s4: Create a script for updating a running provision with change introduced since the initial provision

1 files changed, 694 insertions, 0 deletions

diff --git a/source4/scripting/bin/upgradeschema.py b/source4/scripting/bin/upgradeschema.py
new file mode 100755
index 00000000000..52579480cd8
--- /dev/null
+++ b/source4/scripting/bin/upgradeschema.py
@@ -0,0 +1,694 @@
+#!/usr/bin/python
+#
+# Copyright (C) Matthieu Patou <mat@matws.net> 2009
+#
+# Based on provision a Samba4 server by
+# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
+# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
+#
+#   
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#   
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#   
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import getopt
+import shutil
+import optparse
+import os
+import sys
+import random
+import string
+import re
+import base64
+# Find right directory when running from source tree
+sys.path.insert(0, "bin/python")
+
+from base64 import b64encode
+
+import samba
+from samba.credentials import DONT_USE_KERBEROS
+from samba.auth import system_session, admin_session
+from samba import Ldb
+from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE, LdbError
+import ldb
+import samba.getopt as options
+from samba.samdb import SamDB
+from samba import param
+from samba.provision import  ProvisionNames,provision_paths_from_lp,find_setup_dir,Schema,get_linked_attributes,FILL_FULL,provision
+from samba.dcerpc import misc, security
+from samba.ndr import ndr_pack, ndr_unpack
+
+replace=2^ldb.FLAG_MOD_REPLACE
+add=2^ldb.FLAG_MOD_ADD
+delete=2^ldb.FLAG_MOD_DELETE
+
+CHANGE = 0x01
+CHANGESD = 0x02
+GUESS = 0x04
+CHANGEALL = 0xff
+
+# Attributes that not copied from the reference provision even if they do not exists in the destination object
+# This is most probably because they are populated automatcally when object is created
+hashAttrNotCopied = { 	"dn": 1,"whenCreated": 1,"whenChanged": 1,"objectGUID": 1,"replPropertyMetaData": 1,"uSNChanged": 1,\
+						"uSNCreated": 1,"parentGUID": 1,"objectCategory": 1,"distinguishedName": 1,\
+						"showInAdvancedViewOnly": 1,"instanceType": 1, "cn": 1, "msDS-Behavior-Version":1, "nextRid":1,\
+						"nTMixedDomain": 1,"versionNumber":1, "lmPwdHistory":1, "pwdLastSet": 1, "ntPwdHistory":1, "unicodePwd":1,\
+						"dBCSPwd":1,"supplementalCredentials":1,"gPCUserExtensionNames":1, "gPCMachineExtensionNames":1,\
+						"maxPwdAge":1, "mail":1, "secret":1}
+
+# Usually for an object that already exists we do not overwrite attributes as they might have been changed for good
+# reasons. Anyway for a few of thems it's mandatory to replace them otherwise the provision will be broken somehow.
+hashOverwrittenAtt = {	 "prefixMap": replace, "systemMayContain": replace,"systemOnly":replace, "searchFlags":replace,\
+					 	 "mayContain":replace,  "systemFlags":replace, 
+						 "oEMInformation":replace, "operatingSystemVersion":replace, "adminPropertyPages":1,"possibleInferiors":replace+delete}
+backlinked = []
+
+def define_what_to_log(opts):
+	what = 0
+	if opts.debugchange:
+		what = what | CHANGE
+	if opts.debugchangesd:
+		what = what | CHANGESD
+	if opts.debugguess:
+		what = what | GUESS
+	if opts.debugall:
+		what = what | CHANGEALL
+	return what
+
+
+
+parser = optparse.OptionParser("provision [options]")
+sambaopts = options.SambaOptions(parser)
+parser.add_option_group(sambaopts)
+parser.add_option_group(options.VersionOptions(parser))
+credopts = options.CredentialsOptions(parser)
+parser.add_option_group(credopts)
+parser.add_option("--setupdir", type="string", metavar="DIR", 
+					help="directory with setup files")
+parser.add_option("--debugprovision", help="Debug provision", action="store_true")
+parser.add_option("--debugguess", help="Print information on what is different but won't be changed", action="store_true")
+parser.add_option("--debugchange", help="Print information on what is different but won't be changed", action="store_true")
+parser.add_option("--debugchangesd", help="Print information security descriptors differences", action="store_true")
+parser.add_option("--debugall", help="Print all available information (very verbose)", action="store_true")
+parser.add_option("--targetdir", type="string", metavar="DIR", 
+					help="Set target directory")
+
+opts = parser.parse_args()[0]
+
+whatToLog = define_what_to_log(opts)
+
+def messageprovision(text):
+	"""print a message if quiet is not set."""
