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deb-python-pyldap/Lib/ldap/__init__.py

96 lines
2.3 KiB

"""
ldap - base module
See http://www.python-ldap.org/ for details.
$Id: __init__.py,v 1.102 2016/01/18 15:17:30 stroeder Exp $
"""
# This is also the overall release version number
__version__ = '2.4.25'
import sys
if __debug__:
# Tracing is only supported in debugging mode
import traceback
_trace_level = 0
_trace_file = sys.stderr
_trace_stack_limit = None
import _ldap
from _ldap import *
OPT_NAMES_DICT = {}
for k,v in vars(_ldap).items():
if k.startswith('OPT_'):
OPT_NAMES_DICT[v]=k
class DummyLock:
"""Define dummy class with methods compatible to threading.Lock"""
def __init__(self):
pass
def acquire(self):
pass
def release(self):
pass
try:
# Check if Python installation was build with thread support
import thread
except ImportError:
LDAPLockBaseClass = DummyLock
else:
import threading
LDAPLockBaseClass = threading.Lock
class LDAPLock:
"""
Mainly a wrapper class to log all locking events.
Note that this cumbersome approach with _lock attribute was taken
since threading.Lock is not suitable for sub-classing.
"""
_min_trace_level = 3
def __init__(self,lock_class=None,desc=''):
"""
lock_class
Class compatible to threading.Lock
desc
Description shown in debug log messages
"""
self._desc = desc
self._lock = (lock_class or LDAPLockBaseClass)()
def acquire(self):
if __debug__:
global _trace_level
if _trace_level>=self._min_trace_level:
_trace_file.write('***%s.acquire() %s %s\n' % (self.__class__.__name__,repr(self),self._desc))
return self._lock.acquire()
def release(self):
if __debug__:
global _trace_level
if _trace_level>=self._min_trace_level:
_trace_file.write('***%s.release() %s %s\n' % (self.__class__.__name__,repr(self),self._desc))
return self._lock.release()
# Create module-wide lock for serializing all calls into underlying LDAP lib
_ldap_module_lock = LDAPLock(desc='Module wide')
from ldap.functions import open,initialize,init,get_option,set_option,escape_str
from ldap.ldapobject import NO_UNIQUE_ENTRY
from ldap.dn import explode_dn,explode_rdn,str2dn,dn2str
del str2dn
del dn2str
# More constants
# For compability of 2.3 and 2.4 OpenLDAP API
OPT_DIAGNOSTIC_MESSAGE = OPT_ERROR_STRING