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upgradeprovision: split the big script to put reusable functions appart
Signed-off-by: Jelmer Vernooij <jelmer@samba.org>
This commit is contained in:
Matthieu Patou
committed by
Jelmer Vernooij
Jelmer Vernooij
parent
2238260aa3
commit
3bd16415d2
220
source4/scripting/python/samba/upgradehelpers.py
Executable file
220
source4/scripting/python/samba/upgradehelpers.py
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#!/usr/bin/python
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#
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# Helpers for provision stuff
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# Copyright (C) Matthieu Patou <mat@matws.net> 2009-2010
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#
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# Based on provision a Samba4 server by
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# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
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# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
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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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import os
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import sys
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import string
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import re
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# Find right directory when running from source tree
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import samba
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from samba import Ldb, DS_DOMAIN_FUNCTION_2000
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from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE, LdbError
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import ldb
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from samba.provision import ProvisionNames,provision_paths_from_lp,FILL_FULL,provision
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from samba.provisionexceptions import ProvisioningError
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from samba.dcerpc import misc, security
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from samba.ndr import ndr_pack, ndr_unpack
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# Get Paths for important objects (ldb, keytabs ...)
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def get_paths(param,targetdir=None,smbconf=None):
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if targetdir is not None:
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if (not os.path.exists(os.path.join(targetdir, "etc"))):
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os.makedirs(os.path.join(targetdir, "etc"))
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smbconf = os.path.join(targetdir, "etc", "smb.conf")
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if smbconf is None:
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smbconf = param.default_path()
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if not os.path.exists(smbconf):
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raise ProvisioningError("Unable to find smb.conf ...")
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lp = param.LoadParm()
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lp.load(smbconf)
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paths = provision_paths_from_lp(lp,lp.get("realm"))
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return paths
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# This function guesses (fetches) informations needed to make a fresh provision
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# from the current provision
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# It includes: realm, workgroup, partitions, netbiosname, domain guid, ...
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def find_provision_key_parameters(param,credentials,session_info,paths,smbconf):
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lp = param.LoadParm()
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lp.load(paths.smbconf)
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names = ProvisionNames()
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# NT domain, kerberos realm, root dn, domain dn, domain dns name
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names.domain = string.upper(lp.get("workgroup"))
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names.realm = lp.get("realm")
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basedn = "DC=" + names.realm.replace(".",",DC=")
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names.dnsdomain = names.realm
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names.realm = string.upper(names.realm)
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# netbiosname
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secrets_ldb = Ldb(paths.secrets, session_info=session_info, credentials=credentials,lp=lp, options=["modules:samba_secrets"])
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# Get the netbiosname first (could be obtained from smb.conf in theory)
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attrs = ["sAMAccountName"]
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res = secrets_ldb.search(expression="(flatname=%s)"%names.domain,base="CN=Primary Domains", scope=SCOPE_SUBTREE, attrs=attrs)
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names.netbiosname = str(res[0]["sAMAccountName"]).replace("$","")
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names.smbconf = smbconf
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# It's important here to let ldb load with the old module or it's quite
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# certain that the LDB won't load ...
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samdb = Ldb(paths.samdb, session_info=session_info,
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credentials=credentials, lp=lp, options=["modules:samba_dsdb"])
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# That's a bit simplistic but it's ok as long as we have only 3
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# partitions
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attrs2 = ["defaultNamingContext", "schemaNamingContext","configurationNamingContext","rootDomainNamingContext"]
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current = samdb.search(expression="(objectClass=*)",base="", scope=SCOPE_BASE, attrs=attrs2)
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names.configdn = current[0]["configurationNamingContext"]
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configdn = str(names.configdn)
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names.schemadn = current[0]["schemaNamingContext"]
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if not (ldb.Dn(samdb, basedn) == (ldb.Dn(samdb, current[0]["defaultNamingContext"][0]))):
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raise ProvisioningError(("basedn in %s (%s) and from %s (%s) is not the same ..." % (paths.samdb, str(current[0]["defaultNamingContext"][0]), paths.smbconf, basedn)))
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names.domaindn=current[0]["defaultNamingContext"]
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names.rootdn=current[0]["rootDomainNamingContext"]
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# default site name
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attrs3 = ["cn"]
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res3= samdb.search(expression="(objectClass=*)",base="CN=Sites,"+configdn, scope=SCOPE_ONELEVEL, attrs=attrs3)
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names.sitename = str(res3[0]["cn"])
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# dns hostname and server dn
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attrs4 = ["dNSHostName"]
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res4= samdb.search(expression="(CN=%s)"%names.netbiosname,base="OU=Domain Controllers,"+basedn, \
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scope=SCOPE_ONELEVEL, attrs=attrs4)
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names.hostname = str(res4[0]["dNSHostName"]).replace("."+names.dnsdomain,"")
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server_res = samdb.search(expression="serverReference=%s"%res4[0].dn, attrs=[], base=configdn)
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names.serverdn = server_res[0].dn
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# invocation id/objectguid
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res5 = samdb.search(expression="(objectClass=*)",base="CN=NTDS Settings,%s" % str(names.serverdn), scope=SCOPE_BASE, attrs=["invocationID","objectGUID"])