+	if opts.debugprovision or opts.debugall:
+		print text
+
+def message(what,text):
+	"""print a message if quiet is not set."""
+	if whatToLog & what:
+		print text
+
+if len(sys.argv) == 1:
+	opts.interactive = True
+lp = sambaopts.get_loadparm()
+smbconf = lp.configfile
+
+creds = credopts.get_credentials(lp)
+creds.set_kerberos_state(DONT_USE_KERBEROS)
+setup_dir = opts.setupdir
+if setup_dir is None:
+    setup_dir = find_setup_dir()
+
+setup_dir = "/usr/local/src/samba4/source4/setup"
+session = system_session()
+
+# Create an array of backlinked attributes
+def populate_backlink(newpaths,creds,session,schemadn):
+	newsam_ldb = Ldb(newpaths.samdb, session_info=session, credentials=creds,lp=lp)
+	backlinked.extend(get_linked_attributes(ldb.Dn(newsam_ldb,str(schemadn)),newsam_ldb).values())
+
+# Get Paths for important objects (ldb, keytabs ...)
+def get_paths(targetdir=None,smbconf=None):
+	if targetdir is not None:
+		if (not os.path.exists(os.path.join(targetdir, "etc"))):
+			os.makedirs(os.path.join(targetdir, "etc"))
+		smbconf = os.path.join(targetdir, "etc", "smb.conf")
+	if smbconf is None:
+			smbconf = param.default_path()
+
+	if not os.path.exists(smbconf):
+		print >>sys.stderr, "Unable to find smb.conf .."
+		parser.print_usage()
+		sys.exit(1)
+
+	lp = param.LoadParm()
+	lp.load(smbconf)
+# Normaly we need the domain name for this function but for our needs it's pointless 
+	paths = provision_paths_from_lp(lp,"foo")
+	return paths
+
+# This function guess(fetch) informations needed to make a fresh provision from the current provision  	
+# It includes: realm, workgroup, partitions, netbiosname, domain guid, ...
+def guess_names_from_current_provision(credentials,session_info,paths):
+	lp = param.LoadParm()
+	lp.load(paths.smbconf)
+	names = ProvisionNames()
+	# NT domain, kerberos realm, root dn, domain dn, domain dns name
+	names.domain = string.upper(lp.get("workgroup"))
+	names.realm = lp.get("realm")
+	rootdn = "DC=" + names.realm.replace(".",",DC=")
+	names.domaindn = rootdn
+	names.dnsdomain = names.realm
+	names.realm = string.upper(names.realm)
+	# netbiosname
+	secrets_ldb = Ldb(paths.secrets, session_info=session_info, credentials=credentials,lp=lp)
+	# Get the netbiosname first (could be obtained from smb.conf in theory)
+	attrs = ["sAMAccountName"]
+	res = secrets_ldb.search(expression="(flatname=%s)"%names.domain,base="CN=Primary Domains", scope=SCOPE_SUBTREE, attrs=attrs)
+	names.netbiosname = str(res[0]["sAMAccountName"]).replace("$","")
+
+	#partitions = get_partitions(credentials,session_info,paths,lp)
+	names.smbconf = smbconf
+	samdb = SamDB(paths.samdb, session_info=session_info,
+								credentials=credentials, lp=lp)
+	
+	# partitions (schema,config,root)
+	# That's a bit simplistic but it's ok as long as we have only 3 partitions 
+	attrs2 = ["schemaNamingContext","configurationNamingContext","rootDomainNamingContext"]
+	res2 = samdb.search(expression="(objectClass=*)",base="", scope=SCOPE_BASE, attrs=attrs2)
+
+	names.configdn = res2[0]["configurationNamingContext"]
+	configdn = str(names.configdn)
+	names.schemadn = res2[0]["schemaNamingContext"]
+	if not (rootdn == str(res2[0]["rootDomainNamingContext"])):
+		print >>sys.stderr, "rootdn in sam.ldb and smb.conf is not the same ..."
