-#!/usr/bin/python
+# backend code for upgrading from Samba3
+# Copyright Jelmer Vernooij 2005-2007
#
-# backend code for upgrading from Samba3
-# Copyright Jelmer Vernooij 2005-2007
-# Released under the GNU GPL v3 or later
+# 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/>.
#
"""Support code for upgrading from Samba 3 to Samba 4."""
-from provision import findnss, provision, FILL_DRS
+__docformat__ = "restructuredText"
+
import grp
import ldb
+import time
import pwd
-import uuid
-import registry
-from samba import Ldb
-from samba.samdb import SamDB
-def import_sam_policy(samldb, samba3_policy, domaindn):
+from samba import Ldb, registry
+from samba.param import LoadParm
+from samba.provision import provision, FILL_FULL
+from samba.samba3 import passdb
+from samba.samba3 import param as s3param
+from samba.dcerpc import lsa
+from samba.dcerpc.security import dom_sid
+from samba import dsdb
+from samba.ndr import ndr_pack
+
+
+def import_sam_policy(samldb, policy, dn):
+ """Import a Samba 3 policy database."""
samldb.modify_ldif("""
dn: %s
changetype: modify
samba3BadLockoutMinutes: %d
samba3DisconnectTime: %d
-""" % (dn, policy.min_password_length,
+""" % (dn, policy.min_password_length,
policy.password_history, policy.minimum_password_age,
policy.maximum_password_age, policy.lockout_duration,
policy.reset_count_minutes, policy.user_must_logon_to_change_password,
def import_sam_account(samldb,acc,domaindn,domainsid):
"""Import a Samba 3 SAM account.
-
+
:param samldb: Samba 4 SAM Database handle
:param acc: Samba 3 account
:param domaindn: Domain DN
if acc.fullname is None:
acc.fullname = acc.username
-
+
assert acc.fullname is not None
assert acc.nt_username is not None
"samba3Domain": acc.domain,
"samba3DirDrive": acc.dir_drive,
"samba3MungedDial": acc.munged_dial,
- "samba3Homedir": acc.homedir,
- "samba3LogonScript": acc.logon_script,
+ "samba3Homedir": acc.homedir,
+ "samba3LogonScript": acc.logon_script,
"samba3ProfilePath": acc.profile_path,
"samba3Workstations": acc.workstations,
"samba3KickOffTime": str(acc.kickoff_time),
def import_sam_group(samldb, sid, gid, sid_name_use, nt_name, comment, domaindn):
"""Upgrade a SAM group.
-
+
:param samldb: SAM database.
:param gid: Group GID
:param sid_name_use: SID name use
if nt_name in ("Domain Guests", "Domain Users", "Domain Admins"):
return None
-
+
if gid == -1:
gr = grp.getgrnam(nt_name)
else:
unixname = gr.gr_name
assert unixname is not None
-
+
samldb.add({
"dn": "cn=%s,%s" % (nt_name, domaindn),
"objectClass": ["top", "group"],
"description": comment,
- "cn": nt_name,
+ "cn": nt_name,
"objectSid": sid,
"unixName": unixname,
"samba3SidNameUse": str(sid_name_use)
})
-def import_idmap(samdb,samba3_idmap,domaindn):
+def add_idmap_entry(idmapdb, sid, xid, xid_type, logger):
+ """Create idmap entry"""
+
+ # First try to see if we already have this entry
+ found = False
+ try:
+ msg = idmapdb.search(expression='objectSid=%s' % str(sid))
+ if msg.count == 1:
+ found = True
+ except Exception, e:
+ raise e
+
+ if found:
+ print msg.count
+ print dir(msg)
+ try:
+ m = ldb.Message()
+ m.dn = ldb.Dn(idmapdb, msg[0]['dn'])
+ m['xidNumber'] = ldb.MessageElement(str(xid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
+ m['type'] = ldb.MessageElement(xid_type, ldb.FLAG_MOD_REPLACE, 'type')
+ idmapdb.modify(m)
+ except ldb.LdbError, e:
+ logger.warn('Could not modify idmap entry for sid=%s, id=%s, type=%s (%s)',
+ str(sid), str(xid), xid_type, str(e))
+ except Exception, e:
+ raise e
+ else:
+ try:
+ idmapdb.add({"dn": "CN=%s" % str(sid),
+ "cn": str(sid),
+ "objectClass": "sidMap",
+ "objectSid": ndr_pack(sid),
+ "type": xid_type,
+ "xidNumber": str(xid)})
+ except ldb.LdbError, e:
+ logger.warn('Could not add idmap entry for sid=%s, id=%s, type=%s (%s)',
+ str(sid), str(xid), xid_type, str(e))
+ except Exception, e:
+ raise e
+
+
+def import_idmap(idmapdb, samba3_idmap, logger):
"""Import idmap data.
