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index.js
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"use strict";
var serialport = require('serialport'),
fs = require('fs'),
EventEmitter = require('events').EventEmitter,
Commands = require('./commands'),
Class = require('./class'),
forge = require('node-forge'),
convertHex = require("convert-hex"),
bigInt = require("big-integer"),
crypto = require("crypto")
var SSPInstance = Class.extend({
options: {},
port: null,
commands: null,
keys: {
generatorKey: null,
modulusKey: null,
hostRandom: null,
hostIntKey: null,
slaveIntKey: null,
fixedKey: Buffer.from('0123456701234567', "hex"),
variableKey: null,
key: null,
negotiateKeys: false,
set_generator: false,
set_modulus: false,
request_key_exchange: false,
finishEncryption: false
},
initialize: function (opts) {
var self = this;
var options = this.options = {
device: opts.device || null,
baudrate: opts.baudrate || 9600,
databits: opts.databits || 8,
stopbits: opts.stopbits || 2,
parity: opts.parity && ['even', 'mark', 'odd', 'space'].indexOf(opts.parity.toString().toLowerCase()) > -1 ? opts.parity : 'none',
currencies: opts.currencies || [1, 0, 1],
type: opts.type || "nv10usb",
sspID: opts.sspID || 0,
seqence: opts.sequence || 0x80
};
if (fs.readdirSync(__dirname + '/commands').map(function (item) {
return item.replace(/\..+$/, '');
}).indexOf(options.type) === -1) {
throw new Error("Unknown device type '" + options.type + "'");
}
},
initiateKeys: function () {
var commands = this.commands, self = this;
var getRandomInt = function (min, max) {
return Math.floor(Math.random() * (max - min)) + min;
}
var keyPair = forge.pki.rsa.generateKeyPair(64);
self.keys.generatorKey = keyPair.privateKey.p;
self.keys.modulusKey = keyPair.privateKey.q;
self.keys.hostRandom = getRandomInt(1, 5);
self.keys.hostIntKey = self.keys.generatorKey ^ self.keys.hostRandom % self.keys.modulusKey
self.keys.negotiateKeys = true
},
parse: function (a, count) {
for (var i = a.length; i < count; i++) {
a.push(0)
}
return a;
},
sendGenerator: function () {
var commands = this.commands, self = this;
setTimeout(function () {
var generatorArray = commands.parseHexString(self.keys.generatorKey.toString(16), 8)
self.keys.set_generator = true;
commands.set_generator.apply(this, generatorArray)
}, 200)
},
sendModulus: function () {
var commands = this.commands, self = this;
setTimeout(function () {
var modulusArray = commands.parseHexString(self.keys.modulusKey.toString(16), 8)
self.keys.set_modulus = true;
commands.set_modulus.apply(this, modulusArray)
}, 200)
},
sendRequestKeyExchange: function () {
var commands = this.commands, self = this;
setTimeout(function () {
var hostIntArray = commands.parseHexString(self.keys.hostIntKey.toString(16), 8)
self.keys.request_key_exchange = true;
commands.request_key_exchange.apply(this, hostIntArray)
}, 200)
},
createHostEncryptionKeys: function (data) {
var commands = this.commands, self = this;
if (self.keys.key == null) {
data.shift()
var hexString = convertHex.bytesToHex(data.reverse());
var slaveIntKey = bigInt(hexString, 16);
var slaveIntKeyString = ""
if (!slaveIntKey.isSmall) {
var values = slaveIntKey.value.reverse();
for (var i = 0; i < values.length; i++) {
slaveIntKeyString += "" + values[i]
}
} else {
slaveIntKeyString = slaveIntKey.value
}
self.keys.slaveIntKey = slaveIntKeyString
self.keys.key = self.keys.slaveIntKey ^ self.keys.hostRandom % self.keys.modulusKey
self.keys.variableKey = self.keys.key
self.keys.finishEncryption = true
commands.setKeys(self.keys)
self.emit("ready");
}
},
enable: function (cb) {
var commands = this.commands, self = this;
var wait = function () {
self.pollID = setTimeout(function () {
commands.exec("poll", wait);
}, 4000);
}
commands.exec("enable", function () {
cb && cb();
wait();
});
},
disable: function (cb) {
var self = this;
self.pollID && clearTimeout(self.pollID);
this.commands.exec("disable", function () {
cb && cb();
});
},
reset: function (cb) {
var self = this;
self.pollID && clearTimeout(self.pollID);
this.commands.exec("reset", function () {
self.port.close();
cb && cb();
});
},
init: function (enableOnInit, cb) {
var port;
var commands;
var options = this.options;
