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# -*- coding: utf-8 -*-
"""
ldap.controls.openldap - classes for OpenLDAP-specific controls
See http://www.python-ldap.org/ for project details.
$Id: openldap.py,v 1.6 2015/10/24 16:21:56 stroeder Exp $
"""
import ldap.controls
from ldap.controls import ValueLessRequestControl,ResponseControl
from pyasn1.type import univ
from pyasn1.codec.ber import decoder
__all__ = [
'SearchNoOpControl',
'SearchNoOpMixIn',
]
class SearchNoOpControl(ValueLessRequestControl,ResponseControl):
"""
No-op control attached to search operations implementing sort of a
count operation
see http://www.openldap.org/its/index.cgi?findid=6598
"""
controlType = '1.3.6.1.4.1.4203.666.5.18'
def __init__(self,criticality=False):
self.criticality = criticality
class SearchNoOpControlValue(univ.Sequence):
pass
def decodeControlValue(self,encodedControlValue):
decodedValue,_ = decoder.decode(encodedControlValue,asn1Spec=self.SearchNoOpControlValue())
self.resultCode = int(decodedValue[0])
self.numSearchResults = int(decodedValue[1])
self.numSearchContinuations = int(decodedValue[2])
ldap.controls.KNOWN_RESPONSE_CONTROLS[SearchNoOpControl.controlType] = SearchNoOpControl
class SearchNoOpMixIn:
"""
Mix-in class to be used with class LDAPObject and friends.
It adds a convenience method noop_search_st() to LDAPObject
for easily using the no-op search control.
"""
def noop_search_st(self,base,scope=ldap.SCOPE_SUBTREE,filterstr='(objectClass=*)',timeout=-1):
try:
msg_id = self.search_ext(
base,
scope,
filterstr=filterstr,
attrlist=['1.1'],
timeout=timeout,
serverctrls=[SearchNoOpControl(criticality=True)],
)
_,_,_,search_response_ctrls = self.result3(msg_id,all=1,timeout=timeout)
except (
ldap.TIMEOUT,
ldap.TIMELIMIT_EXCEEDED,
ldap.SIZELIMIT_EXCEEDED,
ldap.ADMINLIMIT_EXCEEDED
),e:
self.abandon(msg_id)
raise e
else:
noop_srch_ctrl = [
c
for c in search_response_ctrls
if c.controlType==SearchNoOpControl.controlType
]
if noop_srch_ctrl:
return noop_srch_ctrl[0].numSearchResults,noop_srch_ctrl[0].numSearchContinuations
else:
return (None,None)