- :param samdb: SamDB handle.
:param samba3_idmap: Samba 3 IDMAP database to import from
- :param domaindn: Domain DN.
"""
- samdb.add({
- "dn": domaindn,
- "userHwm": str(samba3_idmap.get_user_hwm()),
- "groupHwm": str(samba3_idmap.get_group_hwm())})
- for uid in samba3_idmap.uids():
- samdb.add({"dn": "SID=%s,%s" % (samba3_idmap.get_user_sid(uid), domaindn),
- "SID": samba3_idmap.get_user_sid(uid),
- "type": "user",
- "unixID": str(uid)})
+ currentxid = max(samba3_idmap.get_user_hwm(), samba3_idmap.get_group_hwm())
+ lowerbound = currentxid
+ # FIXME: upperbound
+
+ m = ldb.Message()
+ m.dn = ldb.Dn(idmapdb, 'CN=CONFIG')
+ m['lowerbound'] = ldb.MessageElement(str(lowerbound), ldb.FLAG_MOD_REPLACE, 'lowerBound')
+ m['xidNumber'] = ldb.MessageElement(str(currentxid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
+ idmapdb.modify(m)
+
+ for id_type, xid in samba3_idmap.ids():
+ if id_type == 'UID':
+ xid_type = 'ID_TYPE_UID'
+ elif id_type == 'GID':
+ xid_type = 'ID_TYPE_GID'
+ else:
+ logger.warn('Wrong type of entry in idmap (%s), Ignoring', id_type)
+ continue
+
+ sid = samba3_idmap.get_sid(xid, id_type)
+ add_idmap_entry(idmapdb, dom_sid(sid), xid, xid_type, logger)
- for gid in samba3_idmap.uids():
- samdb.add({"dn": "SID=%s,%s" % (samba3_idmap.get_group_sid(gid), domaindn),
- "SID": samba3_idmap.get_group_sid(gid),
- "type": "group",
- "unixID": str(gid)})
+
+def add_group_from_mapping_entry(samdb, groupmap, logger):
+ """Add or modify group from group mapping entry"""
+
+ # First try to see if we already have this entry
+ try:
+ msg = samdb.search(base='<SID=%s>' % str(groupmap.sid), scope=ldb.SCOPE_BASE)
+ found = True
+ except ldb.LdbError, (ecode, emsg):
+ if ecode == ldb.ERR_NO_SUCH_OBJECT:
+ found = False
+ else:
+ raise ldb.LdbError(ecode, emsg)
+ except Exception, e:
+ raise e
+
+ if found:
+ logger.warn('Group already exists sid=%s, groupname=%s existing_groupname=%s, Ignoring.',
+ str(groupmap.sid), groupmap.nt_name, msg[0]['sAMAccountName'][0])
+ else:
+ if groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
+ return
+
+ m = ldb.Message()
+ m.dn = ldb.Dn(samdb, "CN=%s,CN=Users,%s" % (groupmap.nt_name, samdb.get_default_basedn()))
+ m['a01'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD, 'cn')
+ m['a02'] = ldb.MessageElement('group', ldb.FLAG_MOD_ADD, 'objectClass')
+ m['a03'] = ldb.MessageElement(ndr_pack(groupmap.sid), ldb.FLAG_MOD_ADD, 'objectSid')
+ m['a04'] = ldb.MessageElement(groupmap.comment, ldb.FLAG_MOD_ADD, 'description')
+ m['a05'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD, 'sAMAccountName')
+
+ if groupmap.sid_name_use == lsa.SID_NAME_ALIAS:
+ m['a06'] = ldb.MessageElement(str(dsdb.GTYPE_SECURITY_DOMAIN_LOCAL_GROUP), ldb.FLAG_MOD_ADD, 'groupType')
+
+ try:
+ samdb.add(m, controls=["relax:0"])
+ except ldb.LdbError, e:
+ logger.warn('Could not add group name=%s (%s)', groupmap.nt_name, str(e))
+ except Exception, e:
+ raise(e)
+
+
+def add_users_to_group(samdb, group, members):
+ """Add user/member to group/alias"""
+
+ for member_sid in members:
+ m = ldb.Message()
+ m.dn = ldb.Dn(samdb, "<SID=%s" % str(group.sid))
+ m['a01'] = ldb.MessageElement("<SID=%s>" % str(member_sid), ldb.FLAG_MOD_REPLACE, 'member')
+
+ try:
+ samdb.modify(m)
+ except ldb.LdbError, e:
+ logger.warn("Could not add member to group '%s'", groupmap.nt_name)
+ except Exception, e:
+ raise(e)
def import_wins(samba4_winsdb, samba3_winsdb):
"""Import settings from a Samba3 WINS database.
-
+
:param samba4_winsdb: WINS database to import to
:param samba3_winsdb: WINS database to import from
"""
version_id = 0
- import time
for (name, (ttl, ips, nb_flags)) in samba3_winsdb.items():
version_id+=1
"versionID": str(version_id),
"address": ips})
- samba4_winsdb.add({"dn": "CN=VERSION",
+ samba4_winsdb.add({"dn": "cn=VERSION",
+ "cn": "VERSION",
"objectClass": "winsMaxVersion",
"maxVersion": str(version_id)})
-def upgrade_provision(samba3, setup_dir, message, credentials, session_info, lp, paths):
- oldconf = samba3.get_conf()
-
- if oldconf.get("domain logons") == "True":
- serverrole = "domain controller"
- else:
- if oldconf.get("security") == "user":
- serverrole = "standalone"
- else:
- serverrole = "member server"
-
- lp.set("server role", serverrole)
- domainname = oldconf.get("workgroup")
- if domainname:
- domainname = str(domainname)
- lp.set("workgroup", domainname)
- realm = oldconf.get("realm")
- netbiosname = oldconf.get("netbios name")
-
- secrets_db = samba3.get_secrets_db()
-
- if domainname is None:
- domainname = secrets_db.domains()[0]
- message("No domain specified in smb.conf file, assuming '%s'" % domainname)
-
- if realm is None:
- realm = domainname.lower()
- message("No realm specified in smb.conf file, assuming '%s'\n" % realm)
- lp.set("realm", realm)
-
- domainguid = secrets_db.get_domain_guid(domainname)
- domainsid = secrets_db.get_sid(domainname)
- if domainsid is None:
- message("Can't find domain secrets for '%s'; using random SID\n" % domainname)
-
- if netbiosname is not None:
- machinepass = secrets_db.get_machine_password(netbiosname)
- else:
- machinepass = None
-
- domaindn = provision(lp=lp, setup_dir=setup_dir, message=message,
- samdb_fill=FILL_DRS, ldapbackend=None,
- paths=paths, session_info=session_info, credentials=credentials, realm=realm,
- domain=domainname, domainsid=domainsid, domainguid=domainguid,
