334 lines
14 KiB
Python
334 lines
14 KiB
Python
#!/usr/bin/python
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import copy
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import datetime
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import dateutil.parser
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import dateutil.tz
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import ldap
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import ldap.modlist as modlist
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import logging
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import pytz
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class LdapServer(object):
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uri = None
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dn = None
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pwd = None
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v2 = None
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con = 0
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def __init__(self,uri,dn=None,pwd=None,v2=None,raiseOnError=False, logger=False):
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self.uri = uri
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self.dn = dn
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self.pwd = pwd
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self.raiseOnError = raiseOnError
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if v2:
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self.v2=True
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if logger:
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self.logger = logger
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else:
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self.logger = logging.getLogger()
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def _error(self,error,level=logging.WARNING):
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if self.raiseOnError:
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raise LdapServerException(error)
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else:
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self.logger.log(level, error)
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def connect(self):
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if self.con == 0:
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try:
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con = ldap.initialize(self.uri)
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if self.v2:
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con.protocol_version = ldap.VERSION2
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else:
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con.protocol_version = ldap.VERSION3
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if self.dn:
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con.simple_bind_s(self.dn,self.pwd)
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self.con = con
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return True
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except ldap.LDAPError, e:
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self._error('LdapServer - Error connecting and binding to LDAP server : %s' % e,logging.CRITICAL)
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return False
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return True
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def get_scope(self, scope):
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if scope == 'base':
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return ldap.SCOPE_BASE
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elif scope == 'one':
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return ldap.SCOPE_ONELEVEL
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elif scope == 'sub':
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return ldap.SCOPE_SUBTREE
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raise Exception("Unknown LDAP scope '%s'" % scope)
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def search(self, basedn, filterstr='(objectClass=*)', attrs=[], sizelimit=0, scope='sub'):
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res_id = self.con.search(basedn, self.get_scope(scope), filterstr, attrs)
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ret = {}
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c=0
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while 1:
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res_type, res_data = self.con.result(res_id,0)
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if res_data == [] or sizelimit!=0 and c>sizelimit:
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break
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else:
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if res_type == ldap.RES_SEARCH_ENTRY:
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ret[res_data[0][0]]=res_data[0][1]
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c=c+1
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return ret
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def add_object(self,dn,attrs):
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ldif = modlist.addModlist(attrs)
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try:
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self.logger.debug("LdapServer - Add %s" % dn)
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self.con.add_s(dn,ldif)
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return True
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except ldap.LDAPError, e:
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self._error("LdapServer - Error adding %s : %s" % (dn,e), logging.ERROR)
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return False
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def update_object(self, dn, old, new, ignore_attrs=[]):
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ldif = modlist.modifyModlist(old, new, ignore_attr_types=ignore_attrs)
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if ldif == []:
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return True
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try:
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self.con.modify_s(dn,ldif)
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return True
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except ldap.LDAPError, e:
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self._error("LdapServer - Error updating %s : %s\nOld : %s\nNew : %s" % (dn, e, old, new), logging.ERROR)
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return False
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def update_need(self, old, new, ignore_attrs=[]):
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ldif = modlist.modifyModlist(old, new, ignore_attr_types=ignore_attrs)
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if ldif == []:
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return False
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return True
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def get_changes(self, old, new, ignore_attrs=[]):
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return modlist.modifyModlist(old, new, ignore_attr_types=ignore_attrs)