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names.invocation = str(ndr_unpack( misc.GUID,res5[0]["invocationId"][0]))
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names.ntdsguid = str(ndr_unpack( misc.GUID,res5[0]["objectGUID"][0]))
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# domain guid/sid
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attrs6 = ["objectGUID", "objectSid","msDS-Behavior-Version" ]
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res6 = samdb.search(expression="(objectClass=*)",base=basedn, scope=SCOPE_BASE, attrs=attrs6)
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names.domainguid = str(ndr_unpack( misc.GUID,res6[0]["objectGUID"][0]))
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names.domainsid = ndr_unpack( security.dom_sid,res6[0]["objectSid"][0])
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if res6[0].get("msDS-Behavior-Version") == None or int(res6[0]["msDS-Behavior-Version"][0]) < DS_DOMAIN_FUNCTION_2000:
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names.domainlevel = DS_DOMAIN_FUNCTION_2000
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else:
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names.domainlevel = int(res6[0]["msDS-Behavior-Version"][0])
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# policy guid
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attrs7 = ["cn","displayName"]
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res7 = samdb.search(expression="(displayName=Default Domain Policy)",base="CN=Policies,CN=System,"+basedn, \
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scope=SCOPE_ONELEVEL, attrs=attrs7)
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names.policyid = str(res7[0]["cn"]).replace("{","").replace("}","")
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# dc policy guid
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attrs8 = ["cn","displayName"]
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res8 = samdb.search(expression="(displayName=Default Domain Controllers Policy)",base="CN=Policies,CN=System,"+basedn, \
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scope=SCOPE_ONELEVEL, attrs=attrs7)
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if len(res8) == 1:
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names.policyid_dc = str(res8[0]["cn"]).replace("{","").replace("}","")
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else:
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names.policyid_dc = None
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return names
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# Create a fresh new reference provision
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# This provision will be the reference for knowing what has changed in the
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# since the latest upgrade in the current provision
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def newprovision(names,setup_dir,creds,session,smbconf,provdir,messagefunc):
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if os.path.isdir(provdir):
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rmall(provdir)
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logstd=os.path.join(provdir,"log.std")
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os.chdir(os.path.join(setup_dir,".."))
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os.mkdir(provdir)
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os.close(2)
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sys.stderr = open("%s/provision.log"%provdir, "w")
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messagefunc("Reference provision stored in %s"%provdir)
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messagefunc("STDERR message of provision will be logged in %s/provision.log"%provdir)
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sys.stderr = open("/dev/stdout", "w")
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provision(setup_dir, messagefunc,
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session, creds, smbconf=smbconf, targetdir=provdir,
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samdb_fill=FILL_FULL, realm=names.realm, domain=names.domain,
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domainguid=names.domainguid, domainsid=str(names.domainsid),ntdsguid=names.ntdsguid,
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policyguid=names.policyid,policyguid_dc=names.policyid_dc,hostname=names.netbiosname,
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hostip=None, hostip6=None,
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invocationid=names.invocation, adminpass=None,
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krbtgtpass=None, machinepass=None,
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dnspass=None, root=None, nobody=None,
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wheel=None, users=None,
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serverrole="domain controller",
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ldap_backend_extra_port=None,
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backend_type=None,
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ldapadminpass=None,
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ol_mmr_urls=None,
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slapd_path=None,
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setup_ds_path=None,
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nosync=None,
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dom_for_fun_level=names.domainlevel,
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ldap_dryrun_mode=None,useeadb=True)
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# This function sorts two DNs in the lexicographical order and put higher level
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# DN before.
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# So given the dns cn=bar,cn=foo and cn=foo the later will be return as smaller
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# (-1) as it has less level
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def dn_sort(x,y):
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p = re.compile(r'(?<!\\),')
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tab1 = p.split(str(x))
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tab2 = p.split(str(y))
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min = 0
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if (len(tab1) > len(tab2)):
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min = len(tab2)
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elif (len(tab1) < len(tab2)):
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min = len(tab1)
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else:
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min = len(tab1)
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len1=len(tab1)-1
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len2=len(tab2)-1
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space = " "
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# Note: python range go up to upper limit but do not include it
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for i in range(0,min):
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ret=cmp(tab1[len1-i],tab2[len2-i])
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if(ret != 0):
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return ret
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else:
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if(i==min-1):
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assert len1!=len2,"PB PB PB"+space.join(tab1)+" / "+space.join(tab2)
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if(len1>len2):
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return 1
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else:
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return -1
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return ret
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def rmall(topdir):
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for root, dirs, files in os.walk(topdir, topdown=False):
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for name in files:
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os.remove(os.path.join(root, name))
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for name in dirs:
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os.rmdir(os.path.join(root, name))
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os.rmdir(topdir)
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