState(client.xdbMeshKey, client.xdbNodeKey, Date.now(), 16, 7); // Indicate this node has a MQTT connection, 7 = Present state
|
|
} else {
|
|
obj.connections[client.xdbNodeKey].push(client);
|
|
}
|
|
|
|
client.conn.parent = client;
|
|
client.conn.on('end', function () {
|
|
// client is "this.parent"
|
|
obj.parent.debug("mqtt", "Connection closed, " + this.parent.conn.xtransport + "://" + cleanRemoteAddr(this.parent.conn.xip));
|
|
|
|
// Remove this client from the connections list
|
|
if ((this.parent.xdbNodeKey != null) && (obj.connections[this.parent.xdbNodeKey] != null)) {
|
|
var clients = obj.connections[this.parent.xdbNodeKey], i = clients.indexOf(client);
|
|
if (i >= 0) {
|
|
if (clients.length == 1) {
|
|
delete obj.connections[this.parent.xdbNodeKey];
|
|
parent.ClearConnectivityState(this.parent.xdbMeshKey, this.parent.xdbNodeKey, 16); // Remove the MQTT connection for this node
|
|
} else { clients.splice(i, 1); }
|
|
}
|
|
}
|
|
|
|
this.parent.close();
|
|
});
|
|
callback(null, true);
|
|
});
|
|
}
|
|
|
|
// Check if a client can publish a packet
|
|
obj.aedes.authorizePublish = function (client, packet, callback) {
|
|
// TODO: add authorized publish control
|
|
obj.parent.debug("mqtt", "AuthorizePublish, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
|
|
callback(null);
|
|
}
|
|
|
|
// Check if a client can publish a packet
|
|
obj.aedes.authorizeSubscribe = function (client, sub, callback) {
|
|
// TODO: add subscription control here
|
|
obj.parent.debug("mqtt", "AuthorizeSubscribe, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
|
|
callback(null, sub);
|
|
}
|
|
|
|
// Check if a client can publish a packet
|
|
obj.aedes.authorizeForward = function (client, packet) {
|
|
// TODO: add forwarding control
|
|
obj.parent.debug("mqtt", "AuthorizeForward, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
|
|
//return packet;
|
|
return packet;
|
|
}
|
|
|
|
// Clean a IPv6 address that encodes a IPv4 address
|
|
function cleanRemoteAddr(addr) { if (typeof addr != 'string') { return null; } if (addr.indexOf('::ffff:') == 0) { return addr.substring(7); } else { return addr; } }
|
|
|
|
return obj;
|
|
}
|