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def format_changes(self, old, new, ignore_attrs=[], prefix=''):
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msg = []
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for (op, attr, val) in modlist.modifyModlist(old, new, ignore_attr_types=ignore_attrs):
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if op == ldap.MOD_ADD:
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op = 'ADD'
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elif op == ldap.MOD_DELETE:
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op = 'DELETE'
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elif op == ldap.MOD_REPLACE:
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op = 'REPLACE'
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else:
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op = 'UNKNOWN (=%s)' % op
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if val is None and op == 'DELETE':
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msg.append('%s - %s %s' % (prefix, op, attr))
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else:
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msg.append('%s - %s %s: %s' % (prefix, op, attr, val))
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return '\n'.join(msg)
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def rename_object(self,dn,new_rdn):
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try:
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self.logger.debug("LdapServer - Rename %s in %s" % (dn,new_rdn))
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self.con.rename_s(dn,new_rdn)
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return True
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except ldap.LDAPError, e:
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self._error("LdapServer - Error renaming %s in %s : %s" % (dn,new_rdn,e), logging.ERROR)
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return False
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def drop_object(self,dn):
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try:
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self.logger.debug("LdapServer - Delete %s" % dn)
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self.con.delete_s(dn)
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return True
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except ldap.LDAPError, e:
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self._error("LdapServer - Error deleting %s : %s" % (dn,e), logging.ERROR)
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return False
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def get_dn(self,obj):
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return obj[0][0]
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def get_attr(self,obj,attr,all=None,default=None):
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if attr not in obj:
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for k in obj:
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if k.lower() == attr.lower():
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attr = k
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break
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if all is not None:
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if attr in obj:
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return obj[attr]
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else:
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return default or []
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else:
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if attr in obj:
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return obj[attr][0]
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else:
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return default
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class LdapServerException(BaseException):
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def __init__(self,msg):
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BaseException.__init__(self, msg)
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#
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# Helpers
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#
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def parse_datetime(value, to_timezone=None, default_timezone=None, naive=None):
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"""
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Convert LDAP date string to datetime.datetime object
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:param value: The LDAP date string to convert
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:param to_timezone: If specified, the return datetime will be converted to this
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specific timezone (optional, default : timezone of the LDAP date string)
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:param default_timezone: The timezone used if LDAP date string does not specified
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the timezone (optional, default : server local timezone)
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:param naive: Use naive datetime : return naive datetime object (without timezone conversion from LDAP)
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"""
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assert to_timezone is None or isinstance(to_timezone, datetime.tzinfo) or isinstance(to_timezone, str), 'to_timezone must be None, a datetime.tzinfo object or a string (not %s)' % type(to_timezone)
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assert default_timezone is None or isinstance(default_timezone, datetime.tzinfo) or isinstance(default_timezone, pytz.tzinfo.DstTzInfo) or isinstance(default_timezone, str), 'default_timezone parameter must be None, a string, a pytz.tzinfo.DstTzInfo or a datetime.tzinfo object (not %s)' % type(default_timezone)
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date = dateutil.parser.parse(value, dayfirst=False)
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if not date.tzinfo:
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if naive:
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return date
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if not default_timezone:
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default_timezone = pytz.utc
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elif default_timezone == 'local':
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default_timezone = dateutil.tz.tzlocal()
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elif isinstance(default_timezone, str):
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default_timezone = pytz.timezone(default_timezone)
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if isinstance(default_timezone, pytz.tzinfo.DstTzInfo):
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date = default_timezone.localize(date)
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elif isinstance(default_timezone, datetime.tzinfo):
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date = date.replace(tzinfo=default_timezone)
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else:
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raise Exception("It's not supposed to happen!")
