Line Printer Daemon
This project implements Berkeley style line printer daemon in Javascript.
License
MIT
Installation
npm install -g lp-daemon
This will install lp-daemon globally. As an option you might wish to install it locally in a project as that project's dependency:
npm install lp-daemon
The project is exposing a function creating the server instance for its programmatic control.
Usage
On a global installation the following command is available:
lp-daemon --null
This command will start lp daemon with a backend dumping incoming requests to console, only.
lp-daemon --ipp=http://1.2.3.4:631/printers/%s
This time lp daemon is started with a backend forwarding print jobs to an IPP service at provided URL. In that URL occurrences of %s are replaced with queue name as given in a print job.
Running as a Service
This daemon is designed to run in foreground. Use software like systemd, forever or pm2 If you like to run it in background permanently.
Security Considerations
In Linux this software must be run as root, currently, for listening on port 515 as required. There are some countermeasures to this increased exposure to security vulnerabilities. Running the service in a docker container might limit the effects of a successful attack.