def opgrp_hdr(req):
"""Return a OPERATION group with standard header fields set mostly from request"""
opgrp = ipp.ippgroup(ipp.IPP_TAG_OPERATION)
charset = ipp.ippvalue(ipp.IPP_TAG_CHARSET)
opgrp.setvalue(set_copy_or_default(req, charset, 'attributes-charset'))
lang = ipp.ippvalue(ipp.IPP_TAG_LANGUAGE)
opgrp.setvalue(
set_copy_or_default(req, lang, 'attributes-natural-language'))
return opgrp
def get_printers(req):
"""Get the list of printers and requested attributes"""
# Get the list of requested attributes from the request
req_al = req.find_attribute('requested-attributes')
try:
# Just get the requested attributes strings
if req_al:
req_al = attrib_tools.expand_multi_attributes(req_al)
# Now get the list of available printers
ptr_list = Config_data.list_printers()
# Set up response
response = ipp.ipp(request=req)
response.setrespcode(ipp.IPP_OK, req.id)
response.pushvalue(opgrp_hdr(req))
for ptr in ptr_list:
ptrgrp = ipp.ippgroup(ipp.IPP_TAG_PRINTER)
ptratts = Config_data.get_config(ptr, req_al)
for attitem in ptratts:
name, typenum, attlist = attitem
val = ipp.ippvalue(typenum)
val.setnamevalues(name, attlist)
ptrgrp.setvalue(val)
response.pushvalue(ptrgrp)
return response.generate()
except ValueError:
return ipp_status(req, 'IPP_INTERNAL_ERROR', 'Error in get_printers()')
def ipp_status(req, code, msg):
"""Deliver a status message back to sender"""
lmsg = "Op code %s returning result %s - %s" % (
ipp.op_to_name[req.statuscode], code, msg)
syslog.syslog(syslog.LOG_WARNING, lmsg)
response = ipp.ipp(request=req)
response.setrespcode(code, req.id) # If code is a string it gets converted
opgrp = opgrp_hdr(req)
msgv = ipp.ippvalue(ipp.IPP_TAG_TEXT)
msgv.setnamevalues('status-message', msg)
opgrp.setvalue(msgv)
response.pushvalue(opgrp)
return response.generate()
def created_job_ok(req, jobnum):
"""Return response that document was sent OK"""
response = ipp.ipp(request=req)
response.setrespcode(ipp.IPP_OK, req.id)
opgrp = opgrp_hdr(req)
msg = ipp.ippvalue(ipp.IPP_TAG_TEXT)
msg.setnamevalues('status-message', 'successful-ok')
opgrp.setvalue(msg)
response.pushvalue(opgrp)
jobgrp = ipp.ippgroup(ipp.IPP_TAG_JOB)
idval = ipp.ippvalue(ipp.IPP_TAG_INTEGER)
idval.setnamevalues('job-id', jobnum)
jobgrp.setvalue(idval)
iduri = "ipp://%s:631/jobs/%d" % (Config_data.serverip(), jobnum)
idval = ipp.ippvalue(ipp.IPP_TAG_URI)
idval.setnamevalues('job-uri', iduri)
jobgrp.setvalue(idval)
jobstat = ipp.ippvalue(ipp.IPP_TAG_ENUM)
jobstat.setnamevalues('job-state', ipp.IPP_JOB_PROCESSING)
jobgrp.setvalue(jobstat)
response.pushvalue(jobgrp)
return response.generate()
def get_ptr_attributes(req, pname, al):
"""Get given attributes for given printer"""
# Set up response
response = ipp.ipp(request=req)
response.setrespcode(ipp.IPP_OK, req.id)
response.pushvalue(opgrp_hdr(req))
# Printer group stuff
ptrgrp = ipp.ippgroup(ipp.IPP_TAG_PRINTER)
ptratts = Config_data.get_config(pname, al)
# Add each attribute
for attitem in ptratts:
name, typenum, attlist = attitem
val = ipp.ippvalue(typenum)
val.setnamevalues(name, attlist)
ptrgrp.setvalue(val)
response.pushvalue(ptrgrp)
return response.generate()