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elif naive:
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return date.replace(tzinfo=None)
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if to_timezone:
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if to_timezone == 'local':
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to_timezone = dateutil.tz.tzlocal()
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elif isinstance(to_timezone, str):
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to_timezone = pytz.timezone(to_timezone)
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return date.astimezone(to_timezone)
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return date
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def parse_date(value, to_timezone=None, default_timezone=None, naive=None):
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"""
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Convert LDAP date string to datetime.date object
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:param value: The LDAP date string to convert
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:param to_timezone: If specified, the return datetime will be converted to this
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specific timezone (optional, default : timezone of the LDAP date string)
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:param default_timezone: The timezone used if LDAP date string does not specified
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the timezone (optional, default : server local timezone)
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:param naive: Use naive datetime : do not handle timezone conversion from LDAP
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"""
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return parse_datetime(value, to_timezone, default_timezone, naive).date()
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def format_datetime(value, from_timezone=None, to_timezone=None, naive=None):
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"""
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Convert datetime.datetime object to LDAP date string
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:param value: The datetime.datetime object to convert
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:param from_timezone: The timezone used if datetime.datetime object is naive (no tzinfo)
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(optional, default : server local timezone)
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:param to_timezone: The timezone used in LDAP (optional, default : UTC)
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:param naive: Use naive datetime : datetime store as UTC in LDAP (without conversion)
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"""
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assert isinstance(value, datetime.datetime), 'First parameter must be an datetime.datetime object (not %s)' % type(value)
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assert from_timezone is None or isinstance(from_timezone, datetime.tzinfo) or isinstance(from_timezone, pytz.tzinfo.DstTzInfo) or isinstance(from_timezone, str), 'from_timezone parameter must be None, a string, a pytz.tzinfo.DstTzInfo or a datetime.tzinfo object (not %s)' % type(from_timezone)
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assert to_timezone is None or isinstance(to_timezone, datetime.tzinfo) or isinstance(to_timezone, str), 'to_timezone must be None, a datetime.tzinfo object or a string (not %s)' % type(to_timezone)
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if not value.tzinfo and not naive:
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if not from_timezone or from_timezone == 'local':
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from_timezone = dateutil.tz.tzlocal()
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elif isinstance(from_timezone, str):
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from_timezone = pytz.timezone(from_timezone)
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if isinstance(from_timezone, pytz.tzinfo.DstTzInfo):
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from_value = from_timezone.localize(value)
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elif isinstance(from_timezone, datetime.tzinfo):
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from_value = value.replace(tzinfo=from_timezone)
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else:
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raise Exception("It's not supposed to happen!")
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elif naive:
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from_value = value.replace(tzinfo=pytz.utc)
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else:
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from_value = copy.deepcopy(value)
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if not to_timezone:
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to_timezone = pytz.utc
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elif to_timezone == 'local':
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to_timezone = dateutil.tz.tzlocal()
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elif isinstance(to_timezone, str):
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to_timezone = pytz.timezone(to_timezone)
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to_value = from_value.astimezone(to_timezone)
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datestring = to_value.strftime('%Y%m%d%H%M%S%z')
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if datestring.endswith('+0000'):
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datestring = datestring.replace('+0000', 'Z')
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return datestring
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def format_date(value, from_timezone=None, to_timezone=None, naive=None):
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"""
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Convert datetime.date object to LDAP date string
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:param value: The datetime.date object to convert
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:param from_timezone: The timezone used if datetime.datetime object is naive (no tzinfo)
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(optional, default : server local timezone)
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:param to_timezone: The timezone used in LDAP (optional, default : UTC)
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:param naive: Use naive datetime : do not handle timezone conversion before formating
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and return datetime as UTC (because LDAP required a timezone)
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"""