+	else:
+		names.rootdn=res2[0]["rootDomainNamingContext"]
+	# default site name
+	attrs3 = ["cn"]
+	res3= samdb.search(expression="(objectClass=*)",base="CN=Sites,"+configdn, scope=SCOPE_ONELEVEL, attrs=attrs3)
+	names.sitename = str(res3[0]["cn"])
+	
+	# dns hostname and server dn 
+	attrs4 = ["dNSHostName"]
+	res4= samdb.search(expression="(CN=%s)"%names.netbiosname,base="OU=Domain Controllers,"+rootdn, \
+						scope=SCOPE_ONELEVEL, attrs=attrs4)
+	names.hostname = str(res4[0]["dNSHostName"]).replace("."+names.dnsdomain,"")
+
+	names.serverdn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % (names.netbiosname, names.sitename, configdn)
+	
+	# invocation id
+	attrs5 = ["invocationId"]
+	res5 = samdb.search(expression="(objectClass=*)",base="CN=Sites,"+configdn, scope=SCOPE_SUBTREE, attrs=attrs5)
+	for i in range(0,len(res5)):
+		if ( len(res5[i]) > 0):
+			names.invocation = str(ndr_unpack( misc.GUID,res5[i]["invocationId"][0]))
+			break
+	# domain guid/sid
+	attrs6 = ["objectGUID", "objectSid", ]
+	res6 = samdb.search(expression="(objectClass=*)",base=rootdn, scope=SCOPE_BASE, attrs=attrs6)
+	names.domainguid = str(ndr_unpack( misc.GUID,res6[0]["objectGUID"][0]))
+	names.domainsid = str(ndr_unpack( security.dom_sid,res6[0]["objectSid"][0]))
+
+	# policy guid
+	attrs7 = ["cn","displayName"]
+	res7 = samdb.search(expression="(displayName=Default Domain Policy)",base="CN=Policies,CN=System,"+rootdn, \
+							scope=SCOPE_ONELEVEL, attrs=attrs7)
+	names.policyid = str(res7[0]["cn"]).replace("{","").replace("}","")
+	# dc policy guid
+	attrs8 = ["cn","displayName"]
+	res8 = samdb.search(expression="(displayName=Default Domain Controllers Policy)",base="CN=Policies,CN=System,"+rootdn, \
+							scope=SCOPE_ONELEVEL, attrs=attrs7)
+	if len(res8) == 1:
+		names.policyid_dc = str(res8[0]["cn"]).replace("{","").replace("}","")
+	else:
+		names.policyid_dc = None
+	# ntds guid
+	attrs9 = ["objectGUID" ]
+	exp = "(dn=CN=NTDS Settings,%s)"%(names.serverdn)
+	print exp
+	res9 = samdb.search(expression="(dn=CN=NTDS Settings,%s)"%(names.serverdn),base=str(names.configdn), scope=SCOPE_SUBTREE, attrs=attrs9)
+	names.ntdsguid = str(ndr_unpack( misc.GUID,res9[0]["objectGUID"][0]))
+
+
+	return names
+
+# Debug a little bit
+def print_names(names):
+	message(GUESS, "rootdn      :"+str(names.rootdn))
+	message(GUESS, "configdn    :"+str(names.configdn))
+	message(GUESS, "schemadn    :"+str(names.schemadn))
+	message(GUESS, "serverdn    :"+names.serverdn)
+	message(GUESS, "netbiosname :"+names.netbiosname)
+	message(GUESS, "defaultsite :"+names.sitename)
+	message(GUESS, "dnsdomain   :"+names.dnsdomain)
+	message(GUESS, "hostname    :"+names.hostname)
+	message(GUESS, "domain      :"+names.domain)
+	message(GUESS, "realm       :"+names.realm)
+	message(GUESS, "invocationid:"+names.invocation)
+	message(GUESS, "policyguid  :"+names.policyid)
+	message(GUESS, "policyguiddc:"+str(names.policyid_dc))
+	message(GUESS, "domainsid   :"+names.domainsid)
+	message(GUESS, "domainguid  :"+names.domainguid)
+	message(GUESS, "ntdsguid    :"+names.ntdsguid)
+
+# Create a fresh new reference provision
+# This provision will be the reference for knowing what has changed in the 
+# since the latest upgrade in the current provision
+def newprovision(names,setup_dir,creds,session,smbconf):
+	random.seed()
+	provdir=os.path.join(os.environ["HOME"],"provision"+str(int(100000*random.random())))
+	logstd=os.path.join(provdir,"log.std")
+	os.chdir(os.path.join(setup_dir,".."))
