A small web-accessible print service that allows to print arbitrary PDF files over the internet for Windows. Uses the SumatraPDF executable to print via the command line.
Copy the config.js.example file to config.js.example and change the values. The host and port attributes are for socket binding, the ips attribute is an array of IP addresses (not ranges) that are allowed to connect to the service, and the secret attritubte provides an additional layer of security. The card and document printers are the printers the application will use to print membership cards and regular documents respectively. These need to be the full names. Don't forget to create a downloads folder in the services' directory.
In order to send a print command to this server, first let the client software assemble an object with the following properties:
secret: the print server secret.url: the URL to the PDF document that needs to be printed.printer: either'card'or'document', depending on which printer the PDF should be printed to.
Any extra properties are ignored by the server. This object needs to be formatted as a JSON-encoded string, and then be base64 encoded. The print server can then be queried on the specified host and port using a HTTP GET request on /, with the data attribute in the query data set to the base64 encoded data.
The server will respond with any one of these strings:
UNAUTHORIZED: either the wrong secret is used, or an unauthorized IP address is used.INVALID: an invalid printer type is passed.ERROR_UNKNOWN: an unknown error occured, this is most likely a server-side misconfiguration. Check the application log.OK: the PDF is successfully downloaded and locally stored, and printing of it is requested.
Even when OK is returned, there could still be errors with disconnected printers, ill-formatted PDF files and the likes. An OK doesn't guarantee that the document will correctly roll out of the printer. If something doesn't come out of the printer, check the application log.
A valid request to the server using the example config file looks like this.
> GET http://192.168.1.1:12345/?data=ew0KCSJzZWNyZXQiOiAiVGhpc1Rva2VuSXNOb3RTb1NlY3JldENoYW5nZUl0IiwNCgkidXJsIjogImh0dHA6Ly91bmVjLmVkdS5hei9hcHBsaWNhdGlvbi91cGxvYWRzLzIwMTQvMTIvcGRmLXNhbXBsZS5wZGYiLA0KCSJwcmludGVyIjogImRvY3VtZW50Ig0KfQ
< OK