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assert isinstance(value, datetime.date), 'First parameter must be an datetime.date object (not %s)' % type(value)
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return format_datetime(datetime.datetime.combine(value, datetime.datetime.min.time()), from_timezone, to_timezone, naive)
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#
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# Tests
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#
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if __name__ == '__main__':
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now = datetime.datetime.now().replace(tzinfo=dateutil.tz.tzlocal())
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print "Now = %s" % now
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datestring_now = format_datetime(now)
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print "format_datetime : %s" % datestring_now
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print "format_datetime (from_timezone=utc) : %s" % format_datetime(now.replace(tzinfo=None), from_timezone=pytz.utc)
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print "format_datetime (from_timezone=local) : %s" % format_datetime(now.replace(tzinfo=None), from_timezone=dateutil.tz.tzlocal())
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print "format_datetime (from_timezone='local') : %s" % format_datetime(now.replace(tzinfo=None), from_timezone='local')
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print "format_datetime (from_timezone=Paris) : %s" % format_datetime(now.replace(tzinfo=None), from_timezone='Europe/Paris')
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print "format_datetime (to_timezone=utc) : %s" % format_datetime(now, to_timezone=pytz.utc)
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print "format_datetime (to_timezone=local) : %s" % format_datetime(now, to_timezone=dateutil.tz.tzlocal())
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print "format_datetime (to_timezone='local') : %s" % format_datetime(now, to_timezone='local')
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print "format_datetime (to_timezone=Tokyo) : %s" % format_datetime(now, to_timezone='Asia/Tokyo')
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print "format_datetime (naive=True) : %s" % format_datetime(now, naive=True)
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print "format_date : %s" % format_date(now)
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print "format_date (from_timezone=utc) : %s" % format_date(now.replace(tzinfo=None), from_timezone=pytz.utc)
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print "format_date (from_timezone=local) : %s" % format_date(now.replace(tzinfo=None), from_timezone=dateutil.tz.tzlocal())
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print "format_date (from_timezone='local') : %s" % format_date(now.replace(tzinfo=None), from_timezone='local')
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print "format_date (from_timezone=Paris) : %s" % format_date(now.replace(tzinfo=None), from_timezone='Europe/Paris')
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print "format_date (to_timezone=utc) : %s" % format_date(now, to_timezone=pytz.utc)
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print "format_date (to_timezone=local) : %s" % format_date(now, to_timezone=dateutil.tz.tzlocal())
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print "format_date (to_timezone='local') : %s" % format_date(now, to_timezone='local')
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print "format_date (to_timezone=Tokyo) : %s" % format_date(now, to_timezone='Asia/Tokyo')
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print "format_date (naive=True) : %s" % format_date(now, naive=True)
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print "parse_datetime : %s" % parse_datetime(datestring_now)
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print "parse_datetime (default_timezone=utc) : %s" % parse_datetime(datestring_now[0:-1], default_timezone=pytz.utc)
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print "parse_datetime (default_timezone=local) : %s" % parse_datetime(datestring_now[0:-1], default_timezone=dateutil.tz.tzlocal())
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print "parse_datetime (default_timezone='local') : %s" % parse_datetime(datestring_now[0:-1], default_timezone='local')
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print "parse_datetime (default_timezone=Paris) : %s" % parse_datetime(datestring_now[0:-1], default_timezone='Europe/Paris')
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print "parse_datetime (to_timezone=utc) : %s" % parse_datetime(datestring_now, to_timezone=pytz.utc)
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print "parse_datetime (to_timezone=local) : %s" % parse_datetime(datestring_now, to_timezone=dateutil.tz.tzlocal())
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print "parse_datetime (to_timezone='local') : %s" % parse_datetime(datestring_now, to_timezone='local')
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print "parse_datetime (to_timezone=Tokyo) : %s" % parse_datetime(datestring_now, to_timezone='Asia/Tokyo')
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print "parse_datetime (naive=True) : %s" % parse_datetime(datestring_now, naive=True)
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print "parse_date : %s" % parse_date(datestring_now)
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print "parse_date (default_timezone=utc) : %s" % parse_date(datestring_now[0:-1], default_timezone=pytz.utc)
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print "parse_date (default_timezone=local) : %s" % parse_date(datestring_now[0:-1], default_timezone=dateutil.tz.tzlocal())
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print "parse_date (default_timezone='local') : %s" % parse_date(datestring_now[0:-1], default_timezone='local')
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print "parse_date (default_timezone=Paris) : %s" % parse_date(datestring_now[0:-1], default_timezone='Europe/Paris')
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print "parse_date (to_timezone=utc) : %s" % parse_date(datestring_now, to_timezone=pytz.utc)
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print "parse_date (to_timezone=local) : %s" % parse_date(datestring_now, to_timezone=dateutil.tz.tzlocal())
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print "parse_date (to_timezone='local') : %s" % parse_date(datestring_now, to_timezone='local')
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print "parse_date (to_timezone=Tokyo) : %s" % parse_date(datestring_now, to_timezone='Asia/Tokyo')
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print "parse_date (naive=True) : %s" % parse_date(datestring_now, naive=True)
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