+	os.mkdir(provdir)
+
+	provision(setup_dir, messageprovision,
+		session, creds, smbconf=smbconf, targetdir=provdir,
+		samdb_fill=FILL_FULL, realm=names.realm, domain=names.domain,
+		domainguid=names.domainguid, domainsid=names.domainsid,ntdsguid=names.ntdsguid,
+		policyguid=names.policyid,policyguid_dc=names.policyid_dc,hostname=names.hostname,
+		hostip=None, hostip6=None,
+		invocationid=names.invocation, adminpass=None,
+		krbtgtpass=None, machinepass=None,
+		dnspass=None, root=None, nobody=None,
+		wheel=None, users=None,
+		serverrole="domain controller",
+		ldap_backend_extra_port=None,
+		ldap_backend_type=None,
+		ldapadminpass=None,
+		ol_mmr_urls=None,
+		slapd_path=None,
+		setup_ds_path=None,
+		nosync=None,
+		ldap_dryrun_mode=None)
+	print >>sys.stderr, "provisiondir: "+provdir
+	return provdir
+
+# This function sorts two dn in the lexicographical order and put higher level DN before
+# So given the dns cn=bar,cn=foo and cn=foo the later will be return as smaller (-1) as it has less 
+# level
+def dn_sort(x,y):
+	p = re.compile(r'(?<!\\),')
+	tab1 = p.split(str(x))
+	tab2 = p.split(str(y))
+	min = 0
+	if (len(tab1) > len(tab2)):
+		min = len(tab2)
+	elif (len(tab1) < len(tab2)):
+		min = len(tab1) 
+	else: 
+		min = len(tab1)
+	len1=len(tab1)-1
+	len2=len(tab2)-1
+	space = " "
+	# Note: python range go up to upper limit but do not include it
+	for i in range(0,min):
+		ret=cmp(tab1[len1-i],tab2[len2-i])
+		if(ret != 0):
+			return ret	
+		else:
+			if(i==min-1):
+				if(len1==len2):
+					print >>sys.stderr,"PB PB PB"+space.join(tab1)+" / "+space.join(tab2)
+				if(len1>len2):
+					return 1
+				else:
+					return -1
+	return ret
+
+# check from security descriptors modifications return 1 if it is 0 otherwise
+# it also populate hash structure for later use in the upgrade process
+def handle_security_desc(ischema,att,msgElt,hashallSD,old,new):
+	if ischema == 1 and att == "defaultSecurityDescriptor"  and msgElt.flags() == ldb.FLAG_MOD_REPLACE:
+		hashSD = {}
+		hashSD["oldSD"] = old[0][att]
+		hashSD["newSD"] = new[0][att]
+		hashallSD[str(old[0].dn)] = hashSD
+		return 1
+	if att == "nTSecurityDescriptor"  and msgElt.flags() == ldb.FLAG_MOD_REPLACE:
+		if ischema == 0:
+			hashSD = {}
+			hashSD["oldSD"] =  ndr_unpack(security.descriptor,str(old[0][att]))
+			hashSD["newSD"] =  ndr_unpack(security.descriptor,str(new[0][att]))
+			hashallSD[str(old[0].dn)] = hashSD
+		return 1
+	return 0
+
+# Hangle special cases ... That's when we want to update an attribute only 
+# if it has a certain value or if it's for a certain object or 
+# a class of object. 
