Description:

This is MQTT client that emulates keyboard events using linux uinput module (/dev/uinput). It doesn't depend on X11 or user sessions and may be run as a system daemon Default topic is virtualkeyboard/emit. Payload is a list of keys separated by comma. All keys in the list will be pressed then released along. Supported keys listed at the top of keyboard.go. Other keys can be added from <linux/input-event-codes.h>. To get the code of necessary key run

sudo showkey

Dependencies:

go get github.com/eclipse/paho.mqtt.golang go get github.com/pborman/getopt/v2 go get github.com/rs/xid

Build:

make
sudo make install

Usage:

run manually:

sudo virtualkeyboard-mqtt --url tcp://broker-host:port

run as root is needed to access /dev/uinput udev rules file provided to automatically change permission of /dev/uinput; put .rules file into /etc/udev/rules.d

run as systemd service:

sudo systemctl enable virtualkeyboard-mqtt
sudo systemctl start virtualkeyboard-mqtt

Test:

mosquitto_pub -h 127.0.0.1 -t virtualkeyboard/emit -m 'ctrl,alt,del'
mosquitto_pub -h 127.0.0.1 -t virtualkeyboard/emit -m 'f1'

License:

MIT