Simple BLE service to send notifications via a Unix Domain Socket for debugging purposes.
NodeJS and npm are required to use bledebug.
For dependencies just execute npm install and you are ready to go.
Type node bledebug.js to start announcing the service. Depending on your setup sudo might be needed for execution. Further information regarding BLE setup on linux can be found on the bleno project website (https://github.com/noble/bleno).
Any message sent to the unix domain socket (/tmp/ble.sock) is published via a BLE notify message.
To send a message from any shellscript use client/bleecho.py.
Example for publishing the current date and afterwards greeting the world:
$ python bleecho.py $(date)
connecting to /tmp/ble.sock
Sending 'Fri Mar 23 12:59:26 UTC 2018'
$ python bleecho.py "hello world"
connecting to /tmp/ble.sock
Sending 'hello world'
$ python bleecho.py hello world
connecting to /tmp/ble.sock
Sending 'hello world'
Keep in mind the length restrictions of BLE notifications!
SECURITY RISK: There are also hooks to react on BLE write requests in the bledebug.js file. Since the service is usually running as root and there is no special protection for the BLE service, this can easily lead to a system compromise!