+# It can be also if we want to do a merge of value instead of a simple replace 
+
+def handle_special_case(att,delta,new,old,ischema):
+	flag = delta.get(att).flags()
+	if (att == "gPLink" or att == "gPCFileSysPath") and flag ==  ldb.FLAG_MOD_REPLACE and str(new[0].dn).lower() == str(old[0].dn).lower():
+		delta.remove(att)
+		return 1
+	if att == "forceLogoff":
+		ref=0x8000000000000000 
+		oldval=int(old[0][att][0])
+		newval=int(new[0][att][0])
+		ref == old and ref == abs(new)
+		return 1
+	if (att == "adminDisplayName" or att == "adminDescription") and ischema:
+		return 1
+	if (str(old[0].dn) == "CN=Samba4-Local-Domain,%s"%(str(names.schemadn)) and att == "defaultObjectCategory" and flag  == ldb.FLAG_MOD_REPLACE):
+		return 1
+	if (str(old[0].dn) == "CN=S-1-5-11,CN=ForeignSecurityPrincipals,%s"%(str(names.rootdn)) and att == "description" and flag  == ldb.FLAG_MOD_DELETE):
+		return 1
+	if (str(old[0].dn) == "CN=Title,%s"%(str(names.schemadn)) and att == "rangeUpper" and flag  == ldb.FLAG_MOD_REPLACE):
+		return 1
+	if ( (att == "member" or att == "servicePrincipalName") and flag  == ldb.FLAG_MOD_REPLACE):
+
+		hash = {}
+		newval = []
+		changeDelta=0
+		for elem in old[0][att]:
+			hash[str(elem)]=1
+			newval.append(str(elem))
+
+		for elem in new[0][att]:
+			if not hash.has_key(str(elem)):
+				changeDelta=1
+				newval.append(str(elem))
+		if changeDelta == 1:
+			delta[att] = ldb.MessageElement(newval, ldb.FLAG_MOD_REPLACE, att)
+		else:
+			delta.remove(att)
+		return 1
+	if (str(old[0].dn) == "%s"%(str(names.rootdn)) and att == "subRefs" and flag  == ldb.FLAG_MOD_REPLACE):
+		return 1
+	if str(delta.dn).endswith("CN=DisplaySpecifiers,%s"%names.configdn):
+		return 1
+	return 0
+
+def update_secrets(newpaths,paths,creds,session):
+	newsam_ldb = Ldb(newpaths.secrets, session_info=session, credentials=creds,lp=lp)
+	sam_ldb = Ldb(paths.secrets, session_info=session, credentials=creds,lp=lp)
+	res = newsam_ldb.search(expression="dn=@MODULES",base="", scope=SCOPE_SUBTREE)
+	res2 = sam_ldb.search(expression="dn=@MODULES",base="", scope=SCOPE_SUBTREE)
+	delta = sam_ldb.msg_diff(res2[0],res[0])
+	delta.dn = res2[0].dn
+	sam_ldb.modify(delta)	
+
+	newsam_ldb = Ldb(newpaths.secrets, session_info=session, credentials=creds,lp=lp)
+	sam_ldb = Ldb(paths.secrets, session_info=session, credentials=creds,lp=lp)
+	res = newsam_ldb.search(expression="objectClass=top",base="", scope=SCOPE_SUBTREE,attrs=["dn"])
+	res2 = sam_ldb.search(expression="objectClass=top",base="", scope=SCOPE_SUBTREE,attrs=["dn"])
+	hash_new = {}
+	hash = {}
+	listMissing = []
+	listPresent = []
+
+	empty = ldb.Message()
+	for i in range(0,len(res)):
+		hash_new[str(res[i]["dn"]).lower()] = res[i]["dn"]
+	
+	# Create a hash for speeding the search of existing object in the current provision
+	for i in range(0,len(res2)):
+		hash[str(res2[i]["dn"]).lower()] = res2[i]["dn"]
+
+	for k in hash_new.keys():
+		if not hash.has_key(k):
+			listMissing.append(hash_new[k])
+		else:
+			listPresent.append(hash_new[k])
+	for entry in listMissing:
+		res = newsam_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
+		res2 = sam_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
+		delta = sam_ldb.msg_diff(empty,res[0])
+		for att in hashAttrNotCopied.keys():
+			delta.remove(att)
+		message(CHANGE,"Entry %s is missing from secrets.ldb"%res[0].dn)
+		for att in delta:
+			message(CHANGE," Adding attribute %s"%att)
+		delta.dn = res[0].dn
+		sam_ldb.add(delta)	
+
+	for entry in listPresent:
+		res = newsam_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
+		res2 = sam_ldb.search(expression="dn=%s"%entry,base="", scope=SCOPE_SUBTREE)
+		delta = sam_ldb.msg_diff(res2[0],res[0])
+		i=0
+		for att in hashAttrNotCopied.keys():
+			delta.remove(att)
+		for att in delta:
+			i = i + 1
+			if att != "dn":
+				message(CHANGE," Adding/Changing attribute %s to %s"%(att,res2[0].dn))
+				
+		delta.dn = res2[0].dn
+		sam_ldb.modify(delta)	
+# Check difference between the current provision and the reference provision.