var self = this;
if ("function" === typeof enableOnInit) {
cb = enableOnInit;
enableOnInit = false;
}
cb = cb || function () {
};
if (this.port && this.port.isOpen()) {
this.port.close(function () {
initializeDevice();
});
} else if (!options.device) {
serialport.list(function (err, ports) {
if (err || ports.length === 0) {
cb(err || new Error("No devices found"));
} else {
for (var i in ports) {
if (ports[i].vendorId === '0x191c' || (ports[i].pnpId && ports[i].pnpId.indexOf('Innovative_Technology') > -1)) {
options.device = ports[i].comName;
//TODO: device autodetection
}
}
if (!options.device) {
cb(new Error("Device not found, try define manually"));
} else {
initializeDevice();
}
}
});
} else {
initializeDevice();
}
function initializeDevice() {
port = new serialport.SerialPort(options.device, {
baudrate: options.baudrate,
databits: options.databits,
stopbits: options.stopbits,
parity: options.parity,
parser: serialport.parsers.raw
}, false);
self.port = port;
commands = self.commands = new Commands(port, options.type, options.sspID, options.sequence);
port.on('close', function () {
self.emit('close');
console.log('close:');
});
port.on('error', function (err) {
self.emit('error', err);
console.log('error:', err);
});
port.on('readable', function () {
console.log('Data:', port.read());
});
port.open(function (err) {
function parseBuffer(buffer) {
var data, buf, error, crc;
if (buffer[0] === 0x7F) {
buf = buffer.toJSON();
if (buf.data) {
buf = buf.data;
}
data = buf.slice(3, 3 + buffer[2]);
crc = self.commands.CRC16(buf.slice(1, buf[2] + 3));
if (buf[buf.length - 2] !== crc[0] && buf[buf.length - 1] !== crc[1]) {
console.log('Wrong CRC from validator')
self.emit('error', new Error('Wrong CRC from validator'), buffer, crc);
return;
}
error = new Error("New error");
error.code = data[0];
switch (data[0]) {
case 0xF2:
error.message = "Command not known";
break;
case 0xF3:
error.message = "Wrong no parameters";
break;
case 0xF4:
error.message = "Parameter out of range";
break;
case 0xF5:
error.message = "Command cannot be processed";
break;
case 0xF6:
error.message = "Software error";
break;
case 0xF8:
error.message = "Fail";
break;
case 0xFA:
error.message = "Key not set";
break;
case 0xF0:
break;
default:
error.message = "Unknown error";
}
if (error.code == 0xFA) {
// self.keys.finishEncryption = false
// self.sendRequestKeyExchange()
}
if (error.code !== 0xF0) {
self.emit("error", error, buffer);
} else if (self.keys.negotiateKeys) {
if (!self.keys.set_generator) {
// console.log("data ", data)
self.sendGenerator()
} else if (!self.keys.set_modulus) {
// console.log("data ", data)
self.sendModulus()
} else if (!self.keys.request_key_exchange) {
// console.log("data ", data)
self.sendRequestKeyExchange()
} else if (!self.keys.finishEncryption && data.length == 9) {
// console.log("data ", data)
self.createHostEncryptionKeys(data)
}
} else if (data.length > 1) {
var event;
switch (data[1]) {
case 0xF1: //all
event = ["slave_reset"];
break;
case 0xEF: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["read_note", data[2]];
break;
case 0xEE: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["credit_note", data[2]];
break;
case 0xED: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["note_rejecting"];
break;
case 0xEC: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
//recieve reject code
self.commands.exec("last_reject_code");
break;
case 0xCC: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["note_stacking"];
break;
case 0xEB: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["note_stacked"];
break;
case 0xEA: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["safe_note_jam"];
break;
case 0xE9: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["unsafe_note_jam"];
break;
case 0xE8: //all
event = ["disabled"];
break;
case 0xE6: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|nv201|SMART Payout|nv11|SMART Hopper
event = ["fraud_attempt", data[2]];
break;
case 0xE7: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["stacker_full"];
break;
case 0xE1: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|nv201|SMART Payout|nv11
event = ["note_cleared_from_front", data[2]];
break;
