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s4: regroup gpo modification in one function, set acl on files accordingly with ACL in LDAP
This commit is contained in:
Matthieu Patou
committed by
Andrew Bartlett
Andrew Bartlett
parent
08c59c38a2
commit
028c9b1c15
120
source4/scripting/python/samba/misc.py
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120
source4/scripting/python/samba/misc.py
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@ -0,0 +1,120 @@
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#!/usr/bin/python
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# Unix SMB/CIFS implementation.
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# Copyright (C) Matthieu Patou <mat@matws.net> 2009
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#
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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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import samba.xattr
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from samba.dcerpc import security, xattr
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from samba.ndr import ndr_pack, ndr_unpack
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def getntacl(file):
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attribute = samba.xattr.wrap_getxattr(file,xattr.XATTR_NTACL_NAME)
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anysid=security.dom_sid(security.SID_NT_SELF)
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ntacl = ndr_unpack(xattr.NTACL,attribute,1)
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return ntacl.info.as_sddl(anysid)
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def setntacl(file,sddl):
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ntacl=xattr.NTACL()
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ntacl.version = 1
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anysid=security.dom_sid(security.SID_NT_SELF)
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sd = security.descriptor.from_sddl(sddl, anysid)
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ntacl.info = sd
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attribute = samba.xattr.wrap_setxattr(file,xattr.XATTR_NTACL_NAME,ndr_pack(ntacl))
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# Takes the access mask of a DS ACE and transform them in a File ACE mask
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def ldapmask2filemask(ldm):
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RIGHT_DS_CREATE_CHILD = 0x00000001
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RIGHT_DS_DELETE_CHILD = 0x00000002
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RIGHT_DS_LIST_CONTENTS = 0x00000004
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ACTRL_DS_SELF = 0x00000008
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RIGHT_DS_READ_PROPERTY = 0x00000010
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RIGHT_DS_WRITE_PROPERTY = 0x00000020
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RIGHT_DS_DELETE_TREE = 0x00000040
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RIGHT_DS_LIST_OBJECT = 0x00000080
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RIGHT_DS_CONTROL_ACCESS = 0x00000100
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FILE_READ_DATA = 0x0001
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FILE_LIST_DIRECTORY = 0x0001
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FILE_WRITE_DATA = 0x0002
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FILE_ADD_FILE = 0x0002
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FILE_APPEND_DATA = 0x0004
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FILE_ADD_SUBDIRECTORY = 0x0004
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FILE_CREATE_PIPE_INSTANCE = 0x0004
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FILE_READ_EA = 0x0008
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FILE_WRITE_EA = 0x0010
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FILE_EXECUTE = 0x0020
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FILE_TRAVERSE = 0x0020
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FILE_DELETE_CHILD = 0x0040
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FILE_READ_ATTRIBUTES = 0x0080
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FILE_WRITE_ATTRIBUTES = 0x0100
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DELETE = 0x00010000
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READ_CONTROL = 0x00020000
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WRITE_DAC = 0x00040000
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WRITE_OWNER = 0x00080000
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SYNCHRONIZE = 0x00100000
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STANDARD_RIGHTS_ALL = 0x001F0000
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filemask = ldm & STANDARD_RIGHTS_ALL
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#filemask = 0
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if( (ldm & RIGHT_DS_READ_PROPERTY) and (ldm & RIGHT_DS_LIST_CONTENTS) ):
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filemask = filemask | (SYNCHRONIZE | FILE_LIST_DIRECTORY |\
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FILE_READ_ATTRIBUTES | FILE_READ_EA |\
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FILE_READ_DATA | FILE_EXECUTE)
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if( (ldm & RIGHT_DS_WRITE_PROPERTY) ):
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filemask = filemask | (SYNCHRONIZE | FILE_WRITE_DATA |\
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FILE_APPEND_DATA | FILE_WRITE_EA |\
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FILE_WRITE_ATTRIBUTES | FILE_ADD_FILE |\
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FILE_ADD_SUBDIRECTORY)
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if( (ldm & RIGHT_DS_CREATE_CHILD) ):
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filemask = filemask | (FILE_ADD_SUBDIRECTORY | FILE_ADD_FILE)
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if( (ldm & RIGHT_DS_DELETE_CHILD) ):
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filemask = filemask | FILE_DELETE_CHILD
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return filemask
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# This function takes an the SDDL representation of a DS
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# ACL and return the SDDL representation of this ACL adapted
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# for files. It's used for Policy object provision
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def dsacl2fsacl(dssddl):
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anysid = security.dom_sid(security.SID_NT_SELF)
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ref = security.descriptor.from_sddl(dssddl,anysid)
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fdescr = security.descriptor()
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fdescr.owner_sid = ref.owner_sid
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fdescr.group_sid = ref.group_sid
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fdescr.type = ref.type
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fdescr.revision = ref.revision
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fdescr.sacl = ref.sacl
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aces = ref.dacl.aces
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for i in range(0,len(aces)):
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ace = aces[i]
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if not ace.type & security.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT and str(ace.trustee) != security.SID_BUILTIN_PREW2K:
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# if fdescr.type & security.SEC_DESC_DACL_AUTO_INHERITED:
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ace.flags = ace.flags | security.SEC_ACE_FLAG_OBJECT_INHERIT | security.SEC_ACE_FLAG_CONTAINER_INHERIT
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if str(ace.trustee) == security.SID_CREATOR_OWNER:
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# For Creator/Owner the IO flag is set as this ACE has only a sense for child objects
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ace.flags = ace.flags | security.SEC_ACE_FLAG_INHERIT_ONLY
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ace.access_mask = ldapmask2filemask(ace.access_mask)