+# It looks for all object which base DN is name if ischema is false then scan is done in 
+# cross partition mode.
+# If ischema is true, then special handling is done for dealing with schema
+def check_diff_name(newpaths,paths,creds,session,basedn,names,ischema):
+	hash_new = {}
+	hash = {}
+	hashallSD = {}
+	listMissing = []
+	listPresent = []
+	res = []
+	res2 = []
+	# Connect to the reference provision and get all the attribute in the partition referred by name
+	newsam_ldb = Ldb(newpaths.samdb, session_info=session, credentials=creds,lp=lp)
+	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp)
+	if ischema:
+		res = newsam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"])
+		res2 = sam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"])
+	else:
+		res = newsam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"],controls=["search_options:1:2"])
+		res2 = sam_ldb.search(expression="objectClass=*",base=basedn, scope=SCOPE_SUBTREE,attrs=["dn"],controls=["search_options:1:2"])
+		
+	# Create a hash for speeding the search of new object
+	for i in range(0,len(res)):
+		hash_new[str(res[i]["dn"]).lower()] = res[i]["dn"]
+	
+	# Create a hash for speeding the search of existing object in the current provision
+	for i in range(0,len(res2)):
+		hash[str(res2[i]["dn"]).lower()] = res2[i]["dn"]
+
+	for k in hash_new.keys():
+		if not hash.has_key(k):
+			listMissing.append(hash_new[k])
+		else:
+			listPresent.append(hash_new[k])
+
+	# Sort the missing object in order to have object of the lowest level first (which can be 
+	# containers for higher level objects)
+	listMissing.sort(dn_sort)
+	listPresent.sort(dn_sort)
+
+	if ischema:
+		# The following lines (up to the for loop) is to load the up to date schema into our current LDB 
+		# a complete schema is needed as the insertion of attributes and class is done against it 
+		# and the schema is self validated
+		# The double ldb open and schema validation is taken from the initial provision script
+		# it's not certain that it is really needed ....
+		sam_ldb = Ldb(session_info=session, credentials=creds, lp=lp)
+		schema = Schema(setup_path, security.dom_sid(names.domainsid), schemadn=basedn, serverdn=names.serverdn)
+		# Load the schema from the one we computed earlier
+		sam_ldb.set_schema_from_ldb(schema.ldb)
+		# And now we can connect to the DB - the schema won't be loaded from the DB
+		sam_ldb.connect(paths.samdb)
+		sam_ldb.transaction_start()
+	else:	
+		sam_ldb.transaction_start()
+
+	empty = ldb.Message()
+	print "There are %d missing objects"%(len(listMissing))
+	for dn in listMissing:
+		res = newsam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn, scope=SCOPE_SUBTREE,controls=["search_options:1:2"])
+		#print >>sys.stderr, "@@@"+str(dn)
+		delta = sam_ldb.msg_diff(empty,res[0])
+		for att in hashAttrNotCopied.keys():
+			delta.remove(att)
+		for att in backlinked:
+			delta.remove(att)
+		delta.dn = dn
+
+		sam_ldb.add(delta,["relax:0"])
+
+	changed = 0
+	for dn in listPresent:
+		res = newsam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn, scope=SCOPE_SUBTREE,controls=["search_options:1:2"])
+		res2 = sam_ldb.search(expression="dn=%s"%(str(dn)),base=basedn, scope=SCOPE_SUBTREE,controls=["search_options:1:2"])
+		delta = sam_ldb.msg_diff(res2[0],res[0])
+		for att in hashAttrNotCopied.keys():
+			delta.remove(att)
+		for att in backlinked:
+			delta.remove(att)
+		delta.remove("parentGUID")
+		nb = 0
+		for att in delta:
+			msgElt = delta.get(att)
+			if att == "dn":
+				continue
+			if handle_security_desc(ischema,att,msgElt,hashallSD,res2,res):
+				delta.remove(att)
+				continue
+			if (not hashOverwrittenAtt.has_key(att) or not (hashOverwrittenAtt.get(att)&2^msgElt.flags())):
+				if  handle_special_case(att,delta,res,res2,ischema)==0 and msgElt.flags()!=ldb.FLAG_MOD_ADD:
+					i = 0
+					if opts.debugchange:
+						message(CHANGE, "dn= "+str(dn)+ " "+att + " with flag "+str(msgElt.flags())+ " is not allowed to be changed/removed, I discard this change ...")