- machinepass=machinepass, serverrole=serverrole)
-
- samdb = SamDB(paths.samdb, credentials=credentials, lp=lp, session_info=session_info)
-
- import_wins(Ldb(paths.winsdb), samba3.get_wins_db())
-
- # FIXME: import_registry(registry.Registry(), samba3.get_registry())
-
- # FIXME: import_idmap(samdb,samba3.get_idmap_db(),domaindn)
-
- groupdb = samba3.get_groupmapping_db()
- for sid in groupdb.groupsids():
- (gid, sid_name_use, nt_name, comment) = groupdb.get_group(sid)
- # FIXME: import_sam_group(samdb, sid, gid, sid_name_use, nt_name, comment, domaindn)
-
- # FIXME: Aliases
-
- passdb = samba3.get_sam_db()
- for name in passdb:
- user = passdb[name]
- #FIXME: import_sam_account(samdb, user, domaindn, domainsid)
-
- if hasattr(passdb, 'ldap_url'):
- message("Enabling Samba3 LDAP mappings for SAM database")
-
- enable_samba3sam(samdb, passdb.ldap_url)
-
-
def enable_samba3sam(samdb, ldapurl):
"""Enable Samba 3 LDAP URL database.
smbconf_keep = [
- "dos charset",
+ "dos charset",
"unix charset",
"display charset",
"comment",
"write raw",
"disable netbios",
"nt status support",
- "announce version",
- "announce as",
"max mux",
"max xmit",
"name resolve order",
"""Remove configuration variables not present in Samba4
:param oldconf: Old configuration structure
- :param mark: Whether removed configuration variables should be
+ :param mark: Whether removed configuration variables should be
kept in the new configuration as "samba3:<name>"
"""
data = oldconf.data()
- newconf = param_init()
+ newconf = LoadParm()
for s in data:
for p in data[s]:
key_handle.set_value(value_name, value_type, value_data)
+def upgrade_from_samba3(samba3, logger, session_info, smbconf, targetdir):
+ """Upgrade from samba3 database to samba4 AD database
+ """
+
+ # Read samba3 smb.conf
+ oldconf = s3param.get_context();
+ oldconf.load(smbconf)
+
+ if oldconf.get("domain logons"):
+ serverrole = "domain controller"
+ else:
+ if oldconf.get("security") == "user":
+ serverrole = "standalone"
+ else:
+ serverrole = "member server"
+
+ domainname = oldconf.get("workgroup")
+ realm = oldconf.get("realm")
+ netbiosname = oldconf.get("netbios name")
+
+ # secrets db
+ secrets_db = samba3.get_secrets_db()
+
+ if not domainname:
+ domainname = secrets_db.domains()[0]
+ logger.warning("No domain specified in smb.conf file, assuming '%s'",
+ domainname)
+
+ if not realm:
+ if oldconf.get("domain logons"):
+ logger.warning("No realm specified in smb.conf file and being a DC. That upgrade path doesn't work! Please add a 'realm' directive to your old smb.conf to let us know which one you want to use (generally it's the upcased DNS domainname).")