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fdescr.dacl_add(ace)
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return fdescr.as_sddl(anysid)
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@ -47,7 +47,8 @@ from samba import DS_DOMAIN_FUNCTION_2003, DS_DOMAIN_FUNCTION_2008, DS_DC_FUNCTI
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from samba.samdb import SamDB
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from samba.idmap import IDmapDB
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from samba.dcerpc import security
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from samba.ndr import ndr_pack
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from samba.misc import setntacl,dsacl2fsacl
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from samba.ndr import ndr_pack,ndr_unpack
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import urllib
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from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE, LdbError
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from ms_display_specifiers import read_ms_ldif
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@ -56,7 +57,6 @@ from provisionbackend import LDBBackend, ExistingBackend, FDSBackend, OpenLDAPBa
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from provisionexceptions import ProvisioningError, InvalidNetbiosName
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from signal import SIGTERM
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from dcerpc.misc import SEC_CHAN_BDC, SEC_CHAN_WKSTA
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__docformat__ = "restructuredText"
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def find_setup_dir():
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@ -828,6 +828,46 @@ def setup_self_join(samdb, names,
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"DNSPASS_B64": b64encode(dnspass),
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})
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def set_gpo_acl(path,acl,setfileacl):
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if setfileacl:
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setntacl(path,acl)
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for root, dirs, files in os.walk(path, topdown=False):
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for name in files:
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setntacl(os.path.join(root, name),acl)
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for name in dirs:
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setntacl(os.path.join(root, name),acl)
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def setup_gpo(paths,names,samdb,policyguid,policyguid_dc,domainsid,setfileacl):
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policy_path = os.path.join(paths.sysvol, names.dnsdomain, "Policies",
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"{" + policyguid + "}")
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os.makedirs(policy_path, 0755)
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open(os.path.join(policy_path, "GPT.INI"), 'w').write(
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"[General]\r\nVersion=65543")
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os.makedirs(os.path.join(policy_path, "MACHINE"), 0755)
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os.makedirs(os.path.join(policy_path, "USER"), 0755)
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policy_path_dc = os.path.join(paths.sysvol, names.dnsdomain, "Policies",
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"{" + policyguid_dc + "}")
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os.makedirs(policy_path_dc, 0755)
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open(os.path.join(policy_path_dc, "GPT.INI"), 'w').write(
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"[General]\r\nVersion=2")
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os.makedirs(os.path.join(policy_path_dc, "MACHINE"), 0755)
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os.makedirs(os.path.join(policy_path_dc, "USER"), 0755)
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# call setntacl ...
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res = samdb.search(base="CN={%s},CN=Policies,CN=System,%s"%(policyguid,names.domaindn),
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attrs=["nTSecurityDescriptor"],
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expression="", scope=SCOPE_BASE)
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assert(len(res) > 0)
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acl = ndr_unpack(security.descriptor,str(res[0]["nTSecurityDescriptor"])).as_sddl(security.dom_sid("S-1-5-21-1"))
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set_gpo_acl(policy_path_dc,dsacl2fsacl(acl),setfileacl)
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res = samdb.search(base="CN={%s},CN=Policies,CN=System,%s"%(policyguid_dc,names.domaindn),
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attrs=["nTSecurityDescriptor"],
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expression="", scope=SCOPE_BASE)
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assert(len(res) > 0)
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acl = ndr_unpack(security.descriptor,str(res[0]["nTSecurityDescriptor"])).as_sddl(security.dom_sid("S-1-5-21-1"))
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set_gpo_acl(policy_path,dsacl2fsacl(acl),setfileacl)
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def setup_samdb(path, setup_path, session_info, provision_backend, lp,
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names, message,
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@ -1054,7 +1094,7 @@ def provision(setup_dir, message, session_info,
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sitename=None,
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ol_mmr_urls=None, ol_olc=None,
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setup_ds_path=None, slapd_path=None, nosync=False,
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ldap_dryrun_mode=False):
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ldap_dryrun_mode=False,setfileacl=False):
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"""Provision samba4
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:note: caution, this wipes all existing data!
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@ -1253,22 +1293,7 @@ def provision(setup_dir, message, session_info,
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assert(paths.sysvol is not None)
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# Set up group policies (domain policy and domain controller policy)
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policy_path = os.path.join(paths.sysvol, names.dnsdomain, "Policies",
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"{" + policyguid + "}")
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os.makedirs(policy_path, 0755)
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open(os.path.join(policy_path, "GPT.INI"), 'w').write(
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"[General]\r\nVersion=65543")
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os.makedirs(os.path.join(policy_path, "MACHINE"), 0755)
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os.makedirs(os.path.join(policy_path, "USER"), 0755)
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policy_path_dc = os.path.join(paths.sysvol, names.dnsdomain, "Policies",
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"{" + policyguid_dc + "}")
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os.makedirs(policy_path_dc, 0755)
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open(os.path.join(policy_path_dc, "GPT.INI"), 'w').write(
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"[General]\r\nVersion=2")
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os.makedirs(os.path.join(policy_path_dc, "MACHINE"), 0755)
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os.makedirs(os.path.join(policy_path_dc, "USER"), 0755)
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setup_gpo(paths,names,samdb,policyguid,policyguid_dc,domainsid,setfileacl)
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if not os.path.isdir(paths.netlogon):
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os.makedirs(paths.netlogon, 0755)
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