case 0xE2: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|nv201|SMART Payout|nv11
event = ["note_cleared_to_cashbox", data[2]];
break;
case 0xE3: //bv50|bv100|nv200|SMART Payout|nv11
event = ["cashbox_removed"];
break;
case 0xE4: //bv50|bv100|nv200|SMART Payout|nv11
event = ["cashbox_replaced"];
break;
case 0xE5: //nv200|nv201
event = ["barcode_ticket_validated"];
break;
case 0xD1: //nv200|nv201
event = ["barcode_ticket_acknowledge"];
break;
case 0xE0: //nv200
event = ["note_path_open"];
break;
case 0xB5: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|SMART Payout|nv11
event = ["channel_disable"];
break;
case 0xB6: //bv20|bv50|bv100|nv9usb|nv10usb|nv200|nv201|SMART Payout|nv11|SMART Hopper
event = ["initialing"];
break;
case 0xDA: //SMART payout|SMART Hopper|nv11
event = ["dispensing", data[2]];
break;
case 0xD2: //SMART payout|SMART Hopper|nv11
event = ["dispensed", data[2]];
break;
case 0xD2: //SMART payout|SMART Hopper|nv11
event = ["jammed", data[2]];
break;
case 0xD6: //SMART payout|SMART Hopper|nv11
event = ["halted", data[2]];
break;
case 0xD7: //SMART payout|SMART Hopper
event = ["floating", data[2]];
break;
case 0xD8: //SMART payout|SMART Hopper
event = ["floated", data[2]];
break;
case 0xD9: //SMART payout|SMART Hopper|nv11
event = ["timeout", data[2]];
break;
case 0xDC: //SMART payout|SMART Hopper|nv11
event = ["incomplete_payout", data[2]];
break;
case 0xDD: //SMART payout|SMART Hopper|nv11
event = ["incomplete_payout", data[2]];
break;
case 0xDE: //SMART Hopper
event = ["cashbox_paid", data[2]];
break;
case 0xDF: //SMART Hopper
event = ["coin_credit", data[2]];
break;
case 0xC4: //SMART Hopper
event = ["coin_mech_jammed"];
break;
case 0xC5: //SMART Hopper
event = ["coin_mech_return_pressed"];
break;
case 0xB7: //SMART Hopper
event = ["coin_mech_error"];
break;
case 0xC2: //SMART payout|SMART Hopper|nv11
event = ["emptying"];
break;
case 0xC3: //SMART payout|SMART Hopper|nv11
event = ["emptied"];
break;
case 0xB3: //SMART payout|SMART Hopper|nv11
event = ["smart_emptying", data[2]];
break;
case 0xB4: //SMART payout|SMART Hopper|nv11
event = ["smart_emptied", data[2]];
break;
case 0xDB: //SMART payout|nv11
event = ["note_stored_in_payout", data[2]];
break;
case 0xC6: //SMART payout|nv11
event = ["payout_out_of_service"];
break;
case 0xB0: //SMART payout
event = ["jam_recovery"];
break;
case 0xB1: //SMART payout
event = ["error_during_payout"];
break;
case 0xC9: //SMART payout|nv11
event = ["note_transfered to stacker", data[2]];
break;
case 0xCE: //SMART payout|nv11
event = ["note_held_in_bezel", data[2]];
break;
case 0xCB: //SMART payout|nv11
event = ["note_paid_into_store_at_powerup", data[2]];
break;
case 0xCB: //SMART payout|nv11
event = ["note_paid_into_stacker_at_powerup", data[2]];
break;
case 0xCD: //nv11
event = ["note_dispensed_at_powerup", data[2]];
break;
case 0xC7: //nv11
event = ["note_float_removed"];
break;
case 0xC8: //nv11
event = ["note_float_attached"];
break;
case 0xC9: //nv11
event = ["device_full"];
break;
//Reject reasons
case 0x0:
case 0x1:
case 0x2:
case 0x3:
case 0x4:
case 0x5:
case 0x6:
case 0x7:
case 0x8:
case 0x9:
case 0xa:
case 0xb:
case 0xc:
case 0xd:
case 0xe:
case 0xf:
case 0x10:
case 0x11:
case 0x12:
case 0x13:
case 0x14:
case 0x15:
case 0x16:
case 0x17:
case 0x18:
case 0x19:
case 0x1a:
case 0x1b:
case 0x1c:
event = ["note_rejected", data[1]];
break;
}
event && self.emit.apply(self, event);
}
} else {
self.emit('unregistered_data', buffer);
}
}
if (err) {
cb(err);
} else {
port.on('data', function (buffer) {
console.log("COM1 <= ", Array.prototype.slice.call(buffer, 0).map(function (item) {
return item.toString(16).toUpperCase()
}))
var ix = 0;
do {
var len = buffer[2] + 5;
var buf = new Buffer(len);
buffer.copy(buf, 0, ix, ix + len);
parseBuffer(buf);
ix += len;
} while (ix < buffer.length);
});
//wait a bit for port buffer to empty
setTimeout(function () {
commands.sync().enable_higher_protocol()
// self.initiateKeys();
if (enableOnInit) {
cb && cb();
self.enable(function () {
self.emit("ready");
});
} else {
commands.exec(function () {
cb && cb();
self.emit("ready");
});
}
}, 2000);
}
});
}
}
});
SSPInstance.prototype.__proto__ = EventEmitter.prototype;
module.exports = SSPInstance;