+						for e in range(0,len(res2[0][att])):
+							message(CHANGE,"old %d : %s"%(i,str(res2[0][att][e])))
+						if msgElt.flags() == 2:
+							i = 0
+							for e in range(0,len(res[0][att])):
+								message(CHANGE,"new %d : %s"%(i,str(res[0][att][e])))
+					delta.remove(att)
+		delta.dn = dn
+		if len(delta.items()) >1:
+			attributes=",".join(delta.keys())
+			message(CHANGE,"%s is different from the reference one, changed attributes: %s"%(dn,attributes))
+			changed = changed + 1
+			sam_ldb.modify(delta)
+
+	sam_ldb.transaction_commit()
+	print "There are %d changed objects"%(changed)
+	return hashallSD
+
+
+# This function updates SD for AD objects.
+# As SD in the upgraded provision can be different for various reasons 
+# this function check if an automatic update can be performed and do it 
+# or if it can't be done.
+def update_sds(diffDefSD,diffSD,paths,creds,session,rootdn,domSIDTxt):
+	sam_ldb = Ldb(paths.samdb, session_info=session, credentials=creds,lp=lp)
+	sam_ldb.transaction_start()
+	domSID = security.dom_sid(domSIDTxt)
+	hashClassSD = {}
+	admin_session_info = admin_session(lp, str(domSID))
+	system_session_info = system_session()
+	upgrade = 0
+	for dn in diffSD.keys():
+		newSD = diffSD[dn]["newSD"].as_sddl(domSID)
+		oldSD = diffSD[dn]["oldSD"].as_sddl(domSID)
+		message(CHANGESD, "ntsecuritydescriptor for %s has changed old %s new %s"%(dn,oldSD,diffSD[dn]["newSD"].as_sddl(domSID)))
+		# First let's find the defaultSD for the object which SD is different from the reference one.
+		res = sam_ldb.search(expression="dn=%s"%(dn),base=rootdn, scope=SCOPE_SUBTREE,attrs=["objectClass"],controls=["search_options:1:2"])
+		classObj = res[0]["objectClass"][-1]
+		defSD = ""
+		if hashClassSD.has_key(classObj):
+			defSD = hashClassSD[classObj]
+		else:
+			res2 = sam_ldb.search(expression="lDAPDisplayName=%s"%(classObj),base=rootdn, scope=SCOPE_SUBTREE,attrs=["defaultSecurityDescriptor"],controls=["search_options:1:2"])
+			if len(res2) > 0:
+				defSD = str(res2[0]["defaultSecurityDescriptor"])
+				hashClassSD[classObj] = defSD
+		# Because somewhere between alpha8 and alpha9 samba4 changed the owner of ACLs in the AD so 
+		# we check if it's the case and if so use the "old" owner to see if the ACL is a direct calculation 
+		# from the defaultSecurityDescriptor
+		session = admin_session_info
+		if oldSD.startswith("O:SYG:BA"):
+			session = system_session_info
+		descr = security.descriptor.ntsd_from_defaultsd(defSD, domSID,session)
+		if descr.as_sddl(domSID) != oldSD:
+			print "nTSecurity Descriptor for %s do not directly inherit from the defaultSecurityDescriptor and is different from the one of the reference provision, therefor I can't upgrade i"
+			print "Old Descriptor: %s"%(oldSD)
+			print "New Descriptor: %s"%(newSD)
+			if diffDefSD.has_key(classObj):
+				# We have a pending modification for the defaultSecurityDescriptor of the class Object of the currently inspected object
+				# and we have a conflict so write down that we won't upgrade this defaultSD for this class object
+				diffDefSD[classObj]["noupgrade"]=1
+		else:
+			# At this point we know that the SD was directly generated from the defaultSecurityDescriptor
+			# so we can take the new SD and replace the old one
+			upgrade = upgrade +1
+			delta = ldb.Message()
+			delta.dn = ldb.Dn(sam_ldb,dn)
+			delta["nTSecurityDescriptor"] = ldb.MessageElement( ndr_pack(diffSD[dn]["newSD"]),ldb.FLAG_MOD_REPLACE,"nTSecurityDescriptor" )
