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683 lines
24 KiB
Python
683 lines
24 KiB
Python
#!/usr/bin/env python
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# Unix SMB/CIFS implementation.
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# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2010
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# Copyright (C) Matthias Dieter Wallnoefer 2009
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#
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# Based on the original in EJS:
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# Copyright (C) Andrew Tridgell <tridge@samba.org> 2005
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""Convenience functions for using the SAM."""
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import samba
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import ldb
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import time
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import base64
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from samba import dsdb
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from samba.ndr import ndr_unpack, ndr_pack
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from samba.dcerpc import drsblobs, misc
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__docformat__ = "restructuredText"
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class SamDB(samba.Ldb):
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"""The SAM database."""
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hash_oid_name = {}
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def __init__(self, url=None, lp=None, modules_dir=None, session_info=None,
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credentials=None, flags=0, options=None, global_schema=True,
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auto_connect=True, am_rodc=None):
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self.lp = lp
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if not auto_connect:
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url = None
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elif url is None and lp is not None:
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url = lp.get("sam database")
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super(SamDB, self).__init__(url=url, lp=lp, modules_dir=modules_dir,
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session_info=session_info, credentials=credentials, flags=flags,
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options=options)
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if global_schema:
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dsdb._dsdb_set_global_schema(self)
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if am_rodc is not None:
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dsdb._dsdb_set_am_rodc(self, am_rodc)
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def connect(self, url=None, flags=0, options=None):
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if self.lp is not None:
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url = self.lp.private_path(url)
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super(SamDB, self).connect(url=url, flags=flags,
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options=options)
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def am_rodc(self):
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return dsdb._am_rodc(self)
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def domain_dn(self):
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return str(self.get_default_basedn())
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def enable_account(self, search_filter):
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"""Enables an account
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:param search_filter: LDAP filter to find the user (eg
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samccountname=name)
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"""
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res = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression=search_filter, attrs=["userAccountControl"])
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assert(len(res) == 1)
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user_dn = res[0].dn
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userAccountControl = int(res[0]["userAccountControl"][0])
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if userAccountControl & 0x2:
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# remove disabled bit
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userAccountControl = userAccountControl & ~0x2
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if userAccountControl & 0x20:
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# remove 'no password required' bit
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userAccountControl = userAccountControl & ~0x20
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mod = """
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dn: %s
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changetype: modify
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replace: userAccountControl
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userAccountControl: %u
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""" % (user_dn, userAccountControl)
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self.modify_ldif(mod)
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def force_password_change_at_next_login(self, search_filter):
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"""Forces a password change at next login
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:param search_filter: LDAP filter to find the user (eg
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samccountname=name)
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"""
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res = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression=search_filter, attrs=[])
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assert(len(res) == 1)
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user_dn = res[0].dn
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mod = """
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dn: %s
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changetype: modify
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replace: pwdLastSet
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pwdLastSet: 0
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""" % (user_dn)
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self.modify_ldif(mod)
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def newgroup(self, groupname, groupou=None, grouptype=None,
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description=None, mailaddress=None, notes=None, sd=None):
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"""Adds a new group with additional parameters
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:param groupname: Name of the new group
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:param grouptype: Type of the new group
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:param description: Description of the new group
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:param mailaddress: Email address of the new group
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:param notes: Notes of the new group
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:param sd: security descriptor of the object
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"""
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group_dn = "CN=%s,%s,%s" % (groupname, (groupou or "CN=Users"), self.domain_dn())
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# The new user record. Note the reliance on the SAMLDB module which
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# fills in the default informations
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ldbmessage = {"dn": group_dn,
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"sAMAccountName": groupname,
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"objectClass": "group"}
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if grouptype is not None:
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ldbmessage["groupType"] = "%d" % grouptype
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if description is not None:
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ldbmessage["description"] = description
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if mailaddress is not None:
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ldbmessage["mail"] = mailaddress
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if notes is not None:
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ldbmessage["info"] = notes
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if sd is not None:
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ldbmessage["nTSecurityDescriptor"] = ndr_pack(sd)
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self.add(ldbmessage)
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def deletegroup(self, groupname):
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"""Deletes a group
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:param groupname: Name of the target group
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"""
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groupfilter = "(&(sAMAccountName=%s)(objectCategory=%s,%s))" % (groupname, "CN=Group,CN=Schema,CN=Configuration", self.domain_dn())
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self.transaction_start()
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try:
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targetgroup = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression=groupfilter, attrs=[])
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if len(targetgroup) == 0:
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raise Exception('Unable to find group "%s"' % groupname)
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assert(len(targetgroup) == 1)
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self.delete(targetgroup[0].dn)
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except:
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self.transaction_cancel()
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raise
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else:
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self.transaction_commit()
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def add_remove_group_members(self, groupname, listofmembers,
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add_members_operation=True):
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"""Adds or removes group members
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:param groupname: Name of the target group
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:param listofmembers: Comma-separated list of group members
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:param add_members_operation: Defines if its an add or remove
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operation
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"""
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groupfilter = "(&(sAMAccountName=%s)(objectCategory=%s,%s))" % (groupname, "CN=Group,CN=Schema,CN=Configuration", self.domain_dn())
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groupmembers = listofmembers.split(',')
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self.transaction_start()
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try:
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targetgroup = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression=groupfilter, attrs=['member'])
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if len(targetgroup) == 0:
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raise Exception('Unable to find group "%s"' % groupname)
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assert(len(targetgroup) == 1)
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modified = False
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addtargettogroup = """
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dn: %s
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changetype: modify
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""" % (str(targetgroup[0].dn))
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for member in groupmembers:
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targetmember = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression="(|(sAMAccountName=%s)(CN=%s))" % (member, member), attrs=[])
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if len(targetmember) != 1:
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continue
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if add_members_operation is True and (targetgroup[0].get('member') is None or str(targetmember[0].dn) not in targetgroup[0]['member']):
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modified = True
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addtargettogroup += """add: member
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member: %s
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""" % (str(targetmember[0].dn))
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elif add_members_operation is False and (targetgroup[0].get('member') is not None and str(targetmember[0].dn) in targetgroup[0]['member']):
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modified = True
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addtargettogroup += """delete: member
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member: %s
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""" % (str(targetmember[0].dn))
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if modified is True:
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self.modify_ldif(addtargettogroup)
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except:
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self.transaction_cancel()
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raise
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else:
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self.transaction_commit()
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def newuser(self, username, password,
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force_password_change_at_next_login_req=False,
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useusernameascn=False, userou=None, surname=None, givenname=None,
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initials=None, profilepath=None, scriptpath=None, homedrive=None,
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homedirectory=None, jobtitle=None, department=None, company=None,
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description=None, mailaddress=None, internetaddress=None,
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telephonenumber=None, physicaldeliveryoffice=None, sd=None,
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setpassword=True):
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"""Adds a new user with additional parameters
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:param username: Name of the new user
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:param password: Password for the new user
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:param force_password_change_at_next_login_req: Force password change
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:param useusernameascn: Use username as cn rather that firstname +
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initials + lastname
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:param userou: Object container (without domainDN postfix) for new user
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:param surname: Surname of the new user
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:param givenname: First name of the new user
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:param initials: Initials of the new user
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:param profilepath: Profile path of the new user
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:param scriptpath: Logon script path of the new user
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:param homedrive: Home drive of the new user
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:param homedirectory: Home directory of the new user
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:param jobtitle: Job title of the new user
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:param department: Department of the new user
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:param company: Company of the new user
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:param description: of the new user
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:param mailaddress: Email address of the new user
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:param internetaddress: Home page of the new user
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:param telephonenumber: Phone number of the new user
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:param physicaldeliveryoffice: Office location of the new user
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:param sd: security descriptor of the object
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:param setpassword: optionally disable password reset
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"""
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displayname = ""
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if givenname is not None:
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displayname += givenname
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if initials is not None:
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displayname += ' %s.' % initials
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if surname is not None:
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displayname += ' %s' % surname
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cn = username
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if useusernameascn is None and displayname is not "":
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cn = displayname
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user_dn = "CN=%s,%s,%s" % (cn, (userou or "CN=Users"), self.domain_dn())
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dnsdomain = ldb.Dn(self, self.domain_dn()).canonical_str().replace("/", "")
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user_principal_name = "%s@%s" % (username, dnsdomain)
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# The new user record. Note the reliance on the SAMLDB module which
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# fills in the default informations
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ldbmessage = {"dn": user_dn,
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"sAMAccountName": username,
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"userPrincipalName": user_principal_name,
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"objectClass": "user"}
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if surname is not None:
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ldbmessage["sn"] = surname
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if givenname is not None:
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ldbmessage["givenName"] = givenname
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if displayname is not "":
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ldbmessage["displayName"] = displayname
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ldbmessage["name"] = displayname
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if initials is not None:
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ldbmessage["initials"] = '%s.' % initials
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if profilepath is not None:
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ldbmessage["profilePath"] = profilepath
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if scriptpath is not None:
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ldbmessage["scriptPath"] = scriptpath
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if homedrive is not None:
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ldbmessage["homeDrive"] = homedrive
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if homedirectory is not None:
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ldbmessage["homeDirectory"] = homedirectory
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if jobtitle is not None:
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ldbmessage["title"] = jobtitle
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if department is not None:
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ldbmessage["department"] = department
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if company is not None:
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ldbmessage["company"] = company
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if description is not None:
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ldbmessage["description"] = description
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if mailaddress is not None:
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ldbmessage["mail"] = mailaddress
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if internetaddress is not None:
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ldbmessage["wWWHomePage"] = internetaddress
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if telephonenumber is not None:
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ldbmessage["telephoneNumber"] = telephonenumber
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if physicaldeliveryoffice is not None:
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ldbmessage["physicalDeliveryOfficeName"] = physicaldeliveryoffice
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if sd is not None:
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ldbmessage["nTSecurityDescriptor"] = ndr_pack(sd)
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self.transaction_start()
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try:
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self.add(ldbmessage)
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# Sets the password for it
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if setpassword:
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self.setpassword("(samAccountName=%s)" % username, password,
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force_password_change_at_next_login_req)
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except:
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self.transaction_cancel()
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raise
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else:
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self.transaction_commit()
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def setpassword(self, search_filter, password,
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force_change_at_next_login=False, username=None):
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"""Sets the password for a user
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:param search_filter: LDAP filter to find the user (eg
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samccountname=name)
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:param password: Password for the user
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:param force_change_at_next_login: Force password change
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"""
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self.transaction_start()
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try:
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res = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression=search_filter, attrs=[])
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if len(res) == 0:
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raise Exception('Unable to find user "%s"' % (username or search_filter))
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assert(len(res) == 1)
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user_dn = res[0].dn
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setpw = """
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dn: %s
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changetype: modify
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replace: unicodePwd
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unicodePwd:: %s
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""" % (user_dn, base64.b64encode(("\"" + password + "\"").encode('utf-16-le')))
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self.modify_ldif(setpw)
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if force_change_at_next_login:
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self.force_password_change_at_next_login(
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"(dn=" + str(user_dn) + ")")
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# modify the userAccountControl to remove the disabled bit
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self.enable_account(search_filter)
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except:
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self.transaction_cancel()
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raise
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else:
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self.transaction_commit()
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def setexpiry(self, search_filter, expiry_seconds, no_expiry_req=False):
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"""Sets the account expiry for a user
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:param search_filter: LDAP filter to find the user (eg
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samaccountname=name)
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:param expiry_seconds: expiry time from now in seconds
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:param no_expiry_req: if set, then don't expire password
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"""
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self.transaction_start()
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try:
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res = self.search(base=self.domain_dn(), scope=ldb.SCOPE_SUBTREE,
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expression=search_filter,
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attrs=["userAccountControl", "accountExpires"])
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assert(len(res) == 1)
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user_dn = res[0].dn
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userAccountControl = int(res[0]["userAccountControl"][0])
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accountExpires = int(res[0]["accountExpires"][0])
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if no_expiry_req:
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userAccountControl = userAccountControl | 0x10000
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accountExpires = 0
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else:
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userAccountControl = userAccountControl & ~0x10000
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accountExpires = samba.unix2nttime(expiry_seconds + int(time.time()))
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setexp = """
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dn: %s
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changetype: modify
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replace: userAccountControl
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userAccountControl: %u
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replace: accountExpires
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accountExpires: %u
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""" % (user_dn, userAccountControl, accountExpires)
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self.modify_ldif(setexp)
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except:
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self.transaction_cancel()
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raise
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else:
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self.transaction_commit()
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def set_domain_sid(self, sid):
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"""Change the domain SID used by this LDB.
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:param sid: The new domain sid to use.
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"""
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dsdb._samdb_set_domain_sid(self, sid)
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def get_domain_sid(self):
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"""Read the domain SID used by this LDB. """
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return dsdb._samdb_get_domain_sid(self)
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domain_sid = property(get_domain_sid, set_domain_sid,
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"SID for the domain")
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def set_invocation_id(self, invocation_id):
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"""Set the invocation id for this SamDB handle.
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:param invocation_id: GUID of the invocation id.
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"""
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dsdb._dsdb_set_ntds_invocation_id(self, invocation_id)
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def get_invocation_id(self):
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"""Get the invocation_id id"""
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return dsdb._samdb_ntds_invocation_id(self)
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invocation_id = property(get_invocation_id, set_invocation_id,
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"Invocation ID GUID")
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def get_oid_from_attid(self, attid):
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return dsdb._dsdb_get_oid_from_attid(self, attid)
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def get_attid_from_lDAPDisplayName(self, ldap_display_name,
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is_schema_nc=False):
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return dsdb._dsdb_get_attid_from_lDAPDisplayName(self,
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ldap_display_name, is_schema_nc)
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def set_ntds_settings_dn(self, ntds_settings_dn):
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"""Set the NTDS Settings DN, as would be returned on the dsServiceName
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rootDSE attribute.
