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advlib-ble

Wireless advertising packet decoding library for Bluetooth Low Energy. advlib-ble can be used standalone or, more commonly, as a processor module of the protocol-agnostic advlib library.

Overview of advlib-ble

advlib-ble is a lightweight Node.js package that implements the Core Bluetooth Specification and can be extended with libraries to decode service data and manufacturer-specific data outside of this specification.

Library	Decodes
advlib-ble-services	Service Data
advlib-ble-manufacturers	Manufacturer-Specific Data
advlib-ble-gatt	GATT Protocol-Specific Data

Installation

npm install advlib-ble

Hello advlib-ble!

const advlib = require('advlib-ble');

const LIBRARIES = [ require('advlib-ble-services'),
                    require('advlib-ble-manufacturers'),
                    require('advlib-ble-gatt' ];

let packet = 'c21d04acbe55daba16096164766c6962206279207265656c79416374697665';
let processedPacket = advlib.process(packet, LIBRARIES);

console.log(processedPacket);

Which should yield the following console output:

{ rxAdd: "random",
  txAdd: "random",
  type: "ADV_NONCONN_IND",
  length: 29,
  advA: "bada55beac04",
  name: "advlib by reelyActive" }

Options

advlib-ble supports the following options for its process function:

Property	Default	Description
ignoreProtocolOverhead	false	Ignore BLE-specific properties (txAdd, length, type, advA, etc.)
isPayloadOnly	false	Interpret data as the optional PDU payload only (i.e. without header or advertiser address)
indices	[]	URI-lookup indices such as Sniffypedia

For example, to ignore the Bluetooth Low Energy protocol overhead:

let packet = 'c21d04acbe55daba16096164766c6962206279207265656c79416374697665';
let options = { ignoreProtocolOverhead: true };
let processedPacket = advlib.process(packet, [], options);

Which should yield the following console output:

{ name: "advlib by reelyActive" }

If only the payload is available, the example above would be handled as follows:

let payload = '16096164766c6962206279207265656c79416374697665';
let options = { isPayloadOnly: true };
let processedPayload = advlib.process(packet, [], options);

Which should again yield the following console output:

{ name: "advlib by reelyActive" }

For example, to append implicit URIs using the Sniffypedia index:

let packet = '401490a3a947507b02011a0aff4c0010050a10b4f1e2';
let options = { indices: [ require('sniffypedia') ] };
let processedPacket = advlib.process(packet, [], options);

Which should yield the following console output:

{ uri: "https://sniffypedia.org/Organization/Apple_Inc/" }

Contributing

Discover how to contribute to this open source project which upholds a standard code of conduct.

Security

Consult our security policy for best practices using this open source software and to report vulnerabilities.

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.