pkipplib : IPP and CUPS support for Python $Id$ # (c) 2003-2009 Jerome Alet # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . ======================================================================= This software is a Python library which can prepare IPP requests with the help of a somewhat high level API. These requests can then be sent to an IPP printer or print server (e.g. CUPS). This library can also parse IPP answers received, and create high level Python objects from them. Both of these actions can be done through an IPPRequest class and its instance methods. Finally, a CUPS class can be leveraged to easily deal with CUPS print servers. All of this library being written in the Python language, there's no need to link the code with the CUPS' API, which makes it independant of the CUPS version being installed. ======================================================================= Installation : -------------- 1 - Grab the latest version of this library from : http://www.pykota.com/software/pkipplib/ 2 - Extract the tarball : $ tar -zxf pkipplib-x.yy.tar.gz 3 - Install the Python module : $ cd pkipplib-x.yy $ python setup.py install NB : for the installation script to work, you need to install the python-dev package on your system first. ======================================================================= Examples : ---------- --- CUT --- # Parsing.py EXAMPLE from pkipplib import pkipplib # Read IPP datas from a CUPS job control file myfile = open("/var/spool/cups/c00155") ippdatas = myfile.read() myfile.close() # Parse these datas request = pkipplib.IPPRequest(ippdatas) request.parse() # Print the whole result as a string print request # Access one of the job's attributes directly print request.job["job-name"] --- CUT --- --- CUT --- # Building.py EXAMPLE from pkipplib import pkipplib # Create a CUPS_GET_DEFAULT request request = pkipplib.IPPRequest(operation_id=pkipplib.CUPS_GET_DEFAULT) request.operation["attributes-charset"] = ("charset", "utf-8") request.operation["attributes-natural-language"] = ("naturalLanguage", "en-us") # Get the request as binary datas ippdatas = request.dump() # Parse these datas back newrequest = pkipplib.IPPRequest(ippdatas) newrequest.parse() # Of course, the result of parsing matches what we created before. print newrequest.operation["attributes-natural-language"] --- CUT --- --- CUT --- # CUPS' API from pkipplib import pkipplib # Create a CUPS client instance # cups = pkipplib.CUPS(url="http://server:631", username="john", password="blah!") cups = pkipplib.CUPS() # High level API : retrieve info about job 3 : answer = cups.getJobAttributes(3) print answer.job["document-format"] # That's all folks ! # Lower level API : request = cups.newRequest(pkipplib.IPP_GET_PRINTER_ATTRIBUTES) request.operation["printer-uri"] = ("uri", cups.identifierToURI("printers", "HP2100")) for attribute in ("printer-uri-supported", "printer-type", "member-uris") : # IMPORTANT : here, despite the unusual syntax, we append to # the list of requested attributes : request.operation["requested-attributes"] = ("nameWithoutLanguage", attribute) # Sends this request to the CUPS server answer = cups.doRequest(request) # Print the answer as a string of text print answer --- CUT --- ======================================================================= Command line tools : pkipplib currently includes the following command line tools : * pksubscribe : can create or delete IPP subscriptions. See pksubscribe --help for details. examples : $ pksubscribe --cups http://localhost:631 \ --events printer-added,printer-deleted \ --recipient mynotifier \ --duration 0 $ pksubscribe --username root \ --password HacKMe \ --delete 34 58 98 * samplenotifier : can handle printer-added and printer-deleted notifications and automatically create or remove printers from PyKota's database (just adapt the code for other needs). samplenotifier is present in the notifiers/ directory, but won't be installed automatically. You must put it into CUPS' notifier directory, e.g. /usr/lib/cups/notifier/ In the future more command line tools will be included. ======================================================================= Please report any problem to the bug tracker at http://trac.pykota.com