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This allows the DN to be set before the database fully exists
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:param ntds_settings_dn: The new DN to use
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"""
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dsdb._samdb_set_ntds_settings_dn(self, ntds_settings_dn)
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def get_ntds_GUID(self):
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"""Get the NTDS objectGUID"""
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return dsdb._samdb_ntds_objectGUID(self)
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def server_site_name(self):
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"""Get the server site name"""
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return dsdb._samdb_server_site_name(self)
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def load_partition_usn(self, base_dn):
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return dsdb._dsdb_load_partition_usn(self, base_dn)
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def set_schema(self, schema):
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self.set_schema_from_ldb(schema.ldb)
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def set_schema_from_ldb(self, ldb_conn):
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dsdb._dsdb_set_schema_from_ldb(self, ldb_conn)
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def dsdb_DsReplicaAttribute(self, ldb, ldap_display_name, ldif_elements):
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return dsdb._dsdb_DsReplicaAttribute(ldb, ldap_display_name, ldif_elements)
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def get_attribute_from_attid(self, attid):
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""" Get from an attid the associated attribute
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:param attid: The attribute id for searched attribute
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:return: The name of the attribute associated with this id
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"""
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if len(self.hash_oid_name.keys()) == 0:
|
|
self._populate_oid_attid()
|
|
if self.hash_oid_name.has_key(self.get_oid_from_attid(attid)):
|
|
return self.hash_oid_name[self.get_oid_from_attid(attid)]
|
|
else:
|
|
return None
|
|
|
|
def _populate_oid_attid(self):
|
|
"""Populate the hash hash_oid_name.
|
|
|
|
This hash contains the oid of the attribute as a key and
|
|
its display name as a value
|
|
"""
|
|
self.hash_oid_name = {}
|
|
res = self.search(expression="objectClass=attributeSchema",
|
|
controls=["search_options:1:2"],
|
|
attrs=["attributeID",
|
|
"lDAPDisplayName"])
|
|
if len(res) > 0:
|
|
for e in res:
|
|
strDisplay = str(e.get("lDAPDisplayName"))
|
|
self.hash_oid_name[str(e.get("attributeID"))] = strDisplay
|
|
|
|
def get_attribute_replmetadata_version(self, dn, att):
|
|
"""Get the version field trom the replPropertyMetaData for
|
|
the given field
|
|
|
|
:param dn: The on which we want to get the version
|
|
:param att: The name of the attribute
|
|
:return: The value of the version field in the replPropertyMetaData
|
|
for the given attribute. None if the attribute is not replicated
|
|
"""
|
|
|
|
res = self.search(expression="dn=%s" % dn,
|
|
scope=ldb.SCOPE_SUBTREE,
|
|
controls=["search_options:1:2"],
|
|
attrs=["replPropertyMetaData"])
|
|
if len(res) == 0:
|
|
return None
|
|
|
|
repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
|
|
str(res[0]["replPropertyMetaData"]))
|
|
ctr = repl.ctr
|
|
if len(self.hash_oid_name.keys()) == 0:
|
|
self._populate_oid_attid()
|
|
for o in ctr.array:
|
|
# Search for Description
|
|
att_oid = self.get_oid_from_attid(o.attid)
|
|
if self.hash_oid_name.has_key(att_oid) and\
|
|