+ return
+ else:
+ realm = domainname.upper()
+ logger.warning("No realm specified in smb.conf file, assuming '%s'",
+ realm)
+
+ # Find machine account and password
+ machinepass = None
+ machinerid = None
+ machinesid = None
+ next_rid = 1000
+
+ try:
+ machinepass = secrets_db.get_machine_password(netbiosname)
+ except:
+ pass
+
+ # We must close the direct pytdb database before the C code loads it
+ secrets_db.close()
+
+ passdb.set_secrets_dir(samba3.libdir)
+
+ # Get domain sid
+ try:
+ domainsid = passdb.get_global_sam_sid()
+ except:
+ raise Exception("Can't find domain sid for '%s', Exiting." % domainname)
+
+ # Get machine account, sid, rid
+ try:
+ machineacct = old_passdb.getsampwnam('%s$' % netbiosname)
+ machinesid, machinerid = machineacct.user_sid.split()
+ except:
+ pass
+
+ # Connect to old password backend
+ old_passdb = passdb.PDB(oldconf.get('passdb backend'))
+
+ # Import groups from old passdb backend
+ logger.info("Exporting groups")
+ grouplist = old_passdb.enum_group_mapping()
+ groupmembers = {}
+ for group in grouplist:
+ sid, rid = group.sid.split()
+ if sid == domainsid:
+ if rid >= next_rid:
+ next_rid = rid + 1
+
+ # Get members for each group/alias
+ if group.sid_name_use == lsa.SID_NAME_ALIAS or group.sid_name_use == lsa.SID_NAME_WKN_GRP:
+ members = old_passdb.enum_aliasmem(group.sid)
+ elif group.sid_name_use == lsa.SID_NAME_DOM_GRP:
+ try:
+ members = old_passdb.enum_group_members(group.sid)
+ except:
+ continue
+ else:
+ logger.warn("Ignoring group '%s' with sid_name_use=%d",
+ group.nt_name, group.sid_name_use)
+ continue
+ groupmembers[group.nt_name] = members
+
+
+ # Import users from old passdb backend
+ logger.info("Exporting users")
+ userlist = old_passdb.search_users(0)
+ userdata = {}
+ uids = {}
+ for entry in userlist:
+ if machinerid and machinerid == entry['rid']:
+ continue
+ username = entry['account_name']
+ if entry['rid'] < 1000:
+ logger.info(" Skipping wellknown rid=%d (for username=%s)", entry['rid'], username)
+ continue
+ if entry['rid'] >= next_rid:
+ next_rid = entry['rid'] + 1
+
+ userdata[username] = old_passdb.getsampwnam(username)
+ try:
+ uids[username] = old_passdb.sid_to_id(userdata[username].user_sid)[0]
+ except:
+ try:
+ uids[username] = pwd.getpwnam(username).pw_uid
+ except:
+ pass
+
+ logger.info("Next rid = %d", next_rid)
+
+ # Do full provision
+ result = provision(logger, session_info, None,
+ targetdir=targetdir, realm=realm, domain=domainname,
+ domainsid=str(domainsid), next_rid=next_rid,
+ dc_rid=machinerid,
+ hostname=netbiosname, machinepass=machinepass,
+ serverrole=serverrole, samdb_fill=FILL_FULL)
+
+ logger.info("Import WINS")
+ import_wins(Ldb(result.paths.winsdb), samba3.get_wins_db())
+
+ new_smbconf = result.lp.configfile
+ newconf = s3param.get_context()
+ newconf.load(new_smbconf)
+
+ # Migrate idmap
+ logger.info("Migrating idmap database")
+ import_idmap(result.idmap, samba3.get_idmap_db(), logger)
+
+ # Connect to samba4 backend
+ new_passdb = passdb.PDB('samba4')
+
+ # Export groups to samba4 backend
+ logger.info("Importing groups")
+ for g in grouplist:
+ # Ignore uninitialized groups (gid = -1)
+ if g.gid != 0xffffffff:
+ add_idmap_entry(result.idmap, g.sid, g.gid, "GID", logger)
+ add_group_from_mapping_entry(result.samdb, g, logger)
+
+ # Export users to samba4 backend
+ logger.info("Importing users")
+ for username in userdata:
+ new_passdb.add_sam_account(userdata[username])
+ if username in uids:
+ add_idmap_entry(result.idmap, userdata[username].user_sid, uids[username], "UID", logger)
+
+ logger.info("Adding users to groups")
+ for g in grouplist:
+ if g.nt_name in groupmembers:
+ add_users_to_group(result.samdb, g, groupmembers[g.nt_name])
+
+ # FIXME: import_registry(registry.Registry(), samba3.get_registry())
git.samba.org / idra / samba.git / blobdiff