+        	sam_ldb.modify(delta)
+		
+	sam_ldb.transaction_commit()
+	print "%d nTSecurityDescriptor attribute(s) have been updated"%(upgrade)
+	sam_ldb.transaction_start()
+	upgrade = 0
+	for dn in diffDefSD:
+		message(CHANGESD, "DefaultSecurityDescriptor for class object %s has changed"%(dn)) 
+		if not diffDefSD[dn].has_key("noupgrade"):
+			upgrade = upgrade +1
+			delta = ldb.Message()
+			delta.dn = ldb.Dn(sam_ldb,dn)
+			delta["defaultSecurityDescriptor"] = ldb.MessageElement(diffDefSD[dn]["newSD"],ldb.FLAG_MOD_REPLACE,"defaultSecurityDescriptor" )
+			sam_ldb.modify(delta)
+		else:
+			message(CHANGESD,"Not updating the defaultSecurityDescriptor for class object %s as one or more dependant object hasn't been upgraded"%(dn))
+
+	sam_ldb.transaction_commit()
+	print "%d defaultSecurityDescriptor attribute(s) have been updated"%(upgrade)
+			
+def rmall(topdir):
+	for root, dirs, files in os.walk(topdir, topdown=False):
+		for name in files:
+			os.remove(os.path.join(root, name))
+		for name in dirs:
+			os.rmdir(os.path.join(root, name))
+	os.rmdir(topdir)
+
+# For each partition check the differences
+
+def check_diff(newpaths,paths,creds,session,names):
+	#for name in [str(names.schemadn), str(names.configdn), str(names.rootdn)] :
+	#for name in [str(names.configdn)] :
+	print "Copy samdb"
+	shutil.copy(newpaths.samdb,paths.samdb)
+
+	print "Update ldb names if needed"
+	schemaldb=os.path.join(paths.private_dir,"schema.ldb")
+	configldb=os.path.join(paths.private_dir,"configuration.ldb")
+	usersldb=os.path.join(paths.private_dir,"users.ldb")
+	if os.path.isfile(schemaldb):
+		shutil.copy(schemaldb,os.path.join(paths.private_dir,"%s.ldb"%str(names.schemadn).upper()))
+		os.remove(schemaldb)
+	if os.path.isfile(usersldb):
+		shutil.copy(usersldb,os.path.join(paths.private_dir,"%s.ldb"%str(names.rootdn).upper()))
+		os.remove(usersldb)
+	if os.path.isfile(configldb):
+		shutil.copy(configldb,os.path.join(paths.private_dir,"%s.ldb"%str(names.configdn).upper()))
+		os.remove(configldb)
+	shutil.copy(os.path.join(newpaths.private_dir,"privilege.ldb"),os.path.join(paths.private_dir,"privilege.ldb"))
+
+	print "Doing schema update"
+	hashdef = check_diff_name(newpaths,paths,creds,session,str(names.schemadn),names,1)
+	print "Done with schema update"
+	print "Scanning whole provision for updates and additions"
+	hashSD = check_diff_name(newpaths,paths,creds,session,str(names.rootdn),names,0)
+	print "Done with scanning"
+	print "Updating secrets"
+	update_secrets(newpaths,paths,creds,session)
+#	update_sds(hashdef,hashSD,paths,creds,session,str(names.rootdn),names.domainsid)
+
+# From here start the big steps of the program
+# First get files paths
+paths=get_paths(targetdir=opts.targetdir,smbconf=smbconf)
+paths.setup = setup_dir
+def setup_path(file):
+	return os.path.join(setup_dir, file)
+# Guess all the needed names (variables in fact) from the current 
+# provision.
+names = guess_names_from_current_provision(creds,session,paths)
+# Let's see them
+print_names(names)
+# With all this information let's create a fresh new provision used as reference
+provisiondir = newprovision(names,setup_dir,creds,session,smbconf)
+#provisiondir = "/home/mat/provision12962"
+# Get file paths of this new provision
+newpaths = get_paths(targetdir=provisiondir)
+populate_backlink(newpaths,creds,session,names.schemadn)
+# Check the difference
+check_diff(newpaths,paths,creds,session,names)
+# remove reference provision now that everything is done !
+rmall(provisiondir)