att.lower() == self.hash_oid_name[att_oid].lower():
|
|
return o.version
|
|
return None
|
|
|
|
def set_attribute_replmetadata_version(self, dn, att, value,
|
|
addifnotexist=False):
|
|
res = self.search(expression="dn=%s" % dn,
|
|
scope=ldb.SCOPE_SUBTREE,
|
|
controls=["search_options:1:2"],
|
|
attrs=["replPropertyMetaData"])
|
|
if len(res) == 0:
|
|
return None
|
|
|
|
repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
|
|
str(res[0]["replPropertyMetaData"]))
|
|
ctr = repl.ctr
|
|
now = samba.unix2nttime(int(time.time()))
|
|
found = False
|
|
if len(self.hash_oid_name.keys()) == 0:
|
|
self._populate_oid_attid()
|
|
for o in ctr.array:
|
|
# Search for Description
|
|
att_oid = self.get_oid_from_attid(o.attid)
|
|
if self.hash_oid_name.has_key(att_oid) and\
|
|
att.lower() == self.hash_oid_name[att_oid].lower():
|
|
found = True
|
|
seq = self.sequence_number(ldb.SEQ_NEXT)
|
|
o.version = value
|
|
o.originating_change_time = now
|
|
o.originating_invocation_id = misc.GUID(self.get_invocation_id())
|
|
o.originating_usn = seq
|
|
o.local_usn = seq
|
|
|
|
if not found and addifnotexist and len(ctr.array) >0:
|
|
o2 = drsblobs.replPropertyMetaData1()
|
|
o2.attid = 589914
|
|
att_oid = self.get_oid_from_attid(o2.attid)
|
|
seq = self.sequence_number(ldb.SEQ_NEXT)
|
|
o2.version = value
|
|
o2.originating_change_time = now
|
|
o2.originating_invocation_id = misc.GUID(self.get_invocation_id())
|
|
o2.originating_usn = seq
|
|
o2.local_usn = seq
|
|
found = True
|
|
tab = ctr.array
|
|
tab.append(o2)
|
|
ctr.count = ctr.count + 1
|
|
ctr.array = tab
|
|
|
|
if found :
|
|
replBlob = ndr_pack(repl)
|
|
msg = ldb.Message()
|
|
msg.dn = res[0].dn
|
|
msg["replPropertyMetaData"] = ldb.MessageElement(replBlob,
|
|
ldb.FLAG_MOD_REPLACE,
|
|
"replPropertyMetaData")
|
|
self.modify(msg, ["local_oid:1.3.6.1.4.1.7165.4.3.14:0"])
|
|
|
|
def write_prefixes_from_schema(self):
|
|
dsdb._dsdb_write_prefixes_from_schema_to_ldb(self)
|
|
|
|
def get_partitions_dn(self):
|
|
return dsdb._dsdb_get_partitions_dn(self)
|
|
|
|
def set_minPwdAge(self, value):
|
|
m = ldb.Message()
|
|
m.dn = ldb.Dn(self, self.domain_dn())
|
|
m["minPwdAge"] = ldb.MessageElement(value, ldb.FLAG_MOD_REPLACE, "minPwdAge")
|
|
self.modify(m)
|
|
|
|
def get_minPwdAge(self):
|
|
res = self.search(self.domain_dn(), scope=ldb.SCOPE_BASE, attrs=["minPwdAge"])
|
|
if len(res) == 0:
|
|
return None
|
|
elif not "minPwdAge" in res[0]:
|
|
return None
|
|
else:
|
|
return res[0]["minPwdAge"][0]
|
|
|
|
def set_dsheuristics(self, dsheuristics):
|
|
m = ldb.Message()
|
|
m.dn = ldb.Dn(self, "CN=Directory Service,CN=Windows NT,CN=Services,%s"
|
|
% self.get_config_basedn().get_linearized())
|
|
if dsheuristics is not None:
|
|
m["dSHeuristics"] = ldb.MessageElement(dsheuristics,
|
|
ldb.FLAG_MOD_REPLACE, "dSHeuristics")
|
|
else:
|
|
m["dSHeuristics"] = ldb.MessageElement([], ldb.FLAG_MOD_DELETE,
|
|
"dSHeuristics")
|
|
self.modify(m)
|
|
|
|
def get_dsheuristics(self):
|
|
res = self.search("CN=Directory Service,CN=Windows NT,CN=Services,%s"
|
|
% self.get_config_basedn().get_linearized(),
|
|
scope=ldb.SCOPE_BASE, attrs=["dSHeuristics"])
|
|
if len(res) == 0:
|
|
dsheuristics = None
|
|
elif "dSHeuristics" in res[0]:
|
|
dsheuristics = res[0]["dSHeuristics"][0]
|
|
else:
|
|
dsheuristics = None
|
|
|
|
return dsheuristics
|
|
|
|
def create_ou(self, ou_dn, description=None, name=None, sd=None):
|
|
"""Creates an organizationalUnit object
|
|
:param ou_dn: dn of the new object
|
|
:param description: description attribute
|
|
:param name: name atttribute
|
|
:param sd: security descriptor of the object, can be
|
|
an SDDL string or security.descriptor type
|
|
"""
|
|
m = {"dn": ou_dn,
|
|
"objectClass": "organizationalUnit"}
|
|
|
|
if description:
|
|
m["description"] = description
|
|
if name:
|
|
m["name"] = name
|
|
|
|
if sd:
|
|
m["nTSecurityDescriptor"] = ndr_pack(sd)
|